本レポートは独立行政法人日本原子力研究開発機構が不定期に発行する成果報告書です。
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なお、本レポートの全文は日本原子力研究開発機構ホームページ（http://www.jaea.go.jp）
より発信されています。
独立行政法人日本原子力研究開発機構〒319-1195

研究技術情報部

研究技術情報課

茨城県那珂郡東海村白方白根 2 番地 4

電話 029-282-6387, Fax 029-282-5920, E-mail:ird-support@jaea.go.jp
This report is issued irregularly by Japan Atomic Energy Agency.
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Tel +81-29-282-6387, Fax +81-29-282-5920, E-mail:ird-support@jaea.go.jp© Japan Atomic Energy Agency, 2014

JAEA-Review 2013-040

研究炉（JRR-3 及び JRR-4）利用における研究成果集（平成２１年度）

日本原子力研究開発機構 東海研究開発センター 原子力科学研究所
研究炉加速器管理部（編）研究炉利用課（2013 年 9 月 24 日受理）

JRR-3 は、中性子散乱、即発ガンマ線分析、中性子ラジオグラフィなどの実験利用、及び、放射化分析、原子炉燃料材料、ラジオアイソトープ製造、フィッショントラック
年代測定の照射利用など、様々な目的に利用されている。
JRR-4 については、医療照射（Boron Neutron Capture Therapy：BNCT）、即発ガンマ
線分析、放射線測定器の感度試験、原子炉研修運転実習等の実験利用、及び、放射化分
析、ラジオアイソトープ製造、フィッショントラック年代測定のための照射利用など、様々な目的に利用されている。
平成 21 年度、研究炉 JRR-3 は 7 サイクルの運転（1 サイクル：26 日連続運転）、JRR-4
については、6 サイクルの施設共用運転（24 日）を行なった。
本報告書は、平成２１年度に実施した施設利用成果の提出を研究炉の利用者（原子力機構外を含む）から受け、中性子散乱 11 分野（構造、磁性、超伝導など）、中性子ラジオグラフィ、即発ガンマ線分析、放射化分析、ラジオアイソトープ製造、その他の分野別についてその研究成果を取りまとめたものである。

原子力科学研究所：〒319-1195

茨城県那珂郡東海村白方白根 2-4i

JAEA-Review 2013-040

Activity Report on the Utilization of Research Reactors (JRR-3 and JRR-4)(Japanese Fiscal Year, 2009)(Ed.) Research Reactor Utilization Section
Department of Research Reactor and Tandem Accelerator
Nuclear Science Research InstituteTokai Research and Development Center
Japan Atomic Energy Agency
Tokai-mura, Naka-gun, Ibaraki-ken(Received September 24, 2013)
JRR-3 is used for the purposes below;- Experimental studies such as neutron scattering, prompt gamma-ray analyses,
neutron radiography- Irradiation for activation analyses, radioisotope (RI) productions, fission tracks- Irradiation test of reactor materialsetc.
JRR-4 is used for the purposes below;- Medical irradiation (Boron Neutron Capture Therapy : BNCT)- Prompt gamma-ray analyses- Sensitivity measurement of radiation detectors- Experiment in the nuclear reactor training- Practice of Reactor operation- Irradiation for activation analyses, RI productions, fission tracksetc.
In the fiscal year 2009, The research reactor JRR-3 was operated 7 cycles (cycle operation :26days/cycle) for utilization sharing of the facility. And JRR-4 was operated 6 cycles (daily
operation : 24 days).
The volume contains 138 activity reports, which are categorized into the fields of neutron
scattering (11 subcategories), neutron radiography, prompt gamma-ray analyses, neutron
activation analyses, RI productions, and others submitted by the users in JAEA and from otherorganizations.
Keywords: JRR-3, JRR-4, Research Reactor, Neutron Scattering, Neutron Radiography,
Neutron Activation Analysis, Neutron Beam, Irradiationii

JAEA-Review 2013-040

目次·························································

1

研究成果一覧 ······················································

3

1. 中性子散乱 ····················································

15

はじめに

1) 構造・励磁 ················································· 152) 磁性 ·····················································

51

3) 強相関電子系 ···············································

874) 非晶質･液体 ················································ 109
5) 高分子 ····················································· 115
6) 生

物 ····················································· 135

7) 基礎物理学･中性子光学 ······································· 1418) 装

置 ····················································· 145

9) 超伝導現象 ················································· 153
10) 残留応力 ··················································· 157
11) その他 ····················································· 1712.

中性子ラジオグラフィ ·········································· 175

3.

即発ガンマ線分析 ·············································· 191

4.

放射化分析 ··················································· 221

5.

ラジオアイソトープ製造 ········································ 275

6.

その他 ······················································· 281

おわりに························································· 303

謝辞····························································· 304

付録····························································· 305

iii

JAEA-Review 2013-040

Contents

Preface··························································

1

Research Reports ··················································

3

1. Neutron Scattering ··············································

151) Structure･Excitation ···········································

152) Magnetism ··················································

51

3) Strongly Correlated Electron Systems

87····························

4) Amorphous・Liquid ··········································· 109
5) Polymer···················································· 115

6) Biology···················································· 135

7) Fundamental Physics・Neutron Optics ···························· 141
8) Instrument·················································· 145

9) Superconductivity10) Residual Stress11) Others············································ 153·············································· 157····················································· 171

2. Neutron Radiography ············································ 175
3. Prompt Gamma-ray Analyses····································· 191

4. Neutron Activation Analyses····································· 221

5. Production of Radio Isotopes ····································· 275
6. Others ························································ 281
Conclusion························································ 303

Acknowledgments ··················································· 304
Appendixes ························································ 305

iv

JAEA-Review 2013-040

は じ め に

平成２１年度には、ＪＲＲ－３において７サイクルの共同利用運転、ＪＲＲ－４において６サイクルの共同利用運転が行われ、これに伴いさまざまな利用が行われた。
本報告書は、利用者（原子力機構外利用者を含む）から当該利用の成果の提出を受け、取りまとめたものである。
提出して頂いた成果の件数は、中性子散乱１１２件、中性子ラジオグラフィ５件、即発ガンマ線分析９件、放射化分析１０件、ラジオアイソトープ製造１件、その他１件で合計
１３８件であった。なお、本報告書の一部は、貴重な研究成果を公開する機会を広げるため、下記報告書の中から転載させて頂いたものである。
最後に、原稿を提出して頂いた利用者の皆様のご協力に感謝するとともに、今後も研究炉が有効に利用され、種々の研究がさらに進展されることを期待します。
研究炉利用課長
笹島 文雄

1)標題 ：ACTIVITY REPORT ON NEUTRON SCATTERINGRESEARCH issued by ISSP-NSL,University of Tokyo,Vol.17（東京大学物性研究所発行）

編者 ：東京大学物性研究所

発 行 年 ：２０１０年
2)標編

題 ：原子力機構施設利用総合共同研究成果報告集（平成２１年度）
者 ：東京大学大学院工学系研究科原子力専攻共同利用管理本部

発 行 年 ：２０１０年- 1-This is a blank page.

JAEA-Review 2013-040

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JAEA-Review 2013-040

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䛂䚷T i t l e䚷䛃
Neutron Scattering - Structure 䞉 Excitation Diffuse Scattering from Lithium Ion Conductors Li1+xGe2-xAlx(PO4)3
Y. Fujita, H. Takahashi, T. Sakuma, N. Igawa
Structure and Properties of Ferroelectric Water Ice
H. Fukazawa, M. Arakawa, H. Kagi
Investigation of coupling between pseudo-spin and phonon in relaxor PMN34%PT
M. Matsuura, K. Hirota
Phase Transition Mechanism of KDP Investigated by Structure Refinement
H. Mashiyama, T. Miyoshi, T. Asahi, H. Kimura, Y. Noda
Oxygen defect structure of oxygen ionic and electronic mixed conductive oxides athigh temperatures
I. Kagomiya, T. Kinoshita, K. Kakimoto, H. Ohsato
Oxygen defect structure of oxygen ionic and electronic mixed conductive oxides athigh temperatures
I. Kagomiya, T. Kinoshita, K. Kakimoto, H. Ohsato
Oxygen defect structure of oxygen ionic and electronic mixed conductive oxides athigh temperatures
I. Kagomiya, T. Kinoshita, K. Kakimoto, H. Ohsato
Oxygen defect structure of oxygen ionic and electronic mixed conductive oxides athigh temperatures
I. Kagomiya, T. Kinoshita, K. Kakimoto, H. Ohsato
Oxygen defect structure of oxygen ionic and electronic mixed conductive oxides athigh temperatures
I. Kagomiya, T. Kinoshita, K. Kakimoto, H. Ohsato
Neutron Diffraction Study of KH3(SeO3)2E. Magome, M. Machida, R. Kiyanagi, H. Kimura, Y. Noda
Oxide and nitride ion distribution effect in crystal structure of new oxynitride superconductor
S. Kikkawa, Y. Masubuchi, T. Motohashi, M. Wakeshima, Y. Oohashi
Structure and phase transitions in a lead-based inorganic-organic perovskites C5H10NH2PbI3
M. Takahashi, T. Kawasaki, M. Nakatsuma, Y. Noda
Atomic and magnetic structures in Pt-3.6 at.% Mn alloy
M. Takahashi, K. Ohshima, H. Kato, Y. Noda
Nuclear diffuse scattering in triangular lattice system LuFeCoO4 with relaxor-like behavior
M. Soda, T. Aoyama, Y. Wakabayashi, K. Hirota
Crystal Structure Analysis of Ruddlesden-Popper Type Sr3Ti1.8Co0.2O7
K. Omoto, H. Yamada, N. Sirikanda, T. Ishihara, M. Yashima
Crystal Structure of Exhaust Gas Catalyst Ceria-Zirconia Nanoparticles CexZr1-xO2
D. Sato, M. Yashima, T. Wakita
Crystal structure analysis of the cubic perovskite-type La0.4Ba0.6CoO3-d
Y. Chen, M. Yashima, T. Ohta, K. Ohoyama
Structure analysis of Imma perovskite-type oxynitride LaTiO2N
M. Saito, M. Yashima, H. Nakano, T. Takata, K. Ogisu, K. Domen
Structure Analysis of Hydroxyapatite by Neutron Powder Diffraction
Y. Yonehara, M. Yashima, H. Fujimori
Crystal Structure, Diffusion Path and Oxygen Permeability of a Pr2NiO4-Based
Mixed Conductor (Pr0.9La0.1)2(Ni0.74Cu0.21Ga0.05)O4+delta
M. Yashima, S. Nuansaeng, T. Ishihara
Study on the electric field-induced lattice deformation in nanocrystalline CuO
M. Hagihala, X. G. Zheng, T. J. Sato, N. Matsuura
A structure study of the double perovskite oxide Ba2NdSn0.3Sb0.7O5.85
H. Kato, M. Yashima, P. J. Saines, B. J. Kennedy
Crystal structure analysis of the perovskite-type silver niobate AgNbO3
S. Matsuyama, M. Yashima, H. Taniguchi, T. Taniyama, M. Itoh
Neutron diffraction study of SnO2-CeO2-SbOx system
K. Nomura, H. Kageyama, C. Minagoshi, Y. Kawabata, T. Maekawa, K. Kanda

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JAEA-Review 2013-040㻝㻙㻝㻙㻞㻡 Effect of Transition-Metal Substitution on Crystal Structure and Ferroelectric
Property of Bi4Ti3O12-Based Oxide
Y. Idemoto, N. Kitamura, T. Iiyama㻝㻙㻝㻙㻞㻢 Acoustic phonon softening in tetragonal BiVO4
I. Tomeno, N. Sato, Y. Sato, K. Oka, Y. Tsunoda㻝㻙㻝㻙㻞㻣 Dependence of Crystal Structure and Protonic Conduction on Compositions in
Gallate-Based High Temperature Protonic Conductors with Layered Structures
Y. Idemoto, N. Kitamurra㻝㻙㻝㻙㻞㻤 Direct Observation of Adsorbed Layer on Metal Surface Using Neutron Reflectometry
T. Hirayama, T. Torii, T. Matsuoka, K. Inoue, M. Hino, D. Yamazaki㻝㻙㻝㻙㻞㻥 Neutron Powder Diffraction Study of Lithium Battery Electrode Materials with
Tunnel Structure
N. Kijima, J. Akimoto, K. Kataoka㻝㻙㻝㻙㻟㻜 Fractal geometry of porous silica studied by SANS experiment
H. Mayama㻝㻙㻝㻙㻟㻝 Analysis of Hydrogen Molecules Chemisorbed on Cu Ions Confined in Solid Nanospace
T. Ohkubo, K. Takahara, A. Itadani, O. Yamamuro, Y. Kuroda

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JAEA-Review 2013-040

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䛂䚷T i t l e䚷䛃
Neutron Scattering - Magnetism Neutron Single-Crystal Diffraction Studies on HoB2C2 under High-Pressure
H. Yamauchi, T. Osakabe, E. Matsuoka, H. Onodera
Influence of Al Substitution on Magnetic Correlation of the Two-Dimensional
Triangular Lattice Antiferromagnet CuCrO2
R. Kajimoto, M. Matsuda, K. Uto, T. Okuda
Pressure-Temperature Phase Diagram of Filled Skutterudite PrFe4P12
T. Osakabe, H. Yamauchi, K. Kuwahara, K. Iwasa, Y. Aoki, H. Sato, M. Kohgi
Spin Waves in MnPS. Yano, M. Nishi, M. Matsuura, K. Hirota, J. Akimitsu
Antiferromagnetic fluctuations in Fe(Se㻝䌦㼤Tex)0.92(x = 0.75, 1)
S. Iikubo, M. Fujita, S. Niitaka, H. Takagi
Magnetic structure in FeTe0.92
S. Iikubo, M. Fujita, S. Niitaka, H. Takagi
Component dependence of magnetic moment in MnRh alloy
Y. Matsuoka, A. Takasaki
Origin of Ferroelectricity induced by Proper-screw Magnetic Structure in
Multiferroic Material CuCrO2
M. Soda, K. Kimura, T. Kimura, M. Matsuura, K. Hirota
Spiral-plane Flop and Rearrangement of Magnetic Domain in Multiferroic Material
CuCrO2
M. Soda, K. Kimura, T. Kimura, K. Hirota
Neutron diffraction study on antiferromagnetism of alkali-metal clusters in sodalite
T. Nakano, A. Hanazawa, M. Matsuura, K. Hirota, Y. Nozue
Non-magnetic-ion substitution in geometrically frustrated systems
M2(OD)3X[M=Co,Fe,Ni,Mn; X=Cl,Br]
X. G. Zheng, M. Hagihala, M. Fujihala
Low temperature magnetism and spin fluctuation in atacamite-type Ni2(OD)3Cl
M. Hagihala, M. Fujihala, X. G. Zheng, Y. Oohara
Inelastic neutron scattering study on crednerite CuMnO2
K. Hayashi, R. Fukatsu, T. Nozaki, T. KajitaniLong-Time Variation of Magnetic Structure in PrCo2Si2
K. Motoya, T. Moyoshi, T. Shigeoka
High energy-resolution inelastic neutron scattering study of the Cu3 molecular magnet
K. Iida, T. J Sato
Substitutioin Effect of Ga for Mn on Magnetic and Dielectric Properties ofMultiferroic YMn2O5
H. Kimura, Y. Sakamoto, M. Fukunaga, Y. Noda, N. Abe, T. Arima, H. Hiraka
Reinvestigation of the magnetic structure in L10-type MnPt powder samples
K. Ogita, I. Tomeno, Y. Tsunoda
High Temperature Multiferroic State in RBaCuFeO5(R=Y, Lu and Tm)
Y. Yasui, Y. Kawamura, S. Tatematsu, M. Sato, K. Kakurai
Neutron diffraction study in triangular spin tube CsCrF4
T. Masuda, H. Manaka
Spin excitations in pyrochlore lattice
K. Tomiyasu, M. Matsuda, H. Ueda, A. Yamamoto
Observations of dynamical spin molecules in geometrically frustrated spinel magnets
K. Tomiyasu, Y. Kousaka, T. Yokobori, A. Tominaga, S. Hara, S. Ikeda
Magnetic excitation in triangular spin tube CsCrF4
T. Masuda, H. Manaka
Anisotropic magnetic correlations and a magnetic field annealing effect in a helicalmagnet ErNi2Ge2
Y. Tabata, M. Okue, T. Yamazaki, T. Waki, H. Nakamura
Modulated Magnetic Structure in the Rare-earth Clathrate Eu8Ga16Ge30
T. Onimaru, C. H. Lee, T. Takabatake

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JAEA-Review 2013-040㻝㻙㻞㻙㻞㻡 Multipolar Transition in a Trigonal Pr4Ni3Pb4 with Non-Kramers Ground State
T. Onimaru, A. Ishida, T. J. Sato, T. Takabatake㻝㻙㻞㻙㻞㻢 Investigation of spin molecule in geometrically frustarted spin system NiS2
M. Matsuura㻝㻙㻞㻙㻞㻣 Spin dynamics in novel Rare-earth based single-molecule magnets
T. Kajiwara, M. Nakano, M. Kofu, O. Yamamuro㻝㻙㻞㻙㻞㻤 Spin dynamics in multiferroics Ba2Mg2Fe12O22
D. Okuyama, N. Kida, S. Ishiwata, Y. Taguchi, K. Iwasa, T. Arima, Y. Tokura㻝㻙㻞㻙㻞㻥 High-energy excitations in BaFe2As2
K. Matan, T. J. Sato

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No.
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䛂䚷T i t l e䚷䛃
Neutron Scattering - Strongly Correlated Electron SystemsMagnetic Correlations in the Pseudogap Phase of Optimally Doped Bi2212
M. Matsuura, Y. Yoshida, H. Eisaki, N. Kaneko, C.-H. Lee, K. Hirota
Study of spin fluctuations in electron-doped antiferromagnetic phase ofPr㻝㻚㻠䌦㼤La0.6CexCeO4
M. Fujita, M. Nakagawa, K. Yamada
Uniaxial pressure induced magnetic phase of CuFe㻝䌦㼤GaxO2 (x = 0.018)
T. Nakajima, S. Mitsuda, K. Takahashi, K. Yoshitomi, R. Kiyanagi, Y. Noda, N. Aso,Y. Uwatoko
Hole-doping dependence of spin excitation in Bi2201 high-Tc cuprate system
M. Fujita, M. Enoki, Y. Ai, S. Iikubo, K. Yamada
Inelastic Magnetic Scattering of Fe oxypnictide superconductors
S. Tatematsu, T. Moyoshi, Y. Yasui, M. Sato, K. Kakurai
Investigation of 4f electronic state and atomic vibration in rare-earth based
compounds by neutron scattering
K. Iwasa, K. Saito, R. Igarashi, H. Kobayashi
Crystal structure and Magnetic Property of PrxFe4Sb12
K. Iwasa, T. Orihara, Y. Murkami, K. Kuwahara, H. Sugawara
Magnetic Excitations of CeRh1-xCoxIn5
M. Yokoyama, Y. Ikeda, D. Nishikawa, H. Amitsuka, K. Tenya
Phonon dynamics of iron-based superconductors
C. H. Lee, K. Kihou, K. Horigane, H. Eisaki, A. Iyo, M. Braden, K. Yamada
Relationship between crystal structure and superconductivity in iron-based superconductors
C. H. Lee, K. Kihou, H. Eisaki, A. Iyo, M. Braden, K. Yamada
Substituting dependence of the ordered moment in BaFe2(As,P)2
S. Ibuka, K. Matan, T. J. Sato
Competition or coexistence of multiple order parameters in the heavy fermion
antiferromagnet CeRh㻝䌦㼤IrxIn5
K. Deguchi, N. Aso, K. Wakishima, Y. Ishikawa, Y. Maeda, N. K. Sato, H. Yoshizawa
Pressure-induced release of magnetic frustration in a quasi-kagome lattice YbAgGe
K. Umeo, H. Kubo, T. Onimaru, K. Katoh, N. Aso, T. Takabatake
Magnetic structure of Nd1/3Sr5/3MnO4
Y. Oohara, M. Kubota, H. Kuwahara
Competition or coexistence of multiple order parameters in the heavy fermion
antiferromagnet CeRh㻝䌦㼤IrxIn5
K. Deguchi, N. Aso, K. Wakishima, Y. Ishikawa, Y. Maeda, N. K. Sato, H. Yoshizawa
Pressure induced superconductivity in SrFe2As2
K. Munakata, S. Ibuka, H. Ishida, K. Matan, K. Ohgushi, M. Nishi, Y. Uwatoko, T. J. Sato䛂䚷T i t l e䚷䛃
Neutron Scattering -Amorphous 䞉 LiquidMixing State of Benzene Solutions of Imidazolium-based Ionic Liquid, C12mim+TFSAT. Shimomura, T. Takamuku
Intermolecular Structure between Urea Molecule and Metal Ions in Concentrated
Aqueous Solutions
Y. Kameda, T. Miyazaki, S. Onodera, Y. Amo, T. Usuki
Diffusional dynamics of water molecules in lower alcohol aqueous solutions at low
temperature.
K. Maruyama, M. Nakada, T. Kikuchi, O. Yamamuro
In-situ neutron quasi-elastic scattering of meso-porous silica modified by sulfo groupT. Otomo, S. Takata, K. Kamazawa, S. Fujita, M. Kofu, O. Yamamuro

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JAEA-Review 2013-040

No.
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No.
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䛂䚷T i t l e䚷䛃
Neutron Scattering - Polymer Combined SANS, WANS, and Weighing Studies of Microbial Cellulose in Drying Process
Y. Zhao, S. Koizumi, T. Hashimoto
Distribution and Accumulation of Water in the Polymer Electrolyte Fuel Cell
Performed by Small-Angle Neutron Scattering
A. Putra, D. Yamaguchi, S. Koizumi
Characterization of Swollen Structure of High-density Polyelectrolyte Brushes inSalt Solution by Neutron Reflectivity
Y. Terayama, M. Kobayashi, A. Takahara
Detailed analysis for shish-kebab structural formation process with small angle
neutron scattering
G. Matsuba, K. Kawashima, K. Nishida, T. Kanaya
Dynamics of nano-meter-sized domains on a vesicle
M. Imai, Y. Sakuma
Vesicle structures below the Krafft temperature in a surfactant solution-Hyperswollen lamellar phase coexisting with vesiclesY. Kawabata, T. Shinoda, T. Kato
Order-Order Transition of Block Copolymers Swollen with Supercritical Carbon Dioxide
H. Yokoyama, M. Ito, K. Mayumi, K. Ito, M. Shibayama, H. Endo, T. Suzuki
Exclusive volume effect on uni-lamellar vesicles by addition of polymers
N. L. Yamada
States of Poly(methyl methacrylate) Monolayers Supported on Substrates in Non-solvents
H. Atarashi, K. Hori, N. Kai, A. Horinouchi, Y. Fujii, M. Hino, K. Tanaka
Aggregation States and Dynamics of Poly(methyl methacrylate) at Interfaces with Non-solvents
H. Atarashi, H. Endo, M. Shibayama, K. Tanaka
Nano-sized clusters in the mixture of D2O/H2O in the presence of 3-methylpyridine
H. Seto, K. Sadakane
Pressure induced disorder/lamellar phase transition in the mixture of water/organic
solvent/salt
H. Seto, K. Sadakane
LCST Phase Behavior of Poly(benzyl methacrylate) in Room-temperature Ionic
Liquid studied by SANS
M. Shibayama, K. Fujii, T. Matsunaga, T. Ueki, M. Watanabe
Dynamic and Static Structure Analyses of Super-homogeneous Tetra-PEG gel
T. Sakai, T. Matsunaga, M. Shibayama, U. Chung
Chain conformation of highly-purified ring polymer in bulk and the blending effectof linaer polymers
A. Takano, Y. Ohta, Y. Matsushita䛂䚷T i t l e䚷䛃
Neutron Scattering - Biology Neutron Diffraction Study of Porcine Pancreatic Elastase under Active Conditions
T. Tamada, T. Kinoshita, T. Ohhara, K. Kurihara, T. Tada, R. Kuroki
Dynamic of Water Molecule in a Crowding Environment Studied by Neutron
Quasi-Elastic Scattering
H. Nakagawa
Determination of Lipid Transfer Activity of Phospholipid Transfer Proteins by
Time-Resolved SANS
M. Nakano, M. Fukuda, Y. Wada, M. Kaihara, H. Endo
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M. Sugiyama, E. Kurimoto, T. Fukunaga, K. Kato

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JAEA-Review 2013-040

No.
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No.
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No.
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No.

䛂䚷T i t l e䚷䛃
Neutron Scattering - Fundamental Physics 䞉 Neutron Optics Development of Jamin-Type Cold Neutron Interferometer with Complete Path Separation
Y. Seki, M. Kitaguchi, M. Hino, H. Funahashi, Y. Otake, K. Taketani, H. M. Shimizu
Development of cold neutron interferometer for pulsed source
M. Kitaguchi, M. Hino, H. Funahashi, Y. Seki, K. Taketani, H. M. Shimizu
䛂䚷T i t l e䚷䛃
Neutron Scattering - Instrument Influence of Interfacial Roughness Correlation on Reflectivity of Neutron Multilayer Mirrors
R. Maruyama, D. Yamazaki, T. Ebisawa, K. Soyama
Development of a High-Spatial-Resolution Neutron Detector with
Wavelength-Shifting Fibre Read Out
T. Nakamura, M. Katagiri, K. Toh, K. Sakasai, S. Soyama
Visualization of Electric Current by Neutron Spin Phase Contrast Imaging
S. Tasaki, Y. Iwata, T. Tanaka, Y. Abe, M. Hino
Development of MIEZE spectrometer for pulsed neutrons
M. Kitaguchi, M. Hino, Y. Kawabata, S. Tasaki, R. Maruyama, T. Ebisawa䛂䚷T i t l e䚷䛃
Neutron Scattering - Superconductivity Structural Analysis on Iron-Based Superconductor Pr1111 System with Oxygen
Deficiency and Flourine Substitution
K. Kodama, M. Ishikado, F. Esaka, A. Iyo, H. Eisaki, S. Shamoto
Doping Dependence of Magnetic Excitation in Fe-based Superconductor LaFeAsO1-xFx
S. Wakimoto, K. Kodama, M. Ishikado, M. Matsuda, R. Kajimoto, M. Arai, K. Kakurai, F. Esaka
A. Iyo, H. Kito, H. Eisaki, S. Shamoto
䛂䚷T i t l e䚷䛃

Neutron Scattering - Residual Stress 㻝㻙㻝㻜㻙㻝 Evaluation of Compressive Deformation Behavior of Zr-Al-Ni-Cu Balk
Metallic Glass Containing ZrC Particles by Neutron Diffraction
H. Suzuki, J. Saida, J. Katsuyama, M. Imafuku, H. Kato, S. Sato㻝㻙㻝㻜㻙㻞 A development study of a neutron method for measuring stress distribution
by an area detector
T. Sasaki㻝㻙㻝㻜㻙㻟 Internal Stress Measurement of Coarse Grain in Aluminum Casting Alloyby Neutron diffraction
M. NishidaNo.

䛂䚷T i t l e䚷䛃

Neutron Scattering - Others 㻝㻙㻝㻝㻙㻝 Renovation of Ge-crystal monochromator for triple-axis neutron spectrometer AKANE
H. Hiraka, Y. Miyake, K. Ohoyama, Y. Yamaguchi, K. Yamada㻝㻙㻝㻝㻙㻞 Activity in 2009 of Kinken Powder Diffractometer HERMES
K. Ohoyama- 11 -

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JAEA-Review 2013-040

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Neutron Radiography
Development of the Imaging System Using a Neutron Color Image Intensifier
R. Yasuda, T. Nojima, H. Iikura, T. Sakai, M. Matsubayashi
Upgrading of Experimental Circumstances in TNRF
T. Nojima, H. Iikura, R. Yasuda, T. Sakai, H. Hayashida, M. Matsubayashi
Three-Dimensional Observation of Water Distribution in PEFC by Neutron CT
N. Takenaka, H. Asano, H. Murakawa, K. Sugimoto, R. Yasuda, M. Matsubayashi
Development of Visualization and Measurement Method using Neutron Radiography
for Thermal Hydraulics Phenomena in Energy Equipment
N. Takenaka, H. Asano, H. Murakawa, K. Sugimoto, K. Mochiki
Development of High Performance Imaging System for Neutron Image Intensifier
K. Mochiki, Y. Wada, M. Okazaki, Y. Otsuka
䛂䚷T i t l e䚷䛃㻌Prompt Gamma-ray Analyses
A Study on Improving the Linearity of Flash ADCs Using Neutron-capture Prompt Gamma Rays
K. Furutaka, A. Kimura
Development of a New Method to Identify Nuclear Levels on Neutron Capture Reactions
T. Kin, K. Hara, M. Oshima
Neutron Flux Correction for Standard Rice Sample Measurement in MPGA
Y. Toh, Y. Murakami, M. Oshima, M. Koizumi
Multiple prompt 䃒-ray measurements of the 74Ge(n,䃒)75Ge reaction
K. Y. Hara, T. Kin, M. Oshima
Neutron-induced prompt gamma-ray analysis ofsolid environmental samples and geochemical samples (V)M. Matsuo, A. Kuno, K. Shouzugawa, A. Hasegawa, D. Moromachi, A. Takahashi, S. Yamanoi
N. Hara, M. Fujii
Prompt gamma-ray analysis of meteorite samples
M. Ebihara
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T. Fukuoka, H. Shinjo, T. Shindo, K. Aoki, H. Kusuno, A. Miura, Y. Egawa, M. Seki
Prompt Gamma-ray Analysis of Limestone for the Initial Application of
In-situ-produced Cosmogenic 36Cl in Calcite for Quantifying Earth Surface Processes
K. Sueki, Y. Matsushi, K. Sasa
Compositions of Southwestern Japan arc magmas andcharacterization of subduction components
T. Hasenaka, M. Miyoshi, M. Shimono, Y. Sekiguchi, N. Hori, T. Tamura, S. Ariga, Y. UedaNo.

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Neutron Activation Analyses
Studies on Cosmo-geochemical materials by neutron activation analysis (䊡䊡)T. Fukuoka, Y. Saito, M. Ishimoto, H. Kusuno, T. Shindo, A. Miura, Y. Sugiuchi, K. Aoki
Y. Shimada, T. Uno, Y. Tazawa
Determination of 53Mn in Meteorites by Neutron Activation Analysis (II)Y. Ouraϫ)
Geoenvironmental assessment using INAA(ϫʊ$FFXUDWHDQDO\VLVRISODWLQXPJURXSHOHPHQWVDQGUKHQLXPLQJHRORJLFDOVDPSOHVE\
LVRWRSHGLOXWHG1$$ʊ
M. Takeda, T. Tanaka, M. Minami, Y. Asahara, K. Suzuki, K. Hayashi, H. Tanaka
Quantitative analysis of trace metals in marine bacteria
H. Minowa
Determination of elements of agricultural crop and soil
T. Nakanishi- 12 -

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JAEA-Review 2013-040

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INAA analysis of hair samples
K. Toyoda, H. Kawamura, A. Rahayu
Distribution and Accumulation Characteristics of Extractable Organic Halogens (EOX)
in Organs and Tissues of Great Cormorant
M. Kawano, M. Matsuda
Analysis of QTL related to trace elements accumulation in seeds of Lotus japonicus
J. Furukawa
An analytical study on biohazardous trace metals in Diesel Exhaust Particles (DEP)
S. Kasahara, Y. Noya, K. Seki, Y. Kuge
NEUTRON ACTIVATION ANALYSIS OF ARSENIC CONTENTS IN SOILS OF THE
GANGES RIVER BASIN
K. Tanabe䛂䚷T i t l e䚷䛃

No.
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No.
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Production of Radio Isotopes
Au Mössbauer study of Au nano-clusters (2)Y. Kobayashi, Y. Honma

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K. Asakura, T. Koseki- 13 -

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1. Neutron Scattering

1 Structure࣭Excitation- 15 -

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JAEA-Review 2013-040

1-1-1
Diﬀuse Scattering from Lithium Ion Conductors Li1+x Ge2−x Alx (PO4 )3
Y. Fujita, H. Takahashi, T. Sakuma1 and N. Igawa2
Graduate School of Science and Engineering, Ibaraki University, Hitachi, Ibaraki 316-8511
1Graduate School of Science and Engineering, Ibaraki University, Mito, Ibaraki 310-8512
2
Quantum Beam Science Directorate, JAEA, Tokai, Ibaraki 319-1195

LiGe2 (PO4 )3 is a inorganic compound thathas a so-called NASICON-type structure andindicates high Li+ ion conduction. The substitution of Ge4+ ions by Al3+ ion makes the
conductivity enhancement 1) . The chemical
formula for Al-substituted compound is expressed such as Li1.5 Ge1.5 Al0.5 (PO4 )3 , which
is abbreviate as LGA5. The crystal structuresof Al-free LGA0 and LGA5 are identical andthe space group is R-3c. The purpose of thepresent study is to elucidate the structuralfeature of LGA5 having enhanced ionic conduction. In the present study, neutron diﬀraction experiments were performed for LGA0and LGA5 at 10 and 300K by HRPD installedat JRR-3M. Diﬀuse scattering patterns fromLGA0 at 10 and 295K are shown in Fig. 1(A). The proﬁle and temperature dependenceof diﬀuse scattering is well described by thermal diﬀuse scattering of Li-O, P-O and Ge-O
correlations as shown by the solid curves 2) .
On the other hand, the diﬀuse scattering intensity from LGA5 is rather strong and lesstemperature dependent compared to that of

LGA0 as shown in Fig. 1 (B). Moreover thediﬀuse scattering proﬁle could not be fully reproduced only by the thermal diﬀuse scattering terms. Some disagreements between theexperimental diﬀuse scattering and the calculated one would arise from the static disorder of Li+ ions. Main part of the disagreements correspond to the diﬀuse oscillation
having correlation length of 2.7Å. Rietveld
and MEM analyses for LGA5 indicate that
the Li+ ions distribute the stable 6b site, 36f
site and around 18e site, although the Li+
ions exclusively occupy 6b site in LGA0. It
is considered that the statistical distributionof Li+ ions in several sites is responsible tothe temperature-insensitive diﬀuse scatteringin LGA5.
References
1) S. Li, J. Cai and Z. Lin :“Solid State Ionics”,
28-30, 1265 (1988).
2) T. Sakuma, Y. Nakamura, A. Murakami, H. Takahashi and Y. Ishii :“High Temp. Mater. Proc.”,
18, 41 (1999).

Figure 1: Diﬀuse scattering proﬁles from neutron diﬀraction at 10 and 295K. Solid lines are ﬁtting curves by
the thermal diﬀuse scattering terms from Li-O, P-O and Ge-O correlations. (A) and (B) are LGA0 and LGA5,
respectively.

原子炉：JRR-3

装置：HRPD(1G)

分野：中性子散乱（構造）- 17 -

JAEA-Review 2013-040

1-1-2
Structure and Properties of Ferroelectric Water Ice
H. Fukazawa1 , M. Arakawa1,2 and H. Kagi1,2
1

2

Quantum Beam Science Directorate, JAEA, Tokai, Ibaraki 319-1195
Graduate School of Science, The University of Tokyo, Tokyo 113-0033

Whether or not ice exists as ice XI anywhere in the universe is a question that has
attracted interest in astrophysics and physicalchemistry because of its ferroelectric nature.
Long-range electrostatic forces caused by thisferroelectricity might be an important factor
in planet formation [1-11]. The existence of
ice XI on Pluto and Charon and the formation of ice XI in space have been predicted.
Our neutron diﬀraction study provides ﬁrm
evidence that hydrogen with a positive charge
is aligned along the c-axis and ice XI becomesferroelectric (Fig. 1(a)). However, clear evidence of the existence of ferroelectric ice inthe universe has not been obtained.
From neutron diﬀraction and scattering
measurements, we have studied ice with impurities, such as potassium, sodium andlithium, that acted as a catalyst. We foundthat the doped ice that has once been converted to ice XI is a stronger ferroelectric ice
than that has never been converted. We also
observed the existence of the ferroelectric ice
under high-pressure and its formation fromcompressed amorphous ice. The results suggest that a cool icy body in space has a thicklayer of ferroelectric ice (Fig. 2(b)). Furthermore, we investigated spectral and vibrational
properties of ferroelectric ice investigated byinelastic neutron scattering and infrared absorption measurements. Because the spectral
properties of ferroelectric ice are clearly different from those of ordinary ice, the distinct
ferroelectric ice in the universe is detectableusing infrared telescopes.
References
1) H. Fukazawa, et al. :“Astrophys. J. Lett.”, 652,
pp. L57-L60 (2006).
2) H. Fukazawa, et al. :“Physica B”, 385-386, pp.
113-115 (2006).
3) H. Fukazawa :“JAEA RD Review”, p. 43 (2007).
4) H. Fukazawa :“Planetary People”, 16, pp. 7-12

原子炉：JRR-3

装置：TAS-2(T2-4)(2007).
5) H. Fukazawa :“Hamon (The Japanese Society for
Nuetron Science)”, 18, pp. 97-102 (2007).
6) H. Fukazawa :“Low Temperature Science”, 66,
pp. 159-167 (2008).
7) H. Fukazawa :“J. Crystallog. Soc. Jpn.”, 51, pp.
84-85 (2009).
8) H. Fukazawa et al. :“Nucl. Instrum. Methods Phys.
Res. A”, 600, pp. 279-281 (2009).
9) M. Arakawa, et al. :“Astrophys. J. Suppl. Ser.”,
184, pp. 361-365 (2009).
10) M. Arakawa, et al. :“J. Mol. Struct.”, 972, pp.
111-114 (2010).
11) M. Fukazawa :“Radioisotopes”, 59, pp. 239-247(2010).



Figure 1: (a)Structure of ferroelectric ice XI. Scattering length density map of ice XI with hydrogenordered arrangement; obtained from the maximum
entropy analysis for neutron powder diﬀraction.
(b)Existence of thick ferroelectric ice in cool icy body.

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1-1-3

Investigation of coupling between pseudo-spin and phonon in relaxor PMN34%PT
M. Matsuura and K. Hirota
Department of Earth and Space Science, Faculty of Science, Osaka University, Toyonaka,
560-0043.
Relaxor ferroelectrics gain much attention due to their extreme piezoelectric responses over a wide temperature range. It
is widely believed that polar nanoregion(PNR), a local nanometer-sized region withferroelectric polarization and atomic shift,plays an important role in the relaxor behavior. PMN-xPT system is a solid solution of typical relaxor Pb(Mg1/3 Nb2/3 )O3(PMN) and normal ferroelectric PbTiO3(PT). With increasing x, PMN-xPT system change its dielectric response from relaxor to normal ferroelectric. Last year,
we have found the dipole motions in PNR
couple with phonon modes in the relaxor PMN-30%PT, which is explained bypseudospin-phonon coupled model.[1] To
study the change of pseudo-spin phonon
coupling towards normal ferroelectric, we
explored the phonon spectrum in PMN34%PT. Neutron scattering experiments
were performed on the triple-axis spectrometer HER and PONTA installed at the
JRR-3 of JAEA.
Figures 1 show the contour map of thephonon scattering intensity at (1 + q, 1 −q, 0) measured at T = 400 K. For (a)PMN-30%PT, the transverse acoustic (TA)mode below 2 meV is heavily overdamped,
while the TA mode above 2 meV is underdamped. For (b) PMN-34%PT, the upper
energy of the damped TA mode increases
to 4 meV. From the pseudospin-phonon
coupled model, a damping of phononmodes is associated with a coupling between phonon modes and pseudospin ﬂipping motion. The increase of the damping
energy region with increasing PT-ratio suggests that the pseudospin ﬂipping becomes
fast towards normal ferroelectric.
References

Fig. 1. Intensity contour map of the phonon scattering intensity at (1 + q, 1 − q, 0) as a function of q andenergy measured at T = 400 K.

[1] Y. Yamada et al., J. Phys. Soc. Jpn, 36 641(1974).
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1-1-4

Phase Transition Mechanism of KDP Investigated by Structure Reﬁnement
H. Mashiyama A , T. Miyoshi A , T. Asahi A , H. KimuraB , Y. NodaB
A Fac. Sci., Yamaguchi Univ., B IMRAM, Tohoku Univ.
In the room temperature phase of KDP(KH2 PO4 ), a proton occupies two sites disorderly. Below Tc = 123 K, the proton
is localized near one of the oxygen atoms,
and a spontaneous polarization appears
along the c-axis; perpendicular to the proton ordering. If protons are replaced bydeuterons, the transition temperature elevates about 90 K, which is a well known
isotope effect of this crystal. In order tounderstand the relation between the proton ordering and ferroelectricity, we havereﬁned the crystal structure by the use ofneutron diffraction intensity from the single crystal mounted on FONDER (T2-2).
Figure (a) displays the atomic displacement
through the phase transition. Correlatedwith the proton ordering below Tc , P and
K ions shift along the c-axis, while O atoms
remain almost the same positions. Thismeans that the O-P bond length and the
O-P-O bond angle of a PO4 tetrahedronchange about 0.03 Å and 5 ◦ , respectively,
below Tc , with accompanying the translation of K. Such displacements of P and K
induce the spontaneous polarization along
the c-axis.
Although the atomic displacements arerather large at Tc , the thermal vibration amplitudes change continuously through Tc
as shown in Fig.(b). Here the split atom
method is applied for H atoms above Tc .
The broken lines are refereed to Nelmes etal [J. Phys. C: 15 (1982) 59].
We note that the atomic displacementsof K and P are√ smaller than the thermal parameters, U33 , which suggests that
all the heavy atoms vibrate within single minimum potentials except for protons(deuterons). On the other hand, hydrogenatoms are successfully represented by the
double peaked distribution (split atoms) inaccordance with the disordered picture ofhydrogen.

It is well known that the crystal is piezoelectric and the elastic constant softens
completely, while the dielectric constantbecomes large but remain ﬁnite at Tc . Considering all the above facts together, weconsider that proton ordering distorts thePO4 tetrahedron, i.e. stabilizes a H2 PO4molecular; which induces the elastic deformation of the unit cell, as well as the appearance of the spontaneous polarization.
This picture of structural transitions is neither a pure order-disorder nor a displacive
type, but so to say a chemical instability
type.

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
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1-1-5

Oxygen defect structure of oxygen ionic and electronic mixed conductive oxides athigh temperatures
Kagomiya I, Kinoshita T., Kakimoto K. and Ohsato H.
Nagoya Institute of Technology
Single crystals of SrFeO3-d were prepared
to use for neutron diffraction analysis. The
crystal structure parameter was reﬁned as
Cmmm. It was found that the isotropic
temperature factors Uiso of Sr(1) and theO(2) were relatively larger compared to thegeneral case, suggesting that ion vibrationof the Sr(1) and the O(2) ions is much active. It is considerable that a facile transportation path for O2- ions are on the a-cplane, because both Sr(1) and O(2) ions arelocated in the a-c plane.

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
Report Number: 1036

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1-1-6

Oxygen defect structure of oxygen ionic and electronic mixed conductive oxides athigh temperatures
Kagomiya I, Kinoshita T., Kakimoto K. and Ohsato H.
Nagoya Institute of Technology
Single crystals of SrFeO3-d were prepared
to use for neutron diffraction analysis. The
crystal structure parameter was reﬁned as
Cmmm. It was found that the isotropic
temperature factors Uiso of Sr(1) and theO(2) were relatively larger compared to thegeneral case, suggesting that ion vibrationof the Sr(1) and the O(2) ions is much active. It is considerable that a facile transportation path for O2- ions are on the a-cplane, because both Sr(1) and O(2) ions arelocated in the a-c plane.

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
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1-1-7

Oxygen defect structure of oxygen ionic and electronic mixed conductive oxides athigh temperatures
Kagomiya I, Kinoshita T., Kakimoto K. and Ohsato H.
Nagoya Institute of Technology
Single crystals of SrFeO3-d were prepared
to use for neutron diffraction analysis. The
crystal structure parameter was reﬁned as
Cmmm. It was found that the isotropic
temperature factors Uiso of Sr(1) and theO(2) were relatively larger compared to thegeneral case, suggesting that ion vibrationof the Sr(1) and the O(2) ions is much active. It is considerable that a facile transportation path for O2- ions are on the a-cplane, because both Sr(1) and O(2) ions arelocated in the a-c plane.

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
Report Number: 1039

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JAEA-Review 2013-040

1-1-8

Oxygen defect structure of oxygen ionic and electronic mixed conductive oxides athigh temperatures
Kagomiya I, Kinoshita T., Kakimoto K. and Ohsato H.
Nagoya Institute of Technology
Single crystals of SrFeO3-d were prepared
to use for neutron diffraction analysis. The
crystal structure parameter was reﬁned as
Cmmm. It was found that the isotropic
temperature factors Uiso of Sr(1) and theO(2) were relatively larger compared to thegeneral case, suggesting that ion vibrationof the Sr(1) and the O(2) ions is much active. It is considerable that a facile transportation path for O2- ions are on the a-cplane, because both Sr(1) and O(2) ions arelocated in the a-c plane.

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
Report Number: 1040

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JAEA-Review 2013-040

1-1-9

Oxygen defect structure of oxygen ionic and electronic mixed conductive oxides athigh temperatures
Kagomiya I, Kinoshita T., Kakimoto K. and Ohsato H.
Nagoya Institute of Technology
This study tries to investigate the faciletransportation paths for O2- ions. We propose that the information leads to a precept to improve oxygen permeation by controlling the O2- transportation path. Witha ﬁrst step of this study, we prepared single crystal of SrFeO3-d and then investigated the crystal structure as well as oxygen vacancies structure at 500 K. Basedon the analyzed structures, we discussed
facile transportation paths for O2- ions in
SrFeO3-d.
The crystal structure parameter at 500 K
was reﬁned as Cmmm, which is same as
the structure at r.t.

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
Report Number: 1041

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1-1-10

Neutron Diﬀraction Study of KH3 (SeO3 )2E. Magome1 , M. Machida2 , R. Kiyanagi3 , H. Kimura3 and Y. Noda3
1 Kyushu Synchrotron Light Research Center, Tosu, Saga, 841-0005
2 Department of Physics, Kyushu University, Higashi-ku, Fukuoka, 812-8581
3 Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai,
980-8577
Potassium
trihydrogen
selenite,
KH3 (SeO3 )2 (abbreviated to KTS) undergoes a second-order phase transition
from a paraelastic phase with space groupPbcn to a ferroelastic phase with spacegroup P21 /b at TC = 212 K.[1] The ferroelastic phase transition at TC shows arelatively large isotope effect by deuteration with ΔTC  75 K.[2] In order toelucidate the isotope effect appeared in
the structure of hydrogen bonds, we have
performed detailed structure analyses of
KTS in paraelastic phase.
Neutrondiffraction
measurements
were made on a four-circle diffractometer
FONDER at JRR3M reactor in JARERI,
Tokai. Neutrons monochromized by aGe(311) monochromater were used, where
wavelength is 1.239 Å. Diffraction data up
to 2θ ≤ 156◦ were collected at T = 227 K
in paraelastic phase. Independent 654
reﬂections with | FO | ≥ 3σ (| FO |) wereused for the structure reﬁnements. Atomic
parameters were reﬁned by least-squared
calculations assuming an anisotropic
secondary extinction effect. Nuclear density was estimated by PRIMA.[3] The
lattice parameters are a = 16.129(5) Å,b = 6.230(5) Å, c = 6.292(2) Å at
T = 227 K.
Figure 1(a) shows the crystal structure
determined in paraelastic phase. The hydrogen bond chains are formed along thec-axis by mutually linking SeO3 tetrahedra through the hydrogen bonds with H1.
Moreover, the chains are interconnected by
the hydrogen bonds with H2 disorderedover two sites. The O-H1-O and O-H2O hydrogen bond distances are 2.601(2) Å
and 2.550(2) Å, respectively. Figure 1(b)shows the nuclear density distribution for

H2 derived by the MEM analysis. Nuclear density map clearly indicates doubly
peaked distributions elongated along thehydrogen bond direction. The isotope effect is discussed in the two-dimensional
potential model on the basis of the nuclear
density distribution for the proton.
References[1] L. A. Shuvalov et al.:Sov. Phys. Crystallogr.
12 (1967) 315.
[2] Y. Makita et al.:J. Phys. Soc. Jpn. 44 (1978)
225.
[3] F. Izumi and R. A. Dilanian:Transworld Research Network, Trivandrum 3 (2002) 699.

Fig. 1. (a) Crystal structure of KH3 (SeO3 )2 in paraelastic phase. (b) Nuclear density distribution for
H2+ derived by the MEM analysis.

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
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JAEA-Review 2013-040

1-1-11Oxide and nitride ion distribution eﬀect in crystal structure of new oxynitride
superconductor
S. Kikkawa(1), Y. Masubuchi(1), T. Motohashi(1), M. Wakeshima(2), and Y. Oohashi(1)(1) Graduate School of Engineering, Hokkaido University, Sapporo, 060-8628, Japan and (2)Graduate School of Science, Hokkaido University, Sapporo, 060-0810, Japan
Oxynitrides are new materials having interesting chemical and physical properties, because they have characteristic between oxides and nitrides. Unexpected
electronic/optical properties are appearing
due to a variation in cation-anion covalency in coexistence of oxide and nitrideions. Recently, our research group have reported that Nb-Al oxynitride having therock salt type crystal lattice showed superconductivity with Tc = 15 K [1]. Afterannealing at 1100 oC in evacuated sealed
tube, its rock salt crystal improved the crystallinity and its superconducting volume
fraction increased above 30%. In this study,
we investigated the crystal structure andoxide/nitride ionic distribution in the NbAl oxynitrides before and after thermal annealing.
Nb-Al oxynitride was prepared by a gel nitridation method [1]. As nitrided powder
was post annealed at 1500 oC for 3 h in
0.5 MPa of nitrogen atmosphere. Neutron
diffraction measurements at room temperature were carried out with the diffractometer HERMES installed at the JRR-3M
reactor in Japan Atomic Energy Agency,
Tokai, Japan. Program RIETAN-2000 [2]was used for the structure reﬁnement.
The observed, calculated and difference
neutron diffraction proﬁles for the post annealed Nb-Al oxynitride having the starting composition of Nb:Al = 0.75:0.25 areshown in Fig. 1. Small amount of impurities
was observed in the diffraction proﬁle. The
structure reﬁnement and oxygen/nitrogen
analysis showed the composition of therock salt type Nb-Al oxynitride in the
post- annealed products was reﬁned to be(Nb0.89(1)Al0.11(1))(O0.16(1)N0.84(1)) independent of their starting compositions.
Cation sites were randomly occupied byboth Nb and Al. Both oxide and nitride ionswere also randomly distributed on anion
sites in the oxynitride. Recently we haveobtained single phase of Nb-Al oxynitrideat Nb:Al = 0.89:0.11 and its showed Tc =17 K and 91% of superconducting volume
fraction after its thermal annealing.
References[1] S. Yamamoto, et al., J. Alloys Compd.,
482 (2009) 160-163.
[2] F. Izumi and T. Ikeda, Mater. Sci., Forum, 198 (2000) 321-324.

Fig. 1. Neutron diffraction proﬁles for the post annealed Nb-Al oxynitride at Nb:Al = 0.75:0.25.

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
Report Number: 1044

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JAEA-Review 2013-040

1-1-12

Structure and phase transitions in a lead-based inorganic-organic perovskites
C5H10NH2PbI3
Miwako Takahashi(A), Takurou Kawasaki(A), Munehiko Nakatsuma(A) and Yukio
Noda(B)(A)IMS., Univ. of Tsukuba, (B)IMRAM, Tohoku Univ.
Structural phase transitions have beenstudied for a lead-based inorganic-organic
perovskites C5H10NH2PbI3. The structure undergoes temperature-induced successive phase transitions: phase I at room
temperature, phase II for 255.5K to 284.5K,
phase III for 250K to 255.5K and phase
IV below 250K. From the single crystal diffraction measurements at FONDER,
Bragg peak splitting was observed at phase
II. The angle of splitting increases gradually with decreasing temperature, while
the integrated intensity being almost constant (Fig. 1(a) ).The result indicates thatthe structure changes from orthorhombic atphase I to monoclinic at phase II. Superlattice reﬂections appear below the transition temperature from phase I to II. The intensity increases with decreasing temperature (ﬁg. 1(b), red circles). At phase III,
peaks appear at which reﬂections are forbidden for C2221 (ﬁg.1(b), blue circles). The
results are interpreted as that the structure changes from C2221 (Phase I) to P21
with keeping the same volume of unit cell(phase II) , and to P21 with enlarging thevolume twice (phase III) .

Fig. 1. Temperature dependences of intensity andangle splitting for (400) fundamental peak (a) andfor (1/2 -7/2 4) and (2 -11 0) superlattice peaks (b).

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
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1-1-13

Atomic and magnetic structures in Pt-3.6 at.% Mn alloy
M. Takahashi(A), K. Ohshima(A), H. Kato(A) and Y. Noda(B)(A)IMS., Univ. of Tsukuba, (B)IMRAM, Tohoku Univ.
Atomic and magnetic structures are studied for Pt-13.6 at.%Mn alloy. Pt-rich PtMn alloys have two atomic ordered phasesof Cu3Au-type (high temperature phase)and ABC6-type (low-temperature phase)
below order-disorder transition temperatre
from fcc disordered phase. Analyzing ratios of Bragg intensities at Gamma points,
X-points and L-points of fcc fundamental lattice, it is found that the ABC6- typeordered structure is formed in the alloy
with the order parameters S1 and S2 being 0.99 and 0.68, respectively (Fig. 1(a)).
Incommensurate magnetic peaks are observed at around (x 1+x 1/2) and its equivalent points of fcc fundamental lattice with
x=0.7. The magnetic intensities increases
gradually below 30K (Fig.1(b)) which ishigher than spin-glass transition temperature TG= 17K determined by magnetic susceptibility for the alloy. The wave vector of
the incommensurate magnetic structure x
increases with increasing Mn concentration(Fig.1(c)), indicating that its origin is Fermisurface nesting effect .

Fig. 1. (a)Integrated Bragg intensities at fundamental, X- and L-points. (b)Temperature dependence of
the integrated intensities of incommensurate magnetic scattering. (c)Concentration dependence of incommensurate wave vector of the magnetic structure.

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
Report Number: 1047

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JAEA-Review 2013-040

1-1-14

Nuclear diﬀuse scattering in triangular lattice system LuFeCoO4 with relaxor-likebehavior
Minoru Soda1, Takuya Aoyama2, Yusuke Wakabayashi1, and Kazuma Hirota2
1 Division of Material Physics, Graduate School of Engineering Science, Osaka University,
Toyonaka, Osaka 560-8531, Japan 2 Department of Earth and Space Science, Graduate Schoolof Science, Osaka University, Toyonaka, Osaka 560-0043, Japananisotropic diffuse scattering along [110] isdifferent from that along [001] although theintensities along both directions decrease
with increasing T. Since the T-dependenceof the dielectric constant along c-axis isalso different from that along c-plane, it isexpected that the anisotropic diffuse scattering has the relation with the relaxor-likebehavior.
[1] A. A. Bokov, and Z.-G. Ye, J. Mater. Sci.
41 (2006) 31.
[2] G. Burns, and F. H. Dacol, Phys. Rev. B
28 (1983) 2527.
[3] Y. Matsuo et al., Jpn. J. Appl. Phys. 47(2008) 8464.
[4] M. Matsuura et al., Phys. Rev. B 74
(2006) 144107.

l(r.l.u.)

In relaxor systems, temperature dependence of the dielectric permittivity showsa broad maximum and a frequencydependence. [1] Since the relaxors have ahigh dielectric constant around room temperature, they are industrially important.
To explain physical behaviors of relaxors,
Burns proposed the ideas that randomly
oriented, very local polar regions start toappear from high temperature. [2] This
“Polar Nano Region” (PNR) is said to be
the most important concept to understandthe origin of the relaxor properties.
As a new example of such relaxor systems,
we have studied the triangular lattice system LuFeMO4 (M=Cu, Mg, and Co). For
LuFe2O4, a ferroelectricity induced by acharge order has been observed. LuFeMO4,
in which M is randomly substituted at theFe site, shows the relaxor-like behavior in
the dielectric constant. [3] Relaxor-like dielectric property has hardly ever been reported in a triangular lattice system. In thisstudy, we use a neutron scattering technique to examine the origins of the relaxorlike behavior in LuFeCoO4.
At T=300 K, we have observed theanisotropic nuclear diffuse scattering
around the Bragg reﬂection. Figure 1
shows a contour plot of the intensity
distribution around the Q-point (1,1,0) for
the scattering plane (hhl). Here, we use thehexagonal unit cell. This diffuse scattering
is similar to the well-known butterﬂy
pattern reported in PbMg1/3Nb2/3O3(PMN), where the diffuse scattering intensity extends along the [110] and [1-10]
directions of the cubic symmetry. [4] However, the direction of the diffuse scatteringin LuFeCoO4 is not easy. Furthermore,
the T-dependence of the intensity of theh(r.l.u.)
Fig. 1. Fig. 1 Contour plot measured around the Qpoint (1,1,0) at 300 K for the scattering plane (hhl).

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
Report Number: 1060

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1-1-15
Crystal Structure Analysis of Ruddlesden-Popper Type Sr3Ti1.8Co0.2O7
Kazuki Omoto †, Hiroki Yamada †, Nuansaeng Sirikanda ‡, Tatsumi Ishihara ‡,Masatomo Yashima †† Department of Material Science and Engineering, Interdisciplinary Graduate School of
Science and Engineering, Tokyo Institute of Technology, Nagatsuta-cho 4259,
Midori-ku,Yokohama, Kanagawa 226-8502, Japan and ‡ Department of Applied Chemistry，Faculty of Engineering, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan.
Ruddlesden-Popper type oxide Sr3Ti2O7
series have been investigated due to theirhigh oxygen permeation rates. In particular, the doping of Co atoms into Sr3Ti2O7
was highly effective for increasing the oxygen permeation rate of Sr3Ti2O7 [1]. In
the present work, we have investigated the
crystal structure of Sr3Ti1.8Co0.2O7 withneutron powder diffractometry.
Sr3Ti1.8Co0.2O7 material was prepared bysolid-state reactions. Sr3Ti1.8Co0.2O7 was
prepared with stoichiometric mixtures of
the SrCO3, TiO2, CoO, which were mixed
with ethanol in an agate pot and calcined at1273 K for 6 h in air. The calcined powder
was then milled again. After a cold isostaticpressing at 160 kPa, the disk was sinteredin air at 1573-1873 K for 6 h. The phase purity of Sr3Ti1.8Co0.2O7 was conﬁrmed by
X-ray diffraction measurements.
We performed neutron powder diffraction experiments at 25.5 degrees C on
the Kinken powder diffractometer for highefﬁciency and high resolution measurements, HERMES, of Institute for Materials
Research, Tohoku University, installed at
the JRR-3M reactor in Japan Atomic Energy
Agency (JAEA), Tokai [2].
Neutrons with a wavelength of 1.8204
angstrom were obtained by the 331 reﬂection of the Ge monochromator and 12blank-sample-22 collimation.
Figure 1 shows the Rietveld patternof Sr3Ti1.8Co0.2O7 at 25.5 degrees C.
The reliability factors were Rwp=7.72%，
RB=5.10%，and RF=1.60%.
Lattice parameter were a=3.89345(2), b=3.8935(2),and c=20.329(1) angstrom.

[1] N. Sirikanda, H. Matsumoto, T. Ishihara, Solid State Ionics in press (2010).
[2] K. Ohoyama, T. Kanouchi, K. Nemoto,
M. Ohashi, T. Kajitani and Y. Yamaguchi,
Jpn. J. Appl. Phys. 37(1998) 3319.

Fig. 1. Neutron diffraction proﬁles at room temperature for Sr3Ti1.8Co0.2O7

Reference
Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
Report Number: 1075

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1-1-16

Crystal Structure of Exhaust Gas Catalyst Ceria-Zirconia Nanoparticles
CexZr1-xO2
Daisuke Sato, Masatomo Yashima , Takahiro Wakita
Department of Materials Science and Engineering, Interdisciplinary Graduate School of Scienceand Engineering, Tokyo Institute of Technology, Nagatsuta-cho 4259, Midori-Ku, Yokohama,
Kanagawa 226-8502, Japan;Daiichi Kigenso Kagaku Kogyo Co., Ltd., Hirabayashi-Minami
1-6-38, Suminoe-ku, Osaka 559-0025, Japan
Ceria-zirconia (CexZr1-xO2) catalysts arewidely used in the cleaning of exhaustgases from automobiles. The developmentof improved catalysts requires a better
understanding of crystal structure andoxygen-ion diffusion in ceria-zirconia materials. The crystal structures of CexZr1xO2 have extensively been investigatedby some techniques. For bulk Ce1-xZrxO2
solid solutions the structural disorder was
reported to be an important factor of
their high catalytic activity. [1] Nevertheless, the structural disorder in CexZr1xO2 nanoparticles remain poorly understood. The purpose of this work is to
study the structural disorder of Ce1xZrxO2 nanoparticles by the Rietveld analysis of neutron powder diffraction data.
Neutron powder diffraction measurementsof CexZr1-xO2 nanoparticles (0?x?1) were
performed in air with a 150-detector system, HERMES, installed at the JRR-3M
reactor in Japan Atomic Energy Agency,
Tokai, Japan. Neutron with wavelength
1.8204 angstrom was obtained by the 331
reﬂection of a Ge monochromator. Diffraction data were collected in air at 298 K.
The powder diffraction data were analyzed
by the Rietveld method with RIETANFP [2]. Unit-cell parameters of tetragonal
CexZr1-xO2 increased with x. The oxygen displacement from the regular 8c position of the cubic ﬂuorite-type structure
in tetragonal CexZr1-xO2 decreased continuously with x. The isotropic atomic displacement parameter of the oxygen atoms
U(O) in CexZr1-xO2 increased with an increase of CeO2 content x in 0.2?x?0.5, while
the U(O) decreased with x in 0.5?x?1.0.
Thus, the Ce0.5Zr0.5O2 composition has

the highest U(O) value in the CexZr1xO2 solid solutions (0.2?x?1.0), suggestinghigher bulk diffusivity of the oxygen ionsin Ce0.5Zr0.5O2 compared with those atother compositions. The greater U(O) in
Ce0.5Zr0.5O2 is a possible factor of its
higher catalytic activity.
References[1] Yashima & Wakita, Appl. Phys. Lett., 94(2009) 171902[2] F. Izumi and K. Momma, Solid State
Phenomena. 15-20 (2007) 130.

Fig. 1. (1) (2)

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
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1-1-17

Crystal structure analysis of the cubic perovskite-type La0.4Ba0.6CoO3-d
Yi-Ching Chen (A), Masatomo Yashima (A), Takashi Ohta (A), Kenji Ohoyama(B)(A) Department of Materials Science and Engineering, Interdisciplinary Graduate School of
Science and Engineering, Tokyo Institute of Technology, Nagatsuta-cho 4259-J2-61, Midori-ku,
Yokohama-shi, 226-8502, Japan; (B) Institute for Materials Research, Tohoku University, Aoba,
Sendai, 980-8577, JapanThe
lanthanum
bariumcobalite,
La0.4Ba0.6CoO3-x is one of mixed oxideionic and electronic conducting ceramics
and also a candidate of cathode material
in solid oxide fuel cells (SOFCs) [1]. Ourpresent study is to investigate the crystal structure and oxygen ions diffusion
path of the cubic Pm-3m perovskite-type
La0.4Ba0.6CoO3-x by in situ neutron powder diffraction measurements from 27 to1250 oC.
La0.4Ba0.6CoO3-x pellets were preparedby Mitsubishi Materials Co., Tokyo, Japan.
All the neutron powder diffraction dataof La0.4Ba0.6CoO3-x were collected in thetemperature range from 27 to 1250 oC andin 2 θ range from 7 °to 157 °in air by a furnace [2] and 150-detector system HERMES[3] with a neutron wavelength of 1.8265(1)angstrom.
Neutron diffraction proﬁles indicated that
La0.4Ba0.6CoO3-x has a cubic perovskitetype structure in the whole temperature
range. The diffraction data were analyzed
by a computer program RIETAN-FP [4]based on Rietveld analysis. The reﬁned
unit-cell parameters and atomic displacement parameters of La0.4Ba0.6CoO3-x increased with increasing temperature. The
reliability factors and goodness of ﬁt at
1010 oC (Figure) in the Rietveld analysis were Rwp = 5.14 %, RI = 8.77 %,RF= 4.95 % and S = 2.43. The unit-cellparameters were a = b = c = 4.0182(3)angstrom at this temperature. The oxygen atoms showed larger atomic displacement parameters perpendicular to the CoO bond with larger U22(O) =U33(O) =0.0073(1) nm?2 > U11(O) = 0.0042(1) nm?2.
This reveals that the oxygen diffusion pathof La0.4Ba0.6CoO3-x is similar with that forLa0.6Sr0.4CoO3-x [5].
[1] T. Ishihara, S. Fukui, H. Nishiguchi,
Y. Takita, Solid State Ionics, 2002, 152-153,
609-613.
[2] M. Yashima, J. Am. Ceram. Soc., 2002,
85, 2925-2930.
[3] K. Ohoyama, T. Kanouchi, K. Nemoto,
M. Ohashi, T. Kajitani, Y. Yamaguchi, Jpn.
J. Appl. Phys., Part 1, 1998, 37, 3319-3326.
[4] F. Izumi, K. Momma, Solid State Phenom, 2007, 130, 15-20.
[5] M. Yashima, T. Tsuji, J. App. Cryst.,
2007, 40, 1166-1168.

Fig. 1. Rietveld pattern for neutron diffraction dataof La0.4Ba0.6CoO3-x at 1010 oC

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
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JAEA-Review 2013-040

1-1-18Structure analysis of Imma perovskite-type oxynitride LaTiO2N
Mio Saito [a], Masatomo Yashima [a], Hiromi Nakano [b], Tsuyoshi Takata [c], Kiyonori
Ogisu [c], Kazunari Domen [c][a] Department of Materials Science and Engineering, Interdisciplinary Graduate School of
Science and Engineering, Tokyo Institute of Technology, Nagatsuta-cho 4259-J2-61, Midori-ku,
Yokohama-shi, 226-8502, Japan, [b] Cooperative Research Facility Center, Toyohashi Universityof Technology, Hibarigaoka 1-1, Tempaku, Toyohashi-shi, 441-8580, Japan, [c] Chemical System
Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo,113-8656, JapanLaTiO2N exhibits interesting photocatdielectric[3]alytic,[1] optical[1,2] andproperties. The purpose of this work is
to examine crystal structure of highly
crystalline LaTiO2N prepared by a ﬂux
method. We report here the ﬁrst exampleof Imma perovskite-type oxynitride.
A high-purity and highly-crystalline LaTiO2N sample with deep red colour was
prepared using a NaCl ﬂux. Neutron powder diffraction data of LaTiO2N were measured by the diffractometer HERMES witha 1.84885 angstrom neutron beam. Neuanalyzed bytron diffraction data were
Rietveld analysis. A computer program
RIETAN-FP was utilized for the Rietveld
analysis.
Rietveld reﬁnements of the neutron diffraction data of LaTiO2N at 2.56 oC were
performed on the basis of the perovskitetype structure with Imma space-groupsymmetry. Reliability factors and goodnessof ﬁt at 25.6 oC were Rwp = 5.08%, RI= 4.01%, RF = 2.49% and GOF = 1.6994.
parameters were a = 5.5730(2)Latticeangstrom, c=
angstrom, b = 7.8708(3)5.6072 (2) angstrom.
The crystal structure of LaTiO2N consistedof Ti(O,N)6 octahedra and La cations. The
tilt system of Imma LaTiO2N was a0b-b-.
The antiphase tilt angle was estimated to be
10.404(5) degree.

[References]
1 (a) A. Kasahara, K. Nukumizu, G. Hitoki, T. Takata, J. N. Kondo, M. Hara, H.
Kobayashi and K. Domen, J. Phys. Chem.
A, 2002, 106, 6750-6753; (b) A. Kasahara,
K. Nukumizu, T. Takata, J. N. Kondo, M.
Hara, H. Kobayashi and K. Domen, J. Phys.
Chem. B, 2003, 107, 791-797.
2 T. Moriga, K. Ikeuchi, R. Mashima, D.
Aoki and K.-I. Murai, J. Ceram. Soc. Jpn.,
2007, 115, 637-639.
3 F. Tessier and R. Marchand, J. Solid State
Chem., 2003, 171, 143-151.

Fig. 1. Rietveld patterns of neutron data of LaTiO2N

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
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JAEA-Review 2013-040

1-1-19Structure Analysis of Hydroxyapatite by Neutron Powder Diﬀraction
Yukihiko Yonehara(A), Masatomo Yashima(A), Hirotaka Fujimori(B)(A)Department of Materials Science and Engineering, Tokyo Institute of Technology,
Nagatsuta-cho 4259, Midori-ku,Yokohama, Kanagawa 226-8502, Japan (B)Graduate School of
Science and Engineering, Yamaguchi Univ, Tokiwadai 2-16-1, Ube,Yamaguchi 755-8611, Japan
Hydroxyapatite (Ca10(PO4)6(OH)2) is oneof the most interesting materials in current
technologies due to its wide possible applications as biomaterials and electrical devices. Its physical and chemical properties
relating to such uses strongly depend on
the crystal structure. In particular the stability of OH ion in the structure of hydroxyapatite has been suggested to be closely
related to decomposition and ionic conductivity of hydroxyapatite. The OH lattice sites have been reported to be the conduction path of hydroxyapatite and to play
an important role in the proton conduction. Thus, it is important to study the position of H atoms in the hydroxyapatite.
However, information of hydrogen is difﬁcult to be detected by the powder X-ray
diffraction (XRD) technique. Here, we report the structure analysis of hydroxyapatite, through a neutron powder diffraction
study.
A stoichiometric hydroxyapatite sample
with Ca/P=5/3 was prepared with a citric acid method. The powders were put
into vanadium holder and neutron powder
diffraction measurement was performed in
air with a 150 detector system, HERMES,
installed at the JRR-3M reactor in Japan
Atomic Energy Agency, Tokai, Japan. Neutron with wavelength 1.84491 angstrom
was obtained by the 331 reﬂection of a Ge
monochromator. Diffraction data were collected in air at 298.5 K. The experimental
data were analyzed by Rietveld method.
A computer program RIETAN-FP was utilized for the Rietveld analysis.
Rietveld analysis of hydroxyapatite at 298.5
K was carried out assuming the P21/c
space group. As shown in Fig. 1, the calculated intensities agreed well with theobserved ones. The reliability factors andgoodness of ﬁt were Rwp = 5.19 %, RI =1.16%, RF = 0.57% and S = 4.31. Lattice parameters were a = 9.4162(7) angstrom, b= 6.8789(2) angstrom, and c= 18.8685(12)angstrom. These values are consistent withthe literature.

Fig. 1. Neutron powder diffraction patterns of hydroxyapatite at 298.5 K.

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
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JAEA-Review 2013-040

1-1-20

Crystal Structure, Diﬀusion Path and Oxygen Permeability of a Pr2NiO4-Based
Mixed Conductor (Pr0.9La0.1)2(Ni0.74Cu0.21Ga0.05)O4+delta
Masatomo Yashima*, Sirikanda Nuansaeng** and Tatsumi Ishihara***Department of Materials Science and Engineering, Interdisciplinary Graduate School of
Science and Engineering, Tokyo Institute of Technology, Nagatsuta-cho 4259, Midori-Ku,
Yokohama, Kanagawa 226-8502, Japan, **Department of Applied Chemistry, ˆ{B}Faculty ofEngineering, Kyushu University, Motooka 744, Nishi-Ku, Fukuoka, Fukuoka 819-0395, Japan
We have investigated in situ the crystal
structure, oxygen diffusion path, oxygen
permeation rate and electrical conductivity of a doped praseodymium nickel
oxide, Pr2NiO4-based mixed conductor,(Pr0.9La0.1)2(Ni0.74Cu0.21Ga0.05)O4+delta(PLNCG) in air between 27 and 1015.6 oC.
The PLNCG has a tetragonal I4/mmm
K2NiF4-type structure which consistsof(Pr0.9La0.1)(Ni0.74Cu0.21Ga0.05)O3
perovskite unit and (Pr0.9La0.1)O rock-salt
one in the whole temperature range. Bothexperimental and theoretical electron
density maps indicated two-dimensional
networks of (Ni0.74Cu0.21Ga0.05)-O covalent bonds in PLNCG. Highest Occupancy
Molecular Orbitals (HOMO) in PLNCG
demonstrate that the electron-hole conduction occurs via Ni and Cu atoms inthe (Ni0.74Cu0.21Ga0.05)-O layer. Bulk
oxygen permeation rate was large (137
micro mol cm-2 min-1 at 1000 oC) and its
activation energy was low (51 kJ mol-1
at 950 oC). Rietveld, maximum-entropy
method (MEM) and MEM-based pattern
ﬁtting analyses of neutron and synchrotron
diffraction data indicate a large anisotropic
thermal motions of the apical O2 oxygen at
the 4e site (0, 0, z; z is nearly equaled to 0.2)
in the (Pr0.9La0.1)(Ni0.74Cu0.21Ga0.05)O3
perovskite unit. Neutron and synchrotron
diffraction data and theoretical structural
optimization show the interstitial oxygen(O3) atom at (x, 0, z) (x is nearly equaled
to 0.6 and z is nearly equaled to 0.2). The
nuclear density analysis indicates that thebulk oxide-ion diffusion occurs throughthe interstitial O3 and anisotropic apicalO2 sites, which is responsible for thehigh oxygen permeation rate. The nuclear

density at the bottleneck on the oxygen
diffusion path increases with temperature
as well as the oxygen permeation rate.
The activation energy from the nuclear
density at the bottleneck decreases withtemperature, which is consistent with thedecrease of the activation energy fromoxygen permeation rate. Extremely low
activation energy (12 kJ mol-1 at 900 oC)
from the nuclear density at the bottleneck
indicates possible higher bulk oxygen
permeation rates in quality single crystals
and epitaxial thin ﬁlms.

Fig. 1.

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
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1-1-21

Study on the electric ﬁeld-induced lattice deformation in nanocrystalline CuO
M. Hagihala1, X. G. Zheng1, T. J. Sato2, N. Matsuura3
1 Department of Physics, Saga University; 2 ISSP, Univ. of Tokyo; 3 Osaka University.
Recently we found that giant thermal
expansion was realized in magnetic
nanocrystals of CuO(1). CuO, the cupricoxide, is a unique transition metal monooxide that was previously clariﬁed by us
to show strong spin-charge-lattice coupling and ferroelectric properties below
its magnetic (antiferromagnetic) transition(2). We had demonstrated that the spincharge-coupling induced giant dielectric
constant and ferroelectric-like spontaneouspolarization. Recently, this strong chargespin-lattice coupling receives intense
attention and CuO is grouped to the newcategory of multiferroic materials (3). As
for the reason of the reversed thermal expansion, we suspect that the spontaneouspolarization in the dielectric phase causes
displacement of the ions on the lattice andtherefore the expanding of the lattice. In anumber of so-called multiferroic materials
electric polarization and magnetic order
are coupled, providing a possible direct
link between magnetism and NTE formagnetic nanoparticles with low crystal
symmetry. With the small number of atoms
in the nanoparticles the displacement ofions may substantially inﬂuence the latticeequilibrium and hence increase the unit
cell volume.
Therefore a neutron diffraction experiment
was designed to explore possible electricmagnetic correlation in the nanocrystalline
CuO. For this study a thin disc-like pellet(30 mm in diamter and 3 mm thick) was
made using nanoparticles of CuO. Gold
electric contacts were formed on the twosides of the pellet by cold sputtering. The
pellet was then set into a specially designed
crystat for the neutron diffraction measurement. The experiment was carried using
beamline 4G at JRR-3. In order to investigate the effect of electric ﬁeld on the latticea high voltage of 1.4 kV was applied to thepellet sample during the experiment.
A small electric-ﬁeld-induced latticechange was observed as shown in Fig. 1.
As compared with the zero ﬁeld data, thediffraction peak (111) shifted to slightly
higher angles, implying lattice contraction
under an electric ﬁeld.
However, as is seen from this plot, the resolution of the present equipment for neutron
diffraction is not sufﬁcient. Further studies
may be performed using the synchrotron xray facilities.
1. X. G. Zheng et al., Nature Nanotechnology 3, 724 (2008).
2. X.G. Zheng et al., J. Phys. Soc. Jpn. 70,
1054 -1063 (2001); Phys. Rev. Lett. 85, 5170
(2000); J. Appl. Phys. 92, 2703-2708 (2002);
Yamada, H. et al., Phy. Rev. B 69, 104104(2004).
3. Kimura, T. et al, Nature Materials 7, 291294 (2008).

Fig. 1. Fig. 1 Filed-induced change of the (111) peakfor nanocrystalline CuO.

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
Report Number: 1089

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JAEA-Review 2013-040

1-1-22A structure study of the double perovskite oxide Ba2NdSn0.3Sb0.7O5.85
Hiroki Kato*, Masatomo Yashima*, Paul J. Saines**, Brendan J. Kennedy***Department of Materials Science and Engineering, Interdisciplinary Graduate School of
Science and Engineering, Tokyo Institute of Technology, Nagatsuta-cho 4259, Midori-Ku,
Yokohama, Kanagawa 226-8502, Japan; **School of Chemistry, The University of Sydney,
Sydney, NSW 2006, Australia
Metal oxides with the double perovskitetype structure continue to attract attention due to the diverse range of properties including colossal magneto-resistance,ionic conduction, ferro- and piezoelectricity and ferromagnetism. Such properties
are known to be strongly inﬂuenced by
the crystal structure of the oxides. Therefore the structural studies of such perovskites are important in understanding
these physical properties. The purposeof this work is to investigate the crystal structure of double perovskite oxide
Ba2NdSn0.3Sb0.7O5.85.
The Ba2NdSn0.3Sb0.7O5.85 pellets were
put in a home-made furnace [1]. The neutron powder diffraction measurements of
Ba2NdSn0.3Sb0.7O5.85 were performed in
air from 297 to 1676 K with a 150- detector system, HERMES [2], installed at the
JRR-3M reactor in Japan Atomic Energy
Agency, Tokai, Japan. Neutron with wavelength 1.81386 angstrom was obtained by
the 331 reﬂection of a Ge monochromator. The experimental data were analyzed
by Rietveld method. A computer program
RIETAN-FP [3] was utilized for the Rietveld analysis.
Rietveld analysis of neutron powder
diffraction data of Ba2NdSn0.3Sb0.7O5.85
at 297 K was carried out assuming theI2/m space group. Figure 1 shows the Rietveld pattern of Ba2NdSn0.3Sb0.7O5.85 at
297 K. The reliability factors and goodnessof ﬁt were Rwp = 5.00%, RI = 4.64%, RF =2.35% and S =1.49. The unit-cell parametersof Ba2NdSn0.3Sb0.7O5.85 increased withan increase of temperature.

[1] M. Yashima, J. Am. Ceram. Soc. 85(2002) 2925.
[2] K. Ohoyama et al., Jpn. J. Appl. Phys. 37(1998) 3319.
[3] F. Izumi and K. Momma, Solid State
Phenomena 15-20 (2007) 130.

Fig. 1. Rietveld pattern of Ba2NdSn0.3Sb0.7O5.85 at
297 K.

References
Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
Report Number: 1096

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JAEA-Review 2013-040

1-1-23

Crystal structure analysis of the perovskite-type silver niobate AgNbO3
Shota Matsuyama*, Masatomo Yashima*, Hiroki Taniguchi**, Tomoyasu Taniyama**,and Mitsuru Itoh*** Department of Materials Science and Engineering, Interdisciplinary Graduate School of
Science and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku,
Yokohama, 226-8502, Japan; **Materials and Structures Laboratory, Tokyo Institute ofTechnology, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
Silver niobate- (AgNbO3-) based compounds are candidates for high frequency/microwave materials. AgNbO3
has a perovskite-type structure. AgNbO3
is a lead-free material. The purpose of thiswork is to investigate the crystal structureof the perovskite-type AgNbO3 from room
temperature to high temperatures.
Neutron diffraction data of AgNbO3 werecollected in air using the HERMES [1], adiffractometer with a 150 multi-detector
system, at 296, 442 and 587 K. The HERMES is installed at the JRR-3M reactor
in Japan Atomic Energy Agency, Tokai,
Japan. Neutrons with wavelength 1.82646
angstrom were obtained by the 331 reﬂection of a Ge monochromator. A furnacewith MoSi2 heaters [2] was placed on thesample table, and used for neutron diffraction measurements at high temperatures.
The experimental data were analyzed
assuming the orthorhombic (space groupPbcm) perovskite-type structure by Rietveld method with a computer program
RIETAN-FP [3]. Figure 1 shows the Rietveld ﬁtting result for the neutron diffraction data of AgNbO3 measured at 442 K(Rwp = 13.97%, a =5.5466(4) angstrom,b =5.5927(4) angstrom, c =15.680(11)angstrom). The lattice parameters of
AgNbO3 increased with increasing temperature.

Fig. 1. Rietveld ﬁtting result for the neutron diffraction data of AgNbO3 at 442 K.

References[1] K. Ohoyama et al., Jpn. J. Appl. Phys. 37(1998) 3319.
[2] M. Yashima, J. Am. Ceram. Soc. 85(2002) 2925.
[3] F. Izumi and K. Momma, Solid State
Phenom. 130 (2007) 15.
Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
Report Number: 1097

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JAEA-Review 2013-040

1-1-24

Neutron diﬀraction study of SnO2-CeO2-SbOx system
K. Nomura (A), H. Kageyama (A), C. Minagoshi (B), Y. Kawabata (B), T. Maekawa (B),and K. Kanda (B)(A) National Institute of Advanced Industrial Science and Technology (AIST), (B)New Cosmos
Electric Co., Ltd.
Recently, SnO2-based materials have been
investigated as transparent conductive oxides, oxidation catalysts, and the sensing materials of semiconductor gas sensors [1]. Of these, as the sensing materials of sensors, SnO2-MOx (M = Al,Ce, etc.) systems have been mainly used.
However, the detailed crystal structuresof these systems are not clear yet. So
far, we measured the neutron diffraction
data of SnO2-MOx (M = Al, Ce) [2,3]and (SnO2)100(CeO2)a(SbOx)b (a = 1.03.0, b = 1.0-3.0)[4] systems, and investigated the crystal structure and the nuclear density distributions. In this study,
we have investigated the crystal structure
and the nuclear density distributions of(SnO2)100(CeO2)a(SbOx)b (a = 0.6-0.8, b =0.6-0.8) system.
Neutron diffraction measurements of highpurity (SnO2)100(CeO2)a(SbOx)b samples
were performed with HERMES installedat JRR-3M in JAEA (Tokai) [5]. Neutron
wavelength was 1.8204(5)A. Diffraction
data were collected in the 2 theta range
from 20 to 157 deg in the step interval of
0.1 deg. The diffraction data obtained wereanalyzed by the combination technique of
Rietveld analysis using a computer program RIETAN-FP [6] and a maximumentropy method (MEM)-based pattern ﬁtting. MEM calculation was carried out using a computer program PRIMA [7].
The neutron diffraction patterns of(SnO2)100(CeO2)a(SbOx)b (a = 0.6-0.8,
b = 0.6-0.8) samples showed larger peakwidths compared to that of pure SnO2.
All the reﬂection peaks of these samples
were indexed by a tetragonal symmetry(P42/mnm, No.136). The assumed structure model was as follows: Sn, Ce, andSb atoms occupy 2a sites (0, 0, 0) and O

atoms occupy 4f sites (x, y, 0) (x = y ˜ 0.306)[1] with isotropic atomic displacement
parameters. The lattice parameters andunit cell volume increased with increasing Ce and Sb contents, suggesting the
introduction of larger Ce4+(0.97A) andSb3+(0.76A) ions [8] into Sn4+ (0.69A)
sites. Figure. 1 shows the equicontour surfaces (0.05fm/Aˆ3) of scattering amplitudeof (SnO2)100(CeO2)0.8(SbOx)0.8. Not only
2a (Sn, Ce, Sb) sites but also 4f (O) sites
showed nonspherical equicontour surfaces
with larger distributions (compared topure SnO2), suggesting the disturbed
atomic arrangements on the 2a and 4f sites
by introducing Ce and Sb atoms into Snsites.
References[1] M. Batzill and U. Diebold, Progress in
Surface Science, 79, 47 (2005).
[2] T. Maekawa, C. Minagoshi, S. Nakamura, K. Nomura, and H. Kageyama,
Chemical Sensors, 24, 19 (2008).
[3] K. Nomura, H. Kageyama, T. Maekawa,
C. Minagoshi, S. Nakamura, and T. Ito,
ISSP-NSL activity report, NO.483.
[4] K. Nomura, H. Kageyama, T. Maekawa,
C. Minagoshi, H. Miyazaki, and Y. Kawabata, ISSP-NSL activity report NO.865.
[5] K. Ohoyama, T. Kanouchi, K. Nemoto,
M. Ohashi, T. Kajitani, and Y. Yamaguchi,
Jpn. J. Appl. Phys., 37, 3319 (1998).
[6] F. Izumi and K. Momma, Solid State
Phenom., 130, 15 (2007).
[7] F. Izumi and R.A. Dilanian, in: Recent
Research Developments in Physics, vol.3,
Transworld Research Network, Trivandrum, 2002, p.699.
[8] R.D. Shannon, Acta Cryst., B51, 751(1976).

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
Report Number: 1098

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JAEA-Review 2013-040

Fig. 1. Equicontour surfaces (0.05fm/Aˆ3) of scattering amplitude of (SnO2)100(CeO2)0.8(SbOx)0.8

1-1-24- 41 -

JAEA-Review 2013-040

1-1-25Eﬀect of Transition-Metal Substitution on Crystal Structure and Ferroelectric
Property of Bi4Ti3O12-Based Oxide
Yasushi Idemoto, Naoto Kitamura and Takashi Iiyama
Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo
University of ScienceAs a ferroelectric for non-volatile Ferroelectric Random Access Memory, Bi4xLnxTi3O12-based materials (Ln: rare earth
element) have drawn much attention because of the high remanent polarization,
low coercive ﬁeld and good fatigue characteristics. Recently, we have focused onthese ferroelectric oxides, and have investigated the crystal structures by using neutron diffractions. As a result, it was demonstrated that TiO6 octahedra in the crystals distorted considerably and the spontaneous polarization calculated from theatomic positions corresponded to the remanent polarization measured by using a ferroelectric test system. In addition, we also
reported that ferroelectric properties of theBi4-xLnxTi3O12 were much improved bya partial substitution of a transition metal,
such as Mo, for the Ti site. However, an inﬂuence of the transition metal doping on
the crystal structure is still obscure.
From such background, we
measuredneutrondiffraction
patterns
of(Bi,La)4(Ti,Mo)3O12
and(Bi,Nd)4(Ti,Mo)3O12, and then analyzed
their crystal structures by the Rietveld
method.
We synthesized (Bi,La)4(Ti,Mo)3O12 and(Bi,Nd)4(Ti,Mo)3O12 by means of a conventional solid-state reaction. Preliminary
phase identiﬁcations were carried out by
powder X-ray diffraction measurements.
The metal compositions and valences were
evaluated by ICP and XAFS(KEK PF), respectively. We also evaluated the ferroelectric properties by P-E hysteresis loops anddielectric measurements. Neutron diffraction patterns of the products were measured at room temperature in air by HERMES installed at JRR-3.

X-ray diffraction patterns conﬁrmedthat all the Mo-substituted samples had asingle phase of the layered perovskite-type
structure, which was the same structure as
the (Bi,Ln)4Ti3O12. Their analytical metalcompositions were essentially equal to thenominal ones, and Mo at the Ti site was
supposed to be hexavalent based on the results of XANES measurements. From theP-E hysteresis loops, it was demonstrated
that Mo substitution enhanced the remanent polarization regardless of the rareearth element. It was also found that aphase-transition temperature from the ferroelectric state to the paraelectric one (i.e.,Curie temperature) became lower by thepartial substitution. Such a change in the
ferroelectric properties suggests that the
crystal structures were varied signiﬁcantly
by substituting Mo for Ti.
In order to clarify how the Mo
substitution affected the crystal structure,
we performed the Rietveld analysis using the neutron diffraction patterns. As for
all the prepared (Bi,Nd)4(Ti,Mo)3O12, thestructural parameters were well reﬁned byassuming a single phase of the layered
peroveskite-type structure (S. G.; B11n).
From the parameters, we calculated distortions (quadratic elongations and bond angle variances) in the crystals, and then clariﬁed that the distortions around the (Ti,Mo)
sites increased slightly by the partial substitution of Mo. Based on the results, it canbe considered that a higher distortion in the
Mo-substituted samples is one of the reasons for the improvement of the ferroelectric properties.

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
Report Number: 1105

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1-1-26

Acoustic phonon softening in tetragonal BiVO4
Izumi Tomeno, A Naomi Sato, A Yoshinosuke Sato, A Kunihiko Oka,B YorihikoTsunodaC
A Akita Univ., B AIST, C Waseda Univ.
creasing temperature toward Tc . This tendency is the normal behavior in an anharmonic lattice.
An elastic central peak emerges at[0.7ξ, ξ, 0] in addition to the soft TA mode.
The width of the central peak is comparable to the instrumental resolution. We
found out that the central-peak intensity
for q = [ξ, ξ, 0] is signiﬁcantly higher thanthat for q = [0.7ξ, ξ, 0]. The elastic diffuse
scattering distributed along [1,1̄,0] suggeststhat the narrow central-peak at [0.7ξ, ξ, 0]
has no direct connection the softening of
the TA mode. A possible interpretationis that static or quasi-static defects appear
along [ξ, ξ̄, 0] with decreasing temperature
toward Tc .
1 J.D. Bierlein and A. W. Sleight, Solid
State Commun. 16, 69 (1975).
2 H. Tokumoto and H. Unoki, Phys.
Rev.B27, 3748 (1981).
4
Vmin at 527 K
Vmin at 593 K
3

E (meV)

Bismuth vanadate BiVO4 undergoes asecond-order ferroelastic phase transition
at Tc =525 K.1 The high-temperature paraelastic phase has a body-centered tetragonal
scheelite structure with a centrosymmetric
6 ).
space group I41 /a (C4h
We studied the TA phonon propagatingon the (001) plane polarized on this plane
in BiVO4 above Tc =525 K. The energiesof the TA phonon dispersion curve along[0.7ξ, ξ, 0] are slightly lower than thosealong [ξ, ξ, 0], indicating that the acoustic
symmetry direction deviates from the highsymmetry [ξ, ξ, 0] direction. The deviationis related to the fact that the oxygen siteat the tetrahedral VO4 has the lowest site
symmetry C1 above Tc .
The present study shows the considerable softening of the TA phonon modealong [0.7ξ, ξ, 0] in the range ξ < 0.2.
Figure 1 shows the temperature dependence of the TA phonon mode along
the [0.7ξ, ξ, 0] direction. The TA phonon
branch along [0.7ξ, ξ, 0] is almost temperature independent between 673 and 873
K. Below 673 K, the TA phonon curve inthe range 0 < ξ < 0.2 shifts downward with decreasing temperature. In Fig.1
the dashed lines around ξ = 0 represent the extrapolations of the sound velocities determined by Brillouin scatteringexperiments.2 The sound velocity vmin ≈8.2 × 10 m/s at Tc indicates an extreme
ﬂat TA dispersion in the vicinity of thezone center. The extrapolated interceptof the observed TA branch at 538 K withthe horizontal axis gives a upper boundof the wave vector q = [0.013, 0.019, 0] forthe extreme ﬂat dispersion region. The
TA phonon branch along [0.7ξ, ξ, 0] at 538
K should have a signiﬁcant upward curvature at the small q range.
On theother hand, the TA phonon mode along[ξ, 0.176ξ, 0] exhibits a hardening with de-

673 K
538 K
773 K

2

593 K
1

0
0.00

0.05

0.10

0.15

0.20

[0.7ξ, ξ, 0]

Fig. 1. Temperature dependence of TA mode along[0.7ξ, ξ, 0]

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
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JAEA-Review 2013-040

1-1-27

Dependence of Crystal Structure and Protonic Conduction on Compositions in
Gallate-Based High Temperature Protonic Conductors with Layered Structures
Yasushi Idemoto and Naoto Kitamurra
Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo
University of Science
Solid oxide fuel cell, which is socalled SOFC, can be regard as a new andclean energy source, and has been widely
investigated in recent decades. As an electrolyte of the SOFC, LaBaGaO4-based hightemperature protonic conductors with alayered structure have drawn much attention, because of the high conductivity, highionic transport number and high chemical
stability against ambient acid gases, like
CO2. In the proton conductors, a partial
substitution of an aliovalent cation for thehost cation introduces some defects, suchas an oxygen vacancy and an interstitial
proton. Diffusions of these defects throughthe crystals dominate the proton-uptake
and conduction processes at elevated temperature. Thus, in order to understand theprotonic conduction mechanism, it is important to investigate the crystal structures,
especially the sites and the occupancies ofthe oxygen and proton. At this moment,
however, there is not sufﬁcient knowledge
on the crystal structures of the LaBaGaO4
system.
In this study, neutron diffraction patternsof La1-xBa1+xGa1-yMgyO4-d with a layered structure were measured with HERMES installed at JRR-3, and then the crystal
structures were analyzed based on the Rietveld method by using the Rietan-FP program.
La1-xBa1+xGa1-yMgyO4-d(x=0˜0.1,
y=0˜0.05) were synthesized by a conventional solid-state reaction using each metaloxide or carbonate as a starting material.
Phase identiﬁcations of the samples werecarried out with powder X-ray diffraction measurements. We also investigatedthe electrical conductivities at the temperature range from 573 to 1173 K under var-ious PO2 and PH2O, and then discussed
the protonic-conduction properties at theelevated temperature. Neutron diffraction
measurements of the samples were performed in order to investigate the crystal
structure in detail.
From X-ray diffraction patterns, it was indicated that La1-xBa1+xGa1-yMgyO4-d synthesized in this work had a single phase ofa layered structure regardless of the composition, and a change of the lattice constants reﬂected a difference of the ionicradii of the constituent cations. Conductivity measurements revealed that LaBaGaO4
began to exhibit protonic conduction under moisturized conditions at high temperature by substituting Ba and Mg for La andGa, respectively.
Rietveld analyses using neutron diffractions indicated that all the La1-xBa1+xGa1yMgyO4-d had an orthorhombic layered
structure (S. G.; P212121) in air. From thereﬁned structure parameters, it was foundthat atomic displacement parameters of
the oxygens were larger than those of theother constituent elements. This suggeststhat oxygen vibrations play an importantrole for the protonic conduction, because
the proton can be considered to diffuse via
a hydrogen bond in the case of the hightemperature protonic conductors. It wasalso clariﬁed that the oxygen amounts of
La1-xBa1+xGa1-yMgyO4-d which were estimated from the reﬁned occupancies, werelarger than those predicted from the electroneutrality condition; that is, 4-d=4-x/2y/2. This may be due to a progress of a hydration reaction, which can be described as
below with the Kr ger-Vink notation;(1/2)Vo..+(1/2)H2O(g) + (1/2)Oox -> <OHo.

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
Report Number: 1126

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JAEA-Review 2013-040

where Vo.. , Oox and OHo. represent
oxygen vacancies, O2- at the O2- sites andan interstitial proton coordinating an oxideion, respectively.



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JAEA-Review 2013-040

1-1-28

Direct Observation of Adsorbed Layer on Metal Surface Using Neutron
Reﬂectometry
Tomoko Hirayama A , Takashi Torii A , Takashi Matsuoka A , Kazuko InoueB , Masahiro
HinoC , Dai YamazakiD
A Doshisha University, B Waseda University, C Kyoto University, D JAEA
Lubricants are generally used to achieve
low friction on sliding surfaces in manykinds of machine components. It is reported that additives in lubricant form
some adsorbed layers on sliding surface.
Though several researches on relationshipbetween the adsorbed layers and frictional
properties have been conducted, there are
no reports on nano structure at solid-liquidinterface through direct observation in tribology ﬁeld.
In this paper, nano structures at solidliquid interfaces were analyzed by neutron
reﬂectometry. The neutron can penetrate
into almost all metals, and the reﬂectometry is currently used to analyze the verticalstructure, such as density and thickness at
the target surface or interface. The instruments we used were neutron reﬂectometers MINE and SUIREN in Japan
Atomic Energy Agency (JAEA).
We prepared three kinds of metal surfaces,
iron, copper and aluminium, on ultra-ﬂat
silicon blocks by physical deposition. We
analyzed each target surface using neutron
reﬂectometry in air, in base oil (poli-alphaoleﬁn) and in base oil with an additive(acetic acid). For the case that the metal surfaces were soaked in base oil with the additive, the interferential fringes in reﬂectivity proﬁles became narrower than the bothcases that the surfaces were in air and inbase oil only. It means that the adsorbed
layers of additive formed on metal surfaces. Fitting operation along Parratt s theory showed that the thickness of adsorbed
layer was about 2 or 3 nm. Friction coefﬁcients of the metal surfaces considerably
decreased when the additive was added in
the base oil. We conclude that nano structure of interface between metal surface andlubricant considerably affects friction prop-

erty under boundary lubricated condition
and then neutron reﬂectometry is a very
helpful method for tribology work.

Fig. 1. Reﬂectivity proﬁles from copper surface

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
Report Number: 1164

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JAEA-Review 2013-040

1-1-29Neutron Powder Diﬀraction Study of Lithium Battery Electrode Materials with
Tunnel Structure
N. Kijima(A), J. Akimoto(A), K. Kataoka(A,B)(A) National Institute of Advanced Industrial Science and Technology (AIST), (B) University ofTsukuba
α-MnO2 has a hollandite type structure
comprising double chains of MnO6 octahedra forming (2 × 2) tunnels. At present,
only α-MnO2 is known to have a tunnel structure without any large stabilizing
cations in its tunnel cavity, whereas theother porous manganese oxides, e.g., romanechite (2 × 3) and todorokite (3 × 3),
contain some large stabilizing cations intheir tunnels. The open-tunnel structure of
α-MnO2 makes it attractive for an application as an electrode material for lithiumion secondary batteries [1-3]. To clarify the
structural properties of a Li inserted αMnO2 specimen, neutron diffraction investigations have been made in this work.
An α-MnO2 specimen was prepared by
the precipitation method using ozone oxidation [1,2]. A Li inserted α-MnO2 specimen was obtained by soaking the parent
α-MnO2 powder in a mixed solution of
LiOH and LiNO3 [2].
Neutron powder diffraction data werecollected at room temperature on the HERMES powder diffractometer installed at
the JRR-3M research reactor of the Japan
Atomic Energy Agency. The specimens
were contained in a cylindrical vanadiumcell with an inner diameter of 10 mm. Incident neutrons with a ﬁxed wavelengthof 1.8204(5) angstroms were obtained by avertically focusing (331) Ge monochromator. The powder diffraction data were measured over a 2 theta range of 7-157 degrees
with a step interval of 0.1.
The diffraction data were analyzed by
the Rietveld method with RIETAN-2000,
and the nuclear scattering density distribution of specimens were visualized by the
Maximum-entropy-method based Pattern
Fitting (MPF).
Figure 1 depicts the Rietveld reﬁnement

patterns and the nuclear scattering density
distribution images of Li inserted α-MnO2
specimen. These images clearly show the Li
and O atoms in the tunnel space.
The Li inserted α-MnO2 specimen
showed a good charge-discharge property
as the cathode material, although the parent α-MnO2 specimen showed a poor discharge property [2]. These facts suggestthat the presence of stabilizing atoms or
molecules within the (2 × 2) tunnel of ahollandite-type structure is necessary to facilitate the diffusion of Li ions during cycling.
References[1] N. Kijima et al., J. Solid State Chem. 177(2004) 1258.
[2] N. Kijima et al., J. Solid State Chem. 178(2005) 2741.
[3] N. Kijima et al., Solid State Ionics 180(2009) 616.

Fig. 1. Neutron powder diffraction patterns and nuclear scattering density distribution images of Li inserted α-MnO2 specimen.

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
Report Number: 1188

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JAEA-Review 2013-040

1-1-30Fractal geometry of porous silica studied by SANS experiment
Hiroyuki Mayama
Hokkaido University
Very recently, it has been understood thatfractal is a promising approach to design
functional materials because fractal geometries theoretically poses inﬁnity length andsurface area, and zero net volume. In relation, fractal geometry of porous silica
samples, which were prepared under designed conditions, were investigated by
SANS experiments. We have already created Menger sponge-like fractal bodies(fractal porous silica) and established theexperimental strategy how fractal dimension D can be modiﬁed. We found that
the Menger sponge-like fractal geometries
were created in porous silica with D = 2.52.7 in the scale range between 50 nm and 5
um in which connected network structuresof pore exist. In this experimental strategy,
wax particles of alkylketene dimer (AKD)with ﬂower-like surface structure (particle
diameter ca. 10 um, thickness of a petal ca.
100 nm) were utilized as template particles and tetramethyl orthosilicate (TMOS)
was used to ﬁll the space between the particles and polymerized by a sol-gel synthesis of TMOS. After calcination of the reaction products, fractal porous silica samples were obtained. However, the distribution of the porous network structure, i.e.,
scale range of fractal geometry, was limited in the scale range of 50 nm ˜ 5 um. To
develop the network structure in smallerscale range less than 50 nm, we utilizedpolymer chains such as polyethylene glycol(PEG) and calf thymus DNA as other typeof templates to make smaller pores. We systematically prepared fractal porous samples at different concentrations of PEG andDNA, and also different molecular weightof PEG. As a result, we found an experimental strategy to develop the pore network structure in smaller scale (less than
50 nm). Fig. 1 is a typical example how
SANS proﬁle depends on sample prepa-

ration. The proﬁles in the range of 0.01 ˜
0.1 1/A are almost same, but, the proﬁles
in lower Q range less than 0.01 1/A reﬂect the condition of templates. With an increase of the concentration of PEG20000, it
was observed that the proﬁle in lower Q
range goes up. We thus found a possibility that the proﬁles may obey a power lawof scattering intensity I (Q) ˜ Iˆ(-D) under asuitable condition. Along this strategy, we
would like to create fractal porous silica inwhich D is maintained in several nanometer to several micrometer.

Fig. 1. SANS proﬁles of fractal porous silica using
wax particles, calf thymus DNA and PEG20000 as
templates

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
Report Number: 1189

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JAEA-Review 2013-040

1-1-31Analysis of Hydrogen Molecules Chemisorbed on Cu Ions Conﬁned in Solid
Nanospace
T. Ohkubo(A), K. Takahara(A), A. Itadani(A), O. Yamamuro(B), and Y. Kuroda(A)(A) Fac. Sci., Okayama Univ., (B) ISSP-NSL, Univ. Tokyo
We have reported speciﬁc adsorption
properties of gas molecules on copperion-exchanged MFI-type zeolite (CuMFI).
Speciﬁcally, monovalent Cu ions exchanged in MFI zeolite can stronglyinteract with an adsorbed molecule evenat room temperature. In our previous
report, we showed the possibility fromthe IR measurements which indicated theexistence of the speciﬁc adsorption sites
on CuMFI treated at 873 K [1]. However, it
is quite difﬁcult to investigate the adsorption phenomena with ordinary methods
and, herein, we performed the inelastic
neutron scattering (INS) measurements for
CuMFI adsorbed by hydrogen and tried
to elucidate the adsorption sites to interact
strongly with hydrogen.
INS experiments were carried out onhydrogen-chemisorbed CuMFI by using
AGNES spectrometer. At ﬁrst, we measured the spectra of original CuMFI which
was evacuated at 873 K in a quartz tube andthen transferred into an aluminum holder
in a helium-exchanged globe box. Hydrogen molecules were directly installed into
the holder at 0.1 MPa and 77 K throughthe center stick. To obtain the INS spectrumof chemisorbed species, we cooled down
to 8 K and evacuated physically adsorbed
molecules and the molecules in the bulk
phase.
Fig. 1 shows the difference INS spectrumof adsorbed hydrogen molecules at 8 K.
We could observe two kinds of INS bands
at 1.08 and 1.72 cm-1, respectively. Eckert
et al. assigned the INS band of hydrogencoordinated tungsten complex observed
at 0.95 cm-1 as the rotational tunnelingof side-on-type coordinated hydrogen [2].
Therefore, these two bands strongly indicate the existence of two kinds of strongor chemical adsorption sites on the CuMFI

surface. However, our results did not agreewith the band positions observed at 0.80
and 1.37 cm-1 reported by Georgiev et al.
by using CuMFI [3]. These differences may
be due to the differences of surface composition such as Si/Al ratio or the variation of local structure around a monovalentCu ion. The present results revealed thatthe two kinds of adsorption sites can act
as speciﬁc sites for hydrogen whose interaction strength is similar to that observed
for side-on-type coordinated hydrogen of acomplex.

Fig. 1. Difference INS spectrum of adsorbed hydrogen on CuMFI.

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
Report Number: 1197

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JAEA-Review 2013-040

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JAEA-Review 2013-040

1-2-1
Neutron Single-Crystal Diﬀraction Studies on HoB2 C2 under High-Pressure
H. Yamauchi, T. Osakabe, E. Matsuoka† and H. Onodera††

Quantum Beam Science Directorate, JAEA, Tokai, Ibaraki 319-1195, Japan
Department of Physics, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan

Figure 1 shows the magnetic P - T phase diagram of HoB2 C2 up to 10 GPa. The phaseboundaries are estimated from the pressure
dependence of the TN , TQ and the magnetic
structure at 1.4 K. In the ﬁgure, T1 0 0 and
T0 1 1/2 are the growth temperatures of magnetic Bragg peaks of (1, 0, 0) and (0, 1, 1/2),
respectively. Since the k1 component in the
AFM structure below TQ , which is observed inmost of the RB2 C2 system including GdB2 C2of L = 0, reﬂects the fundamental magnetic
interactions in HoB2 C2 , the appearance of the
k2 component strongly indicates the existenceof the competitive AFQ structure. Thus, we
can assume that T0 1 1/2 is closely related to
TQ . The TN is enhanced monotonically with
原子炉：JRR-3

装置：TAS-1(2G)

12Paramagnetic

8

T1 0 0, heating
T1 0 0, cooling

6Sine-wave

4

T0 1 1/2

2

AFM+AFQ0

HoB2C2TN, heatingTN, cooling10)K( erutarepmeTThe tetragonal HoB2 C2 shows two successive transitions. Firstly, the sinusoidally
modulated antiferromagnetic (AFM) ordercharacterized by kL = (1+δ, δ, δ  ) (δ = 0.11,δ  = 0.04) develops at TN = 5.9 K with decreasing temperature, and then the antiferroquadrupolar (AFQ) order occurs at lower
temperature of TQ = 4.5 K1) . This fact indicates that the AFQ interactions are comparable with the AFM interactions in HoB2 C2 .
Below TQ , the unmodulated AFM structurecompetitively coexists with the AFQ orderedstructure and shows the 90◦ alignment along
the c-axis characterized by the wave vectors of
k1 = (1, 0, 0) and k2 = (0, 1, 1/2). This competitive condition of interactions in HoB2 C2
arouses our interests in pressure-induced phenomena. We therefore performed the ﬁrst
high pressure experiments to investigate pressure eﬀects on HoB2 C2 using neutron singlecrystal diﬀraction technique. We succeed
in all experiments using an opposed pair oflarge anvils, named “ hybrid-anvil cell ”2) anda McWhan-type pressure cell. The neutron
diﬀraction measurements were carried out on
TAS-1 in the JRR-3 reactor hall.

T1 0 0 (McWhan)
T1 0 1/2 (McWhan)

PI 1

0

2

4

6

PI 2

8

10

12

14

Pressure (GPa)Figure 1: Magnetic pressure-temperature phase diagram of HoB2 C2 up to 10 GPa.

increasing pressure up to 10 GPa. The TQ is
also enhanced up to ∼ 2.1 GPa by pressure.
But above 2.1 GPa, no magnetic (0, 1, 1/2)
peak could be observed at 1.4 K. Therefore,
we suppose that the TQ is suppressed gradually above 2.1 GPa, and the AFQ order disappears in the range of 3 GPa < P < 5 GPa.
Above 4.9 GPa at 1.4 K, we observed characteristic appearance of magnetic peaks whichwere completely diﬀerent from those in thesine-wave phase and AFM+AFQ coexistent
phase. At around 5 GPa, magnetic peaks
characterized not only by kL (or (1+δ, δ, 0))
but also by k1 were observed. On the other
hand, above 7.9 GPa, magnetic peaks for kL
disappeared, and intense magnetic reﬂections
only for k1 were observed. Consequently, we
conclude that new magnetic phases induced
by pressure exist as shown by PI 1 and PI 2 inFig. 1. Magnetic structure models in the newphases are now under consideration.
References
1) K. Ohoyama et al.: J. Phys. Soc. Jpn. 69 (2000)
3401.
2) T. Osakabe et al.: Rev. High Pressure Sci. Technol. 20 (2010) 72 [in Japanese].

分野：中性子散乱（磁性）- 53 -

JAEA-Review 2013-040

1-2-2
Inﬂuence of Al Substitution on Magnetic Correlation of the Two-Dimensional
Triangular Lattice Antiferromagnet CuCrO2
R. Kajimoto, M. Matsuda1 , K. Uto2 and T. Okuda2
J-PARC Center, JAEA, Tokai, Ibaraki 319-1195
Quantum Beam Science Directorate, JAEA, Tokai, Ibaraki 319-1195
2
Department of Nano-Structures and Advanced Materials, Kagoshima University, Kagoshima 890-0065
1

原子炉：JRR-3

CuCr1-xAlxO2

400

qq4M

qq3M

600

006N

qq2M

800

(a)

qq5M

qq0M

x=0
x=0.05x=0.10x=0.15

qq1M

1000

003N

Intensity (arb. units)

1200

200

Al

20

30

40

50

60

70

Scattering Angle (deg)CuCr1-xAlxO2: x=0.10
Intensity (counts/180sec)

Figure 1(a) shows x dependence of thediﬀraction proﬁle measured at 6 K on TAS2. The magnetic Bragg reﬂections are drastically suppressed by the Al substitution, andthey almost disappear at x = 0.15. In
stead, there remains a broad skewed proﬁle.
The skewed proﬁle should reﬂect the development of a 2D correlation, which is similar to (Cu,Ag)CrO2 .2) In (Cu,Ag)CrO2 , the2D magnetic correlation was dynamical anddevelop well above TN . This was proved by
the diﬀerence between temperature (T ) dependence of a magnetic peak intensity measured on TAS-2 with a coarse energy resolution (ΔE = 1.2 meV) and that measured on
LTAS with a high energy resolution (ΔE =0.2 meV).2) In order to examine this point
on CuCr1−x Alx O2 , we performed similar mea-

surements. Figure 1(b) compares T dependences of a magnetic peak measured on TAS2 and LTAS. The diﬀerence between the twodata is quite small. These facts indicate thatthe two-dimensionality in the magnetic correlation is enhanced by the Al substitution
similar to the Ag substitution, but its energy
scale is smaller than that in (Cu,Ag)CrO2 .

LATS: Ef=3.5meV

1000

2400

(b)
2000

TAS-2: Ei=14.7meV
800

1600

600
1200
400
800
200
0

10

20

30

40

50

60

Temperature (K)70Intensity (counts/180sec)

CuCrO2 has triangular lattice layers ofmagnetic Cr3+ ions separated from eachother by non-magnetic layers of Cu+ ions,which makes this compound a quasi twodimensional (2D) triangular lattice antiferromagnet with S = 3/2. The Cr spins forma proper screw structure below TN = 26 K,
whose wave vector is (q, q, 0) with q ≈ 1/3.1)
Recently, it was found that substitution of theinter-layer Cu+ ions with Ag+ ions enhances
the two-dimensionality in the magnetic correlation, and may induce some unusual magnetic excitations.2) In contrast, substitutionof Cr3+ ions with non-magnetic Al3+ ions directly should aﬀects the intra-layer magnetic
interactions. In the present study, we performed neutron diﬀraction study on powder
samples of CuCr1−x Alx O2 to investigate theAl substitution eﬀect on the magnetic correlation. The measurements were performed using TAS-2 and LTAS with neutron energies of
14.7 meV and 3.5 meV, respectively.

80

Figure 1: (a) Neutron powder diﬀraction proﬁles of
CuCr1−x Alx O2 at T = 6 K on TAS-2. Indices witha subscript N and a subscript M indicate nuclear andmagnetic reﬂections, respectively. (b) Temperaturedependences of the peak intensity of the qq0M peak inthe x = 0.10 sample measured on TAS-2 and LTAS.

References
1) H. Kadowaki et al.: “J. Phys.: Condens. Matter”,
2, 4485 (1990); M. Soda et al.: “J. Phys. Soc.
Jpn.”, 78, 124703 (2009).
2) T. Okuda et al.: “J. Phys. Soc. Jpn.”, 78, 013604(2009).

装置：TAS-2(T2-4) · LTAS(C2-1)- 54 -

分野：中性子散乱（磁性）JAEA-Review 2013-040

1-2-3
Pressure-Temperature Phase Diagram of Filled Skutterudite PrFe4 P12
T. Osakabe, H. Yamauchi, K. Kuwahara1 , K. Iwasa2 , Y. Aoki3 , H. Sato3 and M. Kohgi3
1

Quantum Beam Science Directorate, JAEA, Tokai, Ibaraki 319-1195
Graduate School of Science and Engineering, Ibaraki Univ., Mito, Ibaraki 310-8512
2
Department of Physics, Tohoku Univ., Sendai, Miyagi 980-8578
3
Department of Physics, Tokyo Metropolitan Univ., Hachioji, Tokyo 192-0397

Filled skutterudite compound PrFe4 P12shows a Γ1 -type electronic mulitipolar order
below TA = 6.5 K at ambient pressure 1) . The
propagation vector of this ordered phase (Aphase, hereafter) is q = (1, 0, 0), which is
closely related with the nesting property of
the Fermi surface 2) . Applied pressure suppresses the A-phase and induces an insulatingphase above 2.4 GPa at low temperature 3) .

duced when the Γ23 state is located in the low(1)lying CF state in addition to the Γ1 -Γ4 withd ∼ 1 quasi-quartet state. This CF structure is agree with the theoretical calculationby considering the strong p-f hybridization effect and the point charge eﬀect 5) . The highlydegenerated CF state in the low energy regionis supposed to be responsible for the heavy
electron state in this compound.

In the previous neutron diﬀraction experiments below 4.3 GPa, we directly observed
the pressure-induced antiferro magnetic ordered phase (M-phase, hereafter) and foundthat the M-phase corresponds to the insulating phase. The propagation vector of theM-phase is identical with that of the Aphase. The magnetic moment at 1.5 K is approximately 2.0 μB , which is consistent withthe dipole moment in the crystal-ﬁeld (CF)(1)
ground state of the Γ1 -Γ4 with d ∼ 1 quasiquartet 4, 5) .
Recently, we have performed neutron
diﬀraction experiments up to 10.5 GPa using the TAS-1 spectrometer in JRR-3 to investigate the stability of the M-phase against
applied pressure. The experimental results
are summarized in ﬁg. 1 as a pressuretemperature phase diagram together with thedata in ref. 3) . As clearly shown in ﬁg. 1,
the M-phase is highly stabilized by appliedpressure especially above 4 GPa. The N éeltemperature at 10.3 GPa reaches to about 50
K, which is the highest magnetic transition
temperature in the Pr compound reported sofar. The mechanism of the stabilization of
the M-phase by appliend pressure is an open
question. On the other hand, the magnetic
moment above 4 GPa also increases gradually and reaches about 2.3 μB at 10.3 GPa.
The dipole moment at 10.3 GPa is well repro原子炉：JRR-3

装置：TAS-1(2G)Figure 1: Pressure-temperature phase diagram of
PrFe4 P12 .

References
1) Y. Aoki, T. Namiki, T. D. Matsuda, K. Abe, H.
Sugawara, and H. Sato :,“Phys. Rev. B”, 65, pp.
064446-1-7 (2002).
2) H. Harima, K. Takegahara, S. H. Curnoe, K. Ueda
: “J. Phys. Soc. Jpn.”, 71 Suppl. pp. 70-73 (2002).
3) H. Hidaka, I. Ando, H. Kotegawa, T. Kobayashi,
H. Harima, M. Kobayashi, H. Sugawara and H.
Sato :“Phys. Rev. B”, 71, pp. 073102-1-4 (2005).
4) A. Kiss and Y. Kuramoto :“J. Phys. Soc. Jpn.”,
74, pp. 2530-2537 (2005).
5) Y. Kuramoto, A. Kiss, J. Otsuki and H. Kusunose:“J. Phys. Soc. Jpn.”, 75 Suppl. pp. 209-214 (2006).

分野：中性子散乱（磁性）- 55 -

JAEA-Review 2013-040

1-2-4

Spin Waves in MnPS. Yano(1) , M. Nishi(2), M. Matsuura(3), K. Hirota(3) and J. Akimitsu(1)(1)Department of Physics and Mathematics, Aoyama-Gakuin Univ., 5-10-1 Fuchinobe,
Sagamihara(2) Institute for Solid State Physics, The Univ. of Tokyo 106-1 Shirakata, Tokai
319-1106(3)Department of Earth and Space Sceince, Graduate School of Science Osaka
University 1-1 Machikaneyama-cho,Toyonaka-shi,Osaka
Manganese phosphide MnP is a ferromagnetic intermetallic compound below TC =291K, and it transforms into a proper screw
state at T* = 47K.
The crystal structure is a slightly distorted
NiAs structure with the lattice parametersof a = 5.916 , b = 5.260 , c = 3.173
at room temperature. In the ferromagnetic
state, the easy-axis of the magnetization isthe c-axis. In the proper screw state, thespin rotates in the b-c plane with a propagation vector δ = 0.117a* along the a-axis.
One of our interests of MnP is the mechanism of transition from ferromagnetism
to helimagnetism which had not been explained by theoretical viewpoint. In order
to elucidate the mechanism, the information of spin wave in the whole Brillouinzone is crucially important.
The ferromagnetic spin-waves along thethree principal axes had been measured by
Todate et al[1]. They reported that the dispersion relation along the a-axis exhibits
anomalous wave vector and temperaturedependence, and also the quadratic q dependence was observed both along the band c-axes. In the proper screw state, spinwaves along the a- and b-axes had beenmeasured by Tajima et al[2]. They reported
the anomalous jump around T* along thea-axis which may be related to 3 δ.
In order to obtain the spin wave dispersion relations, we performed the neutron
inelastic scattering experiments at tripleaxis spectrometer PONTA (5G), JRR-3M reactor in JAERI (Tokai).
The single crystal of MnP, whose size
is 9mm φ× 40mm, was grown by the
Bridgman method.
The spin wave dispersions have been mearsured along the a-axis at 12 K and 50K, as

shown in Fig1. We could observe the spinwave dispersions along the a-axis, however, anomalous jump around T* which
Tajima et al reported was not found. It is
probably broadened dispersion due to itinerant magnetism.
In order to obtain the spin waves in thewhole Brillouin zone, further measurements of spin waves at higher energy (˜100meV) and lower energy (0 ˜ 2 meV) are
now in progress.

References[1] Y Todate et al.: Jou Phys Soc Jpn. 56 36(1987).
[2] K Tajima et al.: Jou Mag Mag Mat. 15-18
373-374 (1980).

Fig. 1. Spin wave relations along the a-axis

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
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JAEA-Review 2013-040

1-2-5

Antiferromagnetic ﬂuctuations in Fe(Se1−x Tex )0.92 (x = 0.75, 1)
S. Iikubo1 , M. Fujita2 , S. Niitaka3 , and H. Takagi3
1 Kyushu Institute of Technology, Kitakyushu, Fukuoka 808-0196, Japan

2 Institute for Materials Research, Tohoku University, Sendai, Miyagi 980-8577, Japan

3 RIKEN (The Institute of Physical and Chemical Research), Wako, Saitama 351-0198, Japanfor Te. We would like to note that the reciprocal lattice point | Q| ≈ 1.2 Å−1 is close
to the wave vectors Q = (0.5,0.5,0) (| Q| =1.17 Å−1 ) and Q = (0.5,0.5,0.5) (| Q| = 1.28
Å−1 ), which match with the 2D nesting
vector between the cylinder-like electron
and hole Fermi surfaces like FeAs system.
We speculate that the peak shift is relatedwith the appearance of itinerant characterof Fe magnetic moment which could be introduced by Se doping in the parent material FeTe0.92 . Our results show that substituting Se for Te may cause the system
to possess possible magnetic ﬂuctuations
with the 2D nesting vector Q = (0.5,0.5).
[1]W. Bao et al. Phys. Rev. Lett. 102 (2009)
247001.
500300(b) Fe(Se0.25Te0.75)0.92(a) FeTe0.92
400

250

2meV (89 K)

300
6meV (89 K)
200

100

Intensity (counts/8kmon.)Intensity (counts/4kmon.)Since the discovery of superconductivity in the FeAs systems, intensive studies on related superconductors including
iron group have been reported.
Although the related system shows the AFordering in the parent materials, recent
neutron diffraction measurements reported
that the ordered magnetic structure ofFe(Se1− x Tex )y is quite different from thatof other FeAs materials[1]. Therefore, thedynamical magnetic properties of the parent material FeTe0.92 and superconductor
Fe(Se0.25 Te0.75 )0.92 have been investigatedby inelastic neutron scattering.
Figure 1 (a) shows constant energy scanswith ω = 2 (89 K), 6 (89 K and 65 K) and8 meV (65 K) for FeTe0.92 , which shows
the AF ordering and a structural transition
from a high-temperature tetragonal phase
to a low-temperature monoclinic phase at∼ 70 K . We were able to observe the magnetic ﬂuctuations as a broad peak around
0.9 Å−1 . The scattering intensities become
weak as energy increases, especially below
TN . The peak centers are almost constantas the function of ω, which is consistent
with what has been reported for other FeAs
based materials.
Next, we will focus on the peak center forFe(Se0.25 Te0.75 )0.92 , which shows an appearance of bulk superconductivity below Tc ≈8 K. The energy evolution of the magnetic
excitation spectra at 3.5 K is shown in Fig.
1 (b). For low energies (ω ≤ 4 meV), themagnetic excitations are located at | Q| ≈0.9 Å−1 , which is close to the one for pure
FeTe0.92 . However, as ω increases, the peak
centers increase substantially up to | Q| ≈1.2 Å−1 at ω ≈10 meV. The measurements
reported here show conclusively that a signiﬁcant evolution occurs in the magnetic
excitation spectra when Se is substituted

200

8 meV

150

6 meV

4 meV

100

3 meV

50
6, 8meV (65 K)

0

10 meV

0.4

0.8
1.2
Q (Å-1)

T = 3.5 K
1.6

0

0.4

0.8

1.2

1.6

Q (Å-1)

Fig. 1.
(a) Inelastic scattering intensity for
FeTe0.92 .
(b) Inelastic scattering intensity for
Fe(Se0.25 Te0.75 )0.92 at 3.5 K.

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
Report Number: 1014

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JAEA-Review 2013-040

1-2-6

Magnetic structure in FeTe0.92
S. Iikubo1 , M. Fujita2 , S. Niitaka3 , and H. Takagi3
1 Kyushu Institute of Technology, Kitakyushu, Fukuoka 808-0196, Japan

2 Institute for Materials Research, Tohoku University, Sendai, Miyagi 980-8577, Japan

3 RIKEN (The Institute of Physical and Chemical Research), Wako, Saitama 351-0198, Japansystem show quite different magnetic
orderings from each other, the superconducting materials have the surprisingcommon character of the proximity to an
AF ﬂuctuation with a 2D Q = (0.5,0.5)[2].
This suggests that the mechanism of superconductivity in two systems may sharesome common features and especially that
the AF correlation with 2D Q = (0.5,0.5)
may play an important role in the mechanism of superconductivity in Fe-based
superconductors.
[1] A. Subedi, L. Zhang, D. J. Singh, andM. H. Du, Phys. Rev. B 78 (2008) 134514.
[2] S. Iikubo, M. Fujita, S. Niitaka, and H.
Takagi, J. Phys. Soc. Jpn. 78 (2009) 103704.

Intensity (counts/104)

2.0(a) FeTe0.92, T =160 K

1.5
1.0
0.5
0.0

1.4
1.2
Intensity (counts/104)

The discovery of Fe-based superconductor has led to intensive studies on
related superconductors including irongroup. They possess a FeX (X=As, Se,Te)layer in their structure and their non-doped
counterparts commonly exhibit an antiferromagnetic (AF) ordering with an adjacentstructural phase transition from tetragonal to orthorhombic structure. A precise
understanding of the magnetic properties
among the related compounds would provide a useful guideline for understanding
the superconductivity.
FeTe0.92 shows the AF ordering at ∼ 70
K with a structural transition from a hightemperature tetragonal phase to a lowtemperature monoclinic phase. Figure 1 (a)displays observed, calculated, and difference neutron diffraction patterns at 160 K.
All the reﬂections of FeTe0.92 at 160 K could
be indexed in the P4/nmm symmetry andstructure parameters were successfully reﬁned from the powder diffraction. Inset
of Fig, 1 (a) shows Fermi surface of FeTefrom non-spin-polarized calculation withcrystal parameters determined by our Rietveld analysis. This result is consistent toprevious study[1] proposed that the Fermi
surface structure of FeSe and FeTe, whichcauses AF magnetic ordering characterized
by the 2D nesting vector Q = (0.5,0.5) between the cylinder-like electron and holeFermi surfaces.
At T = 8 K, we observed several superlattice reﬂection shown in Fig. 1(b). Thisobservation corresponds to the AF ordering with the ordering vector Q = (0.5,0,0.5),
indicating that the magnetic unit cell is ∼2a × a × 2c, where a and c are the lattice parameters of the chemical unit cell.
Although the end compounds inFe(Se1− x Tex )y and other FeAs based(b) FeTe0.92, T =8 K

1.0
0.8
0.6
0.4
0.2
0.0

0

20

40

60

80

100

120

140

160

2q / °

Fig. 1. The result of the Rietvelt analysis at (a) 160 K
and (b) 8 K. inset: Fermi surface of FeTe from nonspin-polarized calculation.

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
Report Number: 1015

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JAEA-Review 2013-040

1-2-7

Component dependence of magnetic moment in MnRh alloy
Matsuoka Y., Takasaki A.
Nara Women’s University
The magnetic states and the transformation
temperatures of MnRh have large component dependence, and shows large hysteresis.
In the case of MnRh alloy with
60at.%Mn, the transformation fromhard-ferromagnetic-like state with CsCl
structure to soft-ferromagnetic-like statewith CuAu-I structure begins around 250
K and ﬁnish around 70 K, and inverse
transformation begin around 250 K andﬁnish over 400 K.
MnRh alloy with 50at.%Mn shows transformation from antiferromagnetic state toparamagnetic or antiferromagnetic state.
But detailed analysis of magnetic structure
has not been performed except a few theoretical calculations.
We performed neutron powder diffraction measurements of Mn-Rh alloy with
60at.%Mn at 300 K and 15 K. The magnetic structure models of this alloy were estimated by the Rietveld analysis of neutron
powder diffraction spectra.
As a result, MnRh alloy with 60at.%Mn
is estimated to have ferromagnetic or antiferromagnetic structure at 300 K, and antiferromagnetic structure at 15 K. The directions of magnetic moments of Mn and Rh
in CuAu-I phase are [110]. The moments of
Mn and Rh are estimated to be 3.3 μ B and1.0 μ B, respectively.

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
Report Number: 1021

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1-2-8

Origin of Ferroelectricity induced by Proper-screw Magnetic Structure in
Multiferroic Material CuCrO2
Minoru Soda1, Kenta Kimura2, Tsuyoshi Kimura2, Masato Matsuura1 and Kazuma
Hirota1
1 Department of Earth and Space Science, Graduate School of Science, Osaka University,
Toyonaka, Osaka 560-0043, 2 Division of Material Physics, Graduate School of Engineering
Science, Osaka University, Toyonaka, Osaka 560-8531
Ferroelectricity induced by a noncollinear
spin arrangement in TbMnO3 has been
investigated experimentally and theoretically.[1] The microscopic origin of sucha ferroelectricity can be successfully explained by the spin-current and the inverse
Dzyaloshinskii-Moriya
mechanisms.[2]Very recently, however, spiral-magnetisminduced multiferroics where the abovementioned mechanisms are not applicablehave been found in some triangular lattice
antiferromagnets (TLAs). Among them,
CuFeO2 and CuCrO2 with a delafossite
structure show ferroelectricity induced byproper-screw spiral magnetic structures.[3]A microscopic theory which relates thevariation in the metal-ligand (d-p) hybridization with the spin-orbit coupling to
the electric polarization has been applied
by Arima to explain the proper-screwspiral-induced ferroelectricity.[4] In thepresent work, the spin-polarized-neutron
studies have been carried out on themultiferroic material CuCrO2 to clarify
the origin of the ferroelectricity in themultiferroic TLA.
CuCrO2 undergoes an antiferromagnetictransition at TN˜24 K. The ferroelectricity
with P//q has been observed at temeprature T below TN˜24 K. A powder neutron diffraction study reported by H. Kadowaki et al. has indicated that CuCrO2 hasan out-of-plane 120 deg. magnetic structure below TN.[5] However, our neutron
results demonstrate that an incommensurate proper-screw magnetic structure of
CuCrO2 induces an electric polarization.
Furthermore, we have carried out spinpolarized-neutron studies with applying
the electric ﬁeld to clarify the relationshipbetween the spin helicity and the electric
polarization. By measuring the spin helicity of the magnetic reﬂection not only parallel to P but also not parallel to P, as shownin Fig. 1, we have clariﬁed that the electric
polarization of CuCrO2 can be explained
not by a conventional spin-current model
but by a theoretical prediction proposed
by Arima. This d-p hybridization modelmeans that the spin helicity of the properscrew magnetic structure as well as theoxygen location contribute to the ferroelectricity of CuCrO2. We have also found thatthe spin helicities of CuCrO2 can be reversed by the reversal of an electric ﬁeld in
the multiferroic phase.
[1] T. Kimura et al., Nature 426 (2003) 55.
[2] H. Katsura, N. Nagaosa and A. V. Balatsky, Phys. Rev. Lett. 95 (2005) 057205.
[3] T. Kimura, J. C. Lashley and A. P.
Ramirez, Phys. Rev. B 73 (2006) 220401(R)[4] T. Arima, J. Phys. Soc. Jpn. 76 (2007)
073702.
[5] H. Kadowaki, H. Kikuchi and Y. Ajiro,
J.Phys.: Condens.Matter 2 4485 (1990)

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
Report Number: 1027

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JAEA-Review 2013-040

(a)

60º
0º

[110]

-60º
[110] electrode(b)

0 deg.
60 deg.
-60 deg.

off(I -I )/(I +I )0.2

on off

on

0.1

0

-0.1

-0.2
-200 -100

0

100

200

300

400

E(kV/m)Fig. 1. Fig. 1(a) Relationship between the directionof E and Q-points. (b) E-dependence of the ratio of
the spin helicity deﬁned as (Ion-Ioff)/(Ion+Ioff) at
Q-points of 0, 60. and -60 deg.

1-2-8

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JAEA-Review 2013-040

1-2-9

Spiral-plane Flop and Rearrangement of Magnetic Domain in Multiferroic Material
CuCrO2
Minoru Soda1, Kenta Kimura2, Tsuyoshi Kimura2, and Kazuma Hirota1
1 Department of Earth and Space Science, Graduate School of Science, Osaka University,
Toyonaka, Osaka 560-0043, 2 Division of Material Physics, Graduate School of Engineering
Science, Osaka University, Toyonaka, Osaka 560-8531
Recently, a ferroelectricity induced by anoncollinear spin arrangement has been
extensively investigated both experimentally and theoretically. Materials exhibiting such a ferroelectricity are known
for “multiferroics,” in which a cycloidal
magnetic ordering and a proper-screw
magnetic ordering have been reported.
In the cycloidal magnetic ordering typesuch as TbMnO3, the microscopic originof the ferroelectricity can be explainedby a spin-current model or the inverse
Dzyaloshinskii-Moriya (DM) mechanism.
As to the proper-screw magnetic ordering
type such as CuCrO2, on the other hand,
Arima proposed an idea that a d-p hybridization due to the spin-orbit coupling
induces the electric polarization P for sucha noncollinear magnetic ordering in a lowsymmetry crystal.[1]The compound chosen in this study is oneof the multiferroic TLAs, CuCrO2, whose
Cr3+ ions (S=3/2) form a triangular lattice. In CuCrO2, ferroelectricity with P//q
has been observed at temeprature T below TN˜24 K, where an incommensurate
proper-screw spiral magnetic order. As inother spiral-magnetism-induced multiferroics such as TbMnO3, a ﬁrst-order magnetoelectric (ME) phase transition occurs
in CuCrO2, where the direction of P is
ﬂopped from the [110] to the [1-10] direction by applying H˜5.3 T along [1-10].[2] In
this study, we use a neutron scattering technique to examine the origins of the ME effects observed in CuCrO2.
We revealed that the application of magnetic ﬁelds causes a transition from theproper-screw magnetic ordered state into a
cycloidal one, as shown in Fig. 1. The transition is associated with a ferroelectric po-larization ﬂop, i.e., gigantic magnetoelectric effects. Such a transition between two
ferroelectric phases with different-types ofspiral structures has never been observed
in known multiferroics. In addition, we
found that the ferroelectric character ofthe cycloidal phase in magnetic ﬁelds cannot be explained by the above well established mechanisms. This means that thecycloidal-induced ferroelectricity of CuCrO2 is distinct from that in known spiralmagnetism-induced multiferroics. Furthermore, we have found that the distribution of the magnetic domains is strongly
affected by a magnetic-ﬁeld-cooling procedure below a characteristic temperature
T*˜16 K, which contributes to the ferroelectric polarization. The direct experimental
evidence that the ferroelectric polarizationis controlled with the magnetic domains
has never been reported.
[1] T. Arima, J. Phys. Soc. Jpn. 76, 073702(2007).
[2] K. Kimura et al., Phys. Rev. Lett. 103,
107201 (2009).

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
Report Number: 1028

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JAEA-Review 2013-040

Integrated Intensity(a.u.)

(a)

1.5

1
T=1.6 K
H//[1-10]0.5m[001]
m[1-10]
0
0

2

4

6

H(T)
proper-screw
cycloidal

(b)

8

[110]

H

[110]

H~5.3 T: spiral plane: P direction: propagation vector

Fig. 1. Fig. 1(a) H-dependence of the integrated intensity of magnetic reﬂections. (b) Spiral-plane ﬂop
from proper-screw magnetic structure to cycloidal
one with increasing H.

1-2-9- 63 -

JAEA-Review 2013-040

1-2-10

Neutron diﬀraction study on antiferromagnetism of alkali-metal clusters in sodalite
T. Nakano1 , A. Hanazawa1 , M. Matsuura2 , K. Hirota2 , and Y. Nozue1
1 Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan

2 Department of Earth and Space Science, Osaka University, Toyonaka, Osaka 560-0043, Japanthe corner cluster are aligned with antiparallel. We are, however, not sure about theeasy axis. We evaluated the magnetic form
factor from the obtained magnetic and nuclear Bragg peaks. Recently, Nakamura etal. have performed ab initio calculations
and derived maximally localized Wannierorbitals which correspond to the s-like electron conﬁned in the β-cage. We calculated the form factor of their Wannier orbital and compared with our experimental
results. The agreement between them wasfairy good indicating that we succeeded for
detecting the magnetic diffraction from thes-like cluster orbital of nanoclusters.
References[1] V. I. Srdanov et al., PRL 80 (1998) 2449.
[2] K. Nakamura et al., PRB 80 (2009) 174420.

    
















   





Ordered magnetic states have beenfound in alkali-metal clusters generated
in regularly arrayed nano-cages of zeolite
crystals. These magnetisms are fascinating because no magnetic element is contained. The magnetic moments arise froms-electrons conﬁned in the clusters, andthe ordered magnetic states are realized bytheir mutual interaction. Sodalite is one of
the aluminosilicate zeolites, where β-cageswith the inside diameter of  7 Å are arrayed in a bcc structure. Na34+ and K34+
clusters can be incorporated in β-cages. It
is known that these clusters show antiferromagnetism below respective Néel temperatures TN = 48 and  70 K [1]. We performed neutron powder diffraction study
with temperature varying between 4 and300 K by utilizing 5G-PONTA installed at
the JRR-3 Reactor of JAEA.
Figure 1 shows the 001 Bragg peak of Naclusters in sodalite measured at 4 K and 56
K. Although this Bragg peak is forbiddenfrom the crystal structure, the peak clearly
appears below the TN of about 50 K. Therefore, this peak is assigned to a magnetic
Bragg peak. The temperature dependenceof the integrated intensity of this peak waswell explained by phenomenological equation of an order parameter in a three dimensional Heisenberg model. We succeeded in observing also the 111 magnetic
Bragg peak at 4 K. The width of these Bragg
peaks are almost same as that given by the
resolution of the diffract meter. Hence, theantiferromagnetism of alkali-metal clusters
in sodalite can be regarded as a long-rangeorder (LRO). This is the ﬁrst direct observation of magnetic LRO by neutron diffraction in s-electron systems as far as weknow. The magnetic structure is determined as a simple one where the electron
spin of the body center cluster and that of





















Fig. 1. 001 Bragg peak of Na clusters in sodalite
measured by neutron powder diffraction at 4 K and
56 K

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
Report Number: 1084

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JAEA-Review 2013-040

1-2-11Non-magnetic-ion substitution in geometrically frustrated systems
M2(OD)3X[M=Co,Fe,Ni,Mn; X=Cl,Br]
X. G. Zheng, M. Hagihala, M. Fujihala
Department of Physics, Saga University
Geometrically frustrated magnetic materials show novel magnetic properties because of their lattice geometry. The latticegeometries responsible for frustration are
generally triangular lattice, kagome lattice,and pyrochlore lattice. Of particular recent
interest are the rare-earth pyrochlore compound materials, in which the magnetic
ions form networks of corner-shared tetrahedrons and the frustration of spin?spin interactions engenders spin ice states, unconventional spin glass states, and exotic spin
liquid states.
In recent years, we identiﬁed unconventional magnetic transitions in a transition metal hydroxyhalogenide seriesof deformed pyrochlore compounds
M2(OH)3X, where M represents a delectron transition metal magnetic ion
such as Cu+2, Ni+2, Co+2, Fe+2, andMnˆ+2ˆ, and X represents halogen ionsof Cl-1, Br-1, or I-1. Much of these metalhydroxyhalogenides were found originallyin natural minerals. This material category
presents a complete series for spins S=1/2
to S=5/2. In particular, clinoatacamite,
Cu2(OH)3Cl, showed unconventional
magnetic transitions at TN1 = 18.1 K witha very small entropy release, TN2 = 6.4 K
and TN3 = 6.2 K, with co-existing orderand spin ﬂuctuation. The nature of the TN1= 18.1 K phase remains largely unknown
and attracts much interest. Furthermore,
it is the ﬁrst example of the S = 1/2
Heisenberg quantum spin on a pyrochlore
lattice and the parent compound for thesubstituted perfect kagome lattice ofherbertsmithite ZnCu3Cl2(OH)6, which
exhibits spin liquid behavior.
The pyrochlore compounds M2(OH)3X canbe viewed as alternatively stacked layersof As kagome lattice planes and triangular lattice planes consisted by the magnetic
ions. As is demonstrated in herbertsmithite
ZnCu3Cl2(OH)6, substitution of the magnetic ions on the triangular lattice planes by
nbonmagnetic Zn etc. can artiﬁcially produce a new kagome lattice for the magnetic ions. We have thus tried such nonmagnetic substitution in the Co2Cl(OH)3
system. We observed by magnetic susceptibility measurements that partial substitution of magnetic Co by nonmagnetic Zn
drastically reduced the magnetic transition
temperature. With a substitution ratio near
25% in Co3ZnCl2(OH)6 no sharp transition
was seen from the magnetization data.
Therefore, we performed neutron powder
diffraction experiments using samples of(Co1-xZnx)2Cl(OH)3 with x ranging from0 to 0.4. The experiments were performed,
respectively, with a wavelength of 1.8264
A using a Kinken powder diffractometer,
HERMES, of the Institute for Materials Research (IMR), Tohoku University, installedat the JRR-3M reactor at the Japan Atomic
Energy Research Institute (JAERI), Tokai.
The collected neutron data were reﬁned using the program Fullprof suite based on
Rietveld reﬁnement. We found that selective substitution of the Co ions on thetriangular lattice planes was realized inthe (Co1-xZnx)2Cl(OH)3. For x near 0.25,
a kagome lattice of S=3/2 Co was realized. No magnetic transition was seen until the experimentally reachable 1.5 K, suggesting the enhanced frustration and possible spin liquid state in kagome lattice
Co3ZnCl2(OH)6.
Data analysis is still in progress and the detailed results will appear in a submitted paper to a physics journal.

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
Report Number: 1087

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JAEA-Review 2013-040

1-2-12
Low temperature magnetism and spin ﬂuctuation in atacamite-type Ni2(OD)3Cl
M. Hagihala1, M. Fujihala1, X. G. Zheng1, Y. Oohara2
1 Department of Physics, Saga University; 2 ISSP, Univ. of Tokyo
A long-range order in magnets must reportedly be fully frozen to become static.
Nevertheless, we recently obsered an exotic dynamic antiferromagnetic state inatacamite-type Ni2(OH)3Cl with a muSR
study although magnetic susceptibility andspeciﬁc heat measurements clearly suggested a long-range order occuring below
TN=4K (1). Therefore, we further investigated this exotic state using neutron scattering.
Ni2(OH)3Cl belongs to the material category of the hydroxyhalide M2(OH)3X(M: 3d magnetic ions Cu, Ni, Co, Fe or
Mn, X: Cl, Br, I), which are discoveredby us to be a new geometrically frustrated materials series (2-4). Atacamitetype Ni2(OH)3Cl is the S=1 spin system on
the deformed pyrochlore lattice. We performed neutron diffraction measurements
using Ni2(OD)3Cl with the High Energy
Resolution and High Q Resolution TripleAxis Spectrometers HER and HQR, respectively, of the Institute for Solid State
Physics, Tokyo University, installed at theexperimental port of JRR-3 (JAEA).
The neutron diffraction pattern unambiguously demonstrates the development of along-range antiferromagnetic order. Shownin Fig. 1 are the neutron diffraction patterns for Ni2(OD)3Cl powder sample at 10
K and 1.5 K, respectively, in which the antiferromagnetic reﬂection peaks are marked
by the circles and triangles. The two kindsof magnetic peaks appeared at slightly different temperatures below TN=4 K, as illustrated by the inset plot. The ordering of
Ni2+ spins is clearly of a long range order,
judged from the peak width as comparedwith the lattice diffraction peaks.

namic magnetic order in a new magnetic
material Ni2(OH)3Cl. The short characteristic ﬂuctuation time of 10-7 s witnessedby muSR and the long range order natureevidenced by neutron diffraction present
a challenge to the current understandingof magnetic ordering. We believe further
studies of Ni2(OH)3Cl engender innovation of our knowledge related to magnetism.
References(1) X. G. Zheng, M. Hagihala, K.
Nishiyama, T. Kawae: Physica B 404,
677-679 (2009).
(2) X. G. Zheng et al. Phy. Rev. B 71, 174404(2005); ibid. 71, 052409 (2005); X.G. Zheng,
M. Hagihala, T. Kawae, and C.N. Xu, ibid.
77, 024418 (2008).
(3) X.G. Zheng et al., Phys. Rev. Lett. 95,
057201 (2005); X.G. Zheng, T. Kawae, H. Yamada, K. Nishiyama, and C.N. Xu, ibid. 97,
247204 (2006).
(4) M. Hagihala, X.G. Zheng, T. Toriyi, and
T. Kawae, J. Phys. Condens. Matter. 19,145281 (2007).

Fig. 1. Fig. 1 Neutron diffraction patterns for
Ni2(OD)3Cl powder sample at 10 K and 1.5 K, respectively.

Therefore, we clearly demonstrated a dyActivity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
Report Number: 1090

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JAEA-Review 2013-040

1-2-13Inelastic neutron scattering study on crednerite CuMnO2
K. Hayashi, R. Fukatsu, T. Nozaki, and T. Kajitani
Department of Applied Physics, Graduate School of Engineering, Tohoku University, Sendai,
980-8579
Triangular lattice antiferromagnets havereceived considerable attention in recent
years due to the presence of extraordinary magnetic properties. In more than adecade, the crystal structure and the magnetic properties of delafossite-type oxide
CuFeO2 have been extensively studied. At
room temperature, the crystal structure of
the CuFeO2 belongs to the rhombohedral
space group (R3̄m), and Fe3+ ions form
the equilateral triangular lattice parallel tothe ab-plane. Recently we performed theinelastic neutron scattering measurements
for the CuFeO2 , and found the quasielastic neutron scattering (QNS) peak due tothe spin-liquid phase between Néel temperature (10.5 K) and 100 K [1]. In contrast to the CuFeO2 , the CuMnO2 has acrednerite structure belonging to the monoclinic space group (C2/m) at room temperature. The Jahn-Teller effect causes the distortion of MnO6 octahedra, and Mn3+ ionsform anisotropic triangular lattice. In the
CuMnO2 system, antiferromagnetic ordering is realized below 65 K [2]. In this study,
we performed the inelastic neutron scattering measurements for the CuMnO2 to investigate whether the spin-liquid phase appears in the anisotropic triangular lattice.
Inelastic neutron scattering measurements were carried out by the use of a cold
neutron spectrometer, AGNES. A wave
length of the incident neutron was 4.22
Å. The energy value of the scattered neutron was determined by the time-of-ﬂight
method. The energy resolution was about
0.1 meV in the present experimental condition. The data acquisition time was about
20 h. Powder CuMnO2 sample was synthesized by the solid state reaction method as
described elsewhere.
Figure 1 shows the contour map of
the inelastic neutron scattering intensity,

S(| Q|, E), on the CuMnO2 powder at 70
K. The vertical axis is the energy transfer values E and the horizontal axis is thewave number | Q|. Although the QNS
peak is found on both the CuMnO2 andCuFeO2 at around Néel temperature, the| Q|-dependence of the QNS peaks is quite
different. The QNS peak of the CuFeO2
appears in the whole | Q| range, and theintensity and the half-width oscillate as afunction of | Q| [1]. On the other hand,
the QNS peak of the CuMnO2 appears
only at the speciﬁc | Q0 | (| Q0 | ∼ 1.4 Å−1 ).
The magnetic structure of the CuMnO2
is characterized by the propagation vector q = {−1/2, 1/2, 1/2} [2] and the absolute value of the propagation vector |q|
is about 1.41 Å−1 , which is equal to | Q0 |.
Thus we conclude that the origin of the
QNS peak of the CuMnO2 should be theantiferromagnetic spin ﬂuctuation and thespin-liquid phase would not appear on theanisotropic triangular lattice antiferromagnet CuMnO2 .
References[1] K. Hayashi et al.: Phys. Rev. B 80 (2009)
144413.
[2] F. Damay et al.: Phys. Rev. B 80 (2009)
094410.

Fig. 1. Intensity contour map of inelastic neutron
scattering on the CuMnO2 powder at 70 K.

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1-2-14Long-Time Variation of Magnetic Structure in PrCo2Si2(A) K. Motoya, (A) T. Moyoshi and (B) T. Shigeoka(A) Tokyo University of Science, (B) Yamaguchi University
nals were made at various temperatures.
Clear time variations of magnetic scattering intensity exist in the narrow temperature range around T1.
We have shown that magnetic Bragg
peaks corresponding to different types ofmagnetic structures coexist near the transition temperatures and the amplitudes ofthese peaks vary with time after the changeof sample temperature.
We note that only the amplitude of Bragg
peaks vary with time. Neither the position nor the line width showed appreciable time variation. These results indicatethat we have observed the change of thevolume fractions of two different magnetic
phases same as the case of previously studied material CeIr3Si2. It should be notedthat in the present materials time variations have been observed only in narrowtemperature range around the commensurate to incommensurate transition temperatures.
(1) K. Motoya et al. J. Phys. Conf. Series:100(2010) 032048.
(2) T. Shigeoka et al.: J. Mag. Mag. Mater. 70(1987) 239.
PrCo2Si2 T=10K

4000

2000

1.2

(a) C-phase signal(1, 0, k )

1.0
0.8
4

6000

497 min
422 min
290 min
224 min
92 min39 min26 min8.0 min
2.9 min
0.5 minx10

8000
Intensity (counts / 3 sec)

Recently, long-time variation of magnetic
structure has been observed in a nondiluted uniform magnet CeIr3Si2.(1) This
material shows successive magnetic transitions in zero magnetic ﬁeld and multi-step
metamagnetic transitions at relatively low
magneic ﬁeld. These observations suggestthat the frustrating magnetic interactions
cause the long-time variation of magnetic
structure in a material without randommagnetic interactions. We have searchedfor other materials which show similar
long-time variation of magnetic structure.
We have found two intermetallic compounds PrCo2Si2 and TbNi2Si2. In this report, we present a preliminary result on
PrCo2Si2.
Previous neutron diffraction study (2)found three different magnetic phases below TN=30K. For all these phases, the magnetic moments of Pr atoms on the same(001) plane align ferromagnetically parallel or antiparallel to the c-axis. Therefore,
the magnetic propagation vector is given
as k=(0,0,k)[2pi/c]. For T<T1=9 K, the sequence of ferromagnetic planes is +-+which corresponds to the propagation vector of k=1 (C-phase). It transforms to theincommensurate structure with k=0.926 at
T1(IC1-phase). Above T2=17 K, another incommensurate structure with k=0.777 develops and persists up to TN (IC2-phase).
Time-resolved neutron scattering measurements were conducted using the 4G
triple-axis spectrometer. Figure 1 shows
the time evolutions of neutron scattering
patterns from (a) the C-phase and (b) theIC1-phase at T=10 K after cooled from 11
K. The amplitude of the C-phase signal increases with time whereas the amplitude of
the IC1-phase signal decreases. Neither thecenter position nor the width of each signal
changes with time.
Time variation measurements of these sig-

0.6(b) IC1-phase signal
1.6 min(1, 0, k )9.3 min15 min98 min496 min

0.4
0.2

0

-0.02

0.00
k (r. l. u.)

0.02

0.0
0.04

0.06

0.08

0.10

k (r. l. u.)

Fig. 1. Time evolutions of neutron scattering patterns from (a) the C-phase and (b) the IC1-phase of
PrCo2Si2 measured at 10 K after cooled from 11 K.

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1-2-15High energy-resolution inelastic neutron scattering study of the Cu3 molecularmagnetKazuki Iida and Taku J Sato
Neutron Scattering Laboratory, Institute for Solid State Physics, University of Tokyo

800
600

0.71 K
ExperimentCalculation

6.05 K
ExperimentCalculation

800
600

400

400

200

200

0

0

1.40 K
Experiment600
Calculation

10.17 K
ExperimentCalculation

800

Intensity (arb. units)

Molecular namomagnets have shown alot of macroscopic quantum phenomena.
One of that phenomena was the half-stepmagnetization change with hysteresis, observed in the Cu3 triangular spin cluster[1]. The origin of the half-step change isthought to be a Dzyaloshinsky-Moriya interaction, whereas the hysteresis is to be along life-time of the spin state. To conﬁrm
the theoretical model, we performed inelastic neutron scattering experiments [2].
We used the cold neutron triple axis
spectrometer, HER. A powder sample wascooled in the closed-cycle 3 He refrigerator.
Figure 1 shows that the inelastic intensities of magnetic excitations in Cu3 at| Q| = 0.95 Å−1 and various temperatures. From the theoretical model, we introduce the spin Hamiltonian containing
the exchange and Dzyaloshinsky-Moriya
interaction. Using this model Hamiltonian,observed inelastic spectra can be well reproduced at very wide temperature-range.
From this result, we successfully determined the energy levels of the Cu3 spincluster.
Additionally, the inelastic peaks were observed even at very high temperatures as
50 K. This suggests extraordinary weakcoupling between phonons, and spin statesin the Cu3 cluster, compared to the otherknown molecular nanomagnets.
In summary, we have determined the energy levels of the Cu3 cluster, and observed
the ’rigid’ magnetic peaks.
[1] K. Y. Choi, Y. H. Matsuda, H. Nojiri, U.
Kortz, F. Hussain, A. C. Stowe, C. Ramsey,
and N. S. Dalal, Phys. Rev. Lett. 96, 107202(2006).
[2] K. Iida and T. J Sato, arXive 1005.3975.

800
600

400

400

200

200

0
800
600

0

2.62 K
ExperimentCalculation

30.78 K
ExperimentCalculation

800
600

400

400

200

200

0
800
600

0

4.03 K
ExperimentCalculation

51.55 K
ExperimentCalculation

800
600

400

400

200

200

0

0.3

0

0.4

0.5

0.6

0.7

0.8
0.3

0.4

0.5

Energy transfer (meV)

0.6

0.7

0.8

Fig. 1. Comparison with magnetic inelastic intensities of | Q| = 0.95 Å−1 at various temperatures andcalculation results.

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
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1-2-16

Substitutioin Eﬀect of Ga for Mn on Magnetic and Dielectric Properties ofMultiferroic YMn2 O5
H. Kimura1 , Y. Sakamoto1 , M. Fukunaga1 , Y. Noda1 , N. Abe1 , T. Arima1 and H. Hiraka2
1 IMRAM, Tohoku University
2 IMR, Tohoku University
ature (LT-2DICM phase) survives in higher
Ga3+ concentration, where the weak electric polarization arises. These results indicate that the ferroelectricity in this systemcomes from both and interactions, the former is given by zig-zag AF chain involving Mn3+ spins and the latter is given by
the cycloidal Mn4+ spin structure whichis hardly affected by the dilution of Mn3+
spins.
50

Temperature (K)YMn2 O5 is famous for showing a colossal magnetoelectric effects. Since ferroelectric phase in this material arises concomitantly at the magnetic phase transition, it was believed that the electric polarization is driven by Mn4+ and Mn3+
spins.
YMn2 O5 involves edge-shared
Mn4+ O6 octahedral chain running along caxis, and a pair of Mn3+ O5 pyramids bridging Mn4+ O6 chains. In this conﬁguration,
the cycloidal Mn4+ spin structure in bcplane can give the electric polarization due
to antisymmetric exchange expressed by
Si × S j . On the other hand, zig-zag antiferromagnetic (AF) chain in ab-plane may also
produce the electric polarization by symmetric exchange striction with Si · S j interaction.
To clarify which exchange interaction(Si × S j andSi · S j ) is essential for the ferroelectricity, we substituted non-magnetic
Ga ion for magnetic Mn ion in YMn2 O5 .
Substitution by Ga3+ dilutes Mn3+ spins,
which makes the magnetic interaction in
zig-zag AF chain weakened.
Temperature dependence of magnetic
propagation wave vector was measured
at triple-axis spectrometer AKANE. Simultaneous measurements of dielectric constant and microscopic magnetism were
performed at FONDER diffractometer.
Figure shows the dielectric and magnetic phase diagram as a function of Ga3+
substitution, determined by neutron magnetic diffraction and dielectric measurements. The phase diagram shows that thedilution of Mn3+ spins suppresses the intermediate commensurate magnetic (CM)phase where the large electric polarizationarises. On the contrary, the incommensurate magnetic phase at the lowest temper-

PM (PE)
1DICM (WFE)4030

CM (FE)
2DICM (PE)20
10

LT-2DICM (WFE)

0
0.0

0.1

0.2

0.3

3+

Ga x

Fig. 1. Dielectric and Magnetic phase diagram of
YMn4+ (Mn1− x Gax )3+ O5

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1-2-17

Reinvestigation of the magnetic structure in L10-type MnPt powder samples
Keiichi Ogita, Izumi Tomeno and Yorihiko Tsunoda
School of Science and Engineering, Waseda University, 3-4-1 Ohkubo Shinjuku Tokyo 169-8555
The magnetic structure of MnPt powder samples at room temperature reported
by previous authors does not coincide in
the spin direction. The early works1-3）reported that the Mn spins are parallel to thec-axis (Type-A). Severin et al, however, reported that the Mn spins are within a cplane at the room temperature. (Type-B).4)
Since the MnPt thin ﬁlms are applied tothe pinning of the ferromagnetic sheet in
the GMR device, the direction of the magnetic moment around room temperature in
MnPt ﬁne particles which have large surface fraction would be signiﬁcant for both
fundamental physics and practical applications.
The MnPt powdered samples were prepared and separated in order of sizes using
several sieves into the sample 1 ( the diameter R1 < 20 μ m ), sample 2 ( 20 μ m < R2 <38 μ m ), sample 3 ( 38 μ m < R3 < 56 μ m), sample 4 ( 56 μ m < R4 < 106 μ m ) andsample 5 ( R5 > 106 μ m ). Since Severin et
al used the maximum particle sizes of approximately 50 μ m, the sample 3 is comparable size with their samples. Neutron
scattering measurements were performedat the T1-1 triple axis spectrometer.
What we are concerned here is only the
direction of Mn magnetic moments in the cplane, the type-A or the type-B structures,at room temperature. We can easily distinguish these two types of structures using the intensity ratio of the pure magnetic
peaks I (100) / I (101) because of the large
tetragonality of the lattice c/a = 0.915. Afterthe corrections of the Lorentz factor and themagnetic form factor, the expected intensity ratios for the type-A and type-B structures are 3.10 and 1.04, respectively.
The experimental data obtained for the
sample 1 ( R1 < 20 μ m ) and the sample
5 ( R5 > 106 μ m ) are given in Fig.1-a)and Fig.1-b). The ratios of the observed in-tegrated intensities for the sample 1 and thesample 5 are 3.03 and 3.04, respectively. The
ratios for other samples also show the similar values. Thus, all our data support the
type-A structure independent of the particle sizes. Since the sample 1 is already far
smaller than that of Severin et. al, it is hardto ascribe the causes of the difference to be
the size effect or the surface effect.
1) A.F.Andresen et al: Philos. Mag. 11(1965) 1245
2) L.Pal et al: J. Appl. Phys. 39 (1968) 538.
3) E.Kren et al: Phys. Rev. 171 (1968) 574.
4) C.S.Severin et al: J. Appl. Phys. 50 (1979)
4259.

Fig. 1.

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1-2-18High Temperature Multiferroic State in RBaCuFeO5(R=Y, Lu and Tm)
Y. Yasui, Y. Kawamura, , S. Tatematsu, M. Sato and K. Kakurai*
Dept of Phys., Nagoya Univ., *JAEA
Materials with magnetic and ferroelectric
coexisting orders are called multiferroics,
and have been actively studied with interest in both ﬁelds of basic and applied sciences. In particular, systems witha strong magnetoelectric coupling and/orwith large magnetic and ferroelectric moments attract much interest from the view
point of technical application, because theirelectric polarizations (magnetic-ordering
patterns) can be controlled by the external magnetic ﬁeld (electric ﬁeld), and it isquite desirable to ﬁnd multiferroic systems
above room temperature. Such a system is
not known, at least, in zero magnetic ﬁeld.
The ferroelectricity induced by an incommensurate magnetic order at about 230K
have been reported by Kundys et al. for
YBaCuFeO5 with an oxygen-deﬁciency ordered perovskite structure [1]. Stimulatedby this work, we have measured magnetic
and ferroelectric properties of RBaCuFeO5(R=Y, Lu and Tm), and also carried out
neutron powder diffraction studies of TmBaCuFeO5 using the triple axis spectrometer T1-1 installed at JRR-3 [2].
From the temperature (T) dependencesof the magnetic susceptibility, two magnetic transitions were found at TN1 andTN2 for each system of YBaCuFeO5 and
LuBaCuFeO5. TN1˜455K and 475 K andTN2˜180K and 178 K, respectively. Measurements of the dielectric susceptibility
and/or pyroelectric current (electric polarization) have shown that the ferroelectrictransition occurs at ˜TN2. From the analyses of the reﬂection angles of the powder
neutron diffractions, magnetic superlattice
reﬂections were found to appear at the reciprocal points of (h/2. k/2. l/2) with odd
values of h k l at TN1 with decreasing T,
and at TN2, additional reﬂections appear
at the reciprocal points of (h/2. k/2. l/2?
δ) with odd values of h k l and δ˜0.1. Al-

though details of this modulated structure
have not been identiﬁed, we can ﬁnd thatmagnetic moments couple with the electric
polarization, and that ferroelectricity is induced by the magnetic transition to the incommensurate magnetic structure at TN2.
Figure 1 shows the T dependence of theelectric polarization P obtained for TmBaCuFeO5 by measuring the pyroelectric
current. We have conﬁrmed the sign reversal of electric polarization, when the sample was cooled under the reversed electric ﬁeld. In Fig. 2, the integrated intensities of 1/2 1/2 1/2 and 1/2 1/2 1/2+
δ (δ˜0.1) reﬂections obtained by neutron
diffraction studies are shown against T,
where we can ﬁnd that the magnetic transition to the modulated structure takes place
at TN2=260 K, indicating again that theferroelectric polarization appears simultaneously with this magnetic transition. We
also add that in the dielectric susceptibilitytemperature curve, a rather broad peak
centered at about 260 K is superposed, indicating the gradual nature of the ferroelectric transition of TmBaCuFeO5. This characteristics is consistent with the behaviorof the T-dependence of the integrated intensity of the 1/2 1/2 1/2+δ (δ˜0.1) reﬂection in Fig. 2. Interesting points is thatthe ﬁnite polarization of TmBaCuFeO5 appears, with decreasing T, at a temperature
as high as the melting point of ice.
References[1] B. Kundys et al.: Appl. Phys. Lett. 94(2009) 072506.
[2] Y. Kawamura et al. : J. Phys. Soc. Jpn. 79(2010) in press.

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JAEA-Review 2013-040

Fig. 1. Fig. 1. T dependence of the electric polarization obtained for TmBaCuFeO5 is shown. Fig.2.
Integrated intensities of the 1/2 1/2 1/2 and 1/2
1/2 1/2+δ magnetic reﬂections of TmBaCuFeO5
are plotted.

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1-2-19Neutron diﬀraction study in triangular spin tube CsCrF4
T. Masuda and H. Manaka
ISSP, the university of Tokyo, Kagoshima University.
Theoretical study in 1D chain of antiferromagnetic triangular spins, spin tube , predicts RVB-like spin liquid state with resonating spin dimers [1]. Spin correlation
decays exponentially and ﬁnite spin gap
opens at q=pi in the magnetic excitation[2]. Further theoretical study suggests an
exotic phase such as Tomonaga Lattinger
Liquid with chiral order by applying magnetic ﬁeld or by introducing lattice distortion [3]. Very recently an ideal candidateof the triangle spin tube CsCrF4 [4] wasdiscovered. Cr3+ ions with localized S=3/2
spins forms equilateral triangles in the a-b
plane and they form 1D chain in the c direction. The measured bulk properties including magnetic susceptibility and heat capacity were consistent with typical behaviorsof the spin tube [4]. Hence we study theneutron diffraction study in CsCrF4 to reveal the ground state of triangular spin
tube.
In April 2009 we performed the initial
neutron diffraction experiment on powder
crystalline sample with reasonable quality. We used 5G beamline with collimation
setup open-80 -sample-PG-80 -open. Neutron energy is ﬁxed at 14.7meV and saphireﬁlter is installed to eliminate high energy
neutrons. ORANGE type cryostat was used
to achieve low temperature.
We measured diffraction pattern at T = 1.5
K and 10 K. To our surprise unidentiﬁed
peaks were observed at 1.5K at 2theta ˜
19 °, 22 °, and 25 ° as indicated by redsolid curves in the Figure. Then we measured the temperature dependence and we
found that the peaks seemed to behave asorder parameter with the critical temperature of 4K. The results indicated the magnetic order, which is totally contradicts previous scenario discussed in Ref.[4]. Hence
we prepared new powder sample with special care and performed the second neutron

experiment in March 2010. The black curveis the new data. Obviously all the peaks
were safely indexed and no magnetic peaks
were found. This means no magnetic order
down to 1.5K and we conclude that spin
liquid is realized in triangular spin tube
CsCrF4.
[1]K. Kawano, et al., J. Phys. Soc. Jpn. 66,
4001 (1997).
[2] S. Nishimoto, et al., Phys. Rev. B 78,
054421 (2008).
[3] M. Sato, et al., Phys. Rev. B 75, 014411(2007).
[4] H. Manaka, et al., J. Phys. Soc. Jpn. 78,
093701 (2009).

Fig. 1. Neutron diffraction in CsCrF4.

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1-2-20Spin excitations in pyrochlore lattice
K. Tomiyasu(A), M. Matsuda(B), H. Ueda(C), A. Yamamoto(D)(A)Tohoku Univ., (B)JAEA, (C)ISSP Univ. Tokyo, (D)RIKEN
We measured spin excitations in geometrically frustrated magnets HgCr2O4 andTl2Rh2O7 on HER and PONTA, respectively. We did not use HQR in this year because of the unplanned shutdown of reactor.
The 4 g of HgCr2O4 powder sample and
1 g of Tl2Rh2O7 one were used. Both thematerials include nuclei with high absorption coefﬁcients (Hg 372 barn and Rh 145barn). The experiments aimed not only to
study frustration effect but also to try to obtain signiﬁcant signals from such a kind of
powder samples. Magnetic ions are Crˆ3+(S=3/2) and Rhˆ4+ (S=1/2).
As the results, we succeeded in obtaining the clear S(Q,E) pattern for HgCr2O4,
as shown in Figure. Double peaks are observed along the horizontal axis above andbelow TN, which is interestingly different from the hexamer with single peak
emerging in isomorphic materials ACr2O4(A=Mg,Zn,Cd). Since the ratio of |J1/J3| istheoretically expected to become small in
HgCr2O4 among the chromites, we thinkthat HgCr2O4 exhibits another type of spin
molecule that satisﬁes all the exchange interactions.
No appreciable peak was observed for
Tl2Rh2O7. The boundary of feasibility will
be around here.

Fig. 1.

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
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1-2-21

Observations of dynamical spin molecules in geometrically frustrated spinelmagnets
K. Tomiyasu(A), Y. Kousaka(B), T. Yokobori(B), A. Tominaga(C), S. Hara(C), S. Ikeda(D)(A)Tohoku Univ., (B)Aoyama-Gakuin Univ., (C) Chuo Univ., (D) AIST
We measured spin excitations in spinel
GeCo2O4 on TOPAN, and prepared a sixcrystal assembly of spinel MgCr2O4 (˜ 4 cc)
on AKANE to do experiments on a new
chopper spectrometer MERLIN at ISIS, UK.
We did not use HERMES that our proposal
was not accepted for.
This report introduces parts of dataon GeCo2O4. Please see Kotai Butsuri (inJapanese) for MERLIN data. GeCo2O4 has
frustration with orbital degree of freedom (Coˆ2+, S=3/2, dˆ7). Compared to
the representative spin-frustrated system
MgCr2O4 with no orbital degree of freedom, it is interesting what kind of frustration effect is generated by the orbital sector.
Figure shows the data measured at E =4 meV in paramagnetic phase. The intensity focuses in the 000, 400, 004, 222, and440 zones (all even), and remains at thezone centers also. This fact means that theferromagnetic spin correlation is dominant
in the spin molecule ﬂuctuation in spite ofspin frustration. Meanwhile, the ferromagnetic spin correlation favors antiferromagnetic orbital correlation in Kugel-Khomskii
mechanism like in K2CuF4, therefore theferromagnetism in the spin molecule could
be interpreted as the orbital effect in frustration.

Fig. 1. Intensity distribution in Q-space at E=4 meV
in paramagnetic phase in GeCo2O4.

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
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1-2-22Magnetic excitation in triangular spin tube CsCrF4
Takatsugu Masuda and Hirotaka Manaka
ISSP the univ. of Tokyo and Kagoshima university
Theoretical study in 1D chain of antiferromagnetic triangular spins, spin tube , predicts RVB-like spin liquid state with resonating spin dimers [1]. Spin correlation
decays exponentially and ﬁnite spin gap
opens at q=pi in the magnetic excitation[2]. Further theoretical study suggests an
exotic phase such as Tomonaga Lattinger
Liquid with chiral order by applying magnetic ﬁeld or by introducing lattice distortion [3]. Very recently an ideal candidate of
the triangle spin tube CsCrF4 [4] was discovered. As shown in the Figure Cr3+ ionswith localized S=3/2 spins forms equilateral triangles in the a-b plane and they form
1D chain in the c direction. The measured
bulk properties including magnetic susceptibility and heat capacity were consistent
with typical behaviors of the spin tube [4].
Hence we performed the inelastic neutron
scattering in CsCrF4 to reveal the magnetic
excitation of triangular spin tube.
High quality powder sample was preparedby solid state reaction method. Special care
was taken to eliminate magnetic impurities. ORANGE type cryostat was used toachieve T = 1.5 K. We used 5G beamlinewith collimation setup open-80 -samplePG-80 -open. Saphire ﬁlter is installed
to eliminate high energy neutrons. Mainscans were collected with neutron ﬁnal energy (Ef) ﬁxed at 14.7meV. Suspiciou excitation was observed at 17meV that is coincident with a famous supurious due to 2ki- elastic incoherent - 3kf. We performed atest scan with Ef=30.5meV and conﬁrmed
the peak was supurious.
We collected S(q,E) in wide q-E space, i.e.,
0.9A-1 < q < 4A-1 with delta q=0.2A-1 and-3 < E < 14meV with deltaE = 0.5meV.
Continuous excitation upto 9meV was observed and its intensity decreases at higher
q. This means that the excitation is dispersive and its origin is magnetic. Spingap was not observed in our energy range,i.e., E > 2meV. Assuming 1D system wemake data transformation from powder averaged S(q,E) to pure 1D S {1D}(q,E)[5].
Though the transformed data is rather
noisy, we clearly observed high intensity
at q˜0.5c* and 1.5c*. The result is consistent
with 1D AF system with lattice unit of c.
In combination with diffraction study wefound that the ground state is disordered
and the spin system is 1D AF. So far the
results are consistent with typical behaviorof triangular spin tube. Further experimentby high resolution cold neutron is required
to reveal more detailed spin dynamics, e.g.,existence of spin gap, correlation in triangular ring, etc.
[1]K. Kawano, et al., J. Phys. Soc. Jpn. 66,
4001 (1997).
[2] S. Nishimoto, et al., Phys. Rev. B 78,
054421 (2008).
[3] M. Sato, et al., Phys. Rev. B 75, 014411(2007).
[4] H. Manaka, et al., J. Phys. Soc. Jpn. 78,
093701 (2009).
[5] K. Tomiyasu et al., Appl. Phys. Lett. 94,
092502 (2009).

Fig. 1. Crystal structure of CsCrF4.

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1-2-23

Anisotropic magnetic correlations and a magnetic ﬁeld annealing eﬀect in a helicalmagnet ErNi2Ge2
Y. Tabata, M. Okue, T. Yamazaki, T. Waki, H. Nakamura
Graduate School of Engineering, Kyoto University
A rare earth intermetallic compound
ErNi2Ge2 with a tetragonal ThCr2Si2-type
structure is a proper-helical magnet with
TN =3.0K and magnetic wave vector
km=(0,0,0.75). From the recent neutron
scattering experiments by using single
crystalline samples, we found that an
anomalous anisotropic magnetic diffuse
scattering coexists with the magnetic Bragg
scattering in the magnetic ordered phase[1]. Anomalously, a strong widespreaddiffuse-scattering is found along the[100]- and the [110]-directions, whereas,no diffuse scattering is found along the[001]-direction. The results indicates thatthe long-range and the short-range orders
coexist in the antiferromagnetic region
and the short-range order consists of
1-dimensional long-range helices along
the c-axis. A helix has a degree of freedomof its phase, being the same as a XY-spin,
and the correlations between helices in
ErNi2Ge2 is ferromagnetic. Consequently,
we speculate that ErNi2Ge2 is a mimic system of the ferromagnetic XY spin systemand the coexistence of the short-range andthe long-range orders is an emergence ofthe Kosterlitz-Thouless (KT) like phase.

netic Bragg scattering appears no longer
and only the diffuse scattering was observed down to zero ﬁeld. And also, inthe H-decreasing process, the correlation
length shows divergent behavior as shownin Fig. 1. The magnetic state after the ”magnetic ﬁeld annealing” is more similar to theKT phase and the coexistent-state of theshort-range and the long-range orders inzero-ﬁeld-cooling may be a failure of theKT phase.
[1] Y. Tabata et al., J. Phys. Conf. Series 145,
012078 (2009).

Fig. 1. Field-dependence of the correlation length of
the short-range order.

In 2009, we performed a neutron scattering experiment under magnetic ﬁeld on
the triple-axis spectrometer T11 installedat JRR-3M reactor to investigate magnetic
ﬁeld effects to the anisotropic short-rangeorder in ErNi2Ge2. The magnetic ﬁeld isapplied along the [110]-direction, being themagnetic easy axis. The magnetic Bragg
scattering disappears at Hc = 0.6 T, being consistent with the result of macroscopic magnetization measurements, however, the diffuse scattering remains up to
1.2 T. Surprisingly, when decreasing magnetic ﬁeld from the ﬁeld above Hc, the magActivity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
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JAEA-Review 2013-040

1-2-24Modulated Magnetic Structure in the Rare-earth Clathrate Eu8 Ga16 Ge30
T. Onimaru1 , C. H. Lee2 and T. Takabatake1,3
1 AdSM, Hiroshima University, Higashi-Hiroshima 739-8530, 2 National Institute of Advanced

Industrial Science and Technology, Tsukuba 305-8568, 3 IAMR, Hiroshima University,
Higashi-Hiroshima 739-8530

below T ∗ , the intensity steeply increases,
and the peak width ﬁrst increases, andthen decreases. These complex behaviors
at around T ∗ can not be explained by a simple ferromangetic structure. We now analyses the q-dependence of the intensity ofthe magnetic contribution in order to conﬁrm magnetic structures at the intermediate range of T ∗ < T < TC and at the groundstate of T < T ∗ .
Eu8Ga16Ge30

0.03

8000

0.02

T*

7000

6000
0

TC

0.01

022
10

20

30

40

).u.l.r( MHWH).u.a( ytisnetnI detargetnI

In the clathrate compound Eu8 Ga16 Ge30 ,the guest magnetic ions of Eu2+ within
the tetrakaidecahedral cages are rattlingamong off-center positions even within
the ferromagnetically ordered state below
TC =36 K.[?, ?] The resistivity and lowﬁeld magnetization for y=0 show broad
humps at 24 K and 20 K, respectively.[?]These anomalies rapidly disappear upon
substituting Si for Ge in Eu8 Ga16 Ge30 ,
implying the existence of multiple ferromagnetic structures only in the pureternary compound.
Furthermore, theCurie temperature TC decreases from36.2 K for Eu8 Ga16 Ge30 to 32.6 K for
Eu8 Ga16 Ge22.3 Si7.3 , and in conjunction withthis decrease, the jump of the speciﬁc heatat TC is doubled. These observations suggest that a delicate modulated magnetic
structure in pure Eu8 Ga16 Ge30 is unstable against Si substitution and changes toa more robust and uniform ferromagnetic
state with Si substitution.
In the present work, we performed neutron diffraction measurements on a singlecrystalline sample Eu8 Ga16 Ge30 preparedwith 153 Eu isotope for avoiding strong absorption of neutrons. Figure ?? shows
the temperature dependence of the integrated intensity (left-hand scale) and thepeak width (right-hand scale) of the 022
peak. Above TC , the 022 peak was observed because of the nuclear contribution.
Below TC , the intensity start increasing,and the peak width increases at aroundTC and slowly decreases. These are attributed to development of ordered magnetic moments below TC , being consistent
with the results of the magnetization measurements. At around T ∗ ∼20 K, the intensity shows hump, and the peak widthreaches a minimum value. Further cooling

50

0

T (K)
Fig. 1. Temperature dependence of the integrated
intensity and the peak width of the peak at Q=(022).

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
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JAEA-Review 2013-040

1-2-25Multipolar Transition in a Trigonal Pr4 Ni3 Pb4 with Non-Kramers Ground State
T. Onimaru1 , A. Ishida1 , T. J. Sato2 and T. Takabatake1,3
1 AdSM, Hiroshima University, Higashi-Hiroshima 739-8530
2 ISSP, University of Tokyo, Tokai 319-1106

3 IAMR, Hiroshima University, Higashi-Hiroshima 739-8530

tering spectra of Pr4 Ni3 Pb4 at T =4 K and
30 K, and that of the reference La4 Ni3 Pb4
at T =4 K. At 2.5 meV and 6.7 meV, peaks
were observed. The intensities of thepeaks decrease with increasing temperature, therefore, they result from crystalline
electric ﬁeld (CEF) excitations. These arealso conﬁrmed because no peak was observed at the energies in the reference
La4 Ni3 Pb4 . From the CEF analysis on themagnetization, the peak at 2.5 meV is probably ascribed to a CEF excitation at the Pr
at the 9b site with the C1 point group, however, the peak at 6.7 meV the Pr at the 3asite with the C3 point group. We now analyses the temperature dependence of the intensities of the CEF excitation peaks to conﬁrm the CEF level scheme of both the Prsites in Pr4 Ni3 Pb4 .
6000)nim/stnc( ytisnetnI

Multipolar degrees of freedom often play
an important role in 4 f electron systems.
Non-Kramers ions such as Pr3+ and Tm3+
possess multipolar degrees of freedom
other than magnetic dipoles even in a trigonal symmetry. In the present work, wehave focussed on a Pr-based intermetallic
compound Pr4 Ni3 Pb4 , where Pr ions occupy the 3a site with the C3 point symmetry and the 9b site with the C1 point
symmetry. In the C3 point symmetry, anine-fold multiplet 3 H4 splits into threeΓ1 singlets and three Γ23 doublets withquadrupolar degrees of freedom, although,in the C1 point symmetry, nine Γ1 singlets. The isothermal magnetization showsa shoulder-like anomaly at 4 T only for
B||c, suggesting that an excited Γ23 doublet
exists at a small energy of 4 K above theΓ1 singlet ground state of the Pr at the 3asite. The speciﬁc heat has cusp-type double
anomalies at TN1 =2.7 K and TN2 =2.1 K.
In neutron diffraction measurements ona single crystalline sample, a magnetic
peak appears at Q=(1,0, 14 ) and its equivalent positions below TN2 =2.1 K. At thetemperature range between TN2 and TN1 ,the peak at (1,0, 14 ) splits into two peaksat (1,0, 14 ±δ) (δ∼0.1) where the peak positions shift on cooling. These behaviors indicate an incommensurate magnetic structure. We observed both peaks at 2.14
K close to TN2 , suggesting that the IC-C
transition at TN2 should be of ﬁrst order.
Comparing the intensities of the equivalentmagnetic peaks, they tend to be strongly
suppressed as the peak positions approachto the [001]∗ direction. It means that themagnetic moments have a trend to alignalong the c-axis in the ordered structures.
Figure 1 shows the inelastic neutron scat-

4G, kf-fix, kf=2.67 -1
40'-80'-80'-PG-HFA-Open

Q=1.9

4000

2000

0

0

5
E (meV)-1

Pr4Ni3Pb4
4K
30 K
La4Ni3Pb4
4K

10

Fig. 1.
Inelastic neutron scattering spectra of
Pr4 Ni3 Pb4 at T =4 K and 30 K, and that of the reference La4 Ni3 Pb4 at T =4 K.

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
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JAEA-Review 2013-040

1-2-26
Investigation of spin molecule in geometrically frustarted spin system NiS2
M. Matsuura
Institute for Materials Research, Tohoku University, Katahira, Aoba-ku, Sendai 980-8577
Nearest-neighbor
antiferromagnetic(AF) interaction on a spin loop that includes an odd number of spins gives riseto an inherent geometrical frustration
effect in magnetic systems. This frustration
causes high degeneracy of ground states,
resulting in intriguing phenomena thathave attracted intense interest for many
years. Ni2+ (S = 1) atoms in NiS2 forms
fcc structure, in which a geometrical spin
frustration causes a strong suppression of
AF long range ordering and a complicatedspin structure at low temperatures.[1]Matsuura et al has perfomed inelastic
neutron scattering and found spin ﬂuctuation showing characteristic Q-pattern
extending along the boundary of the Brillouin zone boundary of fcc lattice in theparamagnetic phase, which is universallyobserved in geometrically frustrated spin
systems.[2] Not only in the paramagnetic
phase, but in AF long range orderedphase, recent inelastic neutron scatteringstudies on one of the typical frustrated
spin systems spinels have revealed a novel
spin excitations conﬁned in a narrowenergy range at discrete levels, which was
associated with localized spin molecules,
such as AF spin hexamer and heptamer.[3]The purpose of the present report is toinvestigate localized spin molecules in
the AF ordered phase of NiS2 . Neutron
scattering experiments were performedon the triple-axis spectrometers PONTA
installed at the JRR-3 Reactor hall of JAEA.
We conﬁrmed that a spin wave froma AF Bragg point reaches zone boundaryaround ω = 33 meV. Therefore, we perfomed mesh scan at ω = 35 meV in (hhl)plane at T = 10 K (T < TN = 39.6 K), as
shown in Fig.1. Around AF Bragg points(open circles), ridges extend along [011] direction, which connects to another ridges
on the Brillouin zone boundaries (dottedlines). Apparently, the Q-pattern of thescattering intensity has a larger periodicity than chemical (fcc) unit cell. Origin of
these modes should be studied by temperature and Q-dependences in near future tocheck universality of spin molecules in thegeometrically frustrated spin systems.
References[1] T. Miyadai et al., J. Phys. Soc. Jpn. 38 115(1975).
[2] M. Matsuura et al., Phys. Rev. B 68 94409(2003).
[3] K. Tomiyasu et al., Phys. Rev. Lett. 101
177401 (2008).

Fig. 1. Contour map of scattering intensity at ﬁxed
energy transfer of 35 meV in a (hhl) plane. The dotted line shows Brillouin zone boundaries of fcc lattice. The solid rectangles and open circles show nuclear and magnetic Bragg points, respectively.

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1-2-27Spin dynamics in novel Rare-earth based single-molecule magnets
Takashi Kajiwara1 , Motohiro Nakano2 , Maiko Kofu3 , Osamu Yamamuro3
1 Nara Women’s Univ., 2 Osaka Univ., 3 ISSP, Univ. of Tokyo
Single-molecule magnets (SMMs) are aclass of metalorganic compounds, which
exhibit hysteresis of magnetization upon
external magnetic ﬁeld even though they
have no long-range cooperative interactions. This behavior originates in a large
magnetic moment and uniaxial magnetic
anisotropy (D < 0), which gives rise toa double-well potential of the spin-up andthe spin-down states and relaxation phenomenon between them. In recent years,
not only thermal activation processes but
also quantum tunneling ones are reported
in SMMs. However, the mechanism ofquantum tunneling process has not been
fully understood yet.
To date, SMMs containing multiple transition metal atoms such as Mn, Fe, andNi, have been intensively studied. Most
recently, a new series of rare-earth based
SMMs was discovered and attracts muchattention. Because of large contributionof angular momenta, lanthanide complexes
can become SMMs containing only one
or two magnetic ions, being simpler than
the transition metal SMMs and suitable forfundamental studies. Recently, we havesucceeded to synthesize SMMs consistingof Tb (J = 6) and Cu (S = 1/2) ions (seeFig. 1(a)) and found that the system switchfrom SMMs (complex 1, 2, 4) to non-SMMs(complex 3, 5) by slight structural modiﬁcation around the Tb ions. From dc magnetic susceptibility data, we suppose that
non-SMM complexes do not have easy-axis
anisotropy but easy-plane one. Our purposes are (i) to determine the parametersof Hamiltonian by inelastic neutron scattering (INS) measurements and (ii) to investigate the magnetic relaxation by quasielastic neutron scattering (QENS) measurements.
We have performed INS measurements
for complex 1 on AGMES in the standard

mode (FWHM = 0.12 meV). As seen in
Fig. 1(b), a clear excitation peak was observed at 1.7 meV. We expect that thispeak corresponds to the excitation between|6, 1/2 and |6, −1/2 states. Assuming
an exchange coupling between Tb and Cu
spins, the exchange coupling is estimatedto be 0.28 meV. The INS experiments for
non-SMM complex are now in progress.
We have also carried out QENS measurements for complex 1 in the high-resolution
mode (FWHM = 0.049 meV). Above 50K,
we observed a QENS component. In order to conﬁrm whether the QENS resultsfrom the magnetic relaxation, further experiments will be performed.
[1] T. Kajiwara, et. al.: Inorg. Chem., 47(2008) 8604.

Fig. 1. (a) Molecular structure of Tb-Cu based compounds. (b) S(Q,ω) of complex 1 taken on AGNES.

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JAEA-Review 2013-040

1-2-28Spin dynamics in multiferroics Ba2 Mg2 Fe12 O22
D. Okuyama(A), N. Kida(B,C), S. Ishiwata(D), Y. Taguchi(A), K. Iwasa(E), T. Arima(F),and Y. Tokura(A,B,D)(A)RIKEN-CMRG, (B)ERATO-MF, (C)Univ. of Tokyo-GSFS, (D) Univ. of Tokyo, (E)Tohoku
Univ., (F)Tohoku Univ.-IMRAM
Multiferroics with both the ferromagnetic and ferroelectric order have recently
been attracting an intense interest. Since
Pimenove and coworkers proposed thatmagnetic excitation induced by an electric ﬁeld component of light, termed electromagnon[1], extensive studies were performed by using terahertz spectroscopy formany multiferroic materials[2]. In thiswork, with use of inelastic neutron scattering technique, we observed magnetic excitation at the frequency where the electricdipole-active magnetic resonance (on electromagnon) was found by terahertz spectroscopy in a multiferroic Ba2 Mg2 Fe12 O22 .
The space group of Ba2 Mg2 Fe12 O22 is R3̄m.
The crystal structure is illustrated in Fig.
1 (d). The lattice constants are a=5.8798
and c=43.589 Å. The proper screw magnetic order below 195 K and conical magnetic order (see Fig. 1 (d)) below 50 K
were observed[3]. The conical phase exhibits large magneto-electric effects. The
direction of the ferroelectric polarization
can be controlled by a magnetic ﬁeld of tens
mili tesla[4,5]. Inelastic neutron scattering experiment was performed at the 3-axis
spectrometer TOPAN (6G). Twin-free single crystals of Ba2 Mg2 Fe12 O22 were grownby a ﬂux method. Two single crystals werealigned with the [1 1 0] axis normal to thescattering plane. We chose the E f -ﬁxed(13.5meV) mode and measured the inelastic spectrum up to an energy transfer of 10
meV.
Figure 1 shows the dielectric constantand inelastic neutron scattering spectrum,
measured at 10 K, at which the conical spin
structure is founded (Fig. 1 (d)). The terahertz light spectroscopy could identify apeak structure in ε 2 of Fig. 1 (b) and a dispersive structure in ε 1 at around 2.8 meV

as shown in Fig. 1 (a). It is noted that theresonance takes place only with the electric ﬁeld of terahertz-light parallel to the[001]-axis. This result indicates that the observed resonance originates from the electric ﬁeld of light. The intensity of the resonance decrease above the conical transition temperature 50 K. This implies thatthe observed resonance is strongly coupledwith the conical spin structure[6]. To elucidate the origin of the observed resonance,
we measured the magnon spectra by using neutron inelastic scattering. Figure 1(c) shows inelastic neutron scattering spectrum at the momentum transfer of (2+δ 2-δ 1.6), near the magnetic Γ point (2 2 1.6). At δ=0, a clear peak is observed
around 2.8 meV below the conical transition temperature 50 K, similar to the resonance spectrum measured by the terahertzlight. With increasing temperature, the intensity of the peak becomes weaker andthe position of the peak shifts to lower
energies. Above the transition temperature 50 K, the peak merges to the elastic peak. The disappearance of the peakabove the conical transition temperature
indicates that the observed peak has themagnetic origin. These results clearly indicate that the resonance observed by terahertz spectroscopy is nothing but a magnetic excitation induced by electric-ﬁled oflight, namely, electromagnon. We also observed the parabolic dispersion relation of
the magnon along the (1 -1 0).
In summary, by using the neutron inelastic scattering technique, we assigned
the origin of a resonance observed by terahertz spectroscopy to an electromagnon.
Detailed results are reported in Ref. [6].
[1] A. Pimenov et. al.: Nat. Phys. 2,
97 (2006). [2] N. Kida et. al.: J. Opt. Soc.

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JAEA-Review 2013-040

Am. B 26, A35 (2009). [3] S. Ishiwata et. al.:Phys. Rev. B 81, 174418 (2010). [4] S. Ishiwata et. al.: Science 319, 1643 (2008). [5] K.
Taniguchi et. al.: Appl. Phys. Express 1,
031301 (2008). [6] N. Kida et. al.: Phys. Rev.
B 80, 220406 (2009).

Fig. 1. (a,b) The dielectric function deduced byterahertz-light spectroscopy. (c) Inelastic neutron
scattering spectra. (d) Schematic views of crystal
structure and magnetic structure below 50 K.

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JAEA-Review 2013-040

1-2-29High-energy excitations in BaFe2As2
K. Matan and T. J. Sato
ISSP, University of Tokyo and TRIP, JST[2] K. Matan et al., Phys. Rev. B 79 (2009)054526.
100
Intensity (counts/200sec)

In 2008, a group in Japan reported highTc superconductivity in the Fe-based layered material LaFeFAsO [1]. Since then,a boom of the superconductivity researchhas been continuing all over the world todate. An intriguing system of this class
may be BaFe2As2, since it becomes superconducting in various ways, such as chemical doping or applying pressure. In 2009,
we performed inelastic neutron scatteringexperiments for the ﬁrst time on the single crystalline BaFe2As2, and showed that
there is a gapped spin-wave-like excitationin the low energy regions (hw < 40 meV) in
this system [2]. To extend the energy range,
we have performed neutron inelastic scattering study of BaFe2As2 at the PONTA
spectrometer.

Q=(1,0,1); T=3K

80
60
40
20
0

0

2

4

6

8

10

12

14

Energy transfer (meV)Fig. 1. Inelastic spectrum at Q=(1,0,1) and at T=3K
for the Ba(Fe,Co)2As2.

Shown in Fig. 1 is the typical inelastic scattering spectrum obtained at PONTA using the single crystal of Ba(Fe,Co)2As2 (approximately 1 gram). As can be seen in
the ﬁgure, a strong background hinders
the gapped behavior. The spectrum wasalso checked using exactly the same parent sample BaFe2As2 used in the GPTAS
experiment, but the background level was
unacceptable to observe small signal fromthe BaFe2As2 and/or Ba(Fe,Co)2As2 single crystals. We have tried various ways
to reduce the background, and at the end
we have succeeded in reducing the background by roughly a factor of 2. However,this was not sufﬁcient for our purpose, i.e.,observation of the higher energy excitations, which is deﬁnitely weaker, and thus
we have terminated this project at PONTA,
and decided to continue at either spallation source or overseas facilities where Cu
monochromator is available.
[1] Y. Kamihara et al., J. Am. Chem. Soc. 130(2008) 3296.
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1. Neutron Scattering

3 Strongly Correlated Electron     
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JAEA-Review 2013-040

1-3-1

Magnetic Correlations in the Pseudogap Phase of Optimally Doped Bi2212
M. Matsuura1 , Y. Yoshida2 , H. Eisaki2 , N. Kaneko2 , C.-H. Lee2 and K. Hirota1
1 Department of Earth and Space Science, Faculty of Science, Osaka University, Toyonaka,

560-0043.

2 AIST, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568

In the underdoped region of high-Tc system, a partial gap structure in the charge orspin excitation spectra has been observed
universally though its origin is still controversial. Recent inelastic neutron scattering study of underdoped YBa2 Cu3 O6.6 has
shown that the dispersion relations of spin
excitations in the superconducting andpseudogap states are qualitatively different; unusual vertical dispersion is observedin the pseudogap state instead of the hour
glass shape of the magnetic dispersions inthe superconducting state[1]. This important difference in the magnetic excitation
between the pseudogap and superconducting state should be studied in other highTc system. Therefore, we explored themagnetic spectrum in the pseudogap stateof optimally doped Bi2.1 Sr1.9 CaCu2 O8+δ(Bi2212).
Neutron scattering experiments were
performed on the triple-axis spectrometer PONTA with horizontal collimations of48 -80 -80 -120 and E f of 30.5 meV. The single crystals were grown by ﬂoating zone
method and Tc is determined to be 86 K
from a shielding signal. We have aligned 9
single crystals on Al plates. The total massof aligned crystals is 4.6g (0.71cc). The momentum transfer ( Q x , Qy , Qz ) is denoted inunits of reciprocal lattice vectors a∗ ∼ b∗ =1.64 Å−1 and c∗ = 0.20 Å−1 .
Figure 1 shows the contour map of thescattering intensity near (π, π) measured
in the pseudogap state (T = 100 K). The
single commensurate peak at center, thatis (π, π), and ω = 26 meV splits anddisperses outwards with increasing energies, which is similar to the dispersion observed in the pseudogap state of underdoped YBCO[1]. Note that the scattering intensity is especially large at ω =34 meV, where the resonance peak at (π, π)(q = 0) appears in the superdonducting
state. This suggests coupling between spinwave mode and the other excitation at ω =34 meV. Interestingly, the same value of thesuperconducting gap Δ has been reported
from an STS study of optimum Bi2212[2],indicating pre-formed singlet pairs in thepseudogap phase could be the origin ofsuch enhancement of the spin-wave intensity.
References[1] V. Hinkov et al., Science 319, 597 (2008).
[2] T. Nakano et al., J. Phys. Soc. Jpn. 67, 2622
(1998).

Fig. 1. Intensity contours of the inelastic scattering
near (π, π) measured at T = 100 K (> Tc ). The thickblack line shows spin-wave dispersion of two-leg
spin ladder with gap of 24 meV and zone boundary
energy of 80 meV.

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1-3-2

Study of spin ﬂuctuations in electron-doped antiferromagnetic phase of
Pr1.4−x La0.6 Cex CeO4
M. Fujita1 , M. Nakagawa2 , and K. Yamada3
1 Institute for Materials Research, Tohoku University, Katahira, Sendai 980-8577, Japan
2 Department of Physics, Tohoku University, Aramaki, Sendai 980-8578, Japan
3 World-Premier-International Research Center Initiative,
Tohoku University, Katahira, Sendai 980-8577, Japanwave velocity obtained by a energy dependence of peak-width is almost constant in
the AF ordered phase for x ≤0.10. This doping effect in the AF ordered phase is quite
different from the peak-broadening of observed inelastic signal and the reductionof spin stiffness against doping in the SC
phase. These results suggest that the dynamical spin correlation start to degrade on
crossing the AF-SC phase boundary uponelectron doping.
References[1] B. Keimer et al.: Phys. Rev. B 46 (1992)14034.
[2] M. A. Kastner et al.: Rev. Mod. Phys. 70(1998)897.
[3] K. Yamada et al.: Phys. Rev. B 57 (1998)6165.
[4] M. Fujita et al.: Phys. Rev. Lett 101(2008)107003.

Count/6.6min

Pr1.4-xLa0.6CexCuO4
ω=6meV,T=10K
600(a) x=0(h 0 0)500
4000Count/6.4min

High transition temperature (high-TC )superconductivity arises when a sufﬁcientdensity of carriers is doped in a parent Mott insulator. Upon doping, longrange magnetic order disappears but dynamic antiferromagnetic (AF) spin correlations survive and coexist with the induced superconducitity[1]. Thus, AF spin
ﬂuctuations in a doped CuO2 plane arewidely believed to have a fundamental
connection with underlaying mechanismof high-TC superconductivity[2]. Indeed,
extensive neutron scattering experiments
on hole-doped (p-type) system have showna close connection between the magnetismand the superconductivity[3]. On the other
hand the study of spin ﬂuctuations in theelectron-doped (n-type) system is rather
limited. Although the existence of commensurate spin ﬂuctuations in the n-type
SC phase was clariﬁed by a comprehensive
neutron-scattering measurements[4], less isknown about the spin correlations in the
AF ordered phase, which is robust againstelectron-doping.
In order to clarify the nature of spin correlations in an electron-doped Mott insulator, we have performed neutron-scatteringexperiments on the Pr1.4− x La0.6 Cex CuO4
system with several electron concentrations. Figure 1 is the inelastic neutronscattering spectrum measured at ω=6 meV
and T=10 K for (a) x=0 (TN ∼180 K) and (b)x=0.08 (TN ∼100 K). Existence of spin ﬂuctuations around (1,0,0) position in the orthorhombic notation corresponding to (π,π) were conﬁrmed below 12 meV. No obvious effect of doping on the low energy spin
ﬂuctuations was observed and the spin-

300(b) x=0.08

200

0

0.9

1.0

1.1

h (r.l.u.)
Fig. 1. Constant-energy spectra with ω=6meV in
Pr1.4− x La0.6 Cex CuO4 measured at 10K for x=(a) 0(TN ∼180 K) and (b) 0.08 (TN ∼100 K).

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1-3-3

Uniaxial pressure induced magnetic phase of CuFe1−x Gax O2 ( x = 0.018)
T. Nakajima1 , S. Mitsuda1 , K. Takahashi1 , K. Yoshitomi1 , R. Kiyanagi2 , Y. Noda2 , N.
Aso3 , Y. Uwatoko4
1 Tokyo Univ. of Sci., 2 IMRAM of Tohoku Univ., 3 Univ. of the Ryukyus, 4 ISSP Univ. of Tokyo.
A triangular lattice antiferromagnet
CuFeO2 is known as a spin-lattice coupled system, in which magnetic phasetransitions are often accompanied by discontinuous changes in lattice constants[1].
This implies the possibility that the magnetic phase transitions can be controlled
by an application of pressure, whichmight result in ‘artiﬁcial’ changes in lattice
constants. In previous study, we have performed neutron diffraction measurements
on CuFe1− x Gax O2 (CFGO) with x = 0.018
under applied uniaxial pressure[2]. As
a result, we found that, at T = 2.5 K,
two small peaks assigned as (q, q, 32 ) and( 12 − q, 12 − q, 32 ) with q ∼ 0.205 coexists
with a large peak at ( 14 , 14 , 32 ) corresponding
to the 4-sublattice (4SL) magnetic ordering,which is the magnetic ground state of thissystem (see Fig. 1(b)). Temperature dependence of these incommensurate reﬂections
implies that a small fraction of screw-typemagnetic ordering, which originally shows
up only in the temperature range of 7
K < T < 9 K under zero pressure, wasretained by the application of the pressure,down to 2.5 K[2]. In the present study,
we have performed magnetic structure
analysis for the small incommensurate
magnetic reﬂections.
A single crystal CuFe1− x Gax O2 with x =0.018 was cut into thin plate with dimensions of ∼ 3×3×1 mm3 . We developed auniaxial pressure cell along the pioneering
work by Aso et al.[3]. Uniaxial pressure of
60 MPa was applied on the widest surface
normal to the [11̄0] direction, as shown in
Fig. 1(a), at room temperature. The neutron
diffraction measurements were performed
using the four-circle neutron diffractometer FONDER installed at JRR-3 in JAEA.
The incident neutron beam with wave-

length 1.240 Å was obtained by a Ge(311)monochromator. The sample in the pressure cell was mounted on a closed-cycle
He-gas refrigerator.
In Fig. 1(c), we show hkl-dependenceof the spin orientation factor (SOF) deﬁned
as | Fhkl |2 / f (q)2 , where Fhkl and f (q) aremagnetic structure factor and Fe3+ magnetic form factor, respectively. Comparisons between the calculated and the observed SOFs show that the magnetic structure corresponding to the small incommensurate magnetic reﬂections is a screw-type
structure, conﬁrming that the intermediatephase is retained by the application of thepressure, down to low temperatures. The
present result also suggests that the ‘ellipticity’ of the screw-type magnetic structure
is affected by the application of the uniaxial pressure. In order to elucidate more details of the magnetic orderings in this system under applied pressure, further investigation is required.
References[1] N. Terada et al.: PRB 75 224411(2007).
[2] K. Yoshitomi et al.: ISSP-NSL report.
[3] N. Aso et al.: JPCM 17 S3025 (2005).

Fig. 1. (a) Schematic drawing of the experimental
conﬁguration. (b) Diffraction proﬁle of (h, h, 32 ) reciprocal lattice scan at 2.5 K. (c) The hkl-dependenceof the observed SOFs.

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1-3-4

Hole-doping dependence of spin excitation in Bi2201 high-Tc cuprate system
M. Fujita1 , M. Enoki2 , Y. Ai2 , S. Iikubo3 and K. Yamada4
1 Institute for Material Research Center, Tohoku University, 2-1-1 Katahira, Sendai, 980-8577
2 Department of physics, Tohoku University, 6-3 Aramaki aza aoba, Sendai, 980-8578
3 Kyushu Institute of Technology, 2-4 Hibikino, Kitakyushu, 808-0196
4 WPI-AIMR, Tohoku University, 2-1-1 Katahira, Sendai, 980-8577

thermore, in the nearly optimal doped
Bi1.8 Pb0.2 Sr1.8 La0.2 CuO6+δ (Tc ∼34 K), on
well-deﬁned low-energy spin excitations
were detected. These results suggest thelow-energy spin excitation in Bi2201 drastically lose the spectral weight upon doping. This tendency is great different fromthe LSCO. The origin of the difference between the two systems is important to beclariﬁed for the uniﬁed understanding ofspin excitation in high-Tc cuprates.
References[1] J.M. Tranquada et al.: Nature 429, (2004)
534.
[2] S.M. Hayden et al.: Nature 429 (2004) 531.
[3] B. Fauque et al.: Phys. Rev. B 76 (2005)
214512.

Counts/21.6min. Counts/8.1min.

RCuO6+δ, ω=4 meVCounts/21.6min

Intensive neutron-scattering studies ofhigh-Tc superconductor reveal a close correlation between the magnetism and thesuperconductivity. For instance, the hourglass shaped dispersion of spin excitationis commonly observed in the superconducting phase of La2− x Srx CuO4 (LSCO),
YBa2 Cu3 O6+δ and Bi2 Sr2 CaCu2 O8+δ systems [1-3], suggesting an existence of universal nature of spin correlation in high-Tc
cuprate. However, due to a limited system
for the comprehensive study of the magnetism against hole-doping, the direct relation between the two is still less understood. Hence, we have started a systematical study of the spin excitations in the
one-layer Bi2 Sr2 CuO6+δ (Bi2201) system, inwhich the hole concentration can be widely
controlled by substituting Bi and/or Sr siteby other elements as well as LSCO system.
Figure 1 shows the spin excitation spectra measured at the constant-energy of ω=4
meV for Bi2+ x Sr2− x CuO6+δ x=0.4, 0.2 andBi1.8 Pb0.2 Sr1.8 La0.2 CuO6+δ samples. As isseen in Fig.1, we succeeded in observing
obvious development of the low-energy
excitation spectra in Bi2201 upon holedoping. In the lightly hole-doped x=0.4(non-superconducting sample), a broad
single peak was observed at Q=(π, π).
On the other hand, the superconducting x=0.2 sample exhibits incommensurate peaks split into [100]/[010] directionin the tetragonal notation. The incommensurability is 0.12 r.l.u., roughly corresponding to the hole concentration (∼0.11).
These results are similar to the LSCO in
qualitatively. The spectral intensity, however, in the superconducting sample isquite weak compared with that in LSCO
at comparable hole concentration. Fur-

300

(0.5 k 0)

200100(a) R=Bi2.4Sr1.6
T=40 K

0
600
500
400

(b) R=Bi2.2Sr1.8
T=70 K

0
700
600
500
0

(c) R=Bi1.8Pb0.2
Sr1.8La0.2, T=80 K

0

0.2

0.4

0.6

k (r.l.u.)

0.8

1Fig. 1.
Spin excitation spectrum inBi2.2 Sr1.8 CuO6+δ for (a) x=0.4, (b) 0.2 and (c)Bi1.8 Pb0.2 Sr1.8 La0.2 CuO6+δ at ω=4 meV.

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1-3-5

Inelastic Magnetic Scattering of Fe oxypnictide superconductors
S. Tatematsu, T. Moyoshi, Y. Yasui, M. Sato and K. Kakurai*
Dept of Phys., Nagoya Univ., *JAEA
To identify the origin of the superconductivity of Fe based systems, whose highest transition temperature Tc is ˜56 K, thedetermination of the symmetry of the superconducting order parameter is essentially important. On this issue, we havebeen experimentally studying the rate of
the Tc suppression by nonmagnetic impurities [1] and T dependence of the NMR
longitudinal relaxation rate [2], using socalled Ln1111 system LnFe1-yMyAsO1xFx (Ln=La, Nd; M=Co, Mn, Ru).
Theoretically, it has been predicted on thebasis of spin-ﬂuctuation mechanism of thepair formation that the symmetry is S-like,but unconventional in the sense that eventhough it does not have nodes of the order parameter, the two kinds of order parameter on the disconnected Fermi surfaces have opposite signs. We call it S?
symmetry. Although many experimental
data supporting this prediction were published, almost all of them cannot distinguish whether the sign change really exists
between the disconnected Fermi surfaces.
Actually, to experimentally prove this prediction, it is important to directly approach
this phase difference between the order parameters. One of the ways to do this is
to study the coherence factors, which usually reﬂects in various physical quantities
the relative phases of the order parameters. The coherence peak, which can be observed in the T dependence of the NMR
1/T1 of the ordinary S-symmetry superconductor is such an example. However,
we have to be careful, because if the damping of the quasi particles is large, the coherence peak cannot be seen, and because
this kind of large damping can be easily
expected for the present Fe based systems
with strong magnetic ﬂuctuations. Therefore, it is rather important to study themagnetic excitation spectra of the systems

in detail, as another quantity which reﬂects
the coherence factor directly.
Truly speaking, our results on the rate of
the Tc suppression by nonmagnetic impurities indicate rather rigidly that the sign difference between the order parameters on
the two disconnected Fermi surface is quite
unlikely, and it seems at this moment themost reliable experimental evidence on thesymmetry problem. Therefore, it seems tobe very urgent to see the magnetic excitation spectra in detail to establish the symmetry of the order parameter without any
uncertainty.
We have carried out neutron inelastic
scattering measurements to see the magnetic excitation spectra for polycrystalline
samples of LaFeAsO0.89F0.11 [3] andBa(Fe,Co)2As2 (Tc˜22 K), at the scatteringvector corresponding to the so-called (?,?)
point in the reciprocal space, and the data
are shown in Figs. 1(a) and 1 (b) at two
temperatures below and above Tc. We havealso been trying to prepare single crystals
large enough for the measurements. However, the Bragg reﬂection intensity shownin Fig 2 is not strong enough for the measurements, and now, we are making much
effort to prepare large crystals and/or toalign crystals obtained up to now. Our crystals were also used in the study of various
measurements. Figs. 3 and 4 show that themagnetic ﬁeld dependence of the speciﬁcheat C(T) can be described in a uniﬁed way,
showing that the system has no nodes.
references[1] M. Sato et al. J. Phys. Soc. Jpn. 79 (2010)
No. 1 014710-(1-10).
[2] Y. Kobayashi et al. J. Phys. Soc. Jpn. 78(2009) No. 7 073704 (1-4).
[3] T. Moyoshi et al. Physica C to be published. doi:10.1016/j.physc.2009.11.085.

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Fig. 1. Fig. 1. I/(n+1) ?E curves at Q˜1.1;(a) LaFeAsO0.89F0.11 and (b) Ba(Fe0.9Co0.1)2As2(Tc˜22 K). Fig. 2. ω-scan proﬁle of 002 nuclear reﬂection of a Ba(Fe0.9Co0.1)2As2 crystal. Fig. 3. C/T ?T2
curves. Fig. 4. Δ C(≡ C(T,H)-C(T,0)) ? TH curves.

1-3-5- 94 -

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1-3-6

Investigation of 4 f electronic state and atomic vibration in rare-earth based
compounds by neutron scattering
K. Iwasa1 , K. Saito1 , R. Igarashi1 , H. Kobayashi1
Tohoku Univ.1
Electronic and vibrational states of ﬁlled
atoms in cage-like structures have been attractive. Such structure can enhance electronic hybridization between ﬁlled ionsand surrounding ligands, and the ﬁlled ion
motion with large amplitude may couple
with the electronic state. We have investigated such properties in the rare-earth
ﬁlled skutterudites. In addition to thesestudies, we have studied following subjects
in FY2009.
(a) Crystal-ﬁeld excitation and multipolar ordering in Pr(Ru1− x Rhx )4 P12
Spontaneous ordering of higher-rank multipoles of 4 f electrons has been detected in various rare-earth based materials. PrRu4 P12 is one of typical systems,
exhibiting the antiferro-type hexadecapolar (rank-4 multipolar) ordering below themetal-nonmetal transition at 63 K (T. Takimoto: J. Phys. Soc. Jpn. 75 (2006) 034714).
It should be notable that the ordering ischaracterized by the crystal ﬁeld excitations exhibiting the strong temperature dependence in accordance with the evolution of the multipolar order parameter (K.
Iwasa et al.: Phys. Rev. B 72 (2005) 024414).
The substitution of Rh to Ru gives rise to
suppress of metal-nonmetal transition (C.
Sekine et al.: Physica B 378-380 (2006) 211).
Thus, a study of the doping effect leads tounderstand the ordered phase of PrRu4 P12 .
We have carried out inelastic scattering experiments to measure crystal-ﬁeld excitation of Pr(Ru1− x Rhx )4 P12 .
We have performed experiments using
the triple-axis spectrometers TOPAN(6G) for polycrystalline sample ofPrevious studies
Pr(Ru0.99 Rh0.01 )4 P12 .
revealed that the Rh doping systems (x= 0.03, 0.05, 0.10 and 0.15) shows the
crystal ﬁeld excitations at 2.4 and 13 meVwhose peak positions do not show any

temperature dependence, in addition to
the strongly temperature dependent ones
as observed in PrRu4 P12 . The most recent
measurement for x = 0.01 performed at
HER also shows the same temperatureindependent excitation peak. The peak
appearing in the Rh doped systems indicates that some Pr ions does not contributeto the ordering. We carried out the inelastic
measurements in thermal neutron range.
The strong temperature-dependent peak
was observed around 9 meV, which is
identiﬁed as that in the pure PrRu4 P12 .
Thus, Rh 1% sample is consistent with theaforementioned separation of ordered anddisordered regions in the sample crystals.
(b) Rare-earth atomic vibrations in hexaborides RB6
RB6 is composed of a hard frame of boron
atoms and rare-earth ions ﬁlled inside.
Among them, Gd ions in GdB6 exhibit
larger thermal vibration amplitude, so thatit can be categorized into the so-called rattling systems. This material has been famous for the simultaneous magnetic andstructural phase transition with the distinct
two transition temperatures at TN = 16 K
and T∗ = 9 K (K. Kuwahara et al.: Physica B 359-361 (2005) 965, R. M. Galera etal.: J. Appl. Phys. 63 (1988) 3580). At TN ,the magnetic ordering characterized by thewave vector qM = (1/2, 1/4, 1/4) and thestructural superlattice by q1 = (1/2, 0, 0)
appear. The latter is expected to be givenby the displacement of Gd ions, due tomagnetoelastic-type interaction (M. Amara
et al.: Phys. Rev. B 72 (2005) 064447).
We performed inelastic x-ray (BL35XU at
SPring-8) and neutron (6G TOPAN at JRR3) scattering experiments for GdB6 andYbB6 , respectively. The latter compound isnonmetallic and nonmagnetic, in contrast

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JAEA-Review 2013-040

to the typical RKKY-type magnet GdB6 , so
it was measured as a reference material.
The dispersion relation curve of the longitudinal acoustic mode propagating along
the simple cubic [100] axis shows the maximum energy around the wave vector q =(0.25, 0, 0), and it bends down with approaching the Brillouin zone boundary.
The lower-energy zone-boundary mode at
q1 = (1/2, 0, 0) corresponds to the structural modulation in the ordered phase. Theenergy of this mode is 75% of the maximum value on the branch at 300 K and further decreases by 10% with decreasing temperature down to TN , so that this phononmode softens considerably far above thetransition temperature. On the other hand,
the reference material YbB6 does not showsuch softening. The observation indicates astrong electron-phonon coupling in GdB6 ,which is expected to be magnetoelastictype interaction between 4 f states and displacement of Gd ions.

suggested antiferromagnetic ordering was
conﬁrmed, and the ground state is thought
to be magnetic as proposed by previous paper. In inelastic scattering measurement,
clear crystal-ﬁeld excitation peaks are observed. Considering the cubic point symmetry at Pr sites, four eigenstates are expected. The observed results of intensities as well as excitation energies imply that
all the states locate in the excitation energy
range less than 10 meV. Such small crystalﬁeld level split may support ﬂuctuationof electronic state mediated by hybridization between 4 f and conduction electrons.
In addition, a broad response is also seenin the spectrum. Although its origin has
not been clariﬁed yet, PrCu4 Au may takedouble features of itinerant and localized felectrons.

1-3-6(c) Heavy-electron material with 4 f 2
state in PrCu4 Au
Recently, the group of Univsersity of
Toyama reported the succeeding synthesis of PrCu4 Au and a characteristic heavyelectron properties (S. Zhang et al.: J.
Phys.: Condens. Matter 21 (2009) 205601).
They also suggest antiferromagnetic ordering below 2 K from the magnetic susceptibility and speciﬁc heat measurements. The
heavy fermion with f 2 electronic state provided by Pr or U ions have been discussed
in terms of quadrupolar Kondo effect, dual
nature of itinerant and localized f electrons, and effect of quasi-degeneracy of acrystal-ﬁeld singlet-triplet scheme. Thus,
we started to investigate the microscopic
electronic state in PrCu4 Au.
A polycrystalline sample was grown by
arc-melting method, and neutron scattering experiment was carried out at 6G
TOPAN using 1 K and 10 K refrigerators.
We succeeded in detecting the magnetic
ordering below about 2 K with a propagation vector q = (1/2, 1/2, 1/2) in
MgCu4 Sn-type cubic structure (F4̄3m). The- 96 -

JAEA-Review 2013-040

1-3-7

Crystal structure and Magnetic Property of Prx Fe4 Sb12
K. Iwasa1 , T. Orihara1 , Y. Murkami1 ,K. Kuwahara2 , H. Sugawara3
Tohoku Univ.1 , Ibaraki Univ.2 , Kobe Univ.3(2007) 103704) but also of the x < 1 sample reported by E. Bauer et al. (J. Magn.
Magn. Mater. 310 (2007) 286) . Therefore,
it is still under controversial that the magnetic nature of 4 f electrons localized at Pr
ions does not strongly depend on the Pr
ion concentration or not. We are now trying to analyze the intensity to discuss the
crystal ﬁeld level schemes and their roleon the magnetic ordering. In the Experiment at FONDER, we succeeded in observing many reﬂections that is expected to allow the crystal structure determination (Prconcentration). In addition, the increase offundamental reﬂection intensities with decreasing temperature thorough the transition temperature. This results is consistent
with the previous study, and the magnetic
ordering pattern is composed of ferromagnetic component. However, the magnetic
ordering signal depends on samples. We
will carry out a subsequent measurementwith longer wave length setup of FONDER
to focus the low-Q magnetic intensities.
70

Counts / 1200 MN (~2 min)140

PrFe4Sb12 (high-pressure synthesis)
6G, kf =2.5525, B-M-60-S-PGF-60-A-30
Q = 3.0 (2π/a)
3.5 K
Pr
La

60

50

120
100

40

80

30

60

20

40

10

0
-2

Counts / 120 MN (~12 sec) (elastic position)

Rare-earth ﬁlled skutterudite compounds have been studied for various
phase transitions of 4 f electron states.
Prx Fe4 Sb12 has been considered to exhibit
magnetic ordering at around 4 K. It issuggested that not only Pr 4 f but also
Fe 3d electrons give the ordered moment(N. P. Butch et al.: Phys. Rev. B 71 (2005)
214417), since the magnitude of effective
magnetic moment estimated from thehigh temperature magnetic susceptibility
is larger than that of Pr3+ free ion. The
ordered structure of the two kinds of magnetic moments depending on the Pr ﬁllinghas been unsolved yet. It is notable that themagnetic phase transition is reported todisappear in case of full occupation of the
Pr-ion sites (x = 1). The effect of Pr ﬁllingto the magnetic ordering has also not been
explained.
We performed neutron scattering experiment using the triple-axis spectrometer TOPAN (6G) in order to reveal Prion crystal ﬁeld levels by using powderedsimple and the four-circle diffractometer
FONDER (T2-2) to investigate the crystal
and magnetic ordered structures by using a single crystalline sample. In thisyear, we measured crystal ﬁeld levels in
the high-pressure synthesis sample, in order to compare that in the unﬁlled sample by the so-called Sb-self method. The
sample for FONDER was synthesized by
the ﬂux method, and the Pr concentration x is expected to be less than unity(x = 0.7 − 0.9), as was reported in theprevious reports.
Figure shows inelastic spectra observed
at TOPAN. We succeeded in observing two
magnetic excitation peaks at 2.4 and 11
meV. The peak positions are almost equivalent with those of the x 1 one synthesized by K. Tanaka et al. using the highpressure method (J. Phys. Soc. Jpn. 76

20

0

2

4

6

8

10

12

14

0
16

Energy [meV]Fig. 1. Magnetic excitation spectra of Prx Fe4 Sb12
synthesized by the high-pressure method andLax Fe4 Sb12 at 3.5 K.

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1-3-8

Magnetic Excitations of CeRh1-xCoxIn5
M. Yokoyama(A), Y. Ikeda(B), D. Nishikawa(B), H. Amitsuka(B), K. Tenya(C)(A)Faculty of Science, Ibaraki University, (B)Graduate School of Science, Hokkaido University,(C)Faculty of Education, Shinshu University
The relationship between antiferromagnetic (AF) and superconducting (SC) orders
in CeRh1-xCoxIn5 (HoCoGa5-type tetragonal structure) has been intensively investigated in recent years [1-5]. It is foundthat the transition temperature TN of theincommensurate-AF order (the propagation vector: qh=(1/2, 1/2, 0.297)) seen inpure CeRhIn5 is weakly reduced by doping Co, and then approaches zero at thequantum critical point: xc ˜ 0.8. At thesame time, the SC phase develops abovex ˜ 0.4. The neutron scattering experiments
revealed that a commensurate AF orderwith a modulation of qc1=(1/2, 1/2, 1/2)
appears in the intermediate x range [2-4].
These results suggest that the nature of the
AF correlation varies by doping Co, andit may signiﬁcantly affects the evolution of
the SC order. To clarify the magnetic instability involved in small and rich Co concentrations, we have investigated the characteristics of magnetic excitations for CeRh1xCoxIn5 by performing the inelastic neutron scattering experiments.

We have observed that clear enhancementsof the inelastic neutron scattering signals
for the surveyed (1/2, 1/2, xi) line (0.5 <=xi <= 1) in the reciprocal space at 0.7 K.
Both the magnitude and center (˜ 0.4 meV)of inelastic peaks are roughly independentof xi. The inelastic peaks are reduced withincreasing temperature, but still observed
above TN = 3.7 K. These features are consistent with those reported for pure CeRhIn5 [6]. Our INS experiments for the samples with other Co concentrations are now
in progress.
[1] V.S. Zapf et al., Phys. Rev. B 65, 014506(2001).
[2] M. Yokoyama et al., J. Phys. Soc. Jpn. 75,
103703 (2006).
[3] S. Ohira-Kawamura et al., Phys. Rev. B
76, 132507 (2007).
[4] M. Yokoyama et al., Phys. Rev. B 77,
224501 (2008).
[5] Swee K. Goh et al., Phys. Rev. Lett. 101,
056402 (2008).
[6] N. Aso, NSL-ISSP activity report, report#227 (2007).

Single crystals of CeRh1-xCoxIn5 weregrown by the In-ﬂux technique. In accordance with the previous investigations [4],the Rh/Co concentrations x in the samples were checked by means of the electron probe microanalysis (EPMA) measurements, and we adopt the x values estimated from the EPMA measurements inthis study. The samples with x ˜ 0.3 were arranged so that the scattering plane becomes(hhl), and cooled down 0.7 K in a 3He cryostat. The inelastic neutron scattering (INS)experiments were performed on the tripleaxis spectrometers ISSP-GPTAS (4G) and
ISSP-HER (C1-1) located at the research reactor JRR-3M of JAEA, Tokai.

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1-3-9

Phonon dynamics of iron-based superconductors
C. H. Lee(A), K. Kihou(A), K. Horigane(B), H. Eisaki(A), A. Iyo(A), M. Braden(C) andK. Yamada(B)(A) AIST, (B) WPI Tohoku Univ., (C) Universitat zu Koln
Since the discovery of Fe-based superconductors with superconducting transition temperatures (Tc) of up to 55 K, intensive studies have been conducted toclarify the mechanism of Cooper pair formation. For example, the possibility ofphonon-mediated superconductivity has
been studied intensively. Calculations using the density functional perturbation theory, however, revealed very weak electronphonon coupling constants, suggesting
that, within those simpliﬁed models, conventional phonon-mediated superconductivity is unlikely. Nevertheless, a mechanism involving phonons remains possible. Studies on phonon dynamics using
single crystals are essential for elucidating
the role of phonons in the appearance of superconductivity in Fe-based superconductors.
We found that phonon softening occurs
under K doping in Ba1-xKxFe2As2 using
inelastic X-ray scattering technique [1]. To
clarify whether this softening is a universal phenomenon in Fe-based superconductors, it is essential to study in other samples. In this study, therefore, we measured
phonon dynamics of Ba(Fe1-xCox)2As2 using inelastic neutron scattering technique.
Neutron scattering measurements werecarried out using a triple-axis spectrometer, TOPAN at the JRR-3 reactor of JAEA
at Tokai. The ﬁnal neutron energy was
ﬁxed at Ef=14.8 meV using a pyrolytic
graphite (PG) monochromator and analyzer. The sequences of horizontal collimators were 40’-60’-S-60’-B where S denotes
the sample position. A single crystal of
Ba(Fe1-xCox)2As2 was grown by the selfﬂux method using excess FeAs. All measurements were conducted at room temperature.
We measured phonon dispersion along[100] and [110] directions. Phonon dispersion was analyzed using a Born-vonKarman force-constant model. The longitudinal and transverse force constants of
11 atomic pairs were chosen as ﬁtting parameters, and the calculated energies wereﬁtted to the measured data. As results
we could not ﬁnd any difference between
non-doped BaFe2As2 and superconducting Ba(Fe1-xCox)2As2. The softening canbe observed only in K doping samples.
This suggests that the softening in Ba1xKxFe2As2 is due to reduction of interatomic force constants around (Ba,K) sites
caused by substitution of divalent Ba by
monovalent K ions.
[1] C. H. Lee et al., J. Phys. Soc. Jpn. 79,
014714 (2010).

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1-3-10Relationship between crystal structure and superconductivity in iron-based
superconductors
C. H. Lee(A), K. Kihou(A), H. Eisaki(A), A. Iyo(A), M. Braden(B) and K. Yamada(C)(A) AIST, (C) Universitat zu Koln, (B) WPI Tohoku Univ.
Recent discovery of superconductivity in
LaFeAsO1-xFx at superconducting temperature of Tc=26K has triggered the energetic
study of searching a new superconductor. Soon, it has been found that ﬂuorinefree LnFeAsO1-y (Ln=lanthanoid) samples
show superconductivity with maximum
Tc=55K. As the Tc is very high, their cooper
pairing mechanism could not be explainedby the conventional BCS theory. To elucidate the mechanism, their crystal structure
should be determined.
The crystal structure of LnFeAsO is characterized by two kinds of stacking layers
LnO and FeAs. The Fe atom is surroundedby four As atoms in the FeAs layer forming
a FeAs4 tetrahedron. Charges are transferred from LnO to FeAs layers by substitution or introduction of defect of oxygen
atoms. We focus our attention on crystal
structure of FeAs layers, since superconductivity is induced in FeAs layers.
We conducted neutron diffraction measurements at HERMES of the Institute forMaterials Research, Tohoku University, installed at the JRR-3 reactor of JAEA at
Tokai. The obtained spectra were analyzed
by the Rietveld method. Polycrystalline
samples of LnFeAsO1-y (Ln=La, Ce, Pr,
Nd, Tb and Dy) were used for the measurements.
We have clariﬁed the superconducting phase diagram of LaFeAsO1-y and
NdFeAsO1-y by estimating the oxygen
content. Both systems show superconductivity above y˜0.06. But, doping dependence of Tc is different. In LaFeAsO1-y, Tc
attains maximum values at around y=0.12
and decreases with increasing y. Whereas
in NdFeAsO1-y, Tc increases till y=0.26. It
seems that there is no universal relationship between Tc and carrier concentration.
Figure 1 shows As-Fe-As bond angle as

a function of Tc in various pnictide superconductors [1]. The parameters of the samples showing almost maximum Tc in eachsystem are selected to eliminate the effectof carrier doping. The obtained lanthanoid
dependence of crystal structure parametersin LnFeAsO1-y system shows that FeAs4tetrahedrons form a regular shape around
NdFeAsO1-y. Obviously, Tc becomes maximum when FeAs4-tetrahedrons form aregular shape, indicating that there is astrong correlation between crystal structure and superconductivity.
[1] C. H. Lee et al., J. Phys. Soc. Jpn. 77,
083704 (2008).
[2] C. H. Lee et al., J. Phys. Soc. Jpn. 77, 44(2008) Suppl. C.

Fig. 1. Tc vs As-Fe-As bond angle α for various
pnictide superconductors. Crystal structure parameters of samples exhibiting maximum Tc in eachsystem are plotted. The vertical dashed line indicates the bond angle of a regular tetrahedron (α =109.47).

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1-3-11Substituting dependence of the ordered moment in BaFe2(As,P)2
S. Ibuka, K. Matan and T. J. Sato
NSL, ISSP, University of Tokyo and JST-TRIP
One major difference between conventional and high-Tc-cuprate superconductors is the proximity to a competing magnetically ordered state in the latter, and it
has long been believed that magnetic ﬂuctuations could replace the role of phonons
in mediating an electronpairing interaction. This mechanism could give rise to
more tightly bound Cooper pairs, elevating
the transition temperature. The recent discovery of iron pnictide superconductors [1]with Tc exceeding 50 K [2] in close proximity to antiferromagnetic order reinvigorates
this idea.
BaFe2As2 is one of the parent compounds of iron pnictide superconductors,
which shows antiferromagnetic transition
at TN = 140 K. In the early reports, it
was shown that the transition temperature
was suppressed by carrier doping and superconductivity was induced in the proximity to the vanishing point of the magnetic transition as the case of hole dopingin (Ba,K)Fe2 As2 [3] and electron doping in
Ba(Fe,Co)2 As2 [4]. After that, a novel report [5] came in which showed the superconductivity at Tc = 30 K induced by isovalent substitution in BaFe2 (As0.68 P0.32 )2 .
The report has modiﬁed our common
knowledge that varing the electron density is one of the essential way to break themagnetic stability. In this system, we may
obtain experimental information which is
kept away from the effect of carrier change
and the data will become a desirable source
to discuss the mechanism of the superconductivity theoretically in detail. Substituting dependency of the size of the orderedmoment and the temperature developmentof it in the antiferromagnetic phase are basical physical quantities to study the role ofmagnetism in the superconductivity.
Then we made three powder samples of
BaFe2 (As1−x Px )2 ( x = 0.06, 0.15, 0.35) andhave performed the magnetic elastic neutron scattering study at ISSP-GPTAS the
triple-axis spectrometer. The samples weremade by solid phase reaction at 1323 K
for more than 72 h in an electric furnace.
The data shown in Fig. 1 is a temperaturedependence of the peak intensity at antiferromagnetic position Q = (103)Orth takenwith Ei = 14.7 meV and the collimationof 40’-PG-40’-S-40’-PG-Open in a doubleaxis mode. For x = 0.06 and 0.15, antiferromagnetic transition was observed at
T ∼ 125, 90 K respectively. On the other
hand, for x = 0.35, only which shows superconductivity in the three samples, intensity increase was not observed in the accuracy of this experiment. At lowest temperature (T = 3 K), intensity increse was notobserved even in other Q positions, either.
From these results, we found that the ordered moment was certainly suppressed by
P substitution, and it was completely suppressed and vanished at x = 0.35 superconductor at all.
[1] Y. Kamihara et al., J. Am. Chem. Soc. 130, 3296 (2008).
[2] R. Zhi-An et al., Chinese Phys. Lett. 25, 2215 (2008).
[3] M. Rotter et al., Phys. Rev. Lett. 101, 107006 (2008).
[4] A. S. Sefat et al., Phys. Rev. Lett. 101, 117004 (2008).
[5] S. Jiang et al., J. Phys.: Cond. Mat. 21, 382203 (2009).

Fig. 1. Temperature dependence of magnetic intensity at Q =(103).

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JAEA-Review 2013-040

1-3-12Competition or coexistence of multiple order parameters in the heavy fermion
antiferromagnet CeRh1−x Irx In5
K. Deguchi1 , N. Aso2 , K. Wakishima1 , Y. Ishikawa1 , Y. Maeda1 , N. K. Sato1 , H.
Yoshizawa3
Nagoya Univ.1 , Univ. of the Ryukyu2 , NSL-ISSP, Univ. of Tokyo.3
The heavy-fermion family of CeMIn5 ,where M represents Ir, Co, or Rh, has attracted much interest on account of the relationship between superconductivity andmagnetism. CeCoIn5 and CeIrIn5 are superconductors with SC transition temperatures of Tc = 2.3 and 0.4 K, respectively. CeRhIn5 orders in an incommensurate antiferromagnetic phase with themodulation of q = (1/2, 1/2, 0.297) below TN = 3.8 K [1]. Interestingly, a
new commensurate antiferromagnetic order with q = (1/2, 1/2, 1/2) was foundin a x-range of 0.25-0.6 for CeRh1− x Irx In5 ,and these two commensurate and incommensurate magnetic orders coexist with superconductivity [2]. A similar coexistence
was also reported in CeRh0.6 Co0.4 In5 [3].
Such an unusual coexistence of three different types of cooperative ordered states isquite unique among unconventional superconductors. However, for consideration of
results in the CeRh1− x Cox In5 system, it isunder debate if there is a coexistence regionof the commensurate and incommensurateorders in a phase diagram [3, 4]. To elucidate the mechanism of the unconventional
superconductivity in the CeMIn5 systems,
therefore, it is important to examine theirmagnetic properties in more detail.
The key of this work is to reduce the inhomogeneity arising from a distribution ofx because our preliminary results of thermodynamic experiments using single crystals of CeRh1− x Irx In5 showed that the inhomogeneity may mislead us to an incorrectunderstanding of a phase diagram of thesystem. To avoid this, we intentionally prepared powdered polycrystalline samples of
CeRh0.6 Ir0.4 In5 by melting single crystalsof CeRhIn5 and CeIrIn5 with a tetra-arc
furnace under a high-purity argon atmo-

sphere. The sample was put in a vanadium can with double-cylinder structure,and cooled down to 0.7 K using a 3 He cryostat [5]. Neutron diffraction experiments
were performed at ISSP/GPTAS installedin the research reactor JRR-3.
Figure 1 shows powder pattern of
CeRh0.6 Ir0.4 In5 at T = 0.75 K (< TN )and 10 K (> TN ), obtained at GPTAS
with the incident energy Ei ∼ 13.7 meV.
We have found the Bragg reﬂection atan commensurate reciprocal point q =(1/2, 1/2, 1/2) below TN , which are trulyof magnetic origin since they disappear
above TN . It is noteworthy that an incommensurate magnetic order at reciprocal point q = (1/2, 1/2, 0.297) could not be
detected within experimental resolutions,in contrast to previous studies with single
crystals [2]. To clarify coexistence of different types of cooperative ordered states
an mechanism of the unconventional superconductivity in the CeMIn5 systems, We
now try to investigate other CeRh1− x Irx In5
with polycrystalline samples. Figure 1
shows a powder pattern of CeRh0.6 Ir0.4 In5
at T = 0.75 and 10 K, obtained at GPTAS
with the incident energy Ei ∼ 13.7 meV.
According to a previous report [2], theNéel temperature is about 3.6 and 2.6 K
for the incommensurate and commensurate order, respectively. We have found the
Bragg reﬂection at the commensurate reciprocal point q = (1/2, 1/2, 1/2), which
are truly of magnetic origin since it disappears above TN ∼ 2.7 K. It is noteworthy
that the incommensurate magnetic order atreciprocal point q = (1/2, 1/2, 0.297) was
not detected within experimental resolutions. This result seems contrary to the previous neutron scattering experiments withsingle crystals [2], but consistent with our

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
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JAEA-Review 2013-040

thermodynamic experiments.
To clarify the coexistence of the different types of cooperative ordered states andto reveal the mechanism of the unconventional superconductivity in the CeMIn5
systems, a further experiment is in progressfor other compositions of CeRh1− x Irx In5 .
References[1] P. G. Pagliuso et al., Phys. Rev. B 64, 100503(2001).
[2] A. D. Christianson et al., Phys. Rev. Lett. 95,
217002 (2005).
[3] M. Yokoyama et al., J. Phys. Soc. Jpn. 75,
103703 (2006).
[4] S. Ohira-Kawamura et al., Phys. Rev. B 76,
132507 (2007).
[5] TAIYO NIPPON SANSO CORPORATION. Tokyo 142-8558, Japan.

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Fig. 1. Powder pattern of CeRh0.6 Ir0.4 In5 obtained at
T = 0.75 and 10 K.



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JAEA-Review 2013-040

1-3-13Pressure-induced release of magnetic frustration in a quasi-kagome lattice YbAgGe
K. Umeo1 , H. Kubo2 , T. Onimaru2 , K. Katoh3 , N. Aso4 and T. Takabatake2
1 Cryogenics and Instrumental Analysis Division, N-BARD, Hiroshima Univ.,
1-3-1 Kagamiyama, Higashi-Hiroshima, 739-8526
2 Department of Quantum Matter, ADSM, Hiroshima Univ.,
1-3-1 Kagamiyama, Higashi-Hiroshima, 739-8530
3 Department of Applied Physics, National Defense Acadeny, Yokosuka, 239-8686
4 Institute for Solid State Physics, The University of Tokyo, 106-1 Shirakata, Tokai, 319-1106
The heavy-fermion antiferromagnet
YbAgGe with the ZrNiAl-type structure
undergoes two magnetic transitions at TM1= 0.8 K with a propagation vector k1 =[0, 0, 0.324] and TM2 = 0.65 K with k2 =[1/3, 0, 1/3].[1, 2] A tail in the speciﬁc-heat
C ( T ) extended above TM1 was attributed
to effects of magnetic frustration inherent to the quasi-Kagome lattice of theYb sublattice.[1] Recently, an anomalous
phase diagram of YbAgGe under pressures
has been constructed from the C ( T ) andresistivity measurements.[3, 4] For P > 0.5
GPa, the two transitions at TM1 and TM2merge to one transition at TM .[3] For 0.5< P < P∗ = 1.6 GPa, TM remains constant,while TM increases linearly above P∗ . The
magnetic entropy at TM rises for P > P∗ ,while the Kondo temperature does notchange.[4] These ﬁndings suggest thatthe sudden rise of TM (P) for P > P∗ is aconsequence of the release of the magnetic
frustration.
In the present work, in order to determine magnetic structures at ambient pressure, we performed neutron diffraction experiments. Measurements were preformed
on a single crystalline sample prepared by
the Bridgman method. It was cooled down
to 35 mK with a 3 He-4 He dilution refrigerator.
Fig. 1 shows the temperature dependence of the integrated intensity of themagnetic peaks at Q = (2/3, 0, 1/3) and (1,0, 0.327). The intensity of the peak at (1,0, 0.327), which includes background contribution, appears at 0.82 K (> TM1 ) andshows a maximum at 0.65 K (= TM2 ). Below

the temperature, the intensity of the peakat (1, 0, 0.327) rapidly decreases, while theintensity of the peak at (2/3, 0, 1/3) starts
increasing at 0.65 K (= TM2 ) and saturates
below 0.6 K. Between 0.6 K and 0.65 K boththe peaks were observed, indicating thatthe transition at TM2 is of ﬁrst order.
In TM2 < T < TM1 , the magnetic structure
was determined by the model proposedby the group theory. This structure has a
distorted 120◦ one on the c plane, where
the moments are modulated along the caxis. This magnetic structure is characteristic feature of the magnetic frustrated compounds. We are now in progress to analyse
the data to determine the magnetic structure below TM2 .
References[1] K. Umeo et al.: J. Phys. Soc. Jpn, 73(2004)537.
[2] B. Fåk et al.: Physica B 378-380 (2006)669.
[3] K. Umeo et al.: Physica B 359-361 (2005)130.
[4] H. Kubo et al.: J. Phys. Soc. Jpn, 77(2008)023704.

Fig. 1. T dependence of the integrated intensity ofthe magnetic peaks at Q=(2/3, 0, 1/3) and (1, 0,0.327). The dotted lines are guides to the eye.

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JAEA-Review 2013-040

1-3-14Magnetic structure of Nd1/3Sr5/3MnO4
Y. Oohara, M. Kubota and H. Kuwahara
ISSP, Univ. of Tokyo, PF KEK and Fac. of Sci. & Tech, Sophia Univ.
Orbital order brings about complex magnetic order in manganite compounds. In Nd1/4Mn7/4MnO4, the linear
orbital order exhibits, which is responsible for the linear ferromagnetic chain order. There are Bragg intensities at (1/2 0
1/2) and identical points to that. On theother hand, the zig-zag orbital order exhibits in Nd1/3Mn5/3MnO4. Thus, we expect the different-type of magnetic order of
Nd1/4Mn7/4MnO4.
Neutron Diffraction measurements were
performed with ISSP triple-axis spectrometers, HQR at T11 and HER at C11.
Figure shows powder diffraction patterns ofd1/3Mn5/3MnO4. The magnetic
signal shows diffuse-like shape. There are
peaks near (1/2 0 0), (1/2 0 1), and (1/2 0 2).
It demonstrates that the magnetic order is
two dimensional and the similar magnetic
structure as Nd1/4Mn7/4MnO4 in the cplane, but becomes incommensurate order,
which the frustration originated from theorbital zig-zag order may be responsible
for.

Fig. 1.
Powder diffraction
Nd1/3Mn5/3MnO4 at 4K.

patternofActivity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
Report Number: 1186

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JAEA-Review 2013-040

1-3-15Competition or coexistence of multiple order parameters in the heavy fermion
antiferromagnet CeRh1−x Irx In5
K. Deguchi1 , N. Aso2 , K. Wakishima1 , Y. Ishikawa1 , Y. Maeda1 , N. K. Sato1 , H.
Yoshizawa3
Nagoya Univ.1 , Univ. of the Ryukyu2 , NSL-ISSP, Univ. of Tokyo.3
The heavy-fermion family of CeMIn5 ,where M represents Ir, Co, or Rh, has attracted much interest on account of the relationship between superconductivity andmagnetism. CeCoIn5 and CeIrIn5 are superconductors with SC transition temperatures of Tc = 2.3 and 0.4 K, respectively. CeRhIn5 orders in an incommensurate antiferromagnetic phase with themodulation of q = (1/2, 1/2, 0.297) below TN = 3.8 K [1]. Interestingly, a
new commensurate antiferromagnetic order with q = (1/2, 1/2, 1/2) was foundin a x-range of 0.25-0.6 for CeRh1− x Irx In5 ,and these two commensurate and incommensurate magnetic orders coexist with superconductivity [2]. A similar coexistence
was also reported in CeRh0.6 Co0.4 In5 [3].
Such an unusual coexistence of three different types of cooperative ordered states isquite unique among unconventional superconductors. However, for consideration of
results in the CeRh1− x Cox In5 system, it isunder debate if there is a coexistence regionof the commensurate and incommensurateorders in a phase diagram [3, 4]. To elucidate the mechanism of the unconventional
superconductivity in the CeMIn5 systems,
therefore, it is important to examine theirmagnetic properties in more detail.
The key of this work is to reduce the inhomogeneity arising from a distribution ofx because our preliminary results of thermodynamic experiments using single crystals of CeRh1− x Irx In5 showed that the inhomogeneity may mislead us to an incorrectunderstanding of a phase diagram of thesystem. To avoid this, we intentionally prepared powdered polycrystalline samples of
CeRh0.6 Ir0.4 In5 by melting single crystalsof CeRhIn5 and CeIrIn5 with a tetra-arc
furnace under a high-purity argon atmo-

sphere. The sample was put in a vanadium can with double-cylinder structure,and cooled down to 0.7 K using a 3 He cryostat [5]. Neutron diffraction experiments
were performed at ISSP/GPTAS installedin the research reactor JRR-3.
Figure 1 shows a powder pattern of
CeRh0.6 Ir0.4 In5 at T = 0.75 and 10 K, obtained at GPTAS with the incident energy
Ei ∼ 13.7 meV. According to a previous
report [2], the Néel temperature is about
3.6 and 2.6 K for the incommensurate andcommensurate order, respectively. We havefound the Bragg reﬂection at the commensurate reciprocal point q = (1/2, 1/2, 1/2),
which are truly of magnetic origin since itdisappears above TN ∼ 2.7 K. It is noteworthy that the incommensurate magnetic order at reciprocal point q = (1/2, 1/2, 0.297)
was not detected within experimental resolutions. This result seems contrary to theprevious neutron scattering experimentswith single crystals [2], but consistent with
our thermodynamic experiments.
To clarify the coexistence of the different types of cooperative ordered states andto reveal the mechanism of the unconventional superconductivity in the CeMIn5
systems, a further experiment is in progressfor other compositions of CeRh1− x Irx In5 .
References[1] P. G. Pagliuso et al., Phys. Rev. B 64, 100503(2001).
[2] A. D. Christianson et al., Phys. Rev. Lett. 95,
217002 (2005).
[3] M. Yokoyama et al., J. Phys. Soc. Jpn. 75,
103703 (2006).
[4] S. Ohira-Kawamura et al., Phys. Rev. B 76,
132507 (2007).
[5] TAIYO NIPPON SANSO CORPORATION. Tokyo 142-8558, Japan.

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
Report Number: 1190

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JAEA-Review 2013-040.
.


-55*37$6
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Fig. 1. Powder pattern of CeRh0.6 Ir0.4 In5 obtained
at T = 0.75 and 10 K. Arrows show the expected
Bragg-peak positions of incommensurate and commensurate antiferromagnetic orders.



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JAEA-Review 2013-040

1-3-16

Pressure induced superconductivity in SrFe2As2
K. Munakata(A,C), S. Ibuka(B, C), H. Ishida(B,C), K. Matan(B, C), K. Ohgushi(A, C), M.
Nishi(B), Y. Uwatoko(A,C), T. J. Sato(B, C)(A) ISSP, (B) ISSP-NSL, (C) TRIP-JST
In 2008, a group in Japan reported high-Tc
superconductivity in the Fe-based layeredmaterial LaFeFAsO [1]. Since then, a boomof the superconductivity research has been
continuing all over the world to date. Soon
after the discovery, it was found that the superconducting phase is situated in vicinityof the antiferromagnetically ordered phase,
which suggests a close relation between
the superconductivity and antiferromagnetic ﬂuctuation, as has been suggested in
the cuprate superconductors. For such acase, it is crucial to know if the superconducting phase can coexist with the antiferromagnetic phase or not. To date, however,this is not clear, since most of the phase
diagram studies have been carried out inthe carrier doped systems, where chemical inhomogeneity is inevitable. We therefore perform neutron diffraction study under hydrostatic pressure, where such chemical inhomogeneity is absent in principle.
The neutron diffraction experiment has
been performed using single crystals of
SrFe2As2 grown by the self-ﬂux method[2]. The diffraction experiment has been
performed using the triple-axis spectrometer ISSP-GPTAS, operated in the doubleaxis mode. The palm cubic anvil cell wasused to generate a hydrostatic pressure up
to 7 GPa; to maintain good hydrostaticity
and to reduce the background, we have
employed deuterated glycerol as a pressure
medium.

disappears around 5 GPa, where the coexistence of the antiferromagnetic and superconducting domains is suggested in the
NMR study [3]. Our result clearly excludes
the possibility of coexisting long-range antiferromagnetic order of the stripe type andthe superconducting phase. By combining
the NMR result, it may be inferred that thedifferent type of the long-range antiferromagnetic order establishes at higher temperature, or the antiferromagnetic order becomes short-ranged. Further study is inprogress to clarify this issue.
[1] Y. Kamihara et al., J. Am. Chem. Soc. 130(2008) 3296.
[2] R. Morinaga et al., Jpn. J. Appl. Phys. 48(2009) 013004.
[3] K. Kitagawa et al., Phys. Rev. Lett. 103(2009) 257002.

Fig. 1. Pressure dependence of the ordered moment
size determined using the integrated intensity of the
103 reﬂection.

Shown in Fig. 1 is the resulting pressure dependence of the ordered magnetic-moment
size. This has been obtained by using the
integrated intensity of the 103 reﬂections,normalized to that of the nuclear Bragg intensity at the 206 position. It can be clearlyseen that the long-range ordered moment
Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
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JAEA-Review 2013-040

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1. Neutron Scattering

4 Amorphous࣭Liquid- 109 -

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JAEA-Review 2013-040

1-4-1

Mixing State of Benzene Solutions of Imidazolium-based Ionic Liquid,
C12mim+TFSAT. Shimomura, T. Takamuku
Saga University
Room-temperature ionic liquids (RTILs) have unique properties, such as
extremely low vapor pressure, thermal
stability, nonﬂammability, high polarity,and electroconductivity. However, theirhigh viscosity is a serious problem forapplication of ionic liquids in many ﬁelds.
Thus, RT-ILs are frequently used by mixing
with conventional molecular liquids, suchas water, methanol, and acetonitrile. In thepresent work, an effect of pi-pi interaction
on the mixing state of benzene solutions of 1-dodecyl-3-methylimidazoliumbis(triﬂuoromethanesufonyl)amide(C12mim+TFSA-) has been elucidated
using small-angle neutron scattering(SANS) technique.
C12mim+TFSA- was synthesized by aconventional method [1]. Sample solutions
were prepared by mixing C12mim+TFSAwith deuterated benzene (C6D6) at various
benzene mole fractions XC6D6. SANS intensities of the sample solutions at 298 K
were measured on the SANS-U spectrometer with the camera lengths of 1, 4 and 8m.
Figure 1 shows the Ornstein-Zernikecorrelation lengths Xi of C12mim+TFSA–
C6D6 solutions estimated from the SANS
spectra as a function of XC6D6. The Xi
values of C12mim+TFSA–C6D6 solutions
gradually increase with increasing XC6D6
from 0.9 and reach a maximum at XC6D6= 0.99. However, the Xi value of the solution decreases at XC6D6 = 0.995. Thus,
C12mim+TFSA- is heterogeneously mixed
with C6D6 in the very narrow mole fraction range of 0.9 < XC6D6 < 0.995 withthe maximum at XC6D6 = 0.99. The present
SANS results, together with the resultsfrom ATR-IR, NMR, and LAXS measurements, suggest that C12mim+TFSA- form
clusters in the solutions. The pi-pi inter-action between the imidazolium ring andC6D6 may stabilize C12mim+TFSA- clusters in the solutions. However, the clusters
are disrupted above XC6D6 = 0.99 due tothe solvation of C12mim+ and TFSA- by
the large amount of C6D6.
Reference[1] Nockemann, P.; Binnemans, K.; Driesen,
K. Chem. Phys. Lett., 415 (2005) 131.

Fig. 1.
Figure 1. Ornstein-Zernike correlation
lengths Xi of C12mim+TFSA–C6D6 solutions as afunction of C6D6 mole fraction.

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
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JAEA-Review 2013-040

1-4-2

Intermolecular Structure between Urea Molecule and Metal Ions in Concentrated
Aqueous Solutions
Kameda Y., Miyazaki T., Onodera S., Amo Y., Usuki T.
Department of Material and Biological Chemistry, Faculty of Science, Yamagata University
Neutron diffraction measurements were
Preliminary analysis of the observed
carried out for 6Li/7Li, 35Cl/37Cl, andGCl(r) (Fig. 1a) indicates that there are ca.
14N/15N isotopically substituted concen6 nearest beighbor water molecules aroundtrated aqueous urea solutions involving
the chloride ion. The value agrees well
*LiCl and Na*Cl salts in order to obtain inwith that repoted for various aqueous soformation concerning intermolecular struclutions, which implies that the ﬁrst hydrature between the urea molecule and coextion shell of the chloride ion is well mainisting ions in concentrated aqueous solutained in the presence of the urea molecule.
tions.
On the other hand, relatively small second
Six sample solutions with difpeak appearing in the distribution function
ferentisotopic
compositions,I.
around the lithium ion, GLi(r) (Fig. 1b) may(Na35Cl)0.05[(14ND2)2C=O]0.1(D2O)0.85,
suggest that the ﬁrst hydration shell of Li+
II. (Na natCl)0.05[(14ND2)2C=O]0.1(D2O)0.85, is signiﬁcantly affected by coexisting urea
III. (Na natCl)0.05[(15ND2)2C=O]0.1(D2O)0.85, molecule.
IV. (6LiCl)0.1[(14ND2)2C=O]0.1(D2O)0.8,
V. (7LiCl)0.1[(14ND2)2C=O]0.1(D2O)0.8,
Reference
and VI. (7LiCl)0.1[(15ND2)2C=O]0.1(D2O)0.8, [1} J. E. Enderby, G. W. Neilson, ”Water,
were employed in the present study.
A Comprehensive Treatise”, Plenum press,
Diffraction measurements were made at
New York (1979), Vol. 6, p. 1.
298 K using ISSP diffractometer, 4G (GPTAS) installed at the JRR-3M research reactor with an incident neutron wavelengthof 1.090 A. Scattered intensities were collected over the angular range of 3 < 2theta< 118 deg. After corrections for the background, absorption, multiple and incoherent scatterings, observed scattering intensities were converted to the scattering crosssectins.
The ﬁrst-order-difference functions [1]were evaluated by a numerical difference
between observed scattering cross sections
for sample solutions with different isotopic compositions. Fourier transform of
the difference function gives the distribution function around the substitited atom.
For NaCl-urea solutions, two distributionfunctions, GCl(r) (around Cl-) and GN(r)Fig. 1. Fig. 1. a) GCl(r) and GN inter(r) functions(around N atom of urea), were successfully
observed for NaCl-urea-D2O solutions. b) Distribudetermined as indicated in Fig. 1a. Distrition functions, GLi(r) and GN inter(r) functions obbution functions, GLi(r) (around Li+) andserved for LiCl-urea-D2O solutions.
GN(r) (around N aton of urea), were obtained as shown in Fig. 1b.
Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
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JAEA-Review 2013-040

1-4-3

Diﬀusional dynamics of water molecules in lower alcohol aqueous solutions at low
temperature.
K. Maruyama(A), M. Nakada(B), T. Kikuchi(C), and O. Yamamuro(C)(A)Fac. Sci., Niigata Univ., (B) Grad. Sch., Niigata Univ., (C)ISSP-NSL Univ. Tokyo
molecules hydrophobically hydrate to alcohol molecules or clusters at the concentration of xp = 0.17 and at the temperature of 298 K. By using high resolution
mode of AGNES, we could obtain usefuldata for analyzing the temperature dependence of the diffusional dynamics of watermolecules.
[1] M. Nakada, K. Maruyama, O. Yamamuro, and M. Misawa, J. Chem. Phys. 130(2009) 074503.
[2] E. Hawlicka, and L. A. Woolf, J. Phys.
Chem. 96 (1992) 1554.
1

10

exp.
RCM

0

S(Q,E)

10

-1

10

-2

10

-1

0

1

2

E/meV
0

10

D / A2 ps -1

We carried out the quasielastic neutron
scattering (QENS) measurements for npropyl alcohol aqueous solutions by using High Resolution Clod Neutron Scattering Spectrometer AGNES. The sample were mixtures of deutelized propanol(C3D7OH) and light water (H2O), andthe compositions of n-propyl alcohol xp
were 0.0 to 0.17. The self diffusion of water molecules was mainly observed because of the vary large incoherent scattering cross section of H. The measurements
were carried out with the high resolution
mode of AGNES and over the temperature
range of 268 to 343 K. The obtained spectra were well distinguishable from that of
vanadium used as the resolution function,
which means that they have enough resolution to analyze.
In order to get an information of diffusive dynamics of water molecules in npropyl alcohol aqueous solutions, we analyzed S(Q,E) s with relaxing cage model(RCM)[1]. The agreement of ﬁtting of experimental data with RCM analysis wasgood in whole E range (see ﬁg. 1). Then
we obtained diffusion coefﬁcients D of water molecules in every measured solutions.
The values of D obtained from the measurements with high resolution mode show
good agreement with the values in ref.
2. This agreement is quantitatively better
than the values of previous measurementwith standard mode.
Figure 2 shows an Arrhenius plot of D forthe solutions of xp = 0.10 and 0.17. The plotof D for pure water is also shown in thisﬁgure. The plot for xp=0.17 seems to turndown around 298 K, which suggests thatthe diffusive dynamics of water moleculesin the solution of xp = 0.17 changes at thistemperature. This result is consistent withprevious result, i.e. the almost all water

10

pure water
xp = 0.10
xp = 0.17

-1

-2

10
0.00280.003

0.0032-1

T

0.0034/K

0.00360.0038-1

Fig. 1. The ﬁtting of S(Q,E) with the RCM. Fig.
2 The Arrenius plot of diffusion constant of watermolecules.

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
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JAEA-Review 2013-040

1-4-4

In-situ neutron quasi-elastic scattering of meso-porous silica modiﬁed by sulfo
group
T. Otomo (1), S. Takata(2), K. Kamazawa(3), S. Fujita(3), M. Kofu(4), O. Yamamuro(4)High Energy Accelerator Research Organization (KEK) (1), Japan Atomic Energy Agency(JAEA) (2), Toyota Central R&D Labs. Inc. (3), The University of Tokyo (4)Meso-porous silica (MCM-41), whichsilanol groups on the surface were replaced with sulfo groups, shows highproton conductivity with low density ofacid group. The purpose of this study was
to reveal its proton kinetics in angstrom
scale from diffusion constant, hopping
distance and residential time of protons measured by neutron quasi-elastic
scattering.
Quasi-elastic spectra of following samples
were measured by High-resolution modeof AGNES spectrometer of ISSP.
1) perﬂuorosulfonic acid (0%RH)2) perﬂuorosulfonic acid (˜40%RH)3) perﬂuorosulfonic acid (˜80%RH)
4) MCM-41 (0%RH)
RH means relative humidity. Each sample has pores of 2-3 nm diameter and introduced proton was 1.4mmol/g. The sample
temperature was at 25 C. RH was realized
by adsorbing water vapor in the neutron
beam. It means sample 1) ˜ 3) are sample.

To derive diffusion constant and otherparameters further analysis is on-going.
However, the statistics of spectra are poor
since water contents in perﬂuorosulfonicacid were quite small (1/5 of FSM-16). Thisis unsurprising effect of introducing hydrophobic group. And the adsorption rateof water vapor in the in-situ environment
was quite slow: we had to consume ourbeam time for water adsorption. Sample
environment or sample preparation shouldbe improved to obtain better statistics.

It was found out that even in the 0%
RH sample, quasi-elastic component wasobserved. By increasing RH value, quasielastic components were gradually increased. On the contrast, MCM-41 (0%RH)
showed no quasi-elastic intensity as expected. These results suggest that there aremovable protons on the surface of perﬂuorosulfonic acid. It is also expected that thequasi-elastic components at high RH value
consist of two components. In our previous
quasi-elastic experiments of meso-porous
silica (FSM-16), two components model
was successful and each components represents slow diffusion water which wasstrongly conﬁned by surface silanol group
and ﬁrst diffusion of bulk-like water.
Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
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JAEA-Review 2013-040

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1. Neutron Scattering- 115 -

5 Polymer

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JAEA-Review 2013-040

1-5-1
Combined SANS, WANS, and Weighing Studies of Microbial Cellulose in
Drying Process
Y. Zhao, S. Koizumi and T. Hashimoto
Quantum Beam Science Directorate, JAEA, Tokai, Ibaraki 319-1195

It is well known that the microbial cellulose (MC) is exceptionally pure, containing no hemicellulose, lignin or other substances typical of plant cellulose. Featuresthat make MC useful for applications include
its high elasticity, which is especially important in the case of medical dressings, highly
crystalline structure, and superior mechanical strength. Additionally, MC has highwater holding capacity, and is composed oftrace amount of cellulose microﬁbrils andlarge amount of water. Due to these advantages, MC has been used as electronic paper display, metal catalysts carrier, acoustic
membranes in speakers, artiﬁcial blood vessels
and wound dressing. We studied the structural change of the microbial cellulose in thedrying process by means of combined timeresolved measurements of small-angle neutron
scattering (SANS), wide-angle neutron scattering (WANS), and weighing, as schematically illustrated in Fig.1. Combining thethree Tr-techniques, we are able to observe
the structural change of the cellulose network
in two diﬀerent length scales on a rigorously
common time scale, e.g., the changes in microscopic structure (the concentration ﬂuctuations of cellulose ﬁbrils and the air voids
generated upon drying), the geometry andstructure change in mesoscopic scale (the size
and total weight of the specimen, the water concentration or hydrogen density in the
scattering volume), and interrelationships between the structural changes. We found thedrying process is divided into three time regions, deﬁned by Region I, II and III. In Region I, 3-dimensional shrinkage occurs and theweight loss is fast. While in Region II, only
1-demensional shrinkage is observed, hence
the weight loss slows down. In Region III,
all changes stop, indicating the drying process is over, however, still partial of water
原子炉：JRR-3

装置：SANS-J(C3-2)

remains, which is believed to be bound water. We observe that the microscopic structure of cellulose ﬁbrils itself, at q-range (q denotes magnitude of scattering vector) coveredin this study, does not change upon drying,
but the amount of air voids does. In addition, the drying ways are found to inﬂuence
the size of the air voids dramaticly. The fasterthe drying process is, the larger the air voids
are.
To date, there is no study so far thatuses such a combination of real-time methods as this study does on the same single
batch of cellulose system. Owning to thisunique experimental method, all the experimental ﬁndings may be directly observed unequivocally. The results imply the followings.
Deuterium labeling medium makes the drying process completely visible. The layer-bylayer structure of the cellulose network brings
about the change from 3-dimensional shrinkage to 1-dimensional shrinkage upon drying.
Drying ways determine the size of air voids.
It is intriguing to note that this study of timechange in hierarchical structure levels of a system, oﬀers a primitive example of informationtransmittance among diﬀerent structure levels, which is important in living biological systems in general.

Figure 1: Schematics of experimental setup.

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JAEA-Review 2013-040

1-5-2
Distribution and Accumulation of Water in the Polymer Electrolyte Fuel Cell
Performed by Small-Angle Neutron Scattering
A. Putra, D. Yamaguchi and S. Koizumi
Quantum Beam Science Directorate, JAEA, Tokai, Ibaraki 319-1195

Introduction. During an operation of polymer electrolyte fuel cell (PEFC), water is generated in individual cell elements as a result ofelectrochemical reaction, transportation andexclusion of water. Distribution of the waterin the fuel cells directly aﬀects an operation
performance of PEFC. Therefore, it is crucial to determine simultaneously and insitu
the distribution and accumulation of the water appeared in the individual cell elements
belonging to a given single fuel cell under operation.
Method. In this study, insitu observation of
aging process of a membrane electrode assembly (MEA) with an active area of 50 x 50 cm
was performed in the PEFC using SANS. The
MEA elements consist of a Naﬁon 212 sandwiched with carbon-supported catalyst of Pt
and Pt-Ru for cathode and anode 1) . The
PEFC temperature and dew-points of the anode and the cathode was controlled at 80o C.
The ﬂow rates of hydrogen and air were set at
180 and 800 ml/min. The current density wasincreased step-wisely from 0 to 920 mA/cm2
with duration of 60 s at each current density.
The SANS measurements was performed on
the operating PEFC using the focusing andpolarizing SANS spectrometer (SANS-J-II) at
research reactor JRR-3, Japan Atomic Energy
Agency, Tokai, Japan 2) 3) .
Result. Figure 1 shows SANS proﬁles of
the 4th aging process of an operating PEFC
with increasing current densities from 0 to
920 mA/cm2 . Scattering maximum, is socalled the ionomer peak correspond to theswelling of ion-cluster by water. By increasing the current density, the peak height increased and the peak position moved to thelower scattering vector, q value. These tendency indicated large amount of water was
distributed and accumulated in ion channels.
The q related to the magnitude of interdomain
原子炉：JRR-3

装置：SANS-J(C3-2)

distance,Lion between ion channels itself. The
Lion was determined from q by Lion =2 π/q.
Shift of the peak to the lower q indicated increasing in Lion , and as a consequence, the accumulation of water in ion channel increased.
In summary, the SANS method was capable
to detect, visualize and determine distribution
and accumulation of water microscopically ina MEA of an operating PEFC.

Figure 1: SANS proﬁles obtained from the 4th aging
process of an operating PEFC with increasing a current density from 0 to 920 mA/cm2 .

References
1) S. Koizumi, et al :“Focusing and polarized neutron small-angle scattering spectromeeter (SANSJ-II). The challenge of observation over lengthscales from angstrom to a micrometre”, J. Apply.
Cryst, 40, s474(2007).
2) H. Iwase, et al :“A combined method of smallangle neutron scattering and neutron radiography
to visualize water in an operating fuel cell over awide length scale from nano to millimeter”, Nucl.
Ins. Meth. Phys. Res. A , A605, 95(2009).
3) A. Putra, et al :“In-situ observation of dynamic
water behavior in polymer electrolyte fuel cell by
combined method of Small-Angle Neutron Scattering and Neutron Radiography”, J. Phys. Conf.
Ser, inpress

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JAEA-Review 2013-040

1-5-3

Characterization of Swollen Structure of High-density Polyelectrolyte Brushes inSalt Solution by Neutron Reﬂectivity
Y. Terayama1, M. Kobayashi2, A. Takahara*1,2,3
1Graduate School of Engineering, Kyushu University, 2Japan Science and Technology Agency,
ERATO, 3Institute for Materials Chemistry and Engineering, Kyushu University
The behavior of polyelectrolyte brushes
at salt solution interface is important
for applications in medical materials,
as these materials are in contact withblood and other body ﬂuids containing
salts. We investigated the dependenceof swelling brush conformation on theionic strength analyzed by neutron
reﬂectivity (NR) of zwitterionic type
polyelectrolyte and cationic polyelectrolyte brushes prepared by surfaceinitiated atom transfer radical polymerization of 2-(methacryloyloxy)ethyl
phosphorylcho line (MPC) and 2(methacryloyloxy)ethyltri methyl ammonium chloride (MTAC), respectively.
The polyelectrolyte brushes were preparedon quartz surface. NR was measured bya multilayer interferometer for neutrons(MINE) in JRR-3 at TOKAI, using wavelength λ = 0.88 nm with an accuracy of
2.7 %. A neutron beam was irradiated froma quartz substrate to the interface between
heavy water (D2O) and the polymer brushon quartz glass. The incident slit width
were adjusted to maintain a 55 mm footprint size on the sample surface. The scattering vector, q, in specular reﬂectivity isdeﬁned by q = (4 π/λ) sin θ. The NR proﬁles were analyzed by ﬁtting calculated reﬂectivity from model scattering length density proﬁles to the data using Parratt32 software.
Fig. 1 shows the NR curves and scattering length density (SLD) proﬁles ofpoly(MTAC) brush in D2O and 1.0 - 5.6 M
NaCl/D2O. The SLD of poly(MTAC) brushin pure D2O was increased from 5.20 ×
10-4 to 6.36 × 10-4 nm-2 along with the
distance from the substrate. The gradientproﬁle indicated that the polymer chains in
D2O were stretched up to ca. 80 nm. Whenthe poly(MTAC) brush was immersed in
the 5.6 M NaCl/D2O solution, the reduction in roughness and thickness of swellingbrush layer was observed, as shown in Fig.
1(f). The brush layer height was 69 nm.
The hydrated salt ions screened the repulsive interaction between quarternary ammonium groups of the brush, forming amore shrinked chain conformation.
On the other hand, no structural change
was observed in swollen poly(MPC) brusheven in a salt solution, although the NR
proﬁles were not shown here. Poly(MPC)
is a quite unique polyelectrolyte of whichchain structure in a aqueous solution
hardly changed by salt effect probably due
to a weak intermolecular interaction ofphosphorylcholine units[1].
References(1) Matsuda Y, Kobayashi M, Annaka M,
Ishihara K and Takahara A 2008, Langmuir
24 8772.

Fig. 1. Fig 1. NR curves of poly(MTAC) brush in (a)D2O, (b) 1.0 M NaCl, (c) 5.6 M NaCl in D2O, and (d)(f) their corresponding neutron SLD proﬁles alongwith the distance from quartz surface, respectively.
Scattering vector q = 4 π sin θ/λ at λ = 0.88 nm.

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
Report Number: 1031

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JAEA-Review 2013-040

1-5-4

Detailed analysis for shish-kebab structural formation process with small angle
neutron scattering
Go Matsuba, Kazuko Kawashima, Koji Nishida and Toshiji Kanaya
Yamagata University, Kyoto University
Crystallization of polymers under ﬂows
have been extensively investigated because
during most polymers processing the polymers are exposed to various ﬂows such aselongational, shear and mixed ﬂows. Manyexperimental evidences have establishedthat these ﬂow processes can signiﬁcantly
affect the crystallization kinetics and ﬁnal morphology. Imposed ﬂow conditions
that are temperature, shear rate and so on,
are variables that affect the developmentof ﬂow-induced structure and have strong
impact on all processes of crystal growthand morphology. For example, when polymer crystallizes under ﬂows, the so-calledshish-kebab structure could be observed.
The shish-kebab structure consists of longcentral ﬁber core (shish) and lamellar crystals (kebab) periodically attached along theshish structure. It is believed that the shish
structure is a molecular basis of ultra-highmodulus and ultra-high strength ﬁber.
For more detailed analysis of shish kebab structure, we carried out the neutronand x-ray scattering measurements in elongated PE sample of deuterated low molecular weight and ultra-high molecular weighthydrogenated PE. The long oriented structure had radius of 1 micron and lengthof ∼ 12 micron and included about threeextended chain crystals with radius of ∼4.5 nm. The complemented analysis ofneutron and x-ray beam was one of mostpowerful methods for clariﬁcation of complicated structure like shish-kebab. In
this work, we have performed the timeresolved SANS and SAXS measurements inorder to clarify the shish-kebab structureformation process in more detail especially
focusing on shish formation process.
In this experiment we used two PEs
to prepare a blend. One is high molecular weight hydrogenated polyethylene(HMW-h-PE) with molecular weight Mw= 2,000,000 and the other is low molecular weight deuterated PE (LMW-d-PE) with
Mw = 600000, where Mw is the weightaverage molecular weight. HMW-h-PE
and LMW-d-PE were dissolved in hot odichlorobenzene with antioxidant regent(2,6-t-butyl-p-cresole) to form a homogeneous solution at 145 ◦ C under a nitrogen
atmosphere. After keeping the solution at
145 ◦ C for 2 h, it was poured into methanol
to make precipitation. The blended sample
was ﬁltered from o-dichlorobenzene andrinsed with methanol. The precipitation
was vacuum-dried at room temperaturefor several days and then hot-pressed at
170 ◦ C for 3 min and quenched rapidly to
ice/water to obtain a ﬁlm about 0.5 mm
thick.
Small-angle neutron scattering (SANS)
measurements were performed using
SANS-U spectrometer at JRR-3 reactor in
JAEA, Tokai. In the SANS-U spectrometer, the scattering vector Q range wasfrom 0.007 to 0.06 Å−1 . Small angle x-ray
scattering measurements were carried out
using apparatus installed at the beam-line
BL-15A in Photon Factory, KEK, Tsukuba,
Japan. The range of the length of scatteringvector Q was 0.008 and 0.15 Å−1 .
At ﬁrst we performed the structuralformation process of drawing polyethylene blends with time-resolved SAXS andSANS measurements at 125◦ C. The shishkebab structure formation process was observed with both SAXS and SANS measurements. From 2D analysis, it was foundthat the isotropic spherulites become depressed along the elongation direction,suggesting that inter-lamella distance was
expanded by the drawing process. After that, lamella crystal stacking (or kebab

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
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JAEA-Review 2013-040

formation) could be observed from SAXSand SANS measurements, while streak-likescattering proﬁle from shish-structure wasobserved only in the SANS pattern. For
more detailed analysis, we observed thelamella thickening. Above drawing ratio of 4, the kebab structure was disappeared, while the streak-like scattering proﬁles grew strongly. This suggests that polymer chains in the kebab were graduallymerged into the extended chain crystals(shish-structure) on further drawing. However, the number density of shish-structure
is not so high to be detected with x-ray
scattering measurement, but the shish scattering was enhanced in the SANS scattering proﬁle due to the strong scattering contrast between deuterated and hydrogenated PEs. The number of shishstructure was then evaluated from these
SANS proﬁles.

1-5-4- 121 -

JAEA-Review 2013-040

1-5-5

Dynamics of nano-meter-sized domains on a vesicle
Masayuki Imai and Yuka Sakuma
Ochanomizu University
Using a contrast matching techniqueof small angle neutron scattering (SANS)
we have investigated a phase separation
to liquid-disordered and liquid-orderedphases on ternary small unilamellar
vesicles (SUVs) composed of deuteratedsaturated,hydrogenated-unsaturated
phosphatidylcholine lipids and cholesterol, where the equilibrium size of these
domains is constrained to less than 10 nm
by the system size. Below a miscibility
temperature, we observed characteristic
scattering proﬁles with a maximum, indicating formation of nano-meter-sizeddomains on the SUVs. The observed proﬁles can be described by a multi-domain
model rather than a mono-domain model.
From the ﬁtting we extracted the domain
size, number of domains on a vesicle, andthe scattering contrast between the domain and the surrounding solvent. Using
these parameters, we established a phase
diagram of the ternary vesicle.

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
Report Number: 1055

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JAEA-Review 2013-040

1-5-6

Vesicle structures below the Kraﬀt temperature in a surfactant solution-Hyperswollen lamellar phase coexisting with vesiclesYouhei Kawabata, Tomoaki Shinoda and Tadashi Kato
Tokyo Metropolitan University
In a binary system consisting of surfactant and water, a hydrated solid phase
is formed below the Kraft temperature,
where the hydrophobic tails extend to thelength with all trans. The hydrated solid
phase is a two-phase coexistence of excess water and lamellar structure Lβ of bilayers whose hydrophilic tails are interdigitated. We have ever investigated thestructural formation of the hydrated solid
phase in the C16 E6 /water and C16 E7 /water
system [C16 H33 (OC2 H4 )6,7 OH] by meansof small angle X-ray and neutron scattering (SAXS, SANS) and optical microscope.
In the C16 E7 system, hollow vesicles areformed as shown in Fig.1 (upper), which
is obtained from our confocal microscopemeasurements. It has been found thatthe vesicle formation deeply depends on
quenched temperature. Especially, in thelast SANS proposal, we found the hyperswollen lamellar structure, whose repeat
distance is about 84 nm, at 4 ◦ C.
In this report, we investigate the temperature dependence of SANS proﬁles bychanging various quench conditions, andinspect temperature range of the formationof the hyper-swollen lamellar structure.
The SANS experiments were carried out
using the SANS-U spectrometer. The momentum transfer Q ranged over 0.003 ≤Q ≤ 0.2 Å−1 The Krafft temperature is 15◦ C for the C E system. Temperature was
16 7
jumped to 6 ∼ 14 ◦ C. The concentration of
C16 E7 7 is 10 wt%.
The lower ﬁgure of Fig.1 shows the temperature dependence of the SANS proﬁles.
The proﬁle at 4 ◦ C was obtained in theprevious experiments, and the Bragg peakcan be clearly seen. On the other hand,
we can not observe any swollen lamellar
structures in the temperature range of 6 ∼14 ◦ C. Therefore, the hyper swollen lamel-

lar structure can be formed in the case ofdeep quenched temperature, at least below 4 ◦ C. However, from 6 ∼ 14 ◦ C, theSANS proﬁles strongly depend on temperature. In the higher temperature, the SANS
proﬁles do not depend on Q very much,while the Q dependence increases with decreasing temperature. This means that thelarger structures of Lβ domains, which are
the shells of vesicles, are formed when temperature is deeply quenched.

Fig. 1. 3-D Confocal microscope image of vesicles
in the C16 E7 /water system (upper) and the SANS
proﬁles obtained at various quenched temperature.

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1-5-7

Order-Order Transition of Block Copolymers Swollen with Supercritical Carbon
DioxideHideaki Yokoyama, Masateru Ito, Koichi Mayumi, Kohzo Ito, Mitsuhiro Shibayama,
Hitoshi Endo, Takuya Suzuki
The University of Tokyo
In diblock copolymers (BCP), a varietyof microphase separated morphologies ina scale of tens of nanometer have been
observed depending on the volume fraction of blocks, degree of polymerizationand interaction parameter between blocks.
Similar morphologies have been found indifferent class of softmatters: for example, surfactant/solvent and BCP/solvent
systems form similar morphologies, which
resulted from its amphiphilicity and solvent selectivity. By using additional degree of freedom by using a solvent, themorphologies becomes a function of concentration, which can be easily changed.
We have succeeded in inducing order-toorder phase transitions (OOT) by swelling
selectively CO2 -philic blocks of BCP bychanging the pressure of supercritical CO2 ,which controls apparent volume fraction of
CO2 -philic blocks.[1–4] The CO2 pressure
induced morphology changes were anticipated by ex-situ analysis of the samples
that was frozen and removed from supercritical CO2 . However, the OOT mechanism by selective swelling hasn t clearly
understood. Thus this time we performed
in-situ measurement of swollen BCP in
CO2 by neutron scattering analysis. We analyzed the morphologies of Poly(styreneb-perﬂuorooctylethyl methacrylate)s (PSPFMAs), using small angle neutron scattering, SANS-U at JRR-3, Tokai, Japan.
PFMA is CO2 -philic and is expected to behighly swollen in CO2 . We prepared six
block copolymers differing in the ratio of
PS to PFMA and total degree of polymerization, of which molecular weights arein the range from 10,000 to 25,000 andof which morphologies are Sphere, Cylinder and Lamellar. Then the samples wereplaced into a high-pressure cell with pres-sure and temperature controls. We observed multiple OOT as a function of CO2
pressure on the pressure dependence of
SANS scattering patterns. Depending on
the initial morphology, which is the one at
atmospheric pressure, multiple phase transitions starting from the hexagonal packed
PFMA cylinders to the inversed body centered cubic lattice of PS were observed;
however, the sample with spherical PFMA
domains as the initial morphology maintains its spherical morphology irrespectiveof pressure while the lattice constant increases with pressure.
[1] H. Yokoyama, L. Li, C. Dutriez,
Y. Iwakura, K. Sugiyama, H. Masunaga,
S. Sasaki, H. Okuda, Macromolecules 41,8626?8631, (2008). [2] H. Yokoyama, C.
Dutriez, L. Li, T. Nemoto, K. Sugiyama,
S. Sasaki, H. Masunaga, M. Takata, and
J. Chem. Phys., Vol. 127,
H. Okuda
014904-1 - 014904-9 (2007). [3] L. Li, H.
Yokoyama, Angew. Chem. Int. Ed. 45,
6338-6341 (2006). [4] H. Yokoyama, L. Li,
K. Sugiyama, T. Nemoto, Adv. Mater., 16,1542-1546 (2004).

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1-5-8

Exclusive volume eﬀect on uni-lamellar vesicles by addition of polymers
Norifumi L. YamadaHigh Energy Accelerator Research Organization
It has been reported that the mixtureof long-chain phospholipids (14 carbons/chain or more) and short-chain
phospholipids (6-8 carbons/chain) spontaneously forms uni-lamellar vesicles(ULVs).
Since a membrane consistingof phospholipid molecules is the main
component of biomembranes, such SUVs
have a potential to create biomimetic
system for studying bioactivities in cells.
Last year, the effect of polyethyleneglycol(PEG) on the stability of ULVs consisting of
dimyristoylphosphatidylcholine (DMPC;
14 carbons/chain) and dihexanoylphosphatidylcholine (DHPC; 6 carbons/chain)mixture has been investigated by small
angle neutron scattering (SANS). This
result clearly shows that reconstruction of
ULVs was induced by PEG. However, theorigin of the reconstruction has not been
understood yet.
In this study, we performed the SANS
experiment to clarify the effect of PEG on
ULV reconsruction. The SANS experiments
were performed using SANS-U at the C12 port of JRR-3 at Japan Atomic Energy
Agency (JAEA), Tokai. The lipid mixtureof [DHPC]:[DMPC]=1:3.2 was dissolved ina D2O solution of 3 mM CaCl2. The
lipid concentration of the solution was controlled to be 0.9 vol%. The obtained solution was heated to 323 and 303 K to make
ULVs with different size, and mixed withthe twice amount of PEG solution to be 0,20, 40, and 60 mg/mL.
Figure (a) shows the SANS proﬁles before the addition of PEG solution, in which
the period of fringes reﬂects the size of
ULVs. After mixing with PEG solution,
ULVs are reconstructed to be lamellae or
multi-lamellar vesicles (MLVs). Figure (b)and (c) shows the phase diagram after the
addition of PEG at 323 and 303 K respectively. These phase diagram clearly showthat large molecular weight PEG has astrong effect on the reconstruction of ULVs,
and the effect is enhanced at 303 K. It
should be noted here that no structuralchange was observed when ULV/PEG
mixture at 323 K was cooled down to 303K.
This indicates that the size of ULVs plays
an important role on the ULV reconstruction.
From these results, we conclude that exclusive volume effect of PEG is the origin of
the ULV reconstruction because large PEGs
and ULVs have large exclusive volume.

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JAEA-Review 2013-040(a) 103
2

30°C
50°C

-1

I(q) [cm ]

10

1

10

0

10

-1

10

-2

10

concentration [mg/mL]

(b)

2

4

6 8

0.1

2

4

6 8

-1

q [nm ]

60

1

2

Lamellae

40

ULV

20
0
1

10

2

10

3

10

4

10

5

10

M. W. [g/mol]concentration [mg/mL]

(c)

60

MLV
Lamellae

40

ULV

20
0
1

10

2

10

3

10

4

10

5

10

M. W. [g/mol]
Fig. 1. (a) SANS proﬁles before the addition of PEG
solution. (b) phase diagram after the addition of
PEG at 323 K. (c) phase diagram after the additionof PEG at 303 K.

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1-5-9

States of Poly(methyl methacrylate) Monolayers Supported on Substrates in
Non-solvents
Hironori Atarashi(1), Ko-ichiro Hori(1), Naoki Kai(2), Ayanobu Horinouchi(1),Yoshihisa Fujii(1), Masahiro Hino(3), and Keiji Tanaka(1,2)
1. Department of Applied Chemistry, Kyushu University, Fukuoka 819-0395, Japan
2. Department of Automotive Science, Kyushu University, Fukuoka 819-0395, Japan
3. Research Reactor Institute, Kyoto University, Kumatori, Osaka 590-0494, Japan
Polymeric materials have been widelyused for medical diagnosis and treatment
in such applications as DNA arrays, tips
for micro-total-analysis and scaffolds for
artiﬁcial organs. When they are used
in a human body, the surface is contact
with liquid. In such cases, the interfacial structure and properties strongly affect the stability of the materials. We have
hitherto studied aggregation structure ofpoly(methyl methacrylate) (PMMA) at theinterfaces with liquids such as water, hexane and methanol by neutron reﬂectivity(NR) measurement.[1] As a result, theliquid/polymer interfaces were diffuse incomparison with the air/polymer interface, probably due to interfacial roughening and the partial dissolution of segments
at the outermost region of the ﬁlm. In thisstudy, we focused on an ultrathin PMMA
ﬁlm with a larger surface to volume ratio
so that the swollen structure at the outermost region of the ﬁlm could be easily
discussed. Deuterated PMMA (dPMMA)
with number-average molecular weight of
296 k was used. A ﬁlm of dPMMA was
spin-coated onto a quartz block from atoluene solution. The ﬁlm thickness was
about 12 nm. The ﬁlm was annealed for 24
h at 423 K under vacuum.
Figure 1 (a) shows NR curves for the dPMMA ﬁlm under air and methanol. For
clarity, the data set under methanol is offset by a decade. The open symbols show
experimental data and solid lines are bestﬁtting curves calculated on the basis of themodel scattering length density (b/V) proﬁles shown in the panel (b). The dPMMA
ﬁlm was swollen under methanol by a factor of 1.65. Interestingly, it was higher thanthat for the 70 nm-thick ﬁlm, 1.39. [1] Also,
the overall content of methanol for the 12
nm-thick dPMMA ﬁlm was larger than thatfor the 70 nm-thick ﬁlm.
[1] K. Tanaka, Y. Fujii, H. Atarashi, K. Akabori, M. Hino, and T. Nagamura, Langmuir, 24, 296 (2008).

Fig. 1. Figure 1 (a) Neutron reﬂectivity for a dPMMA ﬁlm under air and methanol. The scattering
length density proﬁles are shown in (b). For clarity,
the data under methanol is off-set by decade.

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1-5-10Aggregation States and Dynamics of Poly(methyl methacrylate) at Interfaces with
Non-solvents
Hironori Atarashi(1), Hitoshi Endo(2), Mitsuhiro Shibayama(2), and Keiji Tanaka(1)1. Department of Applied Chemistry, Kyushu University, Fukuoka 819-0395, Japan
2. Institute for Solid State Physics, The University of Tokyo, Chiba 277-8581, Japan
Polymeric materials have been widelyused for medical diagnosis and treatment
in such applications as DNA arrays, tips
for micro-total-analysis and scaffolds for
artiﬁcial organs. When they are used
in a human body, the surface is contact
with liquid. In such cases, the interfacial structure and properties strongly affect the stability of the materials. We have
hitherto studied aggregation structure ofpoly(methyl methacrylate) (PMMA) at theinterfaces with liquids such as water, hexane and methanol by neutron reﬂectivity(NR) measurement.[1] As a result, theliquid/polymer interfaces were diffuse incomparison with the air/polymer interface, probably due to interfacial roughening and the partial dissolution of segments
at the outermost region of the ﬁlm. Thismeans that mobility of chains in the interfacial region is enhanced in comparison with that in the internal region, andmotivates us to examine interfacial mobility. PMMA with number-average molecular weight of 300 k was used as a sample. Here, PMMA particles were used toincrease the ratio of interface to volume
rather than using a ﬁlm. Deuterated water(D2O) and methanol (CD3OD) were used
as liquids. PMMA particles were ﬁlled into
a quartz cell with 2 mm optical length.
Normalized intermediate scattering function (I(q,t)/I(q,0)) for PMMA being contacted with D2O and CD3OD at 293 K were
evaluated by neutron spin echo (NSE) measurement.
Panels (a) and (b) of Figure 1 show(I(q,t)/I(q,0)) for PMMA in D2O and
CD3OD at q = 0.6 nm-1, respectively. The
open symbols show experimental data andsolid lines are drawn as a guide for eyes.
The I(q,t)/I(q,0) value decreased with in-creasing time for the both cases. However,
the relaxation behavior was not the samefor each other. Although it is too early toconclude that the relaxation reﬂects mobility of segments at the liquid/polymer interface, the idea could well explain the result.
We will report more conclusive work in thenear future.
[1] K. Tanaka, Y. Fujii, H. Atarashi, K. Akabori, M. Hino, and T. Nagamura, Langmuir, 24, 296 (2008).

Fig. 1. Normalized intermediate scattering functions for PMMA (a) in D2O and (b) in CD3OD at
294 K. The Open symbols show experimental dataand solid lines are drawn as a guide for eyes.

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1-5-11

Nano-sized clusters in the mixture of D2O/H2O in the presence of
3-methylpyridine
Hideki Seto and Koichiro Sadakane
High Energy Research Organization
Mixtures of D2 O and 3-methylpyridine(3MP) exhibit a closed-loop type on the Tφ (φ is a volume fraction of 3MP) phase
diagram and that H2 O and 3MP mixtures
do not phase separate at any temperature.
It is also known that the deuteration ofwater and pressure have opposite effects
on the phase equilibrium behavior (Z.P.
Visak, et al., J. Phys. Chem. B, 107, 9837
(2003)). These results suggest that the solvation afﬁnities of 3MP with D2 O and H2 O
are different. However, no deﬁnite explanation for this problem exists so far.
Recently, we have performed the preliminary experiment for the mixtures of 3MP
and D2 O/H2 O are measured by SANS at
CG-2, HFIR, Oak Ridge National Laboratory. Then, deuterated 3MP (3MP-d7) was
mixed with 95.9 vol% of D2O and 4.1 of
H2O in order to set the mean neutron scattering length density of water being thesame as that of d-3MP. When the distributions of D2 O and H2 O are homogeneous,no SANS scattering should be observed
even if the distribution of d-3MP is heterogeneous. However, the observed SANS
proﬁle indicate the strong scattering centered at q=0. The proﬁle could be explainedby a scattering function from spherical particles with Schultz size distribution. The radius of spherica clusters are about 400 Å.
This result indicates that the demixing of
H2 O and D2 O is induced by the effect of
d-3MP.
In order to conﬁrm this result, weagain performed the SANS measurement
at SANS-U. Wavelength of indicent neutron was 4.8 Å, the beam size was 5mm
and the distance between the sample position and the 2D detector was 2m/12m.
The sample was contained in a quartz cellof 4mm-t. Unfortunately, no clear proﬁleswere observed in this case since the scatter-ing intensity was too weak. Therefore, further measurements should be done by using higher ﬂux neutron beam.
Neutron Spin Echo experiments are performed at iNSE in the mixture of water, 3MP and NaBPh4 . The intermediated correlation function can be interpretedwith the model proposed by Zilman andGranek. This evidence veriﬁes the formation of the membrane-like structure byadding NaBPh4 .

Fig. 1.
SANS proﬁle of water(D2O+H2O)/3methylpyridine.

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1-5-12Pressure induced disorder/lamellar phase transition in the mixture ofwater/organic solvent/salt
Hideki Seto and Koichiro Sadakane
High Energy Research Organization
Binary mixtures of water and an organic solvent have been intensively investigated to clarify the universal features ofcritical phenomena and phase separation
dynamics. The effect of salt in the binary mixtures have been widely studiedin terms of the phase behavior, in whichchanges of the critical temperature and/or
the closed-loop type miscibilty gap wereobserved. The binary mixture of D2 O
and 3-methylpyridine (3MP) is one of wellknown systems to show critical phenomena with various types of salt effect. Thisbinary mixture is completely miscible atroom temperature and becomes immiscible with increasing temperature, and ﬁnally separates into two phases above thecritical temperature associated with criticalphenomena. The critical point of the mixture, D2 O and 3MP, lies at φ3MP = 0.3 andT = 310.3 K, where φ3MP and T are the volume fraction of 3MP and temperature, respectively. The small-angle X-ray scattering (SAXS) result by Jacob et al. was interpreted as the nano-sized micro-clusters
exist in one-phase region (J.Jacob, et al.,Chem Phys Lett., 304, 180 (1999)). The investigations of the critical phenomenon bymeans of dynamic light scattering (DLS)
showed the crossover behavior from 3dimensional Ising to mean-ﬁeld universality, and were concluded that an additional
length scale exists competing with the correlation length of the concentration ﬂuctuations.
Recently, we have conﬁrmed that the
self-assembling structures at an off-criticalconcentration of the binary mixture withan antagonistic salt, which is composedof hydrophilic and hydrophobic ion pair
(K. Sadakane, et al., Phys. Rev. Lett.,
103 167803, (2009)) . The system was
the mixture of D2 O, 3MP and sodium

tetraphenylborate (NaBPh4 ). Optical microscope images of the system showed
the characteristic feature of multi-lamellar
vesicles, whose size was about 10 μm. Inside the multi-lamellar vesicles, a periodic
structure having a mean repeat distanceof about 100 Å was discovered by meansof SANS. The result clearly indicated a
microphase separation between water and3MP domains, which is induced by thepresence of the salt. These phenomena
are comparable with the self-assembly internary mixtures of water, oil and surfactant, i.e., microemulsion.
In the system of microemulsion, pressure induced disorder/lamellar phase transition is known (Y. Kawabata, et al., Phys.
Rev. Lett., 92 056103 (2004)), and it is expected that similar phenomena is observedin the mixture of D2 O/3MP/NaBPh4 .
Threfore, we perforemed SANS measurements by using pressure cell at SANSU. D2 O and 3MP was mixed at φ3MP =0.09, where φ3MP is the volume fractionof 3MP against the whole mixture of D2 O
and 3MP, and 85 mM of NaBPh4 were dissolved. Temperature was ﬁxed at 321 K.
As a result, disorder/lamellar phase transition was observed; disordered-structurechanges to lamellar-structure above 100
MPa. We consider that the phenomenon
should be explained in terms of the change
of intermembrane interactions. Also, theinteraction between water and organic solvent (in this case, 3MP) should play the important role for the phase transition.
Based on this idea, we examined
the pressure dependence of concentration ﬂuctuation in the mixture of
D2 O/acetonitrile(AN). In this system,
the phase separation temperature is notaffected by the deuteration (so, contrast
variation experiments will be done in the

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mixture of water/AN/salt in the future).
D2 O and AN was mixed at critical concentration: the volume fraction of AN, φAN , is0.69. Temperature was ﬁxed at 298 K. As aresult, concentration ﬂuctuation increased
with increasing pressure above 150 MPa.
The similar tendency was also observedin the mixture of D2 O/3MP. Therefore,
it is considered that the solubility oforganic solvent for the water decreases
with increasing pressure. Anyway, further
experiments should be performed for the
mixture of water and organic solvent.

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1-5-13LCST Phase Behavior of Poly(benzyl methacrylate) in Room-temperature Ionic
Liquid studied by SANS
Shibayama M.(A), Fujii K.(A), Matsunaga T.(A), Ueki T.(B), Watanabe M.(B)(A) Institute for Solid State Physics, The University of Tokyo. (B) Yokohama National
University
It is well known that a lower criticalsolution temperature (LCST)-type phasebehavior in a polymer solution can beoften observed in aqueous medium. We
have recently reported that poly(benzyl
methacrylate), PBnMA shows an LCST
type phase behavior in a hydrophobic room-temperature ionic liquid (IL)such as 1-ethyl-3-methylimidazoliumbis(triﬂuoromethanesulfonyl)amide,[C2mIm][TFSA].[1,2] In this study, smallangle neutron scattering (SANS) weremade on the PBnMA in [C2mIm][TFSA]
solution and the LCST phase behavior
was characterized from the structural
viewpoint.
SANS measurements were carried out using SANS-U spectrometer with the camera
length 2 and 8 m. SANS proﬁles corrected
for background using an empty cell werenormalized with respect to the scatteringof polyethylene as a secondary standard
material. The SANS proﬁles thus obtained
were further corrected for the incoherent
scattering to obtain the scattering intensity,
I(q).[3]Figure 1 shows SANS proﬁles, I(q)s observed for fully deuterated IL ([C2mim]d11[TFSA]) containing 3 wt% PBnMA
polymers in the temperature range of 298- 373 K. As seen, the I(Q)s were kept practically unchanged in the temperature range
between 298 and 363 K, while they suddenly changed at 363 K. This indicatesthat the LCST behavior of PBnMA-IL solution is a ﬁrst order phase transition, whichis consistent with dynamic light scattering (DLS) results. The SANS proﬁles below
363 K were well represented by theoretical Debye scattering function (solid line),
and then the radius of gyration, Rg wasestimated to be almost constant, i.e., 40 -45 . With regard to T > 363 K, we tried
to reproduce the observed I(q)s by using asum of Debye and squared-Lorentz functions. The SANS result obtained here wascompared with those in aqueous Poly(Nisopropylacrylamide), PNIPAm solutions
as a typical LCST system. It was found thatthe speciﬁc solvation of PBnMA by solvent
IL plays an essential role on the phase behavior.
[1] Ueki T., Karino T., Kobayashi Y.,
Shibayama M., Watanabe M., J. Phys.
Chem. B 2007, 111, 4750.
[2] Ueki T., Watanabe M., Macromolecules
2008, 41, 3739.
[3] Shibayama M., Matsunaga T., and Nagao M. J. App. Cryst. 2009, 42, 621.

Fig. 1. SANS proﬁles observed in the PBnMA[C2mim][TFSA] solution at various temperatures.

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1-5-14

Dynamic and Static Structure Analyses of Super-homogeneous Tetra-PEG gel
Sakai T.1 , Matsunaga T.2 , Shibayama M.2 , and Chung U.1
1 Dep. of Bioeng., The University of Tokyo, 2 ISSP, The University of Tokyo, 106-1 Shirakata,

Tokai, 319-1106
also in SLS regime for a gel having the same
molecular weight, indicating a self-similar
network structure in Tetra-PEG gels. (4)The upturn in scattering intensity is assigned to be a clustered structure as is often observed in PEG in water and/or network defects. The upturn is suppressed byincreasing Mw due to a formation of moreregular network structures with less inhomogeneities. It is concluded that Tetra-PEG
gels have no noticeable entanglements, buthave self-similar structures with respect toMw , and form ideal tetrafunctional polymer networks, provided that Mw is highenough (≈ 40 × 103 ).

-1

I(q) [cm ]

102

(a)

Tetra-PEG gel-5k
SANS

100

10-2

17

10

I(q) / 0 • 2 [cm-3]

SLS

101
f0 = 0.0354
f0 = 0.0531
f0 = 0.0709
f0 = 0.0886
f0 = 0.106
f0 = 0.124

10-1

x f

A series of model networks consistingof polyethylene glycol (PEG), Tetra-PEG
gels, have been prepared and their structure and dynamics have been investigatedby small-angle neutron scattering (SANS),
Static light scattering (SLS) and Neutron
Spin Echo (NSE). The Tetra-PEG gels wereprepared by cross-end coupling of two
types of tetra-arm PEG macromers with themolecular weights, Mw , of 5 to 40 × 103
g/mol. In SANS regime, the structure factors of both as-prepared and swollen gelscan be represented by Ornstein-Zerniketype scattering functions and be superimposed to single master curves with the reduced variables, ξq and I (q)/φ0 ξ 2 , irrespective of the molecular weight of tetraPEG, where q, ξ, I (q), and φ0 are the magnitude of the scattering vector, the correlation length, the scattering intensity, andthe polymer volume fraction at preparation, respectively. In SLS regime, however, a power-law type upturn was observed, indicating the presence of PEG
chain clusters. Interestingly, these inhomogeneities disappear by swelling.// The following facts are disclosed: (1) The TAPEG
macromer solutions, consisting of tetraarm polymer chains, are not interpenetrable due to the presence of end groups,
and the individual chains behave as hard
spheres. Hence, the radius of gyration,
Rg scales with φ0−1/3 . (2) The structure
factors of both as-prepared and swollen
gels in SANS regime can be represented
by Ornstein-Zernike type scattering functions and be superimposed to single master curves, irrespective of the molecularweight. (3) However, in SLS regime, asteep upturn was observed in SANS curves
in as-prepared Tetra-PEG gels, indicating
the presence of PEG chain clusters or defects. A master-curve relationship holds

6

10-3

2

3

4 5 6

10-2

2

3 4 5 6q [Å-1]

(b)

2

10-1

Tetra-PEG gel-5k
f0 = 0.0354
f0 = 0.0531
f0 = 0.0709
f0 = 0.0886
f0 = 0.106
f0 = 0.142

1016
1015
1014

10

-2

10

-1

0

q • x [-]

10

1

10

Fig. 1. (a) SANS as well as SLS intensity functions
for Tetra-PEG gel-5k prepared at various concentrations, φ0 s. The missing q region is indicated by thevertical dashed line. (b) Scaled plots, I (q)/φ0 ξ 2 andξq.

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1-5-15Chain conformation of highly-puriﬁed ring polymer in bulk and the blending eﬀectof linaer polymers
Atsushi takano, Yutaka Ohta and Yushu Matsushita
Nagoya University
A ring polymer has characteristic structurewith no chain ends and it is considered asa model polymer to clarify the topologicaleffect on physical properties such as chain
conformations, viscoelastic properties andso on. Recently the molecular weight (Mw)dependence of radius of gyration (Rg) forring polymers in bulk is of much interest byscientists theoretically and experimentally.
The Rg of polymer molecule can be scaledwith the Mw in the general form as
Rg ? Mwv
The v value for linear polymers in bulk
is 1/2, where the polymer chains can be
regarded as an ideal chain. On the other
hand, it is considered that the conformations for ring polymers in bulk do notobey the ideal chain statistics because thechain ends are connected. Arrighi et al. reported that the v value for ring polymers
in melt is also 0.42 by SANS experiment,
though the molecular weights of the ring
polymers are fairly low as M<10k, andmoreover the amount of linear contamination was not clariﬁed [1]. In this study
we have synthesized a series of highlypuriﬁed ring polystyrenes with molecular weights ranging 16k<Mw<380k, theradii of gyration were measured in bulk bysmall-angle neutron scattering (SANS) andmolecular weight dependence of Rgs of thering polymers were investigated.
Synthesis of ring polystyrenes was
carried out by the same procedures reported previously [2]. Puriﬁed ring polymers were obtained ﬁrstly by SEC fractionation and secondly by fractionation using liquid chromatography at the critical condition (LCCC). Four pair of hydrogenated/deutrated highly-puriﬁed rings
with molecular weights of 16k, 40k, 110k
and 380k were prepared. The purities ofrings were checked by LCCC and it was

conﬁrmed that all ring samples have highpurity over 95%. SANS measurements ofbulk ﬁlm samples were performed by using SANS-U spectrometer (ramda=0.70nm)
at ISSP, Tokai.
Relationship between Rg and Mw forring
polymers are plotted in Figure 1. It was
found that Rg of ring polymer can be scaledwith Mw as Rg ∝ Mw0.38 in bulk, whichwere relatively weaker molecular weight
dependence than linear ones. This scaling
exponent is slightly smaller than the experimental result by Arrighi et al, and locatedbetween the predicted value by Cates andDeutsch (v =2/5) [3] and the other one by
Suzuki et al. (v =1/3) [4].
References[1] V. Arrighi et al., Macromolecules 37,
8057-8065 (2004)[2] D.Cho et al., Polym. J. 37, 506?511 (2005)[3] E. Cates and J. M. Deutsch, J. Phys. 47,
2121 (1986)[4] J.Suzuki et al. J. Chem. Phys. 129, 034903(2008)

Fig. 1. Figure 1. Relationships between Rg and Mw
of ring polystyrenes in bulk.

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JAEA-Review 2013-040

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1. Neutron Scattering- 135 -

6 Biology

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JAEA-Review 2013-040

1-6-1
Neutron Diﬀraction Study of Porcine Pancreatic Elastase under Active
Conditions
T. Tamada, T. Kinoshita1 , T. Ohhara, K. Kurihara, T. Tada1 and R. Kuroki
1

Quantum Beam Science Directorate, JAEA, Tokai, Ibaraki 319-1195
Graduate School of Science, Osaka Prefecture University, Sakai, Osaka 599-8531

Porcine pancreatic elastase (PPE) is a serine protease classiﬁed in the chymotrypsin
family that is possibly the most destructive
enzymes having the ability to degrade virtually all of the connective components in the
body. Uncontrolled proteolytic degradation
by pancreatic elastase (EC 3.4.21.36) causes
the fatal disease pancreatitis. We have already determined the complex structure between PPE and its peptidic inhibitor at JRR3 in JAEA by neutron crystallography.1),2)This neutron structure elucidated the tetrahedral intermediate state of catalysis by serine
protease. For further clariﬁcation of catalytic
mechanism of serine protease, we carried out
the neutron diﬀraction analysis of PPE onlyat active conditions (pD8.0).Last ﬁscal year,
we collected the 2.3 Å neutron data using acrystal with a size of 1.3 mm3 . Here we report
the collection of higher resolution data usinga larger crystal of PPE.
A macro-seeding procedure was repeatedly
performed during three months by adding mix
solution of protein and precipitant in deuterated buﬀer (pD8.0) to a seed crystal prepared under acidic condition (pH5.0). Finally, a seed crystal was grown to the size of
3.3 mm3 . Diﬀraction data were collected atroom temperature using monochromatic neutron beam (λ = 2.9 Å) and recorded on aneutron imaging plate on BIX-3 diﬀractometer at JRR-3 in JAEA. The total rotation
range of 86.4˚was covered by 288 oscillation
images with exposure time of 4 h./image bystep scanning method with an interval angleof 0.3˚. Data were processed with the programs DENZO and SCALEPACK. Full data
set was integrated and scaled to 1.9 Å resolution. The number of observed reﬂections was
31,974 which were merged into 16,094 uniquereﬂections with an Rmerge of 0.093 and a
原子炉：JRR-3

装置：BIX-3(1G-A)

completeness of 87.1 %. Crystallographic reﬁnement of the 1.9 Åneutron structure was
perfomed by the program PHENIX in a joint
reﬁnement with 1.3 ÅX-ray diﬀraction datacollected at room temperature from the same
crystal. The ﬁnal model, including a total of
4,241 atoms (H and D atoms: 2,195, non-H
and D atoms: 2,046) was reﬁned to a crystallographic R-factor of 17.2 % (free R-factor =22.3 %) to 1.9 Å resolution. Hydrogen positions at active site was clearly conﬁrmed on
nuclear densities (Figure 1).

Figure 1: Nuclear densities at active sites. The F oF comit map were caculated without H/D atoms. Deep:+3σ, Light: -2.5σ.

References
1) T. Kinoshita, T. Tamada, K. Imai, K. Kurihara,
T. Ohhata, T. Tada, R. Kuroki : “Acta Crystalgr.”, F64, 217 (2008).
2) T. Tamada, T. Kinoshita, K. Kurihara, M. Adachi,
T. Ohhata, K. Imai, R. Kuroki, T. Tada : “J. Am.
Chem. Soc.”, 131, 11033 (2009).

分野：中性子散乱（生物）- 137 -

JAEA-Review 2013-040

1-6-2
Dynamic of Water Molecule in a Crowding Environment Studied by Neutron
Quasi-Elastic Scattering
H. Nakagawa
Quantum Beam Science Directorate, JAEA, Tokai, Ibaraki 319-1195

原子炉：JRR-3

装置：LTAS(C2-1)

in which an organism loses virtually all of its
free intracellular water and ceases metabolism
but remains capable of revival after rehydration [2]. This study indicates that neutron
scattering experiment is useful for studying
water dynamics in the cell with crowding condition. Therefore, the dynamics of cell water
should be examined in more detail not onlyin vitro but also in vivo.
]Vem[ gnirettacs citsale-isauq fo htdiw

The cytoplasm of a living cell is crowdedwith small molecules and macromolecules[1]. The molecular crowding aﬀects proteinprotein interactions and diﬀusion, which are
relevant to the biologically important phenomena in the cells. The dynamics of water molecule is aﬀected by a conﬁned environment. Thus, hydration water dynamics inbiological cells should be aﬀected by molecular crowding. The hydration water should
be closely related to protein-protein association. Here, I studied the water dynamics inthe crowding condition by inelastic neutron
scattering experiment. I examined eﬀects ofmolecular crowding on water molecule by using glycerol, which is concentrated solution ofa model crowding agent . I studied the diffusive character of water by quasi-elastic neutron scattering with various concentrations ofglycerol solution. The scattering from waterin glycerol solution was estimated by the subtraction of the scattering proﬁle of D2O solution with deutrated glycerol from the H2O
solution with deutrated glycerol. The quasielastic scattering experiments were performed
with the triple axis spectrometer, LTAS, in
the JRR-3M reactor in Tokai with an energy resolution of about 90 μ eV. The widthof quasi-elastic scattering (Γ) was estimatedﬁtted with single Lorentzian model function
convoluted with the resolution function ofspectrometer, which was obtained from vanadium measurements. Figure shows the Γ atvarious mass fractions of water. Γ gradually
increases as a function of a mass fraction ofwater. This suggests that the dynamics ofwater molecule at higher glycerol concentration would be restricted by the more crowded
environment. The protein function needs mobility of hydration water around protein surface. Some organisms can survive at drought
environment by a strategy of anhydrobiosis,

0.5
0.4
0.3
0.2
0.1
0.0
0.0

0.2

0.4

0.6

0.8

mass fraction of water

1.0

Figure 1: The width of quasi-elastic scattering as afunction of mass fraction of water.

References
1) R.J. Ellis et al. :“Nature”,425, 27(2003).
2) M. Sakurai et al. :“PNAS”,105, 5093(2008).

分野：中性子散乱（生物）- 138 -

JAEA-Review 2013-040

1-6-3

Determination of Lipid Transfer Activity of Phospholipid Transfer Proteins by
Time-Resolved SANS
M. Nakano(A), M. Fukuda(A), Y. Wada(A), M. Kaihara(A), H. Endo(B)(A)Graduate School of Pharmaceutical Sciences, Kyoto Univ., (B)ISSP-NSL, Univ. of Tokyo
Biological membrane trafﬁc is important for cell growth, development
and survival [1].
Quantitative comprehension of membrane lipid dynamics is therefore a key challenge in biophysics and cell biology. Phosphatidylcholine/phosphatidylinositol transfer proteins (PITPs) play crucial roles in intracellular vesicular transport and in regulation of phospholipid synthesis. PITPs haveshown to transport phosphatidylcholine
and phosphatidylinositol between vesicles
in vitro. However, the relevance of thelipid transfer activity to its cellular functions remains unclear.
We have established the method determining the rates of interbilayer exchange
and ﬂip-ﬂop of phospholipids in large
unilamellar vesicles (LUVs) by timeresolved small-angle neutron scattering(TR-SANS) technique [2]. This method
has demonstrated that 1-palmitoyl-2oleoylphosphatidylcholine (POPC) represents very slow dynamics: The half timeof the intervesicular transfer of POPC isca. 90 h and that this lipid do not ﬂip-ﬂop
spontaneously [3]. In this study, lipid
transfer was monitored by TR-SANS in thepresence of PITP to determine the lipid
transfer activity of the protein.
LUVs (diameter of ca. 100 nm) consisting of deuterated (D-LUV) or hydrogenated POPC (H-LUV) were prepared by
extrusion method. Sec14, a PITP from Saccharomyces cerevisiae was provided fromProf. V. Bankaitis (Univ. North Carolina at
Chapel Hill). TR-SANS measurement wasstarted immediately after mixing equivalent volume of D- and H-LUVs (35 mM
POPC) in Tris buffered saline with 30%
D2O in the presence and absence of Sec14.
Time-course of the normalized contrast
was calculated from the scattering inten-

sity.
Contrast decay proﬁles for POPC LUVs
are shown in Fig. 1. The decay became
faster as the concentration of Sec14 increased, suggesting that Sec14 transports
POPC between particles. The decay proﬁles could be ﬁtted by double-exponentialfunction but not by single-exponentialfunction. This implies that the membrane
afﬁnity of the protein is different between
lipid-bound and lipid-free states.
References[1] J. C. M. Holthuis and T. P. Levine, Nat.
Rev. Mol. Cell Biol. 6 (2005) 209.
[2] M. Nakano, M. Fukuda, T. Kudo, H.
Endo, T. Handa, Phys. Rev. Lett. 98 (2007)
238101.
[3] M. Nakano, M. Fukuda, T. Kudo, N.
Matsuzaki, T. Azuma, K. Sekine, H. Endo,
T. Handa, J. Phys. Chem. B 113 (2009) 6745.

Fig. 1. Contrast decays of POPC LUVs after mixing
D- and H-LUV at 37 °C in the absence and presenceof Sec14 with different concentrations. Solid curves
are ﬁtting curves of double-exponential function.

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
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JAEA-Review 2013-040

1-6-4

Structual Investigation on Proteasome α7 ring in solution
Masaaki Sugiyama, Eiji Kurimot*, Toshiharu Fukunaga, Koichi Kato*
Research Reactor Institute Kyoto University, Nagoya City University*
The 20S proteasome is known as a degrading factory for an unnecessary protein and then plays a very important rolein protein-metabolic and immune systems.
This huge complex protein has a hollow
cylindrical shape consisting of four rings,
α, β, β, α-rings. Both α and β rings are heptamers with α1-α7 subunits and β1-β7 ones,
respectively. It has been reported that α7
subunits in the solution also make a (homo)
heptamer ring similar to a true (hetero) αring and then two rings make one dimer[1],which we call ”double ring”. But the detailed structure of this double ring is notclariﬁed. Therefore, we perfomed SANS
experiment of proteasome α7 ring solution
in order to solve the packing structure indetail.
The SANS experiment was carried out
with SANS-U spectrometer of ISSP of University of Tokyo installed at JRR-3 of JAEA.
The sample was proteasome α7 solution
with the concentration of 5mg/ml. The observed SANS intensity was corrected forbackground, cell, buffer scattering, andtransmission factor.
Fihure 1(a) shows structural parametersof packing structure of double ring: L is aradius of a ring and D is a distance between
two rings. Figure 1(b) shows the observed
SANS proﬁle and some simulated SANS
curves of which L is 42 Å and D is varied
from 35 to 45 Å. As you can see from Fig. 2,
the best compromised values are D of 35 Å
in L of 42 Å: With the other value of L, theSANS curves show the larger divation in
all D values. With this structure model,
analysis of a subunit exchange kinetics are
now in progress.

K.Mori, and T.Fukunaga, Nucl.
Method A, 600 (2009) 272-274.

Inst.

Fig. 1. Figure 1. (a)Structure parameters of a double
ring.(b) Experimental and simulated SANS proﬁlesof proteasome α ring.

Reference81) M.Sugiyama, K.Hamada, K.Kato,
E.Kurimoto, K.Okamoto, Y.Morimoto,
S.Ikeda, S.Naito, M.Furusaka, K.Itoh,
Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
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1.  ୰ ᛶᏊᩓ஘ 7 ᇶ♏≀⌮Ꮫ㺃୰ᛶᏊගᏛ 

1. Neutron Scattering

7 Fundamental Physics㺃Neutron
Optics- 141 -

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JAEA-Review 2013-040

1-7-1

Development of Jamin-Type Cold Neutron Interferometerwith Complete Path Separation
Y. Seki(A), M, Kitaguchi(B), M. Hino(B), H. Funahashi(C),Y. Otake(D), K. Taketani(E), H. M. Shimizu(E)(A)Kyoto Univ., (B)KURRI, (C)Osaka Electro-Communication Univ., (D)RIKEN, (E)KEK
We have succeeded in developing a newlarge-dimensional multilayer interferometer for cold neutrons, in which the twopaths are completely separate for the ﬁrst
time.
Our Jamin-type interferometer (Fig. 1(Top)) consists of two “beam splitting
etalons” (BSEs) [1], which contains two
multilayer mirrors parallel to each otherwith a set of spacers. The BSEs enable us toalign the four independent mirrors with required accuracy. The thickness of the spacers of previous BSEs were, however, only
9.75 μm, a distance much narrower than
the incident beam width, so that the twopaths of the interferometer almost overlapped. This disadvantage limited rangeof the application of multilayer interferometer.
To solve this problem, we have fabricated new BSEs with 189 μm spacers. A demonstration of the interferometer with these BSEs was performed at
the monochromatic cold neutron beamline
MINE2 on the JRR-3 reactor in JAEA. The
mean wavelength of the beam was 0.88
nm with a bandwidth of 2.7% in FWHM.
As shown in Fig. 1 (Middle), the beam
proﬁle conﬁrms that the two paths of
the interferometer are completely separate.
We have also observed clear interference
fringes with a contrast of 67 ± 4% at maximum (Fig. 1 (Bottom)). The interferograms
were obtained by scanning the phase of theoscillating magnetic ﬁeld in π ﬂipper.
With complete path separation, we canperform various experiment in some conﬁgurations: the insertion of phase objects
into the one-side path, the enclosure of devices between the two paths, and phase differences depending on the area enclosedby the two paths. One of such exper-

iments is the precision measurement of
the Aharonov-Casher (AC) effect, in whichelectrodes to induce the phase difference
are inserted between the two path. Our interferometer with long paths is more sensitive to the AC phase than silicon neutroninterferometers. We are also trying to apply
BSEs to white neutron beam with supermirrors fot high intensity measurements of
the AC effect at J-PARC.
References [1] M. Kitaguchi et al.: Phys.
Rev. A 67 (2003) 033609.

Fig. 1. (Top) Jamin-type interferometer with two
BSEs, (Middle) Beam proﬁle of the two separated
paths between the two BSEs, (Bottom) Intererence
fringes with a contrast of 67%.

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
Report Number: 1095

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JAEA-Review 2013-040

1-7-2

Development of cold neutron interferometer for pulsed source
M. Kitaguchi(A), M. Hino(A), H. Funahashi(B), Y. Seki(C), K. Taketani(D), and
H.M.Shimizu(D)(A)KURRI, (B)Kyoto Univ., (C)RIKEN, (D)KEK
Neutron interferometry is a powerful technique for studying fundamental physics. A
large dimensional interferometer for longwavelength neutrons has the advantage toincrease the sensitivity to small interactions. Such a kind of interferometer was realized by using multilayer mirrors. Multilayer mirror is suitable for Bragg reﬂectionof cold neutrons. We demonstrated Jamintype interferometer for cold neutrons using
beam splitting etalons (BSEs), which enables us to align the four independent mirrors within required precision [1]. The BSE
contains two parallel mirrors. A coupleof the BSEs in the Jamin-type interferometer separates and recombines the two paths
spatially. A neutron supermirror is one of
the multilayer with continuous lattice constants, which reﬂects the wide range of
the wavelength of neutrons. The BSEs withneutron supermirrors enable us to arrange
Jamin-type geometry of the interferometer for white neutrons. The interferometercan be applied to pulsed neutrons by using the BSEs with supermirrors. Such interferometer increase the neutron counts forhigh precision measurements, for example,
Aharonov-Casher effect. Wevelength dependence of the interaction in the interferometer also can be measured by the time of
ﬂight detection for pulsed neutrons.
We have already performed test experiments using polychromatic mirrors withtwo different lattice constants. We fabricated two polychromatic mirrors with intermediate gap layer on the top of Si substrate continuously. This device enabled
us to provide two separated paths of the
Jamin-type interferometer for two wavelength of neutrons. We observed clear interference fringes at the two different incident angles, which were corresponding to
the two multilayers in the polychromatic

mirror, at cold neutron beam line MINE2 at
the JRR-3 reactor in JAEA.
Polarization interferometer was used forthe performed experiments. One of the twomirrors on the BSE is a polarizing mirror
and each path corresponds to a spin component. We have installed the polarization
devices into cold neutron beam line BL05
low divergence branch in MLF at J-PARC.
We have observed TOF interference fringes
for pulsed neutrons by using the devices
which synchronized with neutron production, without BSEs. The experiments using
BSEs with supermirrors are started now.
We are also planning the experiments using the interferometer as one of fundamental physics investigations at J-PARC.
[1] M. Kitaguchi, et. al., Phys. Rev A 67
(2003) 033609.

Fig. 1. TOF interference fringes at BL05 in MLF at
J-PARC

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
Report Number: 1125

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JAEA-Review 2013-040

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1. Neutron Scattering- 145 -

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JAEA-Review 2013-040

1-8-1
Inﬂuence of Interfacial Roughness Correlation on Reﬂectivityof Neutron Multilayer Mirrors
R. Maruyama, D. Yamazaki, T. Ebisawa, and K. Soyama
J-PARC Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195

Multilayer structures consisting of alternating Ni and Ti layers are widely used for neutron optical elements such as supermirrors.
Deposition techniques such as adding various
materials to the Ni and Ti layers using magnetron and ion-beam sputtering have been
employed and demonstrated to be eﬀectivein the realization of higher reﬂectivity, larger
critical angle, and lower diﬀuse intensity.
We have tested the technique of adding carbon atoms to the nickel layer and demonstrated that the reﬂectivities at critical angles for NiC/Ti supermirrors with m = 3, 4,
and 6 are improved up to 0.90, 0.80, and 0.40,
respectively1) . The diﬀuse intensity form a
NiC/Ti supermirror was found out to be lower
than that from a Ni/Ti supermirror by morethan one order of magnitude. In order toobtain insight into the mechanism that controls the diﬀuse intensity from a supermirror, we have investigated the crystal and interface structure of Ni/Ti and NiC/Ti multilayers and demonstrated that a multilayer
with a large vertical correlation length anda small lateral correlation length eﬀectively
suppresses the diﬀuse intensity from a supermirror. This result implies that the lateral and vertical correlations and the degreeof jaggedness as well as the interface roughness need to be taken into account in thereﬂectivity analysis of a neutron multilayer
mirror2) . Figure 1 shows the reﬂectivity proﬁles of Ni/Ti and NiC/Ti multilayers consisting of 350 layers with a distribution of bilayer thickness of 10 ≤ d ≤ 17 nm. The reﬂectivity of the NiC/Ti multilayer is slightly
higher than that of the Ni/Ti multilayer by
0.02 ∼ 0.03. This tendency is also seen in
the reﬂectivity proﬁles of the supermirrors.
If this results from the diﬀerence in the interface roughness of the Ni/Ti and NiC/Ti
multilayers, a larger diﬀerence in the reﬂec原子炉：JRR-3

装置：SUIREN(C2-2)

Reflectivity

10

0

10

-1

10

-2

1.00
0.90
0.80
0.70
0.40

10

0.50

0.60

0.70

-3

0.2

0.4

0.6
0.8
-1
q z / nm1.0

1.2

Figure 1: Neutron reﬂectivity proﬁles of the Ni/Ti(•) and NiC/Ti (◦) multilayers consisting of 350 layers with a bilayer structure in which thickness is distributed in the range 10 ≤ d ≤ 17 nm. The solid line
indicates the calculated reﬂectivity proﬁle. The inset
shows the reﬂectivity proﬁles at the Bragg peak on an
enlarged scale.

tivity should be found at a higher momentum
transfer range. Since the reﬂectivity diﬀerence between the multilayers is very small at
the higher momentum transfer range up to
1.2 nm−1 , reﬂectivity diﬀerence should be attributed to other factors such as the diﬀerencein the lateral and vertical correlation length,
not to the diﬀerence in the interface roughness.
In order to investigate the eﬀect of interfacial roughness correlation to neutron reﬂectivity, formulas have been derived according to the perturbation theory using thesecond-order distorted wave Born approximation (DWBA)3, 4) . In this study, the eﬀect ofinterfacial roughness correlation on neutron
reﬂectivity in a neutron multilayer mirror isinvestigated using the reﬂectivity calculation
based on the distorted wave Born approximation.
The derivation of formulas for specular reﬂection is shown in our previous publication5) .
Neutron reﬂectivity calculation was per分野：中性子散乱（装置）- 147 -

JAEA-Review 2013-040

formed for diﬀerent parameters of the interface where the sample was assumed to be a
Ni/Ti multilayer consisting of 30 layers witha bilayer thickness of 10 nm. The eﬀect ofinterfacial roughness is shown in Fig. 2(a).
The solid and broken lines, respectively, indi-

Reflectivity

10

0

10

-1

10

-2

10

-3

10

-4

10

-5

0.50
0.40
0.30
0.20
0.62

10

Reflectivity

0.68

0.2

(a)

(b)

0.65

0.4
-1
q / nm

0.6

0.8

0.4
-1
q / nm

0.6

0.8

0

10

-1

10

-2

10

-3

10

-4

10

-5

0.44
0.40
0.36
0.32
0.62

0.65

0.2

0.68

Figure 2: Calculated reﬂectivity proﬁles for a Ni/Ti
multilayer consisting of 30 layers with a bilayer thickness of 10 nm. (a) solid line, σ = 0; broken line, theNC factor with σ = 0.60 nm; dotted line, the perturbation up to l = 1 with σ = 0.60 nm. (b) solid line, theperturbations up to l = 1 with σ = 0.60 nm; broken
line, the perturbations up to l = 2 with σ = 0.60 nm,
ξ = ∞, and c⊥
ji = 0; dotted line, the perturbations
up to l = 2 with σ = 0.60 nm, ξ = ∞, and c⊥
ji = 1.
The insets show the reﬂectivity proﬁles at the Bragg
peak on an enlarged scale.

cate the reﬂectivity proﬁles for the interface
roughness σ = 0 and 0.60 nm, which are obtained by the recursive formalism6) . The interface roughness is included in the Fresnel
coeﬃcients proposed by Névot and Croce7) .
These are compared with the perturbation up
to l = 1 (very small value of the lateral correlation length ξ ) with σ = 0.60 nm (the dottedline). The reﬂectivity proﬁle of the ﬁrst per-turbation is in good agreement with that of
the recursive formalism with the NC factor.
This may be reasonable since the roughnessof the individual interfaces is independently
taken into account in the perturbation up tol = 1, which can be regarded as the same
treatment as the multiplication of the NC factor.
The eﬀect of roughness correlation is shownin Fig. 2(b). The reﬂectivity proﬁle obtainedby the perturbation up to l = 1 (the solidline) is compared with those up to l = 2
with ξ = ∞, c⊥ji = 0 (the broken line) andξ = ∞, c⊥=1(the dotted line), where c⊥jiji
is the replica factor between interfaces j andi (j = i). As expected in the above derivation, the diﬀerence in reﬂectivity is seen forξ = ∞ where the perturbation with l = 2
cannot be neglected. The decrease in reﬂectivity by 0.05 in the Bragg peak at q = 0.65
nm−1 is observed for the perfectly correlated
interfaces (c⊥ji = 1), whereas the eﬀect of theroughness correlations within the same interface on reﬂectivity is very small (c⊥ji = 0).
Neutron reﬂectivity calculation based on
the second-order DWBA has been performed
for a Ni/Ti multilayer. The eﬀect of theroughness correlation on reﬂectivity was obtained for the extreme conditions of the lateral and vertical correlations. The reﬂectivity
decreases only in the Bragg peak for perfectly
correlated interfaces, whereas the decrease inreﬂectivity is very small for interfaces withno vertical correlation. The calculations need
to be performed for diﬀerent sample parameters to test the applicability of the formulas
to measured reﬂectivity data.
References
1) R. Maruyama, et al. :“Nucl. Instrum. Methods
Phys. Res. A”, 600, 67(2009).
2) R. Maruyama, et al. :“J. Appl. Phys.”, 105, 083527(2009).
3) D.K.G. de Boer :“Phys. Rev. B”, 49, 5817(1994).
4) D.K.G. de Boer :“Phys. Rev. B”, 53, 6048(1996).
5) R. Maruyama, et al. :“J. Phys. Conf. Series”, tobe published.
6) L.G. Parratt :“Phys. Rev.”, 95, 359(1954).
7) L. Névot and P. Croce :“Phys. Rev. Appl.”, 15,761(1980).

- 148 -1-8-1

JAEA-Review 2013-040

1-8-2
Development of a High-Spatial-Resolution Neutron Detector with
Wavelength-Shifting Fibre Read Out
T. Nakamura, M. Katagiri, K. Toh, K. Sakasai and S. Soyama
Neutron Instrumentation Section, Materials and Life Science Division, J-PARC Center, Tokai
319-1195

The neutron image detector for energyselective neutron radiography at a pulsed
source is one of the challenging subjects because a high spatial resolution and temporal
resolution are required for time-of-ﬂight measurements. The speciﬁcations required forsuch detectors are generally a spatial resolution of better than 50 μm, a temporal resolution of several μs, a gamma sensitivity of lessthan 10−5 and a detector eﬃciency of 50 %for thermal neutrons. The goal of our development is to develop a detector that fulﬁlls
such speciﬁcations.
To achieve a spatial resolution less than 1
mm we introduced a ﬁbre-optic taper(FOT)
into the iBIX detector 1) . The neutrondetection head of the iBIX detector consistedof the scintillator and the wavelength-shifting(WLS) ﬁbres for light collection. The FOT
was implemented in between the scintillator
and WLS ﬁbres to magnify the light image,thus improving the spatial resolution.
To increase the neutron-sensitive area we
implemented a largersized FOT and a increased number of read-out ﬁbers. A number of ﬁbers in the x and y direction wereincreased from 16 to 128 whilst the types of
WLS ﬁbers, BCF99MC and BCF92AMC, remained the same as before 2) . The neutronsensitive area bacame 314 mm2 . This detective area would fulﬁll most of the requirements in our experiments. The size of theeﬀective pixel on a scintillator screen became
0.167 × 0.167 mm2 with the aid of the FOT
whilst the physical size of the pixel was determined by the side length of the ﬁbre, which
was 0.5 × 0.5 mm2 .
The measurement of the beam edge proﬁlerevealed that the prototype detector exhibited a spatial resolution of 0.26 ± 0.07 mm.
This result was consistent with that with the
原子炉：JRR-3

装置：CHOP(C2-3-3)

demonstrator detector 2) . On the other handthe detector eﬃciency decreaed to 60% relative to that with the demonstrator detector
for a neutron wavelength of 4 A. This decrease
was understood by the larger light loss for the
longer FOT, i.e. less light collection eﬃciency
for larger FOT.
Figure 1 shows the measured neutron beam
proﬁle when the detector was covered with thecadmium mask with several holes. The detector clearly measured the beam proﬁles witha resonable spatial resolution, demonstrating
the detector with a sperior imaging capability.

Figure 1: Neutron beam proﬁle measured with theCadmium mask with holes.

References
1) T. Hosoya, et. al: Nucl. Instrum. Meth. A, 600,
217(2009).
2) T. Nakamura, et al: Nucl. Instrum. Meth. A,
604, 158(2009).

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JAEA-Review 2013-040

1-8-3

Visualization of Electric Current by Neutron Spin Phase Contrast Imaging
S. Tasaki, Y. Iwata, T. Tanaka, Y. Abe, M.Hino(A)Department of Nuclear Engineering, Kyoto University, ( A) Research Reactor Institute, Kyoto
University
Neutron spin phase contrast (NSPC)
imaging is a method to visualize the magnetic ﬁeld integral along the trajectory ofneutron. The principle of NSPC is to measure additional phase difference between
spin eigenstates of Larmor precessing neutron, by means of neutron spin interferometry. In NSPC imaging, neutron intensity changes sinusoidally,via the phase difference of incident neutron. When magnetic ﬁeld exist on the way of neutron, thesinusoidal curve is shifted, and the shift
is proportional to the magnetic ﬁeld integral. Moreover, the contrast (visibility) of
the sinusoidal curve may change depending on the homogeneity and direction of
the magnetic ﬁeld. In the present study, weapply NSPC method to measure magnetic
ﬁeld induced by electric current, to develop
NSPC imaging to visualize electric current
distribution.
As a sample, an Al-cylinder with 10mmdiameter and 20mm-length sandwiched by
Cu plate is adopted. The electric current
ﬂows along with the cylinder. Such current produces the magnetic ﬁeld proportional and inversely proportional to the distance from the center of the cylinder, insideand outside of the Al-cylinder, respectively.
Neutron experiments were performed at
C3-1-2-2(MINE-2) beam port of JRR-3M in
JAEA. Wavelength of the neutron beam is
0.88nm (λ/δλ =2.7%), available beam sizeis 10mm in width and 30mm in height. Incident neutron is polarized vertically with
5Q-supermirror polarizer fabricated with
Ion Beam Sputtering system in KUR. Thenthe spin of the neutron is half ﬂipped withresonance neutron ﬂipper. In the middleof the set-up, PI-ﬂipper is installed in orderto cancel outer magnetic ﬁeld and to introduce phase difference φ between two spinstates of neutron. The sample is locatedafter the PI-ﬂipper and then PI/2-ﬂipper
and spin analyzer is set for analyzing thephase of neutron spin wave. Neutron spin
analyzer is a V-shape polarizer with 5Qpolarizing supermirror and the transmitted
neutron is measured with 2D-RPMT with
Li-glass scintillator. Interference fringe is
obtained from the change of neutron intensity via the phase between neutron spinstates.
An example of measured results isshown in Fig.1.
The electric current
through Al-rod is 7.5A. The measurements
were performed for other values of φ, andthe phase induced by the magnetic ﬁeld
caused by the electric current is to be analyzed.

Fig. 1. An example of measured result. Neutron distribution changes as the phase difference between
two spin eigenstates of neutron, introduced via resonance spin ﬂippers.

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
Report Number: 1135

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JAEA-Review 2013-040

1-8-4

Development of MIEZE spectrometer for pulsed neutrons
M. Kitaguchi(A), M. Hino(A), Y. Kawabata(A), S. Tasaki (B), R. Maruyama(C), T.
Ebisawa(C)(A)KURRI, (B)Kyoto Univ., (C)JAEA
Neutron spin echo (NSE) is one of thetechniques with the highest energy resolution for quasi-elastic scattering by measuring rotation of the neutron spin[1]. In neutron resonance spin echo (NRSE), two resonance spin ﬂippers (RSFs) replace a homogeneous static magnetic ﬁeld for spin precession in the conventional NSE[2]. MIEZE
spectrometer is a kind of resonance spin
echo, which has the advantage to investigate the dynamics of magnetic samples, because of selectivity of the magnetic scattering. We have already demonstrated MIEZE
spectrometer with high frequency RSFs.
Clear MIEZE signals was observed at cold
neutron beam line MINE1 in JRR-3 at
JAEA. The effective frequency was 600 kHz
and the contrast of the MIEZE signal was
0.58[3].
Now we have applied the MIEZE to pulsed
source. The RSFs and the devices for
MIEZE spectrometer was set on a beam
branch of BL05 NOP beam line in MLF at
J-PARC. At the branch pulsed cold neutron
beam with the wavelength from 0.3nm to
1.0nm is provided with ﬁne beam divergence. The RSF can be applied pulsed neutrons by using the dumping amplitude of
RF magnetic ﬁeld synchronized with thetime of ﬂight of the neutrons[4]. In the caseof pulsed neutrons, the contrast of MIEZE
signal is always high for all time channelof detector because the beam in each wavelength region is monochromatic due to thepulsed source. We observed clear MIEZE
signals with the effective frequency from
0.5 kHz to 600 kHz.
We demonstrated MIEZE spectrometer forpulsed neutrons. We are continuing todevelop MIEZE spectrometer for pulsed
source for practical uses. We are now discussing to build a neutron spin echo spectrometer at J-PARC[5].

REFERENCES:[1] F.Mezei, Z. Phys. 255 (1972) 146.
[2] R.Gaehler, R. Golub, Z. Phys. B65 (1987)
43.
[3] M.Kitaguchi, et. al., Physica B, 404(2009) 404.
[4] H.Hayashida, et. al., Nucl. Instr. andMeth. A 574, (2007) 292.
[5] Y.Kawabata, et. al., Nucl. Instr. And
Meth. A574 (2006) 1122.

Fig. 1. MIEZE spectrometer at BL05 and MIEZE signal with the frequency of 0.5kHz

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
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1. Neutron Scattering- 153 -

9 Superconductivity

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JAEA-Review 2013-040

1-9-1
Structural Analysis on Iron-Based Superconductor Pr1111 System with Oxygen
Deﬁciency and Flourine Substitution
K. Kodama1,2 , M. Ishikado1,2 , F. Esaka3 , A. Iyo2,4 , H. Eisaki2,4 and S. Shamoto1,2
1

Quantum Beam Science Directorate, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195
2JST, Transformative Research-Project on Iron Pnictides (TRIP), Tokyo 102-0075
3
Nuclear Science and Engineering Directorate, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195
4
Nanoelectronics Research Institute, National Institute of Advanced Industrial Science and Technology,
Tsukuba, Ibaraki 305-8562

60
50

PrFeAsO 1-x Fx

Tc (K)

40
30
20
10
0
0.0

PrFeAsO1-y
0.1

0.2

δ

0.3

0.4

Figure 1: Tc of PrFeAsO1−y and PrFeAsO1−x Fx determined by measurements of superconducting shielding diamagnetism, are shown by open circles andsquares, respectively.

of PrFeAsO1−y obviously deviates from thecurve of PrFeAsO1−x Fx , indicating that theTc value is not determined only by δ-value, atleast, in so-called 1111 system even if the sys原子炉：JRR-3

装置：HRPD(1G)

PrFeAsO1-y
PrFeAsO1-x Fx

c (Å)

8.62

8.60

8.58

3.985
3.980

a (Å)

In iron-based high-Tc superconductor, socalled 1111 systems, the superconductivity is
induced by the partial substitution of ﬂourine
for oxygen and the oxygen deﬁciency whichdope electrons to conducting bands formed
by Fe 3d orbitals.1) However, several studies
may indicate that the doping level of electrons
is not solitary parameter to control the electronic state and the superconducing transition temperature Tc , and the structural parameters are also important. We have performed sturctural analyses on PrFeAsO1−yand PrFeAsO1−x Fx in order to obtain information on the role of structural parameters
to the electronic state and superconductivity
in the iron-based superconductors.2)
In Fig. 1, Tc of both systems are plotted as functions of electron-doping level, δ,which are determined accurately from the occupancies of O or O1−x Fx sites. Tc -δ curve

3.975
3.970
3.965

0.0

0.1

δ

0.2

0.3

Figure 2: Lattice parameters of a (bottom panel) andc (top panel) of PrFeAsO1−y and PrFeAsO1−x Fx are
shown by the cirlces and squares, respectively. The superconducitng and non-superconducting samples areshown by the closed and open symbols.

tem consists of identical lanthanide element.
In Fig. 2, the lattice parameters a and cof both systems are plotted as functions of
δ. At similar δ-values, the values of a (c) of
PrFeAsO1−y are larger (smaller) than the values of PrFeAsO1−x Fx . We note that even theparent compounds in both systems have different lattice parameters although they hasvery similar composition of PrFeAsO0.989 and
PrFeAsO0.988 . The structural parameters of
FeAs layer are also diﬀerent between both systems with similar δ. These results suggestthat the diﬀerence of structural parameters of
FeAs layer is the origin of the discrepancy of
Tc -δ curves of both systems and the Tc -value
in the 1111 system is sensitive to the structural parameters.
References
1) for example, Y. Kamihara et al. : J. Am. Chem.
Soc. 130, 3296 (2008).
2) Kodama et al. : submitted to J. Phys. Soc. Jpn.

分野：中性子散乱（超伝導）- 155 -

JAEA-Review 2013-040

1-9-2
Doping Dependence of Magnetic Excitation in Fe-based Superconductor
LaFeAsO1−x Fx
S. Wakimoto1,2 , K. Kodama1,2 , M. Ishikado1,2 , M. Matsuda1,2 , R. Kajimoto2,3 , M. Arai2,3 ,K. Kakurai1,2 , F. Esaka4 , A. Iyo2,5 , H. Kito2,5 , H. Eisaki2,5 , and S. Shamoto1,2
2

1
Quantum Beam Science Directorate, JAEA, Tokai, Ibaraki 319-1195
JST, Transforamtive Research-Project on Iron Pnictides (TRIP), Tokyo 102-0075
3
J-PARC Center, JAEA, Tokai, Ibaraki 319-1195
4
Nuclear Science and Engineering Directorate, JAEA, Tokai, Ibaraki 319-11955
Nanoelectronics Research Institute, AIST, Tsukuba, Ibaraki 305-8562

A new Fe-based high-Tc superconductor
LaFeAsO1−x Fx was discovered in 2008 1) .
One of the most important characteristics ofthis system, is the existence of two separated
cylindrical Fermi surfaces (FSs) 2) : one is ahole FS at the Γ-point and the other is an electron FS at the M-point. It has been pointed
out that the magnetic ﬂuctuation arising fromthe nesting between the two FSs plays animportant role in the superconductivity. In
order to test this scenario, we have carriedout neutron scattering experiments using the
LaFeAsO1−x Fx powder samples with x=0.057(Tc = 25 K), 0.082 (Tc = 29 K), and 0.158(Tc = 7 K) to study F-doping dependence ofthe magnetic ﬂuctuation.
LaFeAsO1-xFx

χ"(ω) (μB2/eV/Fe)5(a)x=0.057 (4K)
x=0.057 (37K)
x=0.082 (4K)
x=0.158 (4K)

4
3
2

T=37K

1

T=4K

χ"(ω) (μB2/eV/Fe)

0

0

5

10

15

ω (meV)

11 meV

4

20

(b)

3
2

Figure 1 summarizes the imaginary part ofthe dynamical susceptibility χ (ω) in absolute units. Figure 1(a) shows that the χ (ω)
for x = 0.057 and 0.082 have maximum at∼ 11 meV and 4 K, whereas the this maximum does not appear at 37 K, above Tc ,for = 0.057. This behavior is consistent withthe resonance behavior observed in other Febased superconductors 3) . It is remarkablethat the χ (ω) almost vanishes in the overdoped x = 0.158 sample in which the superconductivity is highly suppressed. Figure 1(b)shows the x-dependence of χ(ω = 11 meV),where the data for x = 0 at 140 K is alsoplotted for comparison. Magnetic ﬂuctuations in the superconducting x = 0.057 and0.082 samples are comparable to the x = 0.
However, those are vanished in = 0.158.
In the present system, F-doping provides
electron to the system. Thus the hole FS at
the Γ-point should shrink by doping. This affects the nesting condition between the two
FSs at the Γ- and M-points. Thus the suppression of magnetic ﬂuctuation in the overdoped x = 0.158 sample is owing to thepoor nesting condition by the shrinkage of thehole FS. Our result supports the scenario thatmagnetic ﬂuctuation by the FS nesting plays
an important role in the superconductivity inthis system.

1
0

0

0.05

0.10

0.15

References

0.20

F concentration x

Figure 1: (a) χ”(ω) spectra. (b) Doping dependenceof χ”(ω) at ω = 11 meV and T = 4 K. The data at
x = 0 is measured at just above the Néel temperature
where the spin ﬂuctuation becomes maximum.

原子炉：JRR-3

1) Y. Kamihara, T. Watanabe, M. Hirano, and H.
Hosono: J. Am. Chem. Soc. 130, 3296 (2008).
2) D. J. Singh and M.-H. Du: Phys. Rev. Lett. 100,
237003 (2008).
3) A. D. Christianson, et al., Nature 456, 930 (2008).

装置：TAS-1(2G), TAS-2(T2-4)- 156 -

分野：中性子散乱（超伝導）JAEA-Review 2013-040
















1.  ୰ ᛶᏊᩓ஘ 10 ṧ␃ᛂຊ 

1. Neutron Scattering- 157 -

10 Residual StressThis is a blank page.

JAEA-Review 2013-040

1-10-1
Evaluation of Compressive Deformation Behavior of Zr-Al-Ni-Cu Balk
Metallic Glass Containing ZrC Particles by Neutron Diﬀraction
H. Suzuki, J. Saida1 , J. Katsuyama2 , M. Imafuku3 , H. Kato4 and S. Sato4
Quantum Beam Science Directorate, JAEA, Tokai, Ibaraki 319-1195
Center for Interdisciplinary Research, Tohoku University, Sendai, Miyagi 980-8578
2
Nuclear Safety Research Center, JAEA, Tokai, Ibaraki 319-1195
3
Department of Mechanical Systems Engineering, Tokyo City University, Setagaya, Tokyo 158-8557
4
Institute for Materials Research, Tohoku University, Sendai, Miyagi 980-8577
1

It has been developed that bulk metallic glasses containing hard particles or ﬁbers
exhibit higher strength and higher compressive plasticity as compared with monolithic bulk metallic glasses. In this study,
residual stresses of deformed specimens ofZr55 Al10 Ni5 Cu30 bulk metallic glass containing 10vol%ZrC particles (10%ZrC-BMG)
were measured using neutron diﬀraction technique to clarify relation between plastic deformation and residual stress, and role of ZrCparticle on deformation mechanism was discussed.
Cylindrical specimens, 3mm diameter and
6mm length, of 10%ZrC-BMG compressedwith 1.15% (Sample-2), 1.82% (Sample-3),
1.85% (Sample-4), 4.62% (Sample-5), 5.79%(Sample-6) and 7.79% (Sample-7) in axial direction were prepared including undeformed specimen (Sample-1), as shown in
Fig. 1. Residual stress of only ZrC phasein the 10%ZrC-BMG was derived from latticestrains of ZrC(220) in axial and radial directions of each sample measured using RESA
engineering diﬀractometer.
Figure 2 shows change in residual stressesof ZrC phase relative to residual stress ofsample-1. Tensile residual stress in the order of 300MPa was generated in loading direction of sample-3 just before yielding. According to FEM analysis local plastic deformation occurs around ZrC particles before
macroscopic yielding. It is, therefore, considered that this local plastic deformation caused
generation of tensile residual stresses in ZrC
phase. In further deformation, tensile residual stresses more than 400MPa was generated in Sample-4 and Sample-5, and then the
原子炉：JRR-3

装置：RESA(T2-1)

residual stress was released in Sample-6 owing to plastic deformation with multiple shear
bands across the sample. The plastic deformation proceeded without fracture until deformation level of Sample-7 due to probably
bond-eﬀect of ZrC particles. After reachingstrain at Sample-7, shear fracture occurredin the sample as a result of probably transgranalar fracture in ZrC particles.

Figure 1: Stress-strain relation of 10%ZrC-BMG.
Each sample was deformed up to each engineeringstrain indicated by the sample number.

Figure 2: Changes in residual stress of ZrC phase inaxial and radial directions.

分野：中性子散乱（残留応力）- 159 -

JAEA-Review 2013-040

1-10-2࢚ࣜ࢔ࢹ࢕ࢸࢡࢱ᪉ᘧࡢ୰ᛶᏊṧ␃ᛂຊศᕸ ᐃἲࡢ㛤Ⓨ㔠ἑ኱Ꮫே㛫♫఍Ꮫᇦே㛫⛉Ꮫ⣔㸦㔠ἑ኱Ꮫ኱Ꮫ㝔⮬↛⛉Ꮫ◊✲⛉ᶵ⬟㛤Ⓨ⛉Ꮫᑓᨷ࣭ࢩࢫࢸ࣒๰ᡂ⛉Ꮫᑓᨷ㸧బࠎᮌ ᩄᙪ
㸯㸬ㅖゝⅬࡣ㌿ື᥋ゐ⑂ປࡢホ౯࡟㐺ࡋ࡚࠸ࡿ࡜⪃࠼ࡽ 㕲㐨࡛౑ࢃࢀࡿ࣮ࣞࣝ࠾ࡼࡧ㌴㍯ࡣ㌿ື᥋ゐࢀࡿࠋ⑂ປࢆཷࡅࠊึᮇẁ㝵࡛ࡣ⾲㠃㒊ศ࡟㔠ᒓ⤌⧊ࡢ ࡲࡓࠊWebster ᪉ᘧ࡛ࡣࢧࣥࣉࣝࢆࢫࣛ࢖ࢫࡍ

ረᛶࣇ࣮ࣟࢆ⏕ࡌࠊࡁ⿣Ⓨ⏕ࡸࡑࡢᡂ㛗ࡢཎᅉ࡜ࡿ⤖ᯝࠊᖹ㠃ᛂຊゎᯒࡀྍ⬟࡜࡞ࡾ୰ᛶᏊ sin2ȯ

࡞ࡿࠋࡇࡢࡓࡵࠊ᥋ゐ㠃ࡢ๤㞳ࡸ࣮ࣞࣝᢡᦆࡢ༴

ἲࡸ cosȘἲ㸦ᖹ㠃ᛂຊゎᯒ㸧ࡀ᭷ຠ࡟࡞ࡿࠋᮏ

㝤ࡀቑࡍࠋᑐ⟇࡜ࡋ࡚ࠊิ㌴㏻㐣᫬࡟࠾ࡅࡿ᥋ゐ◊✲ࡣࠊࡇࢀࡽࡢᡭἲࢆ⏝࠸ࡿࡇ࡜࡛ d0 ࡢ⢭ᗘ࡟ᛂຊࠊ᭤ࡆᛂຊࠊ⇕ᛂຊࡢゎᯒࡀ✀ࠎ࡞ࡉࢀ࡚ࡿ

㛵ࡍࡿไ⣙ࢆ኱ᖜ࡟⦆࿴ࡋࡓ᪉ἲࢆ౑⏝ࡋ࡚ࠊᚑࡀࠊࡇࢀࡽࡢࡳ࡛ࡣ⌧㇟ࡢゎ᫂࡟ࡣ⮳ࡽ࡞࠸ࡇ࡜᮶ࠊホ౯ࡀᅔ㞴࡜ࡉࢀ࡚ࡁࡓ㕲㐨ᮦᩱࡢෆ㒊ᛂຊࡀ▱ࡽࢀ࡚࠸ࡿࠋࡑࡢࡓࡵࠊࡇࢀࡲ࡛ホ౯ࡀẚ㍑≧ែࡢゎ᫂࡟㈉⊩࡛ࡁࡿࡇ࡜ࡀᮇᚅ࡛ࡁࡿࠋࡲࡓࠊ

ⓗᅔ㞴࡜ࡉࢀ࡚࠸ࡓṧ␃ᛂຊࡢᙳ㡪࡟ࡘ࠸࡚ࡢ

୰ᛶᏊࣃࢫࡢ㝈⏺࡛࠶ࡿ 40mm ࢆ㉸࠼ࡿࡼ࠺࡞

ᐇែゎ᫂ࡀᮃࡲࢀ࡚࠸ࡿࠋࡇࢀ࡟ᑐࡋ࡚ࠊᚑ᮶࠿

୍⯡ࡢ኱ᆺヨᩱ࡬ࡢ୰ᛶᏊἲࡢ฼⏝ᣑ኱࡟ࡘ࡞

ࡽࡢṧ␃ᛂຊホ౯ᡭἲ࡛࠶ࡿ X ⥺ࠊ㉸㡢Ἴࠊ☢Ẽࡀࡿࡇ࡜ࡀᮇᚅ࡛ࡁࡿࠋ

࡞࡝ࢆ฼⏝ࡋࡓ᪉ἲ࡛ࡣᐃ῝ࡉ⠊ᅖࡸ఩⨨ศゎ⬟ࠊ⢭ᐦࡉ࡞࡝ࡢⅬ࡛୙༑ศ࡞㠃ࡀ࠶ࡾࠊ᪂ࡋ

㸰㸬ᐇ㦂᪉ἲ

࠸ᡭἲ࡛࠶ࡿ୰ᛶᏊᅇᢡᢏ⾡࡬ࡢᮇᚅࡀ㧗ࡲࡗ୰ᛶᏊ ᐃ࡟ࡣ㸪᪥ᮏཎᏊຊ◊✲ᶵᵓ㸦-$($㸧ࡢ࡚࠸ࡿࠋṧ␃ᛂຊ ᐃ⿦⨨㸦5(6$㸧ࢆ౑⏝ࡋࡓ㸬ᅗ  ࡟ ୍᪉ࠊ୰ᛶᏊἲ࡟࠾ࡅࡿ୍ࡘࡢㄢ㢟࡜ࡋ࡚ࠊ୰

୰ᛶᏊ ,3 ࢆ⏝࠸ࡓ ᐃ⿦⨨ࢆ♧ࡍ㸬ᮏ⿦⨨ࡢᵓᛶᏊࣃࢫࡀ⣙ 40mm ࢆ㉸࠼ࡿᮦᩱෆ㒊ࡢホ౯ࡀᡂࡣ㸪ヨ㦂∦ಖᣢ㒊࡜ 1,3 ࢆಖᣢࡍࡿ 1,3 ࣓࢝ࣛ㞴ࡋࡃ࡞ࡿၥ㢟ࡀ࠶ࡿࠋࡇࡢࡓࡵࠊᮏ◊✲࡛ࡣ࠿ࡽ࡞ࡿ㸬1,3 ࣓࢝ࣛࡣ㸪1,3 ࢆᖹ㠃≧࡟ᅛᐃࡍ

Webster ࡽࡀᥦၐࡋࡓᡭἲ࡛࠶ࡿヨᩱࢆ┤஺ 2 ᪉ྥ࡟ࢫࣛ࢖ࢫࡋ࡚ゎᯒࡍࡿ᪉ἲ࡟ຍ࠼࡚ࠊࢫࣛ࢖
ࢫᚋࡢᛂຊ≧ែ࡟㛵ࡍࡿ≉ᛶࢆ฼⏝ࡋ࡚ᖹ㠃ᛂຊゎᯒἲ࡛࠶ࡿ୰ᛶᏊ sin2ȯἲ࠾ࡼࡧ୰ᛶᏊ cosȘἲࢆ⤌ࡳྜࢃࡏࡓࣁ࢖ࣈࣜࢵࢻゎᯒἲ࡟ࡘ࠸᳨࡚ウࡋࡓ㸬 ୰ᛶᏊ cosȘࡣ㸪୰ᛶᏊ࢖࣓࣮ࢪࣥࢢࣉ࣮ࣞࢺ
(NIP)ࢆ฼⏝ࡋ࡚ᅇᢡ⎔඲యࢆ฼⏝ࡋ࡚ᛂຊᐃࡍࡿ᪂ࡋ࠸᪉ἲ࡛࠶ࡿࠋࡇࢀࡲ࡛ࡢ᳨ウࡢ⤖ᯝࠊձᇶ‽࡜࡞ࡿ d0 ್࡟㛵ࡍࡿ⢭ᗘࡀ୙せ࡛࠶ࡿࠊղ
༢୍ධᑕἲࡢࡓࡵヨᩱࢧ࢖ࢬࡢไ⣙ࡀᑡ࡞࠸ࠊճ
㌿ືၥ㢟࡛㔜せ࡞⾲ᒙᇦࡸࡏࢇ᩿ᛂຊࡢ
㐺ࡋ࡚࠸ࡿࠊմᖹ㠃ᛂຊ࠾ࡼࡧ୕㍈ᛂຊࡢ

Fig.1.

ᐃ࡟ᐃࡀྍ⬟࡛࠶ࡿࡇ࡜ࠊ࡞࡝ࡀุ᫂ࡋ࡚࠸ࡿࠋࡇࢀࡽࡢ

Photograph of experimental set-up

for neutron stress analysis using neutron
image plate.

ཎᏊຊ⛉Ꮫ◊✲ᡤ 3 ྕ⅔ࠊRESA2ࠊṧ␃ᛂຊ㻝㻢㻞

- 160 -

JAEA-Review 2013-040ࡿࡓࡵ㸪ྲྀࡾ௜ࡅ㠃࡟┤ᚄ PP ࡢ✰ࢆ PP 㛫

NIP reader

Fuji Film, BAS-1800

㝸࡟᱁Ꮚ≧࡟✵ࡅ㸪⿬ഃ࠿ࡽ┿✵྾ᘬ࡛ࡁࡿᵓ㐀(note: figures in parenthesis indicate for࡜ࡋࡓ㸬1,3 ࡢ᳨ฟ㠃ഃ࡟ࡣ㸪ཌࡉ PP ࡢ࢔࣑ࣝstandard material (s.m.))ࢽ࣒࢘ᯈࢆ඲㠃࡟⿕ࡏࡓ㸬ࡇࡢ࢔࣑ࣝࢽ࣒࢘ᯈࡢ

ᐃἲ࡛ࡣ ᐃ౛ࡀᑡ࡞ࡃ୙᫂࡞Ⅼࡀᑡ࡞ࡃ࡞࠸ࡀࠊ

୰ኸ㒊࡟ࡣ෇㗹≧ࡢᇶ‽ᮦ࣍ࣝࢲࢆྲྀࡾ௜ࡅ㸪ヨ

୕㍈ cosȘἲࡣࡇࡢࡼ࠺࡞ȫ13 ࡢࡢ㦂∦࠾ࡼࡧᇶ‽ᮦ㸦ཌࡉ PP㸪┤ᚄ PP ࡢ෇ᙧ㌾㛗ࢆ᭷ࡋ࡚࠾ࡾࠊ࣮ࣞࣝࡢၥ㢟࡟᭷ຠ࡞ᡭἲ࡛࠶

㗰ᯈ㸧ࡢᅇᢡ⎔ࢆྠ᫬᧜ᙳࡋࡓ㸬ᇶ‽ᮦࡣ୰ᛶᏊ

ࡿࠋᐃ࡟᭷ຠ࡞≉

ᅇᢡ⏬ീ࡟࠾ࡅࡿධᑕࣅ࣮࣒఩⨨㸦ᅇᢡ⎔୰ᚰ㸧
࠾ࡼࡧ 1,3 ࡜ヨ㦂∦࡜ࡢ㊥㞳ࢆỴᐃࡍࡿ┠ⓗ࡛౑㸱㸬ᐇ㦂⤖ᯝ

⏝ࡋࡓ㸬ධᑕࣅ࣮࣒ࡣヨ㦂∦࡟ᑐࡋ࡚ r㸦ࡲࡓࡣ r㸧ഴᩳࡉࡏ࡚
୺࡞ᐃࡋࡓ㸦ᇶ‽ᮦࡣᆶ┤ධᑕ㸧㸬ᐃ᮲௳ࢆ⾲  ࡟♧ࡍ㸦ᣓᘼෆࡣᇶ‽ᮦࡢ᮲௳㸧㸬౑⏝ࡋࡓ୰ᛶᏊࣅ࣮࣒ࡢἼ㛗ࡣ⣙ QP ࡛࠶ࡾ㸪ࣅ࣮࣒ࡢᚄࡣ PP ࡢ෇ᙧ࡜ࡋࡓ㸦ᚄ PP
ࡢ %& 〇ࢫࣜࢵࢺ㸪࠾ࡼࡧ㸪ᚄ PP ࡢ &G 〇ࢫࣜࢵࢺ౑⏝㸧㸬᧜ᙳࡉࢀࡓᅇᢡ⎔⏬ീࡣ㸪,3 ㄞྲྀ⿦⨨)XML)LOP%$6 ࡟࡚఩⨨ศゎ⬟ ȣP㸪
㍤ᗘศゎ⬟ ELW ࡛ಖᏑࡋࡓ㸬ḟ࡟㸪⏬ീࢹ࣮ࢱ࠿ࡽᅇᢡ⎔༙ᚄ᪉ྥࡢᅇᢡࣉࣟࣇ࢕ࣝࢆồࡵ㸪ᇶ‽ᮦࡢᅇᢡ⎔࡟ᑐࡍࡿධᑕࣅ࣮࣒ࡢ୰ᚰ఩⨨㸪ヨ㦂∦ࡢᅇᢡ⎔༙ᚄࢆࡑࢀࡒࢀồࡵ㸪FRVǂ ἲࢆ୕㍈ゎᯒ⏝࡟ᨵⰋࡋࡓ᪉ἲ㸦௨ୗࠊ୕㍈ cosȘἲ㸧࡟ࡼࡾᛂຊࢆỴᐃࡋࡓ㸬㌿ື⑂ປ࡛ࡣࡏࢇ᩿ᛂຊȫ(a) measured with slit

13 ࡢᙳ㡪ࡀ㔜せ࡛࠶ࡿࡀࠊᶆ‽ⓗ࡞ⓗ࡞୰ᛶᏊᛂຊ

Table 1. Experimental conditions.

Diffraction
WaveĮFe211, 2ș=126Û

length of neutron 0.20888 nm

beam
Distance

from

NIP

to 56 mm (20 mm)

specimen
Insident angle of neutron 27Û (0Û)
beam
Irradiated time

4.5 hrIrradiated area

ȭ3mm

Thickness of specimen

15 mmThickness of s.m.

1.0 mmNIP used

Fuji

Film,

(b) measured without slit

BAS-ND2025

Fig.2

Debye rings obtained from the used rail.

1-10-2㻝㻢㻟- 161 -

JAEA-Review 2013-040

Fig.3

Im
mage processing of neuttron Debye rings for reesidual stresss analysis..
100
S
ea st
esses, MPaa
Shearstresses,࣮ࣞࣝࡢ㢌㢌㡬㠃ࡢ୰ᚰ㒊࡟ᑐࡋ㸪ࢫࢫࣜࢵࢺࢆ⏝⏝࠸࡚ gauge voolume ࡢ῝ࡉࢆኚ໬ࡉࡏ
ࡏࡓሙྜࠊ࠾ࡼ
ࡧࠊࢫࣜࢵࢵࢺࢆ⏝࠸࡞
࡞࠸ሙྜ࡟ࡘ
ࡘ࠸᳨࡚ウࡋࡋࡓ㸬ᆶ┤ධᑕ࡟࡟ᑐࡍࡿ୰ᛶ
ᛶᏊᅇᢡ⎔ࢆᐃࡋ㸪୕㍈㍈

cosȘἲࢆ㐺㐺⏝ࡋ࡚ࡏࢇ
ࢇ᩿ᛂຊȫ13 ࠾ࡼࡧȫ23 ࢆゎ
ࢆ
ᯒࡋࡓ㸬

50
0
-12

-8

-4

0

4

8

12

-50
-100

ࡲࡎ㸪࣮ࣞࣝヨᩱ࠿ࡽᐃࡉࢀࡓࡓȘFe-211 ᅇᢡᅇᅗ 2 ࡟♧ࡍ㸬እഃࡢᅇᢡ⎔⎔ࡀ࣮ࣞࣝヨヨᩱ⎔⏬ീࢆᅗࡢ 211 ᅇᢡᢡ࡟ࡼࡿࡶࡢ࡛࠶ࡾࠊෆഃ
ഃࡣ⏬ീゎᯒ
ᯒ⏝࡜ࡋ࡚᧜ᙳᙳࡋࡓᇶ‽ᮦ
ᮦ㸦t=1mm ࡢ㗰㗰ᮦ㸧࠿ࡽࡢ
ࡢȘ

Distance frrom center of raill to gauge corner,, mm

Fig.4 Result off shearing sttresses as a function off
disttance from ceenter of rail inn width directtion obtainedd
by meansmof neuutron image pplate. (‫ۑ‬: Ĳ13,‫ڧ‬: Ĳ23)

Fe-211 ᅇᢡᢡ⎔࡛࠶ࡿࠋᚋ⪅ࡢᅇᢡ༙༙ᚄࡀᑠࡉ࠸
࠸⌮⏤ࡣࠊIP ࡜ࡢ㊥㞳ࡀ࣮ࣞࣝヨᩱࡼࡾ▷࠸ࡓࡵ࡛࡛࠶ࡿࠋᯒࢆ⤒࡚ࠊྛᅇᢡ⎔ࡢȘF
Fe-211 ࣆ࣮ࢡࢡ఩⏬ീゎᯒ⨨ࢆồࡵࠊࡑࢀ࡜ᅇᢡ⎔୰ᚰ࡜ࡢ㊥㊥㞳ࢆᅇᢡ⎔⎔༙ồࡵࠊࡑࡢ୰ᚰゅ࡟ᑐࡍࡿኚ໬ࢆồࡵ
ࡵࡓࠋ
ᚄ࡜ࡋ࡚ồ


ᅇᢡ⎔࠿ࡽ
ࡽ᱁Ꮚࡦࡎࡳ İĮ ࢆᅇᢡ⎔⎔඲࿘࡟ᑐࡋ࡚
୰ᚰゅ Į ࡀ 1r㛫㝸࡛ồồࡵ㸪ḟ࠸࡛
࡛୕㍈ cosȘἲἲ࡟(a) neutrondiffraaction profilee.

ᚲせ࡞ a1 ⥺ᅗ࠾ࡼࡧ⥺a2 ⥺ᅗࢆồࡵࡵࡓ㸬a1 ⥺ᅗ࠾࠾ࡼ
ࡧ a2 ⥺ᅗࡢࡢࢢࣛࣇࡢഴ
ഴࡁ࠿ࡽࡏࢇ
ࢇ᩿ᛂຊ Ĳ13㸪Ĳ23
ࡀࡑࢀࡒࢀࢀỴᐃ࡛ࡁࡿ㸬ྠᵝ࡞ࢹ࣮࣮ࢱゎᯒࢆ඲
඲࡚ࡢᅇᢡ⎔⏬
⏬ീ࡟ᑐࡋ࡚⾜ࡗࡓࠋᅗ 3 ࡟୰ᛶᏊᅇ
ᅇᢡ⎔⏬ീࡢฎฎ⌮᪉ἲࡢᴫ
ᴫせࢆ♧ࡍࠋ
ࢫࣜࢵࢺࢆ౑⏝ࡋ࡞࠸ሙྜࡢᛂຊ
ຊゎᯒ⤖ᯝࢆ
ࢆࡍࠋࡑࡢ⤖ᯝ
ᯝࠊĲ13 ࡣ࣮࣮ࣞࣝ㋃㠃୰ኸ
ኸ࠿
Fig.4 ࡟♧ࡍࡽࣇ࢕࣮ࣝࣝࢻࢥ࣮ࢼ࣮ࡲ࡛ࡢ⠊ᅖ࡟࠾࠸࡚⣙dius of neutrron Debye ring.
r(b) rad50MPa ࢆ♧♧ࡋࠊࢤ࣮ࢪ
ࢪࢥ࣮ࢼ࣮࡛
࡛ࡣ-90MPa ࡟➢࡟ྕࡀ㏫㌿ࡋࡋࠊᛂຊ್ࡶ࡯ࡰಸቑࡍࡿഴྥࡀศ࠿
࠿ࡿࠋ
ࡇࡢഴྥࡣ
ࡣ㹖⥺ᛂຊ

⾲
ᐃἲ࡟ࡼࡿ࣮ࣞࣝ㋃㠃⾲

Fig.5 Commparison b
between ex
xperimentall
data and numericalnsiimulation results.

1-10-2㻝㻢㻠- 162 -

JAEA-Review 2013-040㠃ᇦ࡟ᑐࡍࡿ

ᐃ⤖ᯝ࡜㢮ఝࡋ࡚࠸ࡿࠋࡍ࡞ࢃࡕࠊ

ᅇᢡ⎔༙ᚄ࡟ࡘ࠸࡚ᅇᢡࣉࣟࣇ࢕ࣝ࡜ྠᵝ࡞ẚ⾲㠃࡜ྠᵝ࡞ࡏࢇ᩿ᛂຊ≧ែࡀ୰ᛶᏊ౵ධ῝ࡉ

㍑ࢆ⾜ࡗࡓ⤖ᯝࢆ⾲ࡋ࡚࠸ࡿࠋࡑࡢ⤖ᯝࠊ኱ࡲ࠿

࡛࠶ࡿᩘ mm ࡲ࡛ཬࢇ࡛࠸ࡿྍ⬟ᛶࡀุ᫂ࡍࡿࠋ

࡟࡞ഴྥ࡟ࡘ࠸࡚ࡢ୍⮴ࡀぢࡽࢀࡿ୍᪉࡛㸪⣽㒊

୍᪉ࠊĲ23 ࡣ-36MPa ࠿ࡽ 22MPa ࡢ⠊ᅖ࡟࠶ࡾࠊ

࡟࠾࠸࡚ࡣ┦㐪ࡀ⏕ࡌ࡚࠸ࡿࡇ࡜ࡀศ࠿ࡿ㸬ࡑࡇᐃㄗᕪ⠊ᅖෆࡢᛂຊ್ࡀᚓࡽࢀ࡚࠸ࡿࡀࠊ࣮ࣞࣝ

࡛ࠊᛂຊゎᯒ⤖ᯝࡢ᭷ຠᛶࡸㄗᕪࡢཎᅉ࡞࡝࡟ࡘ

㋃㠃୰ኸ㒊ࢆቃ࡟࡯ࡰᑐ⛠ⓗ࡞ศᕸࢆ♧ࡋ࡚࠸࠸᳨࡚ドࡋࡓ㸬ࡿࠋ୰ᛶᏊ࢖࣓࣮ࢪࣥࢢࣉ࣮ࣞࢺ࡛ࡣ㸪㹖⥺࡜ྠ ࡑࡇ࡛ࠊࢫࣜࢵࢺࢆ౑⏝ࡋࡓᐃࢹ࣮ࢱ࡟ᑐࡋ

ᵝ࡞ࠕࡦࡎࡳຠᯝࠖ௨እ࡟ࠊࠕ୰ᛶᏊຠᯝࠖ㸪ࠕࢫ

࡚ࡶྠᵝ࡞᳨ウࢆ⾜ࡗࡓࠋࢤ࣮ࢪ࣮࣒࣎ࣜࣗࡢ୰

ࣜࢵࢺຠᯝࠖࡢཎᅉ࡟ࡼࡾ୰ᛶᏊᅇᢡ⎔ࡀኚᙧࡍᚰ఩⨨ࡀ⾲㠃࠿ࡽࡢ῝ࡉ6.8mm࡟࠾ࡅࡿĲ13࡟ᑐࡋࡿ㸬᳨ドࡢࡓࡵࠊ
ࠕ୰ᛶᏊຠᯝࠖ㸪ࠕࢫࣜࢵࢺຠᯝ᳨࡚ࠖウࡋࡓࠋᚓࡽࢀࡓࡏࢇ᩿ᛂຊĲ13ࢆ࣮ࣞࣝࡢᖜ

ࢆ⪃៖ࡋࠊᛂຊᡂศࡢึᮇ್ࢆタᐃࡋࡓ≧ែ࡟ࡘ᪉ྥࡢ఩⨨㸦୰ᚰ㒊࠿ࡽGC࡬ࡢ㊥㞳㹷㸧࡟ᑐࡋ࡚࠸࡚ࠊ୰ᛶᏊᅇᢡ⎔࠾ࡼࡧ୕㍈ cosȘἲ࡟㛵ࡍࡿ⾲ࡋࡓ⤖ᯝࠊ ᐃయ✚ࡢ୰ᚰࡀෆ㒊ࡢሙྜ࡛ࡶGC

ᩘ್ⓗ࡞ࢩ࣑࣮ࣗࣞࢩࣙࣥࢆ⾜ࡗࡓࠋࡇ࠺ࡋ࡚ᚓ

ഃ࡟ྥ࠿ࡗ࡚㈇ࡢࡏࢇ᩿ᛂຊ᪉ྥ࡟ኚ໬ࡍࡿࡇ

ࡽࢀࡓᛂຊࡣ㸪࡜ࡀศ࠿ࡗࡓࠋḟ࠸࡛ࠊࢫࣜࢵࢺࡢ౑⏝ࡢ᭷↓ࢆᯝ࡜ࡢẚ㍑ࢆ⾜ࡗࡓࠋ஧ࡘࡢ⤖ᯝࡣࠊ࣮ࣞࣝࡢᖜ

60.1 ·§ 85.2  7.0¨¸    (2)
341
.
6
214
.2 ¸

¨
¨
 56.0 ¸¹©

᪉ྥ࡟ᑐࡋ࡚࡯ࡰᖹ⾜࡟ศᕸࡋࠊࡲࡓࠊࢤ࣮ࢪ࣎

࡜࡞ࡗࡓࠋࡇࡢ࡜ࡁࡢึᮇ್࡟ᑐࡍࡿᛂຊィ⟬⤖࣮࣒ࣜࣗࢆ౑⏝ࡋࡓሙྜࡢ᪉ࡀ⣙40MPa⛬ᗘ㈇್

ᯝࡢㄗᕪࡣᖹᆒ࡛ 1.4%࡛࠶ࡗࡓࠋࡇࡢࡇ࡜࠿ࡽࠊ

ഃ࡟ࢩࣇࢺࡋ࡚࠸ࡿࡇ࡜ࡀศ࠿ࡗࡓࠋࡇࡢࡇ࡜࠿

୕㍈ cosȘἲ࡟ࡼࡿᛂຊゎᯒἲࡀᐇ⏝⠊ᅖෆ࡛᭷ࡽࠊ⾲㠃࠿ࡽ6.8mm⛬ᗘෆ㒊ࡢ᪉ࡀࡸࡸࡏࢇ᩿ᛂ

ຠ࡞⤖ᯝࢆ୚࠼ࡿ࡜ุ᩿࡛ࡁࡿࠋ୍᪉ࠊFig.5 ࡟࠾ຊࡀቑ኱ࡋ࡚࠸ࡿ࡜᥎ᐃ࡛ࡁࡿࠋࡇࢀࡣࠊࡏࢇ᩿

ࡅࡿ

ᛂຊĲ13 ࡀ᥋ゐ㠃࠿ࡽ3mm㹼6mm⛬ᗘෆ㒊࡟Ⓨ⏕࣑࣮ࣗࣞࢩࣙࣥ⤖ᯝ௨ୖ࡟኱ࡁ࠸ࡇ࡜࠿ࡽ㸪ࡑࡢ

ࡍࡿ࡜ࡢHertzࡢ᥋ゐᛂຊ⌮ㄽ࠿ࡽࡢண

ཎᅉ࡜ࡋ࡚ࢩ࣑࣮ࣗࣞࢩ࡛ࣙࣥ๓ᥦ࡜ࡋ࡚࠸ࡿ

ẚ㍑ࡍࡿࡓࡵࠊࢫࣜࢵࢺࢆᮍ౑⏝ࡢሙྜࡢ

ᐃ⤖

࡜ᑐᛂ

ᐃࢹ࣮ࢱ࡜ゎᯒ⤖ᯝ࡟ぢࡽࢀࡿㄗᕪࡣࢩ

ࡋ࡚࠸ࡿࠋᇶᮏⓗ௬ᐃ࠿ࡽࡢ㐓⬺ࡀཎᅉ࡛࠶ࡿྍ⬟ᛶࡀ⪃ ḟ࡟ࠊᆶ┤ᛂຊᡂศ࡟㛵ࡋ࡚୕㍈ cosȘἲࢆ㐺࠼ࡽࢀࡿ㸬ࡍ࡞ࢃࡕ㸪1.ᛂຊ໙㓄ࠊ2.ᚤどⓗ㔠ᒓ⏝ࡋ࡚ᛂຊィ⟬ࢆ⾜ࡗࡓࠋࡇࡢሙྜ࡟ࡣ 3 ᪉ྥ࠿⤌⧊ࠊ3.ᙎᛶⓗ␗᪉ᛶ➼ࡢస⏝ࡀാ࠸࡚࠸ࡓྍ⬟ࡽᛶࡀ⪃࠼ࡽࢀࡿࠋᐇ㦂ࢹ࣮ࢱ࡜ࡢ୍⮴࡟ࡣࠊࡇࢀ

ᐃࡋࡓ୰ᛶᏊᅇᢡ⎔ࢆ⏝࠸ࡓࠋ࣮ࣞࣝ㋃㠃ࡢ୰ᚰ఩⨨࠿ࡽᚓࡽࢀࡓᛂຊᡂศࡣ௨ୗࡢ㏻ࡾ࡛ࡽࡢ⪃៖ࡀᚲせ࡜ᛮࢃࢀ௒ᚋࡢㄢ㢟࡛࠶ࡿ㸬࠶ࡗࡓࠋ㸲㸬ᡂᯝࡢබ⾲59.7 ·§ 85.0  6.7¨¸
 377.1 212.6 ¸    (1)¨¨ 55.5 ¸¹©

(1) X ⥺࡜୰ᛶᏊ࡟ࡼࡿ㕲㐨࣮ࣞࣝࡢṧ␃ᛂຊࠊబࠎᮌᩄᙪࠊ⯓ ᏹ୍㸪Ỉୖᑑኵ㸪ᮾ ᐶኈࠊ㸦༢఩㸸MPaࠊ௨ୗྠᵝ㸧㕥ᮌ⿱ኈ㸪┒ྜ ᩔ㸪ᘅ℩ᖾ㞝ࠊ᪥ᮏᮦᩱᏛ

Fig.5(a)ࡣ㸪ᅇᢡࣉࣟࣇ࢕ࣝࡢࣆ࣮ࢡ㒊࡟ࡘ࠸࡚ࠊ

఍ X ⥺ᮦᩱᙉᗘ࡟㛵ࡍࡿࢩ࣏ࣥࢪ࣒࢘ㅮ₇ㄽᐇᩥ㞟ࠊpp.70-75ࠊ2010 ᖺࠊ7 ᭶⤖ᯝ࡜ࢩ࣑࣮ࣗࣞࢩࣙࣥࡢ⤖ᯝࢆࡋࡵࡋ࡚

࠸ࡿࡀࠊ୧⪅ࡢഴྥࡣ࡯ࡰ୍⮴ࡋࡓ㸬Fig.5(b)ࡣ㸪

1-10-2㻝㻢㻡- 163 -

JAEA-Review 2013-040

1-10-3⢒኱⤖ᬗ⢏ᐃᡭἲࢆ⏝࠸ࡓ୰ᛶᏊ࡟ࡼࡿ࢔࣑ࣝࢽ࣒࢘㗪㐀ྜ㔠ࡢᴟప ෆ㒊ᛂຊ ᐃ,QWHUQDO6WUHVV0HDVXUHPHQWRI&RDUVH*UDLQLQ$OXPLQXP&DVWLQJ$OOR\E\1HXWURQGLIIUDFWLRQ⚄ᡞᕷ❧ᕤᴗ㧗➼ᑓ㛛ᏛᰯᶵᲔᕤᏛ⛉ す⏣┿அ1◊✲┠ⓗ࡜ព⩏㏆ᖺ㸪୰ᛶᏊ࡟ࡼࡿෆ㒊ᛂຊᵝࠎ࡞⏘ᴗศ㔝࡛ṧ␃ᛂຊࡢx3

ᐃἲࡀ☜❧ࡉࢀ㸪ᐃࡀ⾜ࢃࢀ࡚࠸ࡿ㸬⏦ㄳ⪅ࡽࡣ࠿ࡡ࡚ࡼࡾ㗪㐀ᮦᩱࡢෆ㒊ṧ␃ᛂຊ\ᐃࢆ㐍ࡵ࡚࠸ࡿࡀ㸪㗪㐀ᮦᩱࡢෆ㒊࡟ࡣࡁࢃࡵ࡚⢒኱࡞⤖ᬗ⢏ࡀᏑᅾࡍࡿࡓࡵࡑࡢ

࡚࠸ࡿ㸬ᚑ᮶ࡣ୰ᛶᏊᛂຊ ᐃ࡟࠾࠸࡚ 1 Ⅼࡢ࡟ᑐࡋ࡚༑ศ࡞

I

ᐃࢆᅔ㞴࡞ࡶࡢ࡟ࡋ
ᐃx2ᐃ᫬㛫ࢆ࡜ࡿࡇ࡜࡛⢭ᗘࡢྥୖࢆ

F

ヨࡳ࡚࠸ࡓࡀ㸪ࣅ࣮࣒ࢱ࢖࣒ࡢၥ㢟ࡀ⏕ࡌࡿ࡜ྠ᫬

x1

࡟㸪ồࡵࡿ᪉఩࡟඲ࡃᅇᢡ⥺ࣆ࣮ࢡࡢฟ⌧ࡋ࡞࠸ࢣ࣮ࢫࡶ࠶ࡿ࡞࡝ከࡃࡢၥ㢟ࡀṧࡉࢀ࡚࠸ࡿ㸬Fig.1 Cartesian coordinate system and angle definitions.

ᮏ◊✲࡛ࡣ⢒኱⤖ᬗ⢏ࢆྵࡴᮦᩱࡢ୰ᛶᏊᛂຊ
ᐃἲࡢࡦ࡜ࡘ࡜ࡋ࡚ࣟࢵ࢟ࣥࢢ࣮࢝ࣈࢆ฼⏝ࡋࡓᐃ᪉ἲࢆᥦ᱌ࡍࡿࡶࡢ࡛࠶ࡿ㸬ࡇࡢ᪉ἲ࡟࠾࠸࡚㸪

ྕࢆ♧ࡍ㸬

ᐃࡋ

ࡇࡇ࡛㸪x1, x2, x3 ㍈᪉ྥࡢ୺ࡦࡎࡳࢆH, H2,H 3㸪୺

Hooke ࡢἲ๎ࢆ⏝࠸࡚ᛂຊࢆ⟬ฟࡍࡿᡭ㡰ࡣྠࡌ࡛ᛂຊࢆV1, V2, V3 ࡜ࡍࡿ࡜ Hooke ࡢἲ๎ࡼࡾᛂຊ࡜ࡦ

࠶ࡿࡀ㸪ồࡵࡿ᪉ྥࡢᅇᢡ⥺ࣆ࣮ࢡࡀᚓࡽࢀ࡞࠸ሙ

ࡎࡳࡢ㛵ಀࡣḟᘧ࡜࡞ࡿ㸬ྜ࡛࠶ࡗ࡚ࡶ㸪௚ࡢ᪉ྥࡢᅇᢡ⥺ࣆ࣮ࢡ࠿ࡽ┠ⓗ࡜1­°H 1 E ^V 1  Q V 2  V 3 `°1°  ®H2   ^V 2  Q V1  V 3`      (1)
E
°

1
°
^V 3  Q V 1  V 2 `°H 3
  ¯   E           .

ィ⟬࡛ࡣᚑ᮶ࡢ┤஺ࡍࡿ 3 ㍈᪉ྥࡢࡦࡎࡳࢆ

ࡍࡿ᪉ྥࡢࡦࡎࡳࢆィ⟬ࡍࡿࡇ࡜࡛ᛂຊࡢィ⟬ࡀྍ⬟࡜࡞ࡿ㸬X ⥺ᛂຊ ᐃ࡟࠾ࡅࡿ sin2ȯἲࢆࣟࢵ࢟
ࣥࢢ࣮࢝ࣈ࡛ᚓࡽࢀࡿᅇᢡ⥺ࣆ࣮ࢡ࡟⤌ࡳྜࢃࡏࡓ
ᡭἲ࡜ࡶ࠸࠼ࡿ㸬ࡉࡽ࡟㸪ᐇ㝿ࡢᐃ࡟࠾࠸࡚ࡣ୰ᛶᏊ↷ᑕ㡿ᇦෆ ࣛࣥࢲ࣒࡞ᚤ⣽⤖ᬗ⢏࠿ࡽ࡞ࡿヨᩱ࡛ࡣ୰ᛶᏊࡢ

࡛ࡢ⢒኱⤖ᬗ࡟ᑐࡋ࡚࢚ࢵࢪຠᯝࡀᏑᅾࡋ㸪ᛂຊ↷ᑕయ✚ෆ࡟ᅇᢡ࡟ᐤ୚ࡍࡿ⤖ᬗ⢏ࡀᚲࡎᏑᅾࡋ x1,

ᐃࡢ⢭ᗘ࡟ᙳ㡪ࢆ୚࠼ࡿࡇ࡜ࡀ☜ㄆࡉࢀ࡚࠸ࡿ㸬ᮏx2, x3 ㍈᪉ྥࡢࡦࡎࡳ ᐃࡀྍ⬟࡛࠶ࡿ㸬ࡋ࠿ࡋ࡞ࡀ

◊✲࡛ࡣࡑࢀࡽࡢᙳ㡪ࢆ Cu ༢⤖ᬗࡢᑠヨ㦂∦ࢆ⏝ࡽ㸪⤖ᬗ⢏ࡀ⢒኱࡟࡞ࡿ࡜↷ᑕ㡿ᇦ୰࡟ᅇᢡ࡟ᐤ୚

࠸࡚⢒኱⤖ᬗࢆ

ᐃࡍࡿ㝿ࡢ࢚ࢵࢪຠᯝࢆᨃఝⓗ࡟ࡍࡿ⤖ᬗ⢏ࡣᚲࡎࡋࡶᏑᅾࡋ࡞࠸㸬ࡇࡢሙྜ x1, x2, x3

෌⌧ࡋᅇᢡ⥺࡟ཬࡰࡍᙳ㡪ࢆ☜ㄆࡍࡿ࡜ඹ࡟㸪ࡑࡢ㍈᪉ྥࡢ࠸ࡎࢀ࠿㸪࠶ࡿ࠸ࡣࡍ࡭࡚ࡢ᪉఩࡟࠾࠸࡚

⿵ṇ᪉ἲࢆ᳨ウࡋࡓ㸬ᅇᢡ⥺ࣆ࣮ࢡࡀฟ⌧ࡋ࡞࠸ሙྜࡀ࠶ࡾ㸪ᘧ(1)ࡢ

2

Hooke ࡢἲ๎ࢆ౑⏝࡛ࡁ࡞࠸ࡇ࡜࡟࡞ࡿ㸬ᐃ⌮ㄽ ヨᩱෆ㒊ࡢ୺㍈┤஺ᗙᶆ⣔ࢆ x1, x2, x3 ࡛ᐃ⩏ࡋ㸪 ࡇࡇ࡛㸪Fig.1 ࡟♧ࡍࡼ࠺࡞ F㸪I㸪\ ࡢゅᗘࢆ

x1- x2 ᖹ㠃ෆ࡛ x1 ࠿ࡽࡢゅᗘࢆF㸪x2- x3 ᖹ㠃ෆ࡛ x2

ᐃ⩏ࡋ㸪x1- x2 ᖹ㠃ෆࡢࡦࡎࡳࢆHF, x2- x3 ᖹ㠃ෆࡢࡦ㍈࠿ࡽࡢゅᗘࢆI㸪ྠᵝ࡟ x1- x3 ᖹ㠃ෆ࡛ x3 ㍈࠿ࡽࡢࡎࡳࢆHI, x1- x3 ᖹ㠃ෆࡢࡦࡎࡳࢆH \࡜ࡍࡿ࡜㸪ࡑ

ゅᗘࢆ\࡜ࡍࡿ㸬Fig.1 ࡟ᗙᶆ⣔࡜ྛ㍈࠿ࡽࡢゅᗘグࢀࡒࢀࡢᛂຊ࡜ࡦࡎࡳࡢ㛵ಀࡣḟᘧ࡜࡞ࡿ㸬

JRR3ࠊRESAࠊṧ␃ᛂຊホ౯㻝㻡㻡- 164 -

JAEA-Review 2013-040ࢆ␗࡞ࡿ෭༷㏿ᗘ࡛෭༷ࡋ㸪⤖ᬗ⢏ᚄࢆㄪᩚࡋࡓヨ
Q
1 Q
1
­
V 3  V 2 sin 2 I  V 1  V 3  V 2
°H I
E
E
E
ᩱࢆ⏝࠸ࡓ㸬୍⯡ⓗ࡟ࡣ㗪㐀⏝ࡢ࢔࣑ࣝࢽ࣒࢘ࡀ⏝
°
Q
1 Q
1
°
2
 1 V 3 sin \   V1  V 2   V3 (2)࠸ࡽࢀࡿࡀ㸪ᮏ◊✲࡟࠾࠸࡚ࡣ࠶࠼࡚⢒኱࡞⤖ᬗ⢏®H \    V
E
EE°
ࢆⓎ⏕ࡉࡏࡿࡓࡵ࡟⣧࢔࣑ࣝ⣔ࡢᮦᩱࢆ㑅ᢥࡋࡓ㸬
Q
1 Q
1
°
V 2  V 1 sin 2 F  V 2  V 3  V 1°H F¯   E          E      E .     ࢔࣑ࣝࢽ࣒࢘ࡣࢫࢸࣥࣞࢫ〇ࡢᐦ㛢㗪ᆺ࡟ධࢀ┿               ࡇࡢᘧࡼࡾ㸪HF, HM,H \ ࡣࡑࢀࡒࢀ sin2I㸪sin2\ 㸪2sin F࡟ᑐࡋ࡚⥺ᙧ㛵ಀ࡛⾲⌧ࡉࢀࡿࡇ࡜ࡀࢃ࠿ࡿ㸬✵⅔୰࡛ 700Υ࡟ຍ⇕ࡋ࡚⁐⼥ࡉࡏࡓ㸬ࡑࡢᚋ㸪㗪ᆺࢆỈ୰࡛ᛴ෭ࡋࡓᮦᩱࢆᚤ⣽⤖ᬗ⢏ヨᩱ࡜ࡋࡲࡓ㸪ࡇࡢᘧ࠿ࡽ᫂ࡽ࠿࡞ࡼ࠺࡟㸪I= 0q ᪉ྥࡢࡦࡎࡳࡣ H2㸪I= 90q ᪉ྥࡢࡦࡎࡳࡣ H 3 ࡛࠶ࡾ㸪ྠᵝ࡟\ = 0q ᪉ྥࡦࡎࡳࡣ H 3㸪\ = 90q᪉ྥࡦࡎࡳ
ࡣ H 1㸪ࡉࡽ࡟㸪F 0q ᪉ྥࡢࡦࡎࡳࡣ H㸪F= 90q ᪉ྥࡢࡦࡎࡳࡣH 2 ࡛࠶ࡿ㸬ࡇࢀࡣ Fig.1 ࠿ࡽࡶ᫂࠿ࡽ
࡛࠶ࡾ㸪ࡲࡓ㸪ᘧ(2)࠿ࡽࡶ☜ㄆ࡛ࡁࡿ㸬 HF, HI,H \ ࡀࡑࢀࡒࢀ sin2I㸪sin2\ 㸪sin2F࡟ᑐࡋ
࡚⥺ᙧ࡛࠶ࡿࡇ࡜࠿ࡽI㸪\㸪Fࢆኚ໬ࡉࡏࡿ㐣⛬࡛㸪ࡑࢀࡒࢀ࡟ࡘ࠸࡚㸰ࣨᡤ௨ୖࡢࡦࡎࡳࡢ್ࡀᏑᅾࡍ
ࢀࡤH, H2,H 3 ࢆࡑࢀࡒࢀ᥎ᐃࡍࡿࡇ࡜ࡀ࡛ࡁࡿ㸬 ࡉࡽ࡟㸪ࡇࡢH, H2,H 3 ࢆ⏝࠸࡚ᘧ  ࡟௦ධࡍࡿࡇ
࡜࡛୺ᛂຊV1, V2, V3 ࢆィ⟬ࡍࡿࡇ࡜ࡀྍ⬟࡜࡞ࡿ㸬 ౛࠼ࡤ㸪x2- x3 ᖹ㠃ෆ࡛Iᅇ㌿࡟క࠺ࣟࢵ࢟ࣥࢢ࢝
࣮ࣈࢆ

Fig.3 Microscopic photograph of coarse aluminum
sample.

ᐃࡋ㸪ᅇᢡࣆ࣮ࢡࡢᏑᅾ఩⨨ࢆ☜ㄆࡍࡿ㸬ḟ࡟㸪ᅇᢡ⥺ࡢᏑᅾࡍࡿ I ࡢゅᗘ࡛᱁Ꮚࡦࡎࡳ HIiࢆ࡚౑⏝ࡋࡓ㸬ࡲࡓ㸪ྠᵝ࡟⁐⼥ᚋ㸪✵Ẽ୰࡟ᨺ⨨ࡋᐃࡍࡿ㸬⮬↛✵෭≧ែ࡛෭༷ࡋࡓヨᩱࢆ⢒኱⤖ᬗ⢏ヨᩱ࡜ࡋ࡚౑⏝ࡋࡓ㸬⤖ᬗ⢏ᚄࡣ⢒኱⤖ᬗ⢏ヨᩱࡢሙྜࡣ⣙H2

200Pm㸪ᚤ⣽⤖ᬗᮦᩱ࡛⣙ 20Pm ࡛࠶ࡿ㸬Fig.3 ࡟⢒HI኱⤖ᬗ⢏ヨᩱࡢ⾲㠃ほᐹ෗┿ࢆ♧ࡍ㸬〇సࡋࡓ࢖ࣥࢦࢵࢺࡼࡾᘬᙇヨ㦂∦ࢆ๐ࡾฟࡋ୰

H3

ᛶᏊᛂຊ

ᐃ࡟⏝࠸ࡓ㸬ᑍἲࡣヨ㦂∦ࡢ୰ᛶᏊ↷ᑕ㒊ศࡣᖜ࠾ࡼࡧཌࡉ࡜ࡶ 10mm ࡢṇ᪉ᙧ᩿㠃࡜ࡋ㸪

0

sin2I
Fig.2 HIi sin2Idiagram.

1.0

ヨ㦂∦㛗ᡭ᪉ྥࡢᖹ⾜㒊ศࡣ 170mm ࡜ࡋࡓ㸬ヨᩱࡣᑠᆺࡢᘬᙇヨ㦂ᶵ࡟ྲྀࡾ௜ࡅ࡚ᘬᙇ㈇Ⲵ≧ែ࡛୰

 

ᛶᏊ

ᐃ⤖ᯝࡣ Fig.2 ࡟♧ࡍHIi sin I⥺ᅗࢆᥥࡁ㸪┤⥺2

ᐃࢆ⾜ࡗࡓ㸬
4 ୰ᛶᏊ

ᐃ࡟࠾ࡅࡿ࢚ࢵࢪຠᯝࡢㄪᰝ

㏆ఝࢆࡋ࡚I= 0q ࠾ࡼࡧI= 90q ᪉ྥࡢࡦࡎࡳ㸪ࡍᐃヨᩱ࡟ࡣ㸪⁐⼥ࡋࡓ Cu㸦99.9%㸧ࢆ୍᪉ྥจ

࡞ࢃࡕH2 ࡜ H 3 ࢆồࡵࡿࡇ࡜ࡀ࡛ࡁࡿ㸬ྠᵝ࡟ࡋ࡚ᅛࡉࡏࡁࢃࡵ࡚⢒኱࡞⤖ᬗ⢏ࢆసࡾ㸪㸯㎶ 2mm ࡢH\ i sin \⥺ᅗࡼࡾH 3 ࡜ H 1㸪HF i sin F⥺ᅗࡼࡾH 1❧᪉య࡟ษࡾฟࡋࡓᑠ༢⤖ᬗヨᩱࢆ〇సࡋࡓ㸬 X ⥺࡜ H 3 ࢆồࡵࡿࡇ࡜ࡀ࡛ࡁࡿ㸬࡟ࡼࡾ᪉఩ࢆ ᐃࡋࡓ⤖ᯝ㸪ヨᩱࡣ༢⤖ᬗࡢ≧ែ࡛22

࠶ࡾ 311 ࡢᴟࢆ୰ᛶᏊ ᐃ࡟౑⏝ࡍࡿࡇ࡜࡜ࡋࡓ㸬3 ヨᩱࡢ‽ഛᐃヨᩱ࡟ࡣ㸪⁐⼥ࡋࡓ࢔࣑ࣝࢽ࣒࢘㸦JIS A1050㸧

୰ᛶᏊᛂຊ

JRR3ࠊRESAࠊṧ␃ᛂຊホ౯ᐃ࡟ࡣ᪥ᮏཎᏊຊ◊✲㛤Ⓨᶵᵓࡢᨵ

1-10-3
㻝㻡㻢- 165 -

JAEA-Review 2013-040

Ⰻᆺ RESAϨࢆ⏝࠸࡚ ᐃࢆ⾜ࡗࡓ㸬Cu ヨᩱࡣゅᗘࢧࣥࣉࣝࢆ⛣ືࡋ㸪1 Ⅼ 20 ⛊ࡢィ ᫬㛫࡛ㄪᩚྎୖࡢᮌ∦࡟᥋╔ᮦ࡛ᅛᐃࡋ RESAϨࡢヨᩱྎࡗࡓ㸬ࡇࢀࡽࡢ

࡟ࢭࢵࢺࡋࡓ㸬௒ᅇ RESAϨ࡛౑⏝ࡋࡓࢫࣜࢵࢺ⣔ᗘࡀᚓࡽࢀ࡞ࡃ࡞ࡿⅬࢆ࠶ࡽ࠿ࡌࡵ☜ㄆࡋ࡚Ỵᐃࡋࡣධᑕࢫࣜࢵࢺࡣ 5mm × 5mm ࡢࢫࣜࢵࢺ࡛࠶ࡾ㸪࡚࠸ࡿ㸬ࡲࡓ㸪༢⤖ᬗ࠿ࡽࡢᅇᢡ⥺ࡣࡁࢃࡵ࡚ᙉࡃ㸪ཷගഃࡶ 5mm ࡢࣛࢪ࢔ࣝࢥ࣓࣮ࣜࢱࢆ౑⏝ࡋࡓ㸬

20 ⛊ࡢ▷᫬㛫ࡢᅇᢡゅࡀ⣙ 2ȟ=101r࡛࠶ࡿࡓࡵ㸪ࢤ࣮ࢪ࣮࣎ࣜࣗ

ࡢᙉᗘࡀᚓࡽࢀࡓ㸬ᐃ఩⨨ࡣ஦๓

ᐃࢆ⾜ᐃ࡟࠾࠸࡚ᅇᢡᙉ

ᐃ࡟࠾࠸࡚ࡶ 1000 ࢝࢘ࣥࢺ௨ୖ

࣒ࡣ࡯ࡰ 1 ㎶ 5mm ࡢ❧᪉య࡜࡞ࡗ࡚࠸ࡿ㸬ࡇࡢࢤ࣮ࢪ࣮࣒࣎ࣜࣗࡢ↷ᑕ୰ᚰ࡟ヨᩱࡢ୰ᚰࡀ୍⮴ࡍࡿ

Table 1 Conditions of neutron measurement.

ࡼ࠺࡟ྲྀࡾ௜ࡅࡓ㸬ヨᩱࡣ୰ᛶᏊࡢ↷ᑕ㡿ᇦෆ࡟࠾

Wave length࠸࡚᏶ᾎ≧ែ࡛ࢭࢵࢺࡉࢀ࡚࠸ࡿ㸬RESAϨヨᩱྎ
Reactor power
Measurement
material
Crystal systemhkl plane
Diffraction angle

ࡢ XYZ 㥑ື࡟ࡼࡗ࡚ 3 ḟඖⓗ࡟୰ᛶᏊ↷ᑕ㡿ᇦෆ࡛ࡢ఩⨨Ỵࡵࢆ⾜࠸ᅇᢡ⥺ࣉࣟࣇ࢓࢖ࣝࢆ
ࡇࡢᐃࡣ⢒኱⢏ࢆ

ᐃࡋࡓ㸬ᐃࡍࡿ≧ែࢆᨃఝⓗ࡟෌⌧ࡋ㸪࢚ࢵࢪຠᯝࡢᙳ㡪ࢆㄪ࡭ࡿࡇ࡜ࢆ┠ⓗ࡜ࡋ࡚࠸ࡿ㸬Fig.3 ࡟ヨᩱྎ࡟タ⨨ࡋࡓ༢⤖ᬗࢧࣥࣉࣝࡢ෗┿Slit systemࢆ㸬ࡲࡓ㸪Table 1 ࡟୰ᛶᏊ࡟ࡼࡿ ᐃ᮲௳ࢆ♧ࡍ㸬௒ᅇ⏝࠸ࡓ RESAϨ࡟࠾ࡅࡿἼ㛗ࡣ⣙ 1.6ύ࡛࠶ࡾ㸪

Detector

Ni powder Diffraction planes:
111, 200, 220, 311
Ȝ= 1.592930 Å
20MW
Cu single crystal
FCC
Cu 311
2ș= 101.1°
Incident slit : 5 × 5 mm
Receiving slit : 5 mmradial collimator
PSD, one dimensional detectorᅇᢡ㠃࡟ࡣ Cu 311 ࢆ⏝࠸ࡓ㸬
Gage volume
Scanning areazyx

Incident neutron beam

Copper single crystal
Fig. 4 Schematic diagram of the relation between thecopper scanning area and volume gage.
Table 2 Measurement positions of Cu single crystal.
X-direction -5, -3, -2, -1, 0, 1, 2, 3 mm, 8 points
Y-direction -3, -2, -1, 0, 1, 2, 3 mm, 7 points-7, - 5, -3, -2, -1, 0, 1, 2, 3, 5, 7mm,
Z-direction
11 points

Fig.3 Photograph of Cu single crystal sample andneutron measurement.
㉮ᰝ⠊ᅖࡣ Fig.4 ࡟♧ࡍ࡜࠾ࡾࢤ࣮ࢪ࣮࣒࣎ࣜࣗ

5ࢆྵࡴᙧ࡛ Cu ࡢ༢⤖ᬗࢆ㉮ᰝࡋࡓ㸬 ᐃ఩⨨ࡣࢤ࣮ࢪ࣮࣒࣎ࣜࣗ୰ᚰ఩⨨࠿ࡽ Table 2 ࡟♧ࡍ఩⨨࡟୰ᛶᏊ࡟ࡼࡿ⢒኱⢏ᛂຊᐃ࢔࣑ࣝࢽ࣒࢘㗪㐀ᮦᩱࡢ୰ᛶᏊᛂຊ ᐃ࡟ࡣྠࡌࡃ ᪥ ᮏཎ Ꮚຊ ◊ ✲㛤 Ⓨᶵ ᵓ ࡢṧ ␃ᛂ ຊ

JRR3ࠊRESAࠊṧ␃ᛂຊホ౯

- 166 -ᐃ ⿦⨨

1-10-3

㻝㻡㻣

JAEA-Review 2013-040

RESAϨࢆ⏝࠸ࡓ㸬࢔࣑ࣝࢽ࣒࢘ヨᩱࡣᘬᙇ἞ල࡟
⿦╔ࡋ࡚ RESAϨࡢヨᩱྎ࡟ࢭࢵࢺࡋ㸪ヨᩱୖࡢ࣐࣮࢟ࣥࢢࢆᡭࡀ࠿ࡾ࡟ࡋ࡚ẖᅇᐃ఩⨨ࢆ☜ㄆࡋ㸪ᘬᙇ࡟ࡼࡾ ᐃ఩⨨ࡀኚ໬ࡋ࡞࠸ࡼ࠺࡟⪃៖ࡋ࡚࠸ࡿ㸬ࡲࡓ㸪ヨᩱ࡟࠿࠿ࡿⲴ㔜ࡣᘬᙇ἞ල࡟⿦╔ࡋࡓࡦࡎࡳࢤ࣮ࢪ࠿ࡽࡦࡎࡳ㔞ࢆ

ᐃࡋ࡚㈇ⲴⲴ㔜࡟᥮⟬ࡋ࡚࠸ࡿ㸬Fig.5 ࡟ᘬᙇ἞ල࡟⿦╔ࡋࡓヨᩱ࡜ᐃࡢ≧ἣࢆ♧ࡍ㸬ࡲࡓ㸪Table 2 ࡟୰ᛶᏊ࡟ࡼࡿ ᐃ
Fig.6 Neutron profile from Cu single crystal.

᮲௳ࢆ♧ࡍ㸬
ᅇᢡ㠃࡟ࡣ Al 311 ࢆ⏝࠸ࡓ㸬ࡉࡽ࡟㸪ࡇࡢ ᐃ࡛ࡲࡓ㸪Fig.7(a), (b)ࡣ x=0, y=0, z=0 ࡢᗙᶆ఩⨨ࢆ୰

RESAϨ࡟౑⏝ࡋࡓࢫࣜࢵࢺ⣔ࡣධᑕࢫࣜࢵࢺࡣୖ
ୗⓎᩓࢆᢚ࠼ࡿࡓࡵࡢࢥ࣓࣮ࣜࢱࢆᤄධࡋ 3mm ×ᚰ࡜ࡋ࡚ྛ఩⨨࡟࠾ࡅࡿᅇᢡ⥺ࣆ࣮ࢡ࠿ࡽ

5mm ࡢ⦪㛗ࢫࣜࢵࢺࢆే⏝ࡋ࡚࠸ࡿ㸬ཷගഃࡣ 3mm

ࡓ 2ș ゅᗘ࡟࠾࠸࡚㸪ᅗ୰࡟♧ࡍ᩿㠃ୖࡢ್ࢆࣉࣟࢵ

ࡢࣛࢪ࢔ࣝࢥ࣓࣮ࣜࢱࢆ౑⏝ࡋࡓ㸬ࡑࡢࡓࡵ㸪୰ᛶࢺࡋࡓࡶࡢ࡛࠶ࡿ㸬ᐃࡉࢀᏊࡢ↷ᑕ㡿ᇦࡣ⦪㛗ࡢᙧ≧࡜࡞ࡿࡀ㸪ヨᩱ࠿ࡽࡣࡳ
ฟࡍࡇ࡜ࡣ࡞ࡃヨᩱෆ࡟ᇙࡲࡗࡓ≧ែ࡛࠶ࡿࡇ࡜ࢆ
☜ㄆࡋ࡚࠸ࡿ㸬

z
y
x
y
(a)

x

Fig.5 Photograph of neutron measurement.

zy6ᐃ⤖ᯝ࡜⪃ᐹ

x

6.1 ࢚ࢵࢪຠᯝࡢㄪᰝ⤖ᯝࡣࡌࡵ࡟ Cu ༢⤖ᬗࡢタ⨨ゅᗘࢆヲ⣽࡟ㄪᩚࡋ࡞
ࡀࡽ㸪ࣟࢵ࢟ࣥࢢ࣮࢝ࣈࢆ ᐃࡋ㸪Cu ༢⤖ᬗ࠿ࡽࡢzࣆ࣮ࢡࡢฟ⌧ࡍࡿ఩⨨ࢆㄪ࡭ࡓ㸬Fig.4 ࡟ Cu ༢⤖ᬗ(b)࠿ࡽࡢࣟࢵ࢟ࣥࢢ࣮࢝ࣈࢆ♧ࡍ㸬㠀ᖖ࡟኱ࡁ࡞ᙉᗘ
ࡢࣆ࣮ࢡࡢᚓࡽࢀ࡚࠸ࡿࡇ࡜ࡀ☜ㄆ࡛ࡁࡿ㸬ࣆ࣮ࢡxᙉᗘࡢࡶࡗ࡜ࡶ኱ࡁ࠸ ș ゅᗘ࡟ Cu ༢⤖ᬗࢆࢭࢵࢺ

Fig.7 Distribution of 2ș diffraction angle; (a) x-y plane,ࡋ(b) x-z plan.

ᐃࢆ⾜ࡗࡓ㸬

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1-10-3㻝㻡㻤- 167 -

JAEA-Review 2013-040

Fig.7(a)ࡢ⤖ᯝࡼࡾ㸪ᅗ୰࡟ᐃ⩏ࡉࢀࡿ X ᪉ྥ࡟࠾࠸࡚㸪୰ᛶᏊධᑕഃ࠿ࡽᅇᢡഃ࡟࠿ࡅ࡚ 2ȟゅᗘࡀFactor A: distribution of
wavelength㧗ゅ࠿ࡽపゅ࡟㐃⥆ⓗ࡟ኚ໬ࡋ࡚࠸ࡿࡇ࡜ࡀ☜ㄆ࡛

Gage volume
Reacting crystal grainࡁࡿ㸬ኚ໬㔞Ǽ2ȟࡣ 0.47º ࡜࡞ࡿ㸬ࡘࡲࡾ㸪ᐇ㝿ࡢ⢒኱⤖ᬗࡢ ᐃ࡟࠾࠸࡚ࡣ㸪⢒኱⤖ᬗࡢᏑᅾࡍࡿ఩

⨨ࡀ Fig.7(a)࡟࠾ࡅࡿྑ➃࡜ᕥ➃࡛ࡣ 2ș ᅇᢡゅᗘ࡟

0.47º ࡢᐃㄗᕪࡀ⏕ࡌࡿࡇ࡜࡟࡞ࡿ㸬ࡇࡢ⤖ᯝࡣCu ᑠ༢⤖ᬗࢆᨃఝⓗ࡞⢒኱⤖ᬗ⢏࡜⪃࠼ࡓሙྜ㸪ࡇࢀࡽࡢኚ໬ࡣ࢚ࢵࢪຠᯝ࡜ࡋ࡚ᐇ㝿ࡢ ᐃ࡟ࡣⓎ⌧ࡍࡿ࡜⪃࠼ࡽࢀࡿ㸬⪃៖ࡍࢀࡤࡼ࠸ࡇ࡜ࡀ☜ㄆ࡛ࡁࡓ㸬
Incident neutron beamDiffraction profile from thewhole gage volume
Factor B: diffraction profile
from the partial area in thegage volume

6.2 ᅇᢡ⥺ࣆ࣮ࢡ఩⨨ࡀศᕸࡍࡿཎᅉ

୍᪉㸪ᅇᢡ⥺ࣆ࣮ࢡࡢኚ໬ࡣ X ᪉ྥ࡟࠾࠸࡚㢧ⴭ࡛࠶ࡿࡀ㸪Y ᪉ྥ࠾ࡼࡧ Z ᪉ྥ࡟࠾࠸࡚ࡣࡑࡢኚ໬
ࡣᑠࡉ࠸ࡇ࡜ࡀ☜ㄆ࡛ࡁࡿ㸬ᚑࡗ࡚㸪⢒኱⤖ᬗ⢏ࡢᏑᅾ఩⨨࡟ࡼࡿᙳ㡪ࡣ Fig.7 ࡟࠾ࡅࡿ X ᪉ྥࡢࡳࢆ

Fig.7 ࡟࠾࠸࡚☜ㄆࡉࢀࡓ࡜࠾ࡾ㸪ࢤ࣮ࢪ࣮࣎ࣜࣗ

Fig.8 The causes of 2ș distribution in gage volume;࣒ෆ㒊࡛ 2ș ᅇᢡゅᗘࡢศᕸࡀ☜ㄆࡉࢀࡓ㸬ࡇࡢཎᅉ

Factor A: distribution of wavelength, Factor B:ࢆ⪃ᐹࡍࡿࡓࡵ࡟㸪ᅇᢡ⥺ࣆ࣮ࢡࡢdiffraction profile from the partial area in the gageᐃ఩⨨࡟ᙳ㡪

ࢆ୚࠼ࡿㄗᕪせᅉࢆ Factor A ࠾ࡼࡧ Factor B ࡜ࡋ࡚

volume.

Fig.8 ࡟ᅗᘧⓗ࡟♧ࡍ㸬
Factor A ࡣධᑕࡋ࡚ࡃࡿ୰ᛶᏊࡑࡢࡶࡢ࡟఩⨨ⓗ࣮ࡢ㒊ศ࡟୰ᛶᏊࡢධᑕࢆไ㝈ࡍࡿࢦ࣒ࢩ࣮ࢺࢆᤄ

࡞ศᕸࡀ࠶ࡾ㸪ࢤ࣮ࢪ࣮࣒࣎ࣜࣗෆ㒊ࡢᅇᢡ⥺࡟ᙳධࡋࡓ㸬ࡇࢀࡣ 5 ᯛࡢ▷෉≧ࢩࣜࢥࣥ࠿ࡽ࡞ࡿࣔࣀ

㡪ࢆ୚࠼࡚࠸ࡿ࡜⪃࠼ࡿሙྜ࡛࠶ࡿ㸬ࡑࡢཎᅉ࡜ࡋ

ࢡ࣓࣮ࣟࢱ࣮ࡢୖୗ 2 ᯛ࠿ࡽࡢ୰ᛶᏊࢆ࢝ࢵࢺࡋ㸪࡚ࡣࣔࣀࢡ࣓࣮ࣟࢱ࣮࡟࠾࠸࡚Ἴ㛗ࢆ㑅ูࡍࡿ㝿࡟୰ኸࡢࢩࣜࢥࣥ࠿ࡽᅇᢡࡍࡿ୰ᛶᏊࡔࡅࢆ㑅ᢥⓗ࡟⏕ࡌࡿἼ㛗ࡢศᕸ࡛࠶ࡿ㸬ࡘࡲࡾ㸪୰ᛶᏊࡢධᑕࣅ

ᢳฟࡍࡿࡇ࡜ࡀ࡛ࡁࡿࡢ࡛୰ᛶᏊࡢἼ㛗ศᕸࡀᑡ࡞

࣮࣒ࡣᆒ୍࡛ࡣ࡞ࡃ㸪఩⨨ࡢ㛵ᩘ࡜ࡋ࡚Ἴ㛗ࡀศᕸࡃ࡞ࡿ࡜⪃࠼ࡽࢀࡿ㸬ࡋ࡚࠸ࡿ࡜⪃࠼ࡿ㸬ࡇࡢࢦ࣒ࢩ࣮ࢺ࡟ࡼࡿධᑕ୰ᛶᏊࢆไ㝈ࡋࡓᐃ

Factor B ࡣࢤ࣮ࢪ࣮࣒࣎ࣜࣗෆࡢ୍㒊ศࢆ༨ࡵࡿ

ࡢ⤖ᯝࡣ㸪ᙜ↛࡞ࡀࡽᅇᢡ⥺ࡢᙉᗘࡢపୗࡀ࠶ࡿࡶ

⢒኱⤖ᬗ࠿ࡽ୰ᛶᏊࡀᅇᢡࡋ㸪ࣆ࣮ࢡࣉࣟࣇ࢓࢖ࣝ

ࡢࡢ㸪ᅇᢡゅᗘࡢኚ໬㔞Ǽ2ȟࡣ 0.46º ࡜࡞ࡾ㸪Fig.7(a)ࡢᙧ≧࡟ᙳ㡪ࢆ୚࠼࡚࠸ࡿሙྜ࡛࠶ࡿ㸬࠸ࢃࡺࡿȟ࡛♧ࡋࡓఱࡶไ㝈ࢆຍ࠼࡞࠸≧ែ࡜ྠࡌ್࡜࡞ࡗࡓ㸬-2ȟἲ࡛࠶ࢀࡤࡇࡢᙳ㡪ࡣ⌧ࢀ࡞࠸࡜⪃࠼ࡽࢀࡿࡀ㸪ࡲࡓ㸪ᅇᢡゅᗘࡢศᕸࡶ࡯ࡰྠᵝࡢศᕸ࡜࡞ࡾ㸪୧௒ᅇ౑⏝ࡋࡓࢹ࢕ࢸࢡࢱ࣮ࡀ PSD ᙧᘧ࡛࠶ࡿࡓࡵ㸪⪅ࡢ㐪࠸ࡣ☜ㄆ࡛ࡁ࡞࠿ࡗࡓ㸬X ⥺ᛂຊᐃ࡟࠾ࡅࡿȯࢮ୍ࣟᐃἲ࡜࡞ࡗ࡚࠸ࡿ㸬ࡇࡢ⤖ᯝࡼࡾ㸪ᅇᢡ⥺ࣆ࣮ࢡ఩⨨ࡀࢤ࣮ࢪ࣎ࣜࣗ

ࡇࡢࡓࡵ㸪ᅇᢡ࡟ᐤ୚ࡍࡿ⤖ᬗࡢ఩⨨㛵ಀࡀᩄឤ࡟

࣮࣒ෆ࡛ศᕸࡋࡓཎᅉࡣ㸪ᅇᢡ࡟ᐤ୚ࡍࡿ⤖ᬗ࡜ࢹ཯ᫎࡉࢀ࡚࠸ࡿ࡜⪃࠼ࡿ㸬࢕ࢸࢡࢱ࣮ࡢ఩⨨㛵ಀ࡟ᙳ㡪ࡉࢀ࡚࠸ࡿࡇ࡜ࡀ☜ㄆࡇࢀࡽ Factor A ࠾ࡼࡧ Factor B ࡛⾲⌧ࡉࢀࡿせᅉ࡛ࡁࡓ㸬ࡘࡲࡾ㸪ᅇᢡ⥺ศᕸࡢᨭ㓄ᅉᏊࡣ Factor Bࢆㄪ࡭ࡿࡓࡵ࡟㸪୰ᛶᏊࡀࣔࣀࢡ࣓࣮ࣟࢱ࣮࡛ᅇᢡ

࡛࠶ࡿ㸬ࡋ࡚ᑟ⟶࡟ධࡿᡭ๓㸪ࡘࡲࡾ㸪RESAϨࡢࢩࣕࢵࢱ

6.3 ᅇ㌿ᐃࡢᑟධࡇࢀࡲ࡛ࡢㄪᰝ⤖ᯝࡼࡾ㸪⢒኱⢏ࢆ ᐃࡍࡿ㝿࡟

JRR3ࠊRESAࠊṧ␃ᛂຊホ౯

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JAEA-Review 2013-040⏕ࡌࡿ ᐃㄗᕪ㸪ࡘࡲࡾ㸪2ș ᅇᢡゅᗘࡢࡤࡽࡘࡁࢆ

ࡳࢆ 2ș- sin2ȯ⥺ᅗ࡜ࡋ࡚♧ࡋࡓ⤖ᯝ࡛࠶ࡿ㸬ẁ㝵ⓗ⿵ṇࡍࡿ᪉ἲ࡜ࡋ࡚ Fig.9 ࡟♧ࡍヨᩱࡢ཯㌿࡟ຍ࠼ࡓᘬᙇ㈇Ⲵ࡟ᑐࡋ࡚ഴࡁࡀᑐᛂࡋ࡚࠾ࡾ㸪ᮏᐃࢆᥦ᱌ࡍࡿ㸬Fig.7 ࡟࠾࠸࡚᫂ࡽ࠿࡞ࡼ࠺࡟㸪ࢤ࣮ࢪ࣎ᐃࡢ᭷ຠᛶࡀ☜ㄆ࡛ࡁࡿ㸬࣮࣒ࣜࣗෆࡢᅇᢡ⥺ศᕸࡣᕥྑᑐ⛠࡛࠶ࡿ㸬ࡇࢀࢆ
81.5

Peak A ࡜ Peak B ࢆ ᐃࡍࡿ㸬୧⪅ࢆ ᐃࡍࡿ㝿࡟ࡣ
ヨᩱࢆ 180º ᅇ㌿ࡉࡏ࡚ ᐃࡍࡿࡓࡵ㸪⢒኱⤖ᬗࡢ఩⨨ࡀᕥྑᑐ⛠ࡢ఩⨨࡛ᐃ࡛ࡁࡿࡇ࡜࡟࡞ࡿ㸬ࡑࡢᚋ㸪୧⪅ࡢ ᐃ್ࢆᖹᆒࡍࢀࡤࢤ࣮ࢪ࣮࣒࣎ࣜࣗෆ
ࡢศᕸࢆ࢟ࣕࣥࢭࣝࡍࡿࡇ࡜ࡀ࡛ࡁࡿ㸬y(a)Peak A

Diffraction angle 2ș, deg.

฼⏝ࡋ࡚㸪Fig.9(a)࡟♧ࡍ㸪ྠࡌᅇᢡ㠃ࡢ⿬⾲࠿ࡽ

㻜㼻
㻝㻤㻜㼻

81.4

㻭㼢㼑㼞㼍㼓㼑

81.3
81.2
81.1
81.0
0.0

0.4

0.6

0.8

1.0

sin2ȥ

Ǚ

Load

0.2

Load
Fig.10 Result of half turn measurement of aluminumx

casting.

81.30

180º turn(b)

Peak B

Diffraction angle 2ș, deg.

Peak B

Average
Gage volume

81.25

81.20
㻜㻌㻹㻼㼍
㻞㻜㻌㻹㻼㼍
㻟㻜㻌㻹㻼㼍

81.15

81.10
0

0.2

0.4

0.6

0.8

1

2

Peak Asin ȥ
Fig.11 Result of 2ș- sin2ȯdiagram by half turnFig.9 Schematic diagram of half turn measurement.

measurement under several loading.
Fig.10 ࡟ᅇ㌿ᐃἲ࡛࢔࣑ࣝࢽ࣒࢘㗪㐀ᮦࢆ ᐃࡋࡓ⤖ᯝࢆ♧ࡍ㸬୍᪉ྥࡔࡅ࠿ࡽࡢ

7 ⤖ㄽᐃ࡛ࡣࡁࢃࡵ

࡚ࡤࡽࡘ࠸ࡓ ᐃ⤖ᯝ࡜࡞ࡿࡀ㸪180º ཯㌿ᚋࡢ ᐃ1) ᑠ༢⤖ᬗࢆ⏝࠸ࡓ ᐃࡢ⤖ᯝ㸪ࢤ࣮ࢪ࣮࣒࣎ࣜࣗ

ࢹ࣮ࢱ࡜ᖹᆒࢆྲྀࡿ࡜ࡤࡽࡘࡁࡣ࢟ࣕࣥࢭࣝࡉࢀ࡚㸪ෆ࡛ PSD ࢹ࢕ࢸࢡࢱ࣮࡜⤖ᬗࡢ఩⨨㛵ಀ࡟㉳ᅉࡍ2

ᶓ㍈ࢆ sin ȯ࡜ࡋࡓሙྜ࡟࡯ࡰ┤⥺࡟㏆࡙ࡃࡇ࡜ࡀ

ࡿᅇᢡ⥺ࣆ࣮ࢡࡢศᕸࡀⓎ⏕ࡋ࡚࠸ࡿ㸬☜ㄆ࡛ࡁࡿ㸬

2) ᅇᢡ⥺ࣆ࣮ࢡࡢศᕸࡣヨᩱࢆ 180º ཯㌿ࡉࡏ ᐃ2ࡲࡓ㸪sin ȯ=0.7 ௜㏆ࡢࡤࡽࡘࡁࡢ᭱ࡶ኱ࡁ࠸㒊್ࢆᖹᆒࡍࡿࡇ࡜࡛࡯ࡰ࢟ࣕࣥࢭ࡛ࣝࡁࡿ㸬ศ࡛ࡢኚ໬㔞Ǽ2ș ࡣ⣙ 0.3º ࡜࡞ࡾ Fig.7 ࡛☜ㄆࡉࢀ3) ࣟࢵ࢟ࣥࢢ࣮࢝ࣈἲ࡜཯㌿ἲ࡛ ᐃࡋࡓ 2ș- sin2

ࡓኚ໬࡟࡯ࡰᑐᛂࡍࡿ್࡛࠶ࡿ㸬ȯ⥺ᅗࡣ࡯ࡰ┤⥺࡜࡞ࡾ㸪㈇Ⲵ࡟ᑐࡋ࡚ࡑࡢഴࡁࡀ

ࡉࡽ࡟㸪Fig.11 ࡣ཯㌿ἲ࡟ࡼࡗ࡚ᚓࡽࢀࡓᖹᆒ್ࡢ

ᑐᛂࡋࡓ㸬

JRR3ࠊRESAࠊṧ␃ᛂຊホ౯

1-10-3
㻝㻢㻜- 169 -

JAEA-Review 2013-040

The 8th International Conference on Residual Stresses,

8 ௒ᚋࡢ᪉㔪ᖹᡂ 21 ᖺᗘࡢ JRR-3 ࡢ೵Ṇ࡞࡝ࡶ࠶ࡾ㸪᭱⤊┠ᶆࡢᴟపᐃࡀࡲࡔ࡛ࡁ࡚࠸࡞࠸㸬ࡉࡽ࡟㸪௒ᅇ

Denver, USA , 4–8 August, 2008 , p.173
3. X-Ray Stress Measurement of Coarse Grained Castࡢ⤖ᯝࡣ࢔࣑ࣝࢽ࣒࢘㗪㐀ᮦࢆᘬᙇヨ㦂∦ᙧ≧࡟ຍ

Aluminumᕤࡋ࡚⾜ࡗࡓࡓࡵ㸪」㞧ᙧ≧ࡢᐇ⏝㒊ᮦ㸪≉࡟ 180r

Takao Hanabusa, Masayuki Nishida, Daiki Tadashigeᅇ㌿ࡢ๓ᚋ࡛୰ᛶᏊࡢ㏱㐣⤒㊰㸦ࣃࢫ㸧ࡀ␗࡞ࡿᙧ

International≧ࡢሙྜ࡟ྠᵝࡢ

development and performance (AMDP2008).

ᐃ᪉ἲࡀ᭷ຠ࠿࡝࠺࠿ࢆุ᩿ࡍ

conferenceonadvancedmaterials

ࡿᚲせࡀ࠶ࡿ㸬ᚑࡗ࡚㸪ᮏ◊✲ࡣ௨ୗࡢ 2 Ⅼ࡟ࡘ࠸

2008,10,13-15, Beijing, China, CD-ROM proceeding.

࡚⥅⥆ⓗ࡟ ᐃࢆ⾜࠺ணᐃ࡛࠶ࡾ㸪ᖹᡂ 23 ᖺᗘࡢ኱4. Neutron Stress Measurement of Coarse Crystal GrainᏛ㛤ᨺ◊ࡢ᪋タඹྠ฼⏝࡟⏦ㄳࡉࡏ࡚࠸ࡓࡔ࠸࡚࠸

in Aluminum Casting Alloyࡿ㸬

MASAYUKI Nishida, TAKAO Hanabusa, TATSUYA
Matsue and HIROSHI Suzuki㸯㸬⢒኱⤖ᬗ⢏ࢆྵࡴ࢔࣑ࣝࢽ࣒࢘㗪㐀ྜ㔠ࡢ୰ᛶ

The 5th International Conference on Mechanical StressᏊᛂຊ ᐃ㸦」㞧ᙧ≧ࢆᣢࡘᐇ⏝㒊ᮦ࡟㐺⏝㸧

Evaluation by Neutrons and Synchrotron Radiation㸰㸬⢒኱⤖ᬗ⢏ࢆྵࡴ࢔࣑ࣝࢽ࣒࢘㗪㐀ྜ㔠ࡢ͆ᴟ

(MECASENS V), 2009.11.10-12 , p.133, Ibaragi, Japan.

ప͇୰ᛶᏊᛂຊ

ᐃ
ᅜෆ఍㆟Ⓨ⾲
9 ᡂᯝࡢබ⾲

1. 㗪㐀⢒኱⤖ᬗᮦᩱࡢ୰ᛶᏊᛂຊ ᐃㄽᩥす⏣┿அ㸪ᇛ㩗⨾㸪Ώ㑓⩏㝯㸪M. Rifai,Tiang Jing㸪

1. Neutron Stress Measurement of Coarse Crystal Grainⱥᓫኵ㸪ᩧ⸨ᚭ㸪㕥ᮌ⿱ኈin Aluminum Casting Alloy➨ 43 ᅇ 㹖 ⥺ ᮦ ᩱ ᙉ ᗘ ࡟ 㛵 ࡍ ࡿ ࢩ ࣥ ࣏ ࢪ ࢘ ࣒ ,MASAYUKI Nishida, TAKAO Hanabusa, TATSUYA

2008.7.10-11㸪ᮾி㸪pp.194-199

Matsue and HIROSHI Suzuki

2. ⢒኱⤖ᬗ⢏ᮦࡢ୰ᛶᏊᛂຊ

Materials Science Forum Vol. 652 (2010) pp 243-248.

す⏣┿அ㸪ⱥᓫኵ㸪ᇛ㩗⨾㸪Ώ㑔⩏㝯㸪ᩧ⸨ᚭ㸪㕥

2. Neutron Stress Measurement of Coarse Crystal Grainᮌ⿱ኈin Aluminum Casting Alloy᪥ᮏᮦᩱᏛ఍➨57ᮇᏛ⾡ㅮ₇఍㸪㮵ඣᓥ㸪pp.301-302,

MASAYUKI Nishida, TAKAO Hanabusa, TATSUYA

2008.5-24-25

Matsue and HIROSHI Suzuki

3. ⢒኱⤖ᬗ⢏ࡢ୰ᛶᏊᛂຊ

Materials Science Forum, in press.

す⏣┿அ㸪ⱥᓫኵ㸪Ώ㑔⩏㝯㸪㕥ᮌ⿱ኈᐃᐃ➨ 52 ᅇ ᪥ ᮏ Ꮫ ⾡ ఍ ㆟ ᮦ ᩱ ◊ ✲ 㐃 ྜ ㅮ ₇ ఍ 㸪ᅜ㝿఍㆟Ⓨ⾲

2008.10/22-24㸪ி㒔㸪pp.231-232

1. Residual Stress Measurement of Coarse Crystal Grain

4. ⢒኱⤖ᬗࢆ᭷ࡍࡿ࢔࣑ࣝࢽ࣒࢘㗪㐀ྜ㔠ࡢ୰ᛶ

in Titanium Casting Alloy by Neutron DiffractionᏊᛂຊ ᐃ

Masayuki Nishida, Ayumi Shiro, Tiang Jing, M.Rifai

す⏣┿அ, ᯇⱥ㐩ஓ, ⱥᓫኵ, 㕥ᮌ⿱ኈ

Muslih, Takao Hanabusa➨ 44 ᅇ 㹖 ⥺ ᮦ ᩱ ᙉ ᗘ ࡟ 㛵 ࡍ ࡿ ࢩ ࣥ ࣏ ࢪ ࢘ ࣒ ,The 8th International Conference on Residual Stresses,

2010.7.8-9㸪ி㒔Denver, USA , 4–8 August, 2008 , p.169
2. Diffraction Stress Measurement on Coarse Grained
Materials
Takao Hanabusa, Kazuya Kusaka, Masayuki. Nishida

JRR3ࠊRESAࠊṧ␃ᛂຊホ౯

1-10-3㻝㻢㻝- 170 -

JAEA-Review 2013-040

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1.  ୰ ᛶᏊᩓ஘ 11 ࡑࡢ௚ 

1. Neutron Scattering- 171 -

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JAEA-Review 2013-040

1-11-1

Renovation of Ge-crystal monochromator for triple-axis neutron spectrometer
AKANE
H. Hiraka, Y. Miyake, K. Ohoyama, Y. Yamaguchi, K. Yamada
Institute for Materials Research, Tohoku University
Neutron scattering spectroscopy is a powerful probe to study phonon and magnon
excitations in condensed matter physics.
Renovation of neutron monochromator,
which properly branches monochromatic
neutrons from a white beam, is therefore
one of the instrumental key issues in neutron science; especially, due to the lack ofneutron beam ﬂux. Ge and Si single crytals have been one of the typical components for neutron monochromator, because
high-quality and large-size crystals are easily available. However, because of a mismatch between the incident-beam divergence and the small mosaicity coming fromperfect crystals, the neutron reﬂectivity ofGe and Si is severly low and much efforts
have been devoted so far to overcome it.
We have tried to introduce mosaic crystals into Ge crystals appropriately by pressing at high temperatures. Eventually, an
optimal hot-pressing condition was determined [1,2], so that Ge crystals with a mosaic width of ˜0.3 ° and a peak reﬂectivity of ˜40% are well reproduced [Fig.1(a)].
A vertically focusing-type Ge monochromator, which was renewed for a KINKEN
triple-axis spectrometer AKANE, is shownin Fig.1(b).
We substituted this renewed monochromator for the previous one on AKANE,
and ﬁrst characterized the beam size of
24w*32h mm2 at the sample position. This
area is about 1.5 times as large as the previous one, and the neutron density per
area is conﬁrmed to be unchanged. Second, we radiated the monochromatic neutron beam (λ=2.0 A) onto relatively large
samples and measured scattered-neutron
intensity. Figure 1(c) shows a comparisonof reﬂected intensity with previous one byusing a large sample. The magnetic Bragg
reﬂections are enhanced in intensity by

˜60%, as expected from the beam size. Further, a newly supplied second-wavelength
mode (λ=1.3 A) works well for highenergy excitation measurements, as seen in
Fig. 1(d). Present renovation not only vitalizes the scientiﬁc research on AKANE, butalso opens new fundamental techniques onneutron scattering.
References[1] Y. Miyake, H. Hiraka, K. Ohoyama,
Y. Yamaguchi, K. Yamada; J. Phys. (Conf.
Ser.), accepted on Sep. 04 in 2009.
[2] Y. Miyake, Master Thesis of Science (Tohoku University, Feb. in 2010).

Fig. 1. (a) Rocking curves of Ge piece before andafter hot-press. (b) Renovated Ge(113) monochromator. (c) Magnetic Bragg peaks before and after
monochromator renovation. (d) Phonon peak under
the newly equipped second-wavelength mode.

Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
Report Number: 1071

- 173 -

JAEA-Review 2013-040

1-11-2

Activity in 2009 of Kinken Powder Diﬀractometer HERMES
K. Ohoyama
Institute for Materials Research, Tohoku Univ.
In 2009, 42 days were used as IRT experiments: experiments for substitute proposal: 16 days, experiments for IRT members; 18days , and 8day for maintenance.
A noteworthy result is that polarized neutron diffraction experiments are succeededon HERMES with a 3He spin ﬁlter method.
We succeeded in observing ﬂipping ratio of
single crystal of Cu2MnAl and Ni powder.
In Fig.1, Flipping ration of the 111 reﬂection of Cu2MnAl single crystals obtainedon HERMES. The effective polarization
was about 15%; though this effective polarization was quite poor because of problems of connection of magnetic ﬁelds, thisexperiment was the ﬁrst diffraction experiment with a 3He spin ﬁlter in Japan. Since
HERMES has wide observable Q range, polarised HERMES is quite suitable for investigations of magnetic diffuse scattering, inparticular, ferromagnetic metallic glasses.
Note that the He spin ﬁlter method isimportant for spectrometers in J-PARC as
well as HERMES. In 2010, IRT has began polarized neutron diffraction experiments to observe magnetic diffuse scattering of magnetic metal alloys. This project isbased on collaboration among KEK-JAEATohoku Univ.
Another important development is practical application of high energy mode on
HERMES. Rotating Ge 331 monochrometer by just about 5 °, user can user 1.1A neutron, which make it possible to observe up
to 11A-1. By the high energy mode, IRT
group has succeeded in observing magnetic reﬂections of ErB2C2 up to 9A-1,
which gave whole information of magnetic
form factor of Er3+. This mode is quite
useful for magnetic metallic glasses as well
as observation of magnetic form factor.

pumping system, which make it possible toobtain stable and high polarization beam,2) installation of 20cm Ge monochrometer,
which gives about 1.7 times stronger beamﬂux, 3) installation of a slave machine foreducational purpose.

Fig. 1. Flipping ratio of 111 reﬂection of Cu2MnAl
single crystals obtained on Polirised HERMESIn 2010, HERMES has a plan of upgrades;
1) installation of 3He ﬁlter with laser
Activity Report on Neutron Scattering Research: Experimental Reports 17 (2010)
Report Number: 1203

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JAEA-Review 2013-040

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2.  ୰ ᛶᏊࣛࢪ࢜ࢢࣛࣇ࢕ 

2. Neutron Radiography- 175 -

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JAEA-Review 2013-040

2-1
Development of the Imaging System Using a Neutron Color Image Intensiﬁer
R. Yasuda, T. Nojima, H. Iikura, T. Sakai and M. Matsubayashi
Quantum Beam Science Directorate, JAEA, Tokai, Ibaraki 319-1195

We continued a project to develop a highresolution neutron-imaging system with approximately 10 μm spatial resolution to visualize regions of ≤0.2 mm thickness such as amembrane-electrode assembly including a gas
diﬀusion layer in a fuel cell using the thermal neutron radiography facility (TNRF). To
improve the spatial resolution of the neutronimaging system, we developed the imaging
system using a neutron color image intensiﬁer (NCII)1) .
An NCII is an electron tube used for realtime neutron imaging by converting a neutron
proﬁle to a visible image. We chose B4 C asa neutron converter material because it haslarge neutron capture cross-section and is lesssensitive to gamma-ray than Gd2 O3 . B4 C
is deposited on the aluminum substrate anda CsI acicular scintillator is deposited onto
the B4 C layer as an input phosphor layer.
10 B C emits α particle after capturing neu4
tron, α particles from 10 B4 C are incident in
a CsI acicular scintillator and emit photons.
2) Comparing with the range in a CsI acicular scintillator, that one of internal conversion electrons from Gd2 O3 is about 20 μm,
and 4 μm for α particles from 10 B4 C. Therefore, higher spatially resolved neutron image
is obtainable. The diameter of the NCII sensitive area can be selected among 2 and 4 inch
simply by changing the electric lens conﬁguration on demand. By combining this image
intensiﬁer with a suitably tuned high-sensitive
color CMOS (Complementary Metal Oxide
Semiconductor Image Sensor) camera with
5,614 x 3,744 pixels through a large macrolens and a mirror system, higher sensitivity
and wider dynamic range are simultaneously
attained.(see Fig. 1) The results of experiments using a sensitivity indicator (SI) 3) ,at the MUSASI-L port (ﬂux:1.0×106 n/cm2 ·s)showed that the B4 C-type NCII system canclearly resolve the narrowest gap of 12.7 μm
原子炉：JRR-3

prepared in the SI as shown in Fig. 2. It
was conﬁrmed that the B4 C-type NCII system meet the requirement for fuel cell imaging.

Figure 1: Schematic diagram of the B4 C-type neutroncolor image intensiﬁer imaging system.

Figure 2: Captured image of the sensitivity indicatorby the system. The 12.7 μm wide gap was clearlyobserved.

References
1) K. Nittoh, C. Konagai, T. Noji and K. Miyabe:“New feature of the neutron color image intensiﬁer ”, Nucl. Instr. and Meth. A 605, pp. 107-110(2009).
2) K. Nittoh :“ Neutron Color I.I.TM Spawning New
Applications for Inspection Technologies”, TOSHIBAREVIEW 2009. VOL.64 NO.7 (2009).
3) J.W.F. Markgraf and R. Matﬁeld :“ Practical Neutron Radiography , ed. J.C. Domanus (Kluwer
Academic Publishers, Dordrecht, 1992), 175- 178.

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分野：中性子ラジオグラフィー（その他）

JAEA-Review 2013-040

2-2
Upgrading of Experimental Circumstances in TNRF
T. Nojima, H. Iikura, R. Yasuda, T. Sakai, H. Hayashida1 and M. Matsubayashi
Quantum Beam Science Directorate, JAEA, Tokai, Ibaraki 319-1195
1
J-PARC Center, Tokai, Ibaraki 319-1195

JRR-3 thermal neutron radiography facility (TNRF) has two radiography rooms. The
room closest to the reactor core is named
TNRF-1 and the other named TNRF-2. The
original TNRF-2 was 700 mm wide, 2000 mm
long and 1790 mm tall. The entrances to thisroom are a biological shielding door and a1000 mm x 860 mm roof hatch. The biologicalshield of TNRF-2 consisted of 300 mm thicksteel, 220 mm thick polyethylene (PE) and 30
mm thick boron contained PE (BPE) for themain part of the roof and the side walls. In
order to meet users requirements and to improve experimental circumstances, we decided
to expand the inner space of TNRF-2. As theresult of shielding calculation using ANISN
code, it was conﬁrmed that the shielding consisting of 300 mm thick steel, 85 mm thickPE and 25 mm thick BPE meet the requirement from the radiation protection guidelinein JRR-3 (≤25μSv/h). The inner space of
TNRF-2 was expanded to 980 mm wide, 2000
mm long and 1930 mm tall as shown in Fig. 1.
After the expansion work, the shielding measurement was conducted and the highest dose
equivalent rate of 14 μSv/h was obtained.
We introduced a state of the art fuel cell
control and testing infrastructure to TNRF.
Figure 2 shows the schematic diagram of
TNRF fuel cell infrastructure. Available forgeneral use are a fuel cell test stand, an electronic load device, a humidiﬁcation system, ahydrogen supply system, as well as suppliesof other gases, hydrogen detectors and alarm,interlock system and so on. The fuel cell test
stand is the most important component andallows users to control the humidity, pressure,
ﬂow rate, temperature and gas composition of
the fuel gases entering the fuel cell.
We selected a storage-alloy-type hydrogen tank forsafety reason.

原子炉：JRR-3

Figure 1: Inside view of TNRF-2 from the shielding
door opening. Left side photograph was taken before
the expansion work and right one after the work.

Figure 2: Schematic diagram of TNRF fuel cell infrastructure.

装置：NRF(7R, C2-3-3-1)- 178 -

分野：中性子ラジオグラフィー（その他）

JAEA-Review 2013-040

2-3
Three-Dimensional Observation of Water Distribution in PEFC by Neutron CT
N. Takenaka, H. Asano, H. Murakawa, K. Sugimoto, R. Yasuda1 and M. Matsubayashi1
Department of Mechanical Engineering, Kobe University, Rokkodai, Kobe 657-8501
1
Quantum Beam Science Directorate, JAEA, Tokai, Ibaraki 319-1195

A polymer electrolyte fuel cell (PEFC)
consists of a membrane electrode assembly(MEA), gas diﬀusion layers (GDL), hydrogenand oxygen supply channels. At the anode,
protons and electrons are generated, while atthe cathode the protons and electrons combine to form water. The condensed water may
aﬀect on the fuel cell performances. In order to clarify the water eﬀects on the PEFC,
neutron radiography is a powerful tool for visualizing the in-situ PEFC, and we have tried
for measuring the water transport phenomena
by using neutron radiography systems.1−3) In
this study, three-dimensional observation ofwater distribution in the PEFC by neutroncomputed tomography (CT) was carried out.

the water exist around both in the channel
and O-ring. Existence of water in the PEFC
could be conﬁrmed three-dimensionally by using the neutron CT. In this study, the spatial
resolution of 50 μm was achieved.
Three-dimensional water distribution was
obtained by using neutron radiography, andexistence of water in the PEFC could be conﬁrmed. Although water existed around Oring, it was possible to detect the water position in the PEFC. The spatial resolution of
50 μm was achieved.
Acknowledgement
This research acknowledges NEDO to ﬁnancial support.

In order to observe the detail water distributions around the MEA and the GDL, amicro-CT PEFC had been developed. Figure 1 shows the visualized PEFC. The MEA
and the GDL are sandwiched between air andhydrogen gas channels. Size of the gas channel is 1 mm-width and 0.5 mm-depth. Under the operation, the PEFC was kept atroom temperature, hydrogen was supplied at
20 cc/min, air was supplied at 30 cc/min
and current density was set at 245 mA/cm2 .
Pictures were taken by a cooled CCD camera (PIXIS 1024, Princeton Instruments) withresolution of 1024×1024 pixels and grey scaleof 16 bit. A picture was taken every 2.25 degree. The exposure time was set at 15 sec.
A CT was carried out using the 80 pictures
which correspond to 180 degree.
Figure 2 shows the CT reconstructed images at middle height of the PEFC. The existence of the O-ring is clearly seen before thePEFC operation. After the operation, water
was generated in the PEFC. As a result, water is observed in the channel. Furthermore,
image processing for obtaining the water distribution was carried out. It can be seen that
原子炉：JRR-3

Figure 1: Visualized Small-sized PEFC for CT.

Figure 2: CT reconstructed images.

References
1) T. Ueda, et al., J. Power and Energy Systems,
Vol.2, No.3, pp.997-1008 (2008).
2) I. Sakata, et al., Nucl. Instr. and Meth. A 605,131-133 (2009).
3) H. Murakawa, et al., Nucl. Instr. and Meth. A 605,
127-130 (2009).

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分野：中性子ラジオグラフィー（その他）

JAEA-Review 2013-040

2-4୰ᛶᏊࣛࢪ࢜ࢢࣛࣇ࢕࡟ࡼࡿ࢚ࢿࣝࢠ࣮ᶵჾෆ⇕ὶື⌧㇟ࡢྍど໬࣭ィ ࡢ㧗ᗘ໬Development of Visualization and Measurement Method using Neutron Radiography
for Thermal Hydraulics Phenomena in Energy Equipment⚄ᡞ኱Ꮫ኱Ꮫ㝔ᕤᏛ◊✲⛉ᶵᲔᕤᏛᑓᨷ㸸➉୰ಙᖾ㸪ὸ㔝➼㸪ᮧᕝⱥᶞ㸪ᮡᮏ຾⨾ᮾி㒔ᕷ኱ᏛᕤᏛ㒊ཎᏊຊᏳ඲ᕤᏛ⛉㸸ᣢᮌᖾ୍㸯㸬ࡣࡌࡵ࡟

ീࢆ࣓࡛࢝ࣛ᧜ᙳࡍࡿࡀ㸪ィ ࢚ࢿࣝࢠ࣮ኚ᥮ᶵჾ㸪࢚ࢿࣝࢠ࣮㍺㏦ᶵჾ㸪ࡑࣞࣥࢪࡣ㸪ヨ㦂యࡢᵓ㐀࡜࡜ࡶ࡟᳨ฟჾࡢࢤ࢖ࣥ

ࡋ࡚㟁Ꮚᶵჾ෭༷ᶵჾ࡛ࡣ㸪ᶵჾෆ㒊ࡢ⇕ὶື⌧࡟౫Ꮡࡍࡿ㸬୰ᛶᏊ࢖࣓࣮ࢪ࢖ࣥࢸࣥࢩࣇ࢓࢖࢔

㇟ࡀᶵჾᛶ⬟࡟ཬࡰࡍᙳ㡪ࡀ኱ࡁࡃ㸪ᛶ⬟ᨵၿ࡟㸦௨ୗ㸪୰ᛶᏊ I.I.࡜ࡍࡿ㸧ࡀ㛤Ⓨࡉࢀ㸪୰ᛶᏊᙉࡣὶື≧ἣࡢᢕᥱࡀᚲせ࡛࠶ࡿ㸬≉࡟㸪ὶయࡀ┦

ᗘ࠿ࡽྍど⏬ീ㍤ᗘ࡬ࡢ㧗࠸ࢤ࢖࡛ࣥࡢኚ᥮ࡀ

ኚ໬ࢆక࠺ሙྜ࡞࡝Ẽᾮ஧┦ὶ࡜ࡋ࡚ὶືࡍࡿ

ྍ⬟࡜࡞ࡗࡓࡇ࡜࠿ࡽ㸪᧜ീࢩࢫࢸ࣒ࡢᛶ⬟ホ౯ሙྜ࡟ࡣ㸪⇕ὶື≉ᛶࡣὶືᵝᘧ࡟ᙉࡃ౫Ꮡࡋ㸪

ࢆවࡡ࡚㏱㐣ཌࡉࡀཌࡃ」㞧࡞ᵓ㐀ࢆ᭷ࡍࡿ 4 ࢫࡑࡢὶືᵝᘧࡣὶ㊰ᙧ≧࡟ᙉࡃ౫Ꮡࡍࡿࡓࡵ㸪ᐇࢺ࣮ࣟࢡ࢚ࣥࢪࣥࡢྍど໬ࢆ⾜ࡗࡓ㸬ᅇ㌿ࡍࡿ࢚ᶵ࡛ࡢὶືᣲືࡢྍど໬ࡀᚲせ࡜ࡉࢀࡿ㸬୍⯡࡟㸪ࣥࢪࣥࢆື⏬ほᐹࡋ㸪ෆ㒊ᶵᵓࡢືࡁ࡜₶⁥Ἔࡢ⇕⛣ືࢆక࠺࢚ࢿࣝࢠ࣮ᶵჾࡣ㔠ᒓᐜჾ࡛ᵓᡂ

ᣲືࢆ᫂ࡽ࠿࡟ࡍࡿࡇ࡜ࢆ┠ⓗ࡜ࡍࡿ㸬࡛ࡢࢲ࢖ࢼ࣑ࢵࢡ

ࡉࢀ㸪」㞧࡞ᵓ㐀ࢆ᭷ࡋ࡚࠸ࡿࡇ࡜࠿ࡽ㸪ࡑࡢᙧ≧ࡸ⇕⛣ື᮲௳ࢆ⥔ᣢࡋ࡚㸪ὶ㊰ቨࢆྍど㒊ᮦ࡛

2.2 ᐇ㦂⿦⨨⨨᥮ࡋྍど໬ࡍࡿࡇ࡜ࡣᅔ㞴࡛࠶ࡿ㸬X ⥺࡛ࡢྍ ౑⏝ࡋࡓ࢚ࣥࢪࣥࡢእほࢆ Fig.1 ࡟♧ࡍ㸬25ccど໬ࢆ⪃࠼ࡿሙྜ㸪X ⥺ࡣ㔠ᒓ࡛ࡢῶ⾶ࡀ኱ࡁࡃ㸪ࡢ 4 ࢫࢺ࣮ࣟࢡ㎰ᴗ࣏ࣥࣉ⏝ᑠᆺ࢚ࣥࢪ࡛ࣥ࠶ࡿ㸬ࡑࢀ࡟ᑐࡋỈࡸ෭፹࡛ࡢῶ⾶ࡀᑠࡉ࠸ࡇ࡜࠿ࡽ㸪ᮏయࡣ࢔࣑ࣝࢽ࣒࢘〇࡛࠶ࡿ㸬ᐇ㦂࡛ࡣ⇞ᩱ࡟ࡼࡸࡣࡾᅔ㞴࡛࠶ࡿ㸬ࡿ㐠㌿࡛ࡣ࡞ࡃ㸪㟁Ẽ࣮ࣔࢱ㥑ື࡛ᅇ㌿ࡉࡏࡓ㸬 ⇕୰ᛶᏊ⥺ࡣ㸪ከࡃࡢ㔠ᒓࢆࡼࡃ㏱㐣ࡍࡿ୍᪉㸪ᐇ㦂⿦⨨ࡣࢱ࣮ࣥࢸ࣮ࣈࣝୖ࡟タ⨨ࡋ㸪ࢱ࣮ࣥࢸỈࡸỈ⣲ཎᏊࢆྵࡴὶయ㸪ࡑࡋ࡚≉ᐃࡢඖ⣲࡟ࡼ࣮ࣈࣝࡢᅇ㌿࡛↷ᑕ᪉ྥࢆタᐃࡋࡓ㸬࢚ࣥࢪࣥෆ

ࡃῶ⾶ࡍࡿ≉ᛶࢆ᭷ࡍࡿࡇ࡜࠿ࡽ㸪㔠ᒓෆࡢὶయ

ࡢ࢜࢖ࣝࡢᚠ⎔ࡣ㸪ࣆࢫࢺࣥࡢୖୗື࡟ࡼࡿᅽຊࡢྍど໬࡟㐺ࡋ࡚࠸ࡿ㸬ᮏ◊✲࡛ࡣ㸪࢚ࢿࣝࢠ࣮

ኚືࡀ㥑ືຊ࡜࡞ࡾ㸪ࣃ࢖ࣉࢆ㏻ࡋ࡚࢚ࣥࢪࣥୗ

ᶵჾෆ㸪≉࡟ᐇ⏝ᶵჾෆࡢὶື⌧㇟ࡢྍど໬࣭ィ㒊࠿ࡽ࣒࢝ࢠࣖ࣎ࢵࢡࢫ࠾ࡼࡧࢡࣛࣥࢡࢣ࣮ࢫ

ࢆࡶ࡜࡟ᶵჾᛶ⬟࡟ཬࡰࡍᙳ㡪ࢆ᫂ࡽ࠿࡟ࡍ

࡟౪⤥ࡉࢀࡿ㸬ࡇࡇ࡛ࡣ㸪࢚ࣥࢪࣥᅇ㌿࡟ࡼࡿ₶ࡿࡇ࡜ࢆ┠ⓗ࡜ࡍࡿ㸬ᐇ㦂ࡣ㸪JRR-3 ᐇ᫬㛫⇕୰⁥Ἔࡢᚠ⎔ࡢᵝᏊࢆྍど໬ࡋࡓ㸬ᛶᏊࣛࢪ࢜ࢢࣛࣇ࢕ࢩࢫࢸ࣒࡟࠾࠸࡚⾜ࢃࢀࡓ㸬 ࡇࡇ࡛ࡣ㸪㹟㸬ᑠᆺࣞࢩࣉ࢚ࣟࣥࢪࣥෆ₶⁥࢜࢖ࣝࡢᣲື
㹠㸬ࣉ࣮ࣞࢺ⇕஺᥮ჾෆ෭፹ᣲື
㹡㸬᭤ࡾࢆ᭷ࡍࡿࣄ࣮ࢺࣃ࢖ࣉෆ෭፹ᣲື
࡟ᑐࡍࡿ◊✲ᡂᯝࢆሗ࿌ࡍࡿ㸬㸰㸬ᑠᆺࣞࢩࣉ࢚ࣟࣥࢪࣥෆ₶⁥࢜࢖ࣝࡢᣲື
2.1 ⫼ᬒ࡜┠ⓗ ᐇ᫬㛫୰ᛶᏊࣛࢪ࢜ࢢࣛࣇ࢕࡛ࡣヨ㦂య࡛ῶ⾶ࡋࡓ୰ᛶᏊ⥺ࢆ᳨ฟ㒊࡛ྍどග࡟ኚ᥮ࡋ㸪ࡑࡢ

Fig.1 Visualized engine.

JRR-3㸪⇕୰ᛶᏊࣛࢪ࢜ࢢࣛࣇ࢕⿦⨨㸪⇕ὶయ㻝㻠㻟- 180 -

JAEA-Review 2013-040

 ࢚ࣥࢪࣥࡢᅇ㌿ᩘࡣ 300rpm ࠿ࡽ 1200rpm ࡢ⠊ᙉࡃᙳ㡪ࢆཬࡰࡍ㸬ࡇࢀࡲ࡛㸪ᆶ┤㠃࡟㓄⨨ࡉࢀᅖ࡛タᐃࡋࡓ㸬୰ᛶᏊ I.I. ࡜࣮࢝ࣛCCD ࣓࡛࢝ࣛࡓ༢ὶ㊰࡟ᑐࡍࡿἛ㦐⇕ఏ㐩≉ᛶࢆᐇ㦂ⓗ࡟ホື⏬㸦30 fps㸧ࡀ᧜ᙳࡉࢀࡓ㸬࣮࢝ࣛCCD ࣓࢝ࣛ౯ࡋ࡚ࡁࡓࡀ㸪⇕㏻㐣⋡ࡣ෭፹ࡀୗ㝆ὶ࡜࡞ࡿ᪉ࡣᮾⰪ〇࡛࠶ࡾ㸪㍤ᗘ㝵ㄪࡣ 8 bit㸪⏬⣲ᩘࡣࡀୖ᪼ὶࡢሙྜࡼࡾ 10㸣⛬ᗘ㧗ࡃ࡞ࡗࡓ㸬㏻ᖖ㸪

640×480 ࡛࠶ࡿ㸬ࢩࣕࢵࢱ࣮ࢫࣆ࣮ࢻࡣ 1/500ᾋຊ࡟ࡼࡾ⵨Ẽࡀ᤼ฟࡉࢀࡸࡍ࠸ୖ᪼ὶࡢ࡯࠺

second ࡜ࡋࡓ㸬ࡀఏ⇕ᛶ⬟ࡣ㧗࠸࡜ࡉࢀ㸪཯ᑐࡢഴྥࡀᚓࡽࢀࡓ㸬ࡇࢀࡣ㸬⇕஺᥮ჾෆ㒊ࡢ┦ศᕸࡢᙳ㡪ࡀ኱ࡁ࠸࡜

2.3 ᐇ㦂⤖ᯝ⪃࠼ࡽࢀࡿࡇ࡜࠿ࡽ㸪ୖ᪼ὶ࡛ࡢᛶ⬟ຎ໬ࡢせᅉ ࢚ࣥࢪࣥෆ㒊࡟࢜࢖ࣝࡀ‶ࡓࡉࢀ࡚࠸࡞࠸᫬

ࢆ᫂ࡽ࠿࡟ࡍࡿࡓࡵ㸪୰ᛶᏊࣛࢪ࢜ࢢࣛࣇ࢕࡛ࡑࡢྍど໬⏬ീࢆ Fig.2 ࡟♧ࡍ㸬࢔࣑ࣝࢽ࣒࢘〇࣎ࡢὶືᣲືࢆྍど໬ࡋ㸪┦ศᕸ࠾ࡼࡧẼᾮ┦ᑐ㏿

ࢹ࢕࣮ࢆ㏱㐣ࡋ㸪ෆ㒊ࡢᵓ㐀ࡀྍど໬ࡉࢀ࡚࠸ࡿ㸬ᗘࡢᣦᶆ࡜࡞ࡿᖹᆒ࣎࢖ࢻ⋡ࢆィࡋࡓ㸬ࣆࢫࢺࣥ㸪࣒࢝ࢠ࢔㸪ࢡࣛࣥࢡࢩࣕࣇࢺ㸪྾᤼Ẽࣂࣝࣈ࡞࡝ࡢෆ㒊ࡢ㒊ရࡣ୰ᛶᏊ⥺ࡢῶ⾶ࡀ኱ࡁࡃ㸪㯮ࡃྍど໬ࡉࢀ࡚࠸ࡿ㸬ື⏬࡟࠾࠸࡚ࡶᅇ
㌿࡟ྠᮇࡋࡓ㒊ရࡢ㐠ືࢆࡣࡗࡁࡾ࡜ぢ࠼㸪྾Ẽ㸪ᅽ⦰㸪⭾⬽㸪᤼Ẽࡢ 4 ⾜⛬ࢆ☜ㄆ࡛ࡁࡓ㸬 ࢚ࣥࢪࣥෆ㒊ࡀ࢜࢖࡛ࣝ‶ࡓࡉࢀࡓ᫬ࡢྍど໬⏬ീࢆ Fig.3 ࡟♧ࡍ㸬Fig.2 ࡛ぢ࠼࡚࠸ࡓ࣒࢝ࢠ
࢔ࡸࢡࣛࣥࢡࢩࣕࣇࢺࡣ࢜࢖ࣝ࡟ࡼࡗ࡚ぢ࠼࡞ࡃ࡞ࡾ㸪࣒࢝ࢠࣖ࣎ࢵࢡࢫࡸࢡࣛࣥࢡࢣ࣮ࢫෆ࡟
࢜࢖ࣝࡀ‶ࡓࡉࢀ㯮ࡃྍど໬ࡉࢀ࡚࠸ࡿࡢࡀࢃ
࠿ࡿ㸬࢜࢖ࣝࡢᣲືࢆ㩭᫂࡟ࡍࡿࡓࡵ㸪࢜࢖ࣝࡀ࠶ࡿ⏬ീ࠿ࡽ࢜࢖ࣝࡀ࡞࠸⏬ീࢆᕪࡋᘬࡁ㸦₇⟬࡛ࡣ๭ࡾ⟬㸧㸪࢜࢖࡛ࣝࡢῶ⾶ࢆྍど໬ࡋࡓ㸬⏬

Fig.2 Visualized image
without oil

Fig.3 Visualized image
with oilRocker roomീฎ⌮ࡣ࢚ࣥࢪࣥࡢືࡁ࡟ྠᮇࡉࡏ㐃⥆ࣇ࣮࣒ࣞ࡟ᑐࡋ⾜ࡗࡓࡀ㸪ࡇࡇ࡛ࡣ 1 ࣇ࣮࣒ࣞࢆྲྀࡾฟ
ࡋ㸪Fig. 4 ࡟♧ࡍ㸬࢜࢖ࣝࡢࡳࡀ㯮ࡃྍど໬ࡉࢀ

Delivery pipes࡚࠸ࡿࡢࡀࢃ࠿ࡿ㸬ࡇࢀࡼࡾ࢚ࣥࢪࣥࡢᶵᵓ࡜࢚
ࣥࢪࣥᅇ㌿᫬ࡢྛ㒊ရ࡬ࡢ࢜࢖ࣝ౪⤥ࡢὶࢀࢆ㩭᫂࡟ྍど໬ࡍࡿࡇ࡜ࡀ࡛ࡁࡓ㸬㸱㸬ࣉ࣮ࣞࢺ⇕஺᥮ჾෆ෭፹ᣲື
3.1 ◊✲⫼ᬒ ㏆ᖺ㸪┬࢚ࢿࣝࢠ࣮࡜࡜ࡶ࡟⇕࢚ࢿࣝࢠ࣮ࡢ᭷
ຠ฼⏝࡟ᑐࡍࡿせồࡢ㧗ࡲࡾ࠿ࡽ㸪⇕஺᥮ჾࡢ㧗ᛶ⬟໬ࡀồࡵࡽࢀ࡚࠸ࡿ㸬ࣉ࣮ࣞࢺ⇕஺᥮ჾࡣ༢
఩ᐜ✚ᙜࡓࡾࡢఏ⇕㠃✚ࡀ኱ࡁ࠸ࡇ࡜࠿ࡽ⇕஺᥮ჾࡢࢥࣥࣃࢡࢺ໬㸪ὶయ㛫ࡢᗘᕪࡢ⦰ᑠ࡟ᐤ

୚࡛ࡁࡿࡀ㸪」㞧࡞ὶ㊰ᙧ≧࡛࠶ࡿࡓࡵసືὶయ
ࡀẼᾮ஧┦ὶࡢሙྜ࡟ࡣὶືᵝᘧࡀఏ⇕≉ᛶ࡟

Gear box

Fig.4 Visualized image of oil behavior via image
processing.
3.2 ᐇ㦂⿦⨨࠾ࡼࡧᐇ㦂᪉ἲ ヨ㦂㒊࡟ࡣ SUS 〇ࣈ࣮ࣞࢪࣥࢢࣉ࣮ࣞࢺ⇕஺᥮ჾ㸦᪥㜰〇సᡤ BX ᆺ㸧ࢆ౑⏝ࡋࡓ㸬ࣉࣞࢫຍ

JRR-3㸪⇕୰ᛶᏊࣛࢪ࢜ࢢࣛࣇ࢕⿦⨨㸪⇕ὶయ

2-4
㻝㻠㻠

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JAEA-Review 2013-040ᕤ࡛Ἴᆺࡢพฝࡀᙧᡂࡉࢀࡓ㸦Fig.5㸧ཌࡉ 0.5mm

ࢆ⾜ࡗࡓ㸬㟼Ṇ⏬ィࡢࣉ࣮ࣞࢺࢆ 4 ᯛ✚ᒙࡉࡏ┿✵ࣟ࢘௜ࡅࡍࡿࡇ࡜

ືὶయࡀὶࢀ࡚࠸࡞࠸࡜ࡁࡢ⏬ീ㸪ᾮ༢┦ὶ࡛ࡢ

࡛ 3 ࡘࡢ୪⾜ὶ㊰ࢆᙧᡂࡋࡓ㸬㞄᥋ࡍࡿࣉ࣮ࣞࢺ

⏬ീ࡜ࡢẚ㍑₇⟬࡛࣎࢖ࢻ⋡ศᕸࢆ⟬ฟࡋࡓ㸬ᚓࡢ⁁ࡢࣃࢱ࣮ࣥࡣᕥഴᩳ࡜ྑഴᩳ࡛ᕥྑᑐ⛠࡛ࡽࢀࡓ࣎࢖ࢻ⋡ࡣ 4 ⛊㛫ࡢ᫬㛫ᖹᆒ࡟┦ᙜࡍࡿ㸬࡛ࡣ㟢ග᫬㛫 4 ⛊࡜ࡋ㸪స࠶ࡾ㸪✚ᒙࡉࢀࡓࣉ࣮ࣞࢺ㛫࡟ࡣ⥙┠≧ࡢὶ㊰ࡀᙧᡂࡉࢀࡿ㸬ࣉ࣮ࣞࢺ୍ᯛ࠶ࡓࡾࡢఏ⇕㠃✚ A ࡣ
2

3.3 ᐇ㦂⤖ᯝ

0.0123 m 㸪2 ᯛࡢࣉ࣮ࣞࢺ㛫㸦༢ὶ㊰㸧ࡢᐜ✚ V

 ྍ ど ໬ ⏬ീ ࠿ ࡽ ᚓ ࡓ஧ ḟ ඖ ࣎ ࢖ࢻ ⋡ ศ ᕸ ࢆ

ࡣ 0.02 L ࡛࠶ࡿ㸬ࡇࢀࡼࡾ㸪༢ὶ㊰ࡢᖹᆒỈຊ➼

Fig.6 ࡟♧ࡍ㸬࣎࢖ࢻ⋡ࡀࢢ࣮ࣞࢫࢣ࣮࡛ࣝ♧ࡉࢀ౯┤ᚄࡣ D = 4V/A = 3.36 mm ࡜࡞ࡿ㸬࡚࠸ࡿ㸬⏬ീ୰ኸ࡟ぢ࠼ࡿỈᖹࡢᙳࡣヨ㦂㒊࡛ࡢ୰ᛶᏊࡢᩓ஘ࡢᙳ㡪ࢆ⿵ṇࡍࡿࡓࡵ࡟⏝࠸ࡓ୰yᛶᏊ྾཰య㸦B4C㸧࡛࠶ࡿ㸬Fig.(i)ࡀୖ᪼ὶ㸪Fig.(ii)ࡀୗ㝆ὶࡢ⤖ᯝ࡛࠶ࡾ㸪ࡑࢀࡒࢀධཱྀࢧࣈࢡ࣮ࣝ
ᾮ㸦Fig.(a)㸧
㸪‵ࡾ⵨Ẽ㸦Fig.(b)㸧࡟ᑐࡋ࡚♧ࡉࢀ࡚࠸ࡿ㸬సືὶయࡀࢧࣈࢡ࣮ࣝᾮ࡛ὶධࡍࡿሙྜ㸪ヨ㦂㒊ෆ㒊㸦ᅗ୰‫ڹ‬༳㸧࡛Ἓ㦐ࡀ㛤ጞࡋ㸪࣎࢖ࢻ⋡ࡀୖ᪼ࡋ࡚࠸ࡿᵝᏊࡀ☜ㄆ࡛ࡁࡿ㸬ୗ㝆ὶࡢ࡯࠺ࡀ஧┦ὶ࡟࡞ࡗ࡚࠸ࡿ࡜⪃࠼ࡽࢀࡿ㡿ᇦࡀᗈࡃ㸪ࡇࢀࡀୖ᪼ὶࡼࡾఏ⇕ᛶ⬟ࡀ㧗ࡃ࡞ࡗࡓせᅉ࡜⪃࠼ࡽࢀࡿ㸬୍᪉㸪‵ࡾ⵨Ẽ࡛ὶධࡍࡿሙྜ㸪(unit : mm)xୖ᪼ὶ࡛ࡣ㸪ධཱྀ௜㏆࡛Ẽ┦ࡀ୰ኸ࡟ከࡃศᕸࡋ㸪Fig.5 Tested plate configuration.

ୖ᪼ࡍࡿ࡟ࡘࢀ࡚ᶓ᪉ྥ࡟ศᩓࡍࡿᵝᏊࡀື⏬

 సືὶయࡣ HCFC-141b㸦໬Ꮫᘧ㸸CH3CFCl2㸪ἛⅬ㸸27.9 Υ㸧ࢆ⏝࠸ࡓ㸬ୖ᪼ὶᐇ㦂࡛ࡣᅗ୰ x ࠿ࡽ⣬㠃࡟ᑐࡋ࡚ᆶ┤᪉ྥ࡟㸪ୗ㝆ὶᐇ㦂࡛ࡣᅗ୰y ࠿ࡽసືὶయࡀ౪⤥ࡉࢀࡓ㸬సືὶయࢆ୰ኸࡢ
ὶ㊰࡟㸪ࡑࡢ୧ഃ࡟ࡣࣇࣟࣜࢼ࣮ࢺ FC-3283㸦ἛⅬ㸸128Υ㸧ࢆᑐྥὶ࡜࡞ࡿࡼ࠺࡟౪⤥ࡋ࡚సືὶయࢆຍ⇕㸪Ἓ㦐ࡉࡏࡓ㸬ྛὶ㊰ࡢฟධཱྀ࡟ࡣ⇕㟁ᑐࡀタ⨨ࡉࢀ㸪ࣇࣟࣜࢼ࣮ࢺࡢฟධཱྀ

ᗘᕪ㸪ὶ㔞࠿ࡽ⇕஺᥮㔞ࡀ⟬ฟࡉࢀࡓ㸬ࡲࡓ㸪ࣇࣟࣥഃ࡛ࡣධཱྀᅽຊ㸪ヨ㦂㒊ᕪᅽࡀィ኱㒊㸦⥙≧ࡢὶ㊰࡛࠶ࡾ㸪ಶࠎࡢὶ㊰ࡀᣑ኱ࡉࢀ
ࡿࢃࡅ࡛ࡣ࡞࠸㸧࡛ᾮࡀ୧➃࡟ከࡃὶࢀࡿഴྥࡀ
࠶ࡗࡓ㸬୍᪉㸪ୗ㝆ὶ࡛ࡣ㸪ྠࡌὶື᮲௳࡛࠶ࡗ
࡚ࡶᾮ┦ࡢᙉ࠸೫ὶࡣぢࡽࢀࡎ㸪ὶ㊰඲య࡟୍ᵝ࡟ὶࢀࡿࡇ࡜ࡀ☜ㄆࡉࢀࡓ㸬ᾮ༢┦࡟㏆࠸㒊ศ࡛ࡣ⇕ఏ㐩⋡ࡀపࡃ㸪ୖ᪼ὶࡢ⇕㏻㐣⋡ࢆపୗࡉࡏࡿせᅉ࡟࡞ࡗࡓࡶࡢ࡜⪃࠼ࡽࢀࡿ㸬 Ỉᖹ᩿㠃ᖹᆒ࣎࢖ࢻ⋡ࢆ⟬ฟࡋ㸪ὶࢀ᪉ྥ࡟ࣉ
ࣟࢵࢺࡋࡓ⤖ᯝࢆ Fig.7 ࡟♧ࡍ㸬ᶓ㍈ࡣୖ᪼ὶ㸪ࡉࢀࡓ㸬 ᐇ㦂᮲௳࡜ࡋ࡚㸪సືὶయ㉁㔞ὶ㔞 Gf ࢆ 0.0052
㹼0.026 kg/s ࡢ⠊ᅖ࡛タᐃࡋ㸪ධཱྀ᮲௳ࢆࢧࣈࢡ࣮
ࣝᾮ㸦ධཱྀࢧࣈࢡ࣮ࣝᗘ 'Tsubin = 10 K㸧㸪㣬࿴ᾮ㸦ධཱྀ⇕ຊᏛⓗᖹ⾮ࢡ࢛ࣜࢸ࢕ xin = 0㸧㸪‵ࡾ⵨Ẽ㸦xin = 0.01㸧ࡢ 3 ㏻ࡾ࡜ࡋࡓ㸬 ୰ᛶᏊ⥺ࡣヨ㦂㒊๓㠃࡟↷ᑕࡋ㸪㏱㐣ീࢆ᧜ᙳࡋࡓ㸬ື⏬࡛ࡢ᧜ᙳ࡟ຍ࠼㸪㧗✵㛫ศゎ㸦200
Pm/pixel㸧㸪㧗㍤ᗘศゎ⬟㸦16bit㸧࡛ࡢ㟼Ṇ⏬ィീ࠿ࡽ☜ㄆࡉࢀࡓ㸬ࡑࡢ⤖ᯝ㸪ୖ᪼ὶ࡛ࡣὶ㊰ᣑୗ㝆ὶࡑࢀࡒࢀࡢධཱྀ࠿ࡽࡢ㊥㞳ࢆ⾲ࡍ㸬ᅗ୰㸪࠸ࡎࢀࡢሙྜࡶ࿘ᮇⓗ࡞ኚືࡀぢࡽࢀࡿࡀ㸪ࡇࢀࡣὶ㊰ᙧ≧࡟㉳ᅉࡍࡿࡶࡢ࡛࠶ࡾ㸪ὶ㊰ࡢ⠇ࡸ୧➃ࡢ┣⟶㒊࡟ᾮ┦ࡀ⁫␃ࡋ࡚࠸ࡿࡓࡵ࡛࠶ࡿ㸬࣎࢖ࢻ⋡ࡢධཱྀ࠿ࡽฟཱྀ࡟ྥࡅ࡚ࡢ໙㓄ࡣୗ㝆ὶ࡟ẚ࡭ୖ᪼ὶࡀ኱ࡁ࠸㸬ࡘࡲࡾ㸪ୖ᪼ὶ࡛ࡣධཱྀ
௜㏆࡛ᾮࡢ೫ὶࡀ࠶ࡾ࣎࢖ࢻ⋡ࡀపࡃ㸪ᚎࠎ࡟ຍ㏿ࡉࢀ࣎࢖ࢻ⋡ࡀ㧗ࡃ࡞ࡿࡀ㸪ୗ㝆ὶ࡛ࡣᾮࡀὶ
㊰඲య࡟ὶࢀࡿഴྥࡀ࠶ࡾ㸪ୖ᪼ὶࡼࡾ඲య࡟㧗

JRR-3㸪⇕୰ᛶᏊࣛࢪ࢜ࢢࣛࣇ࢕⿦⨨㸪⇕ὶయ

2-4
㻝㻠㻡

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JAEA-Review 2013-040ࡃ࡞ࡗ࡚࠸ࡓ㸬⇕ఏ㐩ࡀ㧗࠸㧗࣎࢖ࢻ⋡ࡢ⵨Ⓨᇦ㸲㸬᭤ࡾࢆ᭷ࡍࡿྍኚࢥࣥࢲࢡࢱࣥࢫࣄ࣮ࢺࣃ࢖

ࡢ㠃✚ࡀୗ㝆ὶࡢ᪉ࡀᗈࡃ࡞ࡗ࡚࠸ࡿࡇ࡜ࡀ㸪⇕ࣉෆ෭፹ᣲື

㏻㐣⋡ࡢᕪ␗ࡢせᅉࡔ࡜⪃࠼ࡽࢀࡿ㸬

4.1 ◊✲⫼ᬒ ྍኚࢥࣥࢲࢡࢱࣥࢫࣄ࣮ࢺࣃ࢖ࣉ㸦VCHP㸧ࡣ

out

in

୙จ⦰ᛶ࢞ࢫࡢᑒධ࡛⵨Ⓨ

flow

ࡢ

ᗘࢆཷືⓗ࡟ᡤᐃ

ᗘ⠊ᅖෆ࡟⥔ᣢࡍࡿࡇ࡜ࡀྍ⬟࡞෭༷ࢹࣂ

࢖ࢫ࡛࠶ࡿ㸬จ⦰㒊࡟୙จ⦰ᛶ࢞ࢫࢆ⥔ᣢࡍࡿࡓࡵจ⦰㒊ࡣᆶ┤㓄⨨࡜ࡋ㸪⵨Ⓨ㒊ࡼࡾୖ㒊࡟㓄⨨ࡍࡿᚲせࡀ࠶ࡿࡓࡵ㸪෭༷㠃ࡢ㓄⨨࡟ࡼࡗ࡚ࡣ⵨
Ⓨ㒊࡜จ⦰㒊ࡢ㛫࡟᭤ࡀࡾ㒊ࢆタࡅࡿࡇ࡜ࡀ࠶

flowࡿ㸬ࡇࡢሙྜ㸪ᶵჾᛶ⬟ࡀタ⨨ጼໃࡢᙳ㡪ࢆཷࡅࡿ࡜࡜ࡶ࡟᪋ᕤࡢ᪉ἲ࡛ึᮇ୙Ⰻࢆ㉳ࡇࡍࡇ࡜ࡀ⤒㦂ⓗ࡟▱ࡽࢀ࡚࠸ࡿ㸬ࡑࡢᑐ⟇࡜ࡋ࡚㸪࣋ࣥinout(i) Upward(ii) Downward(a) Inlet subcooled liquid ('Tsubin = 10K)
in
flow

out

ࢻ㒊࡟ⷧᯈࢆᤄධࡍࡿࡇ࡜ࡀヨࡉࢀ㸪ຠᯝࢆୖࡆ
࡚࠸ࡿࡀࡑࡢ⌮⏤ࡀゎ᫂ࡉࢀ࡚࠸ࡿࢃࡅ࡛ࡣ࡞࠸㸬 ୰ᛶᏊࣛࢪ࢜ࢢࣛࣇ࢕࡟ࡼࡿ෭፹ὶືࡢྍど໬⤖ᯝࢆࡶ࡜࡟ᛶ⬟పୗࡢせᅉࢆゎ᫂ࡍࡿࡇ࡜
ࢆ┠ⓗ࡜ࡍࡿ㸬
4.2 ᐇ㦂⿦⨨ཬࡧᐇ㦂᪉ἲ ྍど໬ᐇ㦂࡛౑⏝ࡋࡓ VCHP ᙧ≧ࢆ Fig.8 ࡟♧flowࡍ㸬⟶ࡣ㖡〇㸪ෆᚄ 5.4 mm ࡢ⁁௜ࡁ⟶࡛㸪⵨Ⓨ㒊ࢆỈᖹ㸪จ⦰㒊ࢆᆶ┤࡜ࡋ㸪୰㛫᩿⇕㒊࡛ 90°inout(i) Upward(ii) Downward(b) Inlet wet vapor (xin = 0.01)
Fig.6 Two-dimensional void fraction distribution ofboiling flow measured by neutron radiography(Mass flow rate; Gf = 0.026kg/s).

ᛶ࢞ࢫ࡜ࡋ࡚❅⣲࢞ࢫࡀᑒධࡉࢀࡓ㸬⵨Ⓨ㒊࡟ࡣୖ㠃࠿ࡽ࣮࢝ࢺࣜࢵࢪࣄ࣮ࢱࢆ⏝࠸࡚࢔࣑ࣝࢽ࣒࢘〇ࣈࣟࢵࢡࢆ௓ࡋ࡚ຍ⇕ࡉࢀ㸪จ⦰㒊࡟ࡣ࢔࣑ࣝࢽ࣒࢘ࣇ࢕ࣥࡀྲྀࡾ௜ࡅࡽࢀ㸪ᐊ✵Ẽ࡜ࡢ⇕஺᥮࡛෭༷ࡉࢀࡓ㸬⵨Ⓨჾ࡬ࡢᾮࡢ㑏ὶಁ㐍ࡢ

10.8᭤ࡆࡽࢀ࡚࠸ࡿ㸬సືὶయ࡟ࡣỈࢆ⏝࠸㸪୙จ⦰

Mass flow rate; Gf = 0.026kg/s
Inlet quality; xin = 0.01

ࡓࡵ Fig.8 ୰ࡢ఩⨨࡟ᤄධࡉࢀࡓෆᤄᯈࡢ᭷↓㸪タ⨨ጼໃࡢᙳ㡪ࡀホ౯ࡉࢀࡓ㸬⵨Ⓨ㒊ୗ㒊࡜ᒅ᭤
㒊ࡢእቨ

㹝
Ș

0.6

㸪✵Ẽ

ᗘࡀ⇕㟁ᑐ࡛ィࡉࢀࡓ㸬 ⵨Ⓨ㒊ࡀỈᖹ࡜࡞ࡿ≧ែࢆᶆ‽ጼໃ T = 0°࡜

0.4ࡋ㸪ࡇࡢ≧ែ࡛ຍ⇕㔞ࢆ 20 W ࠿ࡽ 33W ࡲ࡛ኚ໬0.2

Upward flow
Downward flow0
0 20 40 60 80 100 120 140 160 180
y[mm]Fig.7 Flow direction distribution of cross-sectional
average void fraction.

ࡉࡏࡓᐇ㦂㸪ጼໃࡢᙳ㡪ࢆぢࡿࡓࡵ⣬㠃࡟ᆶ┤࡞㍈ࢆ୰ᚰ࡟ຍ⇕㔞 20W ࡛ゅᗘࢆ30°㹼30°࡟ጼໃࢆኚ໬ࡉࡏࡓᐇ㦂ࢆ⾜ࡗࡓ㸬ࡲࡓ㸪ᾮࢆ୍ᗘจ⦰
㒊࡟⛣ືࡉࡏࡿࡓࡵ࡟ጼໃࢆಽ❧≧ែ(135°)ࡲ࡛
ኚ໬ࡉࡏ㸪ᾮࢆจ⦰㒊࡬⛣ືࡉࡏࡓᚋ࡟ᶆ‽ጼໃ

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JAEA-Review 2013-040

Table 1 Specification of VCHP.

࡟ᡠࡋࡓሙྜࡢ㉳ື≉ᛶࢆほᐹࡋࡓ㸬ྍど໬ീࡣ
Type
A
B
C
D

EB-CCD ࣓࡛࢝ࣛ 30 fps ࡛᧜ᙳࡋࡓ㸬
Fan

Condensation
section0

Heater

T1

o

T 



T2

Insulator

filling amount of refrigerant
0.39 g / 6.98vol%0.25 g / 4.47vol%0.50 g / 8.94vol%0.98 g / 17.53vol%w/o insert
withinsertT3
Center of rotation

InsertEvaporation section

Fig. 8 Experimental setup.
(a) Type C(a) Type B(T = 0o, Heat input 20 W)

4.3 ᐇ㦂⤖ᯝ

(T = 0o, Heat input 20 W)(a) ᶆ‽ጼໃ࡛ࡢືస ヨ㦂㒊 C ࡢᶆ‽ጼໃ㸦T =0°㸧࡛㸪ຍ⇕㔞ࢆ 20W ୍ᐃ࡜ࡋࡓሙྜࡢຍ⇕㛤ጞ࠿ࡽࡢྛ㒊ᗘኚ໬ࢆ Fig.9 ࡟♧ࡍ㸬ຍ⇕㛤ጞᚋ⵨Ⓨ㒊㸪ᒅ᭤㒊ࡢᗘࡀୖ᪼ࡋ⣙ 150 ⛊ᚋ࡟ࡣᗘࡀ࡯ࡰᐃᖖ࡜࡞ࡗࡓ㸬ᤄධᯈ࡜⵨Ⓨ㒊ୗ㒊ෆቨ(c) Type Cࡢ㛫࡟ᾮࡀಖᣢࡉࢀ࡚࠸ࡿᵝᏊ㸪ᒅ᭤㒊࡛ࡣᾮሢ(T = 30o, Heat input 20 W)ࡀ⵨Ẽὶ࡟ࡼࡗ࡚᣺ືࡋ࡚࠸ࡿᵝᏊࡀᫎീ࠿ࡽ

Fig.10 Refrigerant behavior in steady condition.

ࡣࡗࡁࡾ࡜ほᐹࡉࢀࡓ㸦Fig.10(a)㸧㸬ᐃᖖ≧ែ࡛ᚓࡽࢀࡓᖹᆒᗘࢆヨ㦂㒊ู࡟ Fig.11 ࡟♧ࡍ㸬ࡇࡢ

50

Temperature [Υ]ᅗ࠿ࡽヨ㦂㒊 A㸪C㸪D ࡣ࠸ࡎࢀࡶ⵨Ⓨ㒊࡜ᒅ᭤㒊ࡢᗘᕪࡀ࡞ࡃ㸪ṇᖖ࡟ືసࡋ࡚࠸ࡿࡇ࡜ࡀࢃ

࠿ࡿ㸬ࡋ࠿ࡋ㸪඘ሸ㔞ࡀᑡ࡞࠸ヨ㦂㒊 B ࡟ࡘ࠸࡚ࡣ⵨Ⓨ㒊ࡢ(d) Type D(T =30o, Heat input 20 W)ᗘࡀ㧗ࡃ㸪ࢻࣛ࢖࢔࢘ࢺ࡟⮳ࡗ࡚࠸ࡿࡶࡢ࡜⪃࠼ࡽࢀࡿ㸬ྍど໬⏬ീ㸦Fig.10(b)㸧࠿Heat input 20W
40

30
Evaporation section
Bend section20ࡽ㸪ᾮࡣᤄධᯈ࡜ᒅ᭤㒊ෆഃෆቨࡢ㛫࡟ಖᣢࡉࢀ
࡚࠾ࡾ㸪⵨Ⓨ㒊࡬౪⤥ࡉࢀ࡚࠸࡞࠸ࡇ࡜ࡀ☜ㄆࡉ

A

B

Type

C

D

Fig.11 Average temperature in steady condition.

ࢀࡓ㸬(b) ጼໃኚ໬࡟ࡼࡿືస ጼໃࡢᙳ㡪ࢆࡳࡿࡓ
40
Type C50

Evaporation section

30

40
30
20
10
0

20

Heat input

0100

Bend section

Air

10

200

300

0
400

ࡵ㸪ຍ⇕㔞୍ᐃࡢࡶ࡜ヨ㦂㒊ࢆT=0°࠿ࡽ 30°㸪0°Heat input [W]Temperature [䉝]60࠿ࡽ30°࡟ 5°ࡎࡘኚ໬ࡉࡏࡓ㸬ヨ㦂㒊 C ࡢሙྜ㸪
⵨Ⓨ㒊ࡀᒅ᭤㒊ࡼࡾୖ࡟࡞ࡿ T=30°࡛ࡣ㸪๓㡯㸦 Fig.10(b) 㸧 ࡛ ♧ ࡋ ࡓ ᾮ ሢ ࡀ 㟼 Ṇ ࡋ ࡓ ࡀ
㸦Fig.10(c)㸧㸪T=0°ࡢሙྜ࡜ྠ➼ࡢ⇕㍺㏦ᛶ⬟ࡀᚓTime [sec]ࡽࢀࡓ㸬ࡋ࠿ࡋ㸪඘ሸ㔞ࡀከ࠸ヨ㦂㒊 D ࡛ࡣ㸪⵨

Fig. 9 Change in temperature on start-up.

Ⓨ㒊ࡀᒅ᭤㒊ࡼࡾୗ࡟࡞ࡿ T=30°࡟࠾࠸࡚⵨Ⓨ

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JAEA-Review 2013-040㒊ࡀᾮ࡛‶ࡓࡉࢀ࡚ࡋࡲ࠸㸦Fig.10(d)㸧㸪⵨Ⓨ㒊ቨࡀ 50Υ௨ୖ࡟㐩ࡋࡓ㸬Ἓ㦐㛤ጞ㐣⇕ᗘࡀ㧗ࡃ㸪⇕஺᥮ჾ㸪ྍኚࢥࣥࢲࢡࢱࣥࢫࣄ࣮ࢺࣃ࢖ࣉࢆྍど໬ࡋࡓ㸬ᚓࡽࢀࡓ⤖ᯝࢆ௨ୗ࡟ࡲ࡜ࡵࡿ㸬ຍ⇕㠃࡛Ἓ㦐ࡋ࡞࠿ࡗࡓࡓࡵ࡛࠶ࡿ㸬ࡲࡓ㸪⵨Ⓨ(a) ୰ᛶᏊ࢖࣓࣮ࢪ࢖ࣥࢸࣥࢩࣇ࢓࢖࢔ࡢᑟධ

ࡀᢚ࠼ࡽࢀࡿ࡜㸪⣔ᅽຊࡢపୗ㸪୙จ⦰ᛶ࢞ࢫࡢ

࡟ࡼࡾ㸪ᅇ㌿ࡍࡿ࢚ࣥࢪࣥෆࡢ࢜࢖ࣝᣲືࢆ㩭᫂⭾ᙇ࡟ࡘ࡞ࡀࡾ㸪จ⦰㒊ᛶ⬟ࢆపୗࡉࡏ࡚ࡋࡲ࠺㸬࡟ྍど໬ࡍࡿࡇ࡜ࡀ࡛ࡁࡓ㸬

⵨Ⓨ㒊࡟ࡓࡲࡗࡓᾮ㠃࡛ࡢ⵨Ⓨ࡛⇕㍺㏦㔞ࡀࣂ(b) ࣉ࣮ࣞࢺ⇕஺᥮ჾෆ෭፹ᣲືࡢྍど໬⤖ᯝࣛࣥࢫࡍࡿ࡜㸪ຍ⇕㠃࡛ࡢἛ㦐ࡣᮇᚅ࡛ࡁࡎቨ

࠿ࡽ㸪Ἓ㦐⇕ఏ㐩ᛶ⬟࡬ࡢὶື᪉ྥ㸦ᆶ┤ୖ᪼㸭పୗࡣぢ㎸ࡵ࡞࠸㸬ᤄධᯈࡀ࡞࠸ヨ㦂㒊 A ࡛ࡶ඲ୗ㝆㸧ࡢᙳ㡪ࡀᏑᅾࡍࡿせᅉࡀ᫂ࡽ࠿࡜ࡉࢀࡓ㸬࡚ࡢጼໃ࡛ṇᖖືసࡀ☜ㄆࡉࢀࡓ㸬ᆶ┤ୖ᪼ὶࡢ᪉ࡀ㸪ᛶ⬟ࡀ㧗࠸࡜࠸࠺㏻ᖖࡢ෇⟶ෆὶࢀࡢ⪃࠼ࡀ㸪ࣉ࣮ࣞࢺ⇕஺᥮ჾ࡟ࡣ㏻⏝ࡋ࡞(c) ຍ⇕㔞ࡢᙳ㡪 ᶆ‽ጼໃ㸦T = 0°㸧࡛ຍ⇕㔞࠸ࡇ࡜♧ࡍࡶࡢ࡛࠶ࡾ㸪ព⩏ࡣ኱ࡁ࠸㸬ࢆ 20W ࠿ࡽ 33W ࡲ࡛ẁ㝵ⓗ࡟ቑ኱ࡉࡏࡿᐇ㦂ࢆ(c) ྍኚࢥࣥࢲࢡࢱࣥࢫࣄ࣮ࢺࣃ࢖ࣉෆ෭፹ᣲ

⾜ࡗࡓࡀ㸪ヨ㦂㒊 A, C, D ࠸ࡎࢀࡢሙྜࡶ㸪⵨Ⓨືࡢྍど໬⤖ᯝ࠿ࡽ㸪ࣄ࣮ࢺࣃ࢖ࣉືస୙ලྜࡢ㒊せᅉࡀ᫂ࡽ࠿࡜ࡉࢀࡓ㸬ࡲࡓ㸪୙ලྜࡢᨵၿ⟇࡜ᗘࡣ࡯࡜ࢇ࡝ኚ໬ࡏࡎṇᖖ࡟ືసࡍࡿࡇ࡜

ࡀ☜ㄆࡉࢀࡓ㸬ࡋ࡚ࣄ࣮ࢺࣃ࢖ࣉෆ࡟ᤄධࡉࢀࡓෆᤄᯈࡀタィ⪅ࡢពᅗ㏻ࡾࡢຠᯝࢆⓎ᥹ࡋ࡚࠸ࡿࡇ࡜ࡀ☜ㄆ(d) ᾮࡢึᮇ఩⨨ࡢᙳ㡪 ᾮࡢึᮇ఩⨨ࡢᙳ㡪ࡉࢀࡓ㸬ࢆㄪ࡭ࡿࡓࡵ⿦⨨඲యࢆ 130rᅇ㌿ࡉࡏ㸪ᾮࢆจ ௒ᚋࠊྠᵝࡢᶵჾ࡛ࡢ◊✲ࢆ⥅⥆ࡍࡿ࡜࡜ࡶ࡟ࠊ

⦰㒊࡬㏦ࡾ㸪ࡑࡢᚋ㸪ᶆ‽ጼໃ࡟ᡠࡋຍ⇕㸦20W㸧

᪂ࡓ࡞ᶵჾ࡬ࡢ㐺⏝ࢆ᳨ウࡋ࡚࠸ࡿ. ྍど໬ィࢆ㛤ጞࡋࡓ㸬ᤄධᯈࡢ࡞࠸ヨ㦂㒊 A ࡛ࡣᒅ᭤㒊࡟࡛ᚓࡽࢀࡓᡂᯝࢆ㸪ᶵჾෆ஧┦ὶࡢࣔࢹࣜࣥࢢ

ᾮࣉࣛࢢࡀᙧᡂࡉࢀࡓࡓࡵ㸦Fig.12(a)㸧㸪⵨Ⓨ㒊࡬ࡢᾮࡢ㑏ὶࡀ୙༑ศ࡜࡞ࡾ⵨Ⓨ㒊ࡢ㸦ὶືᵝᘧࡸ࣎࢖ࢻ⋡≉ᛶ㸧࡟཯ᫎࡉࡏࡿ㸬ᗘୖ᪼ࢆᣍ࠸ࡓ㸬୍᪉㸪ᤄධᯈࡀ࠶ࡿヨ㦂㒊 C㸪D ࡛ࡣᾮ㸴㸬ㅰ㎡ࣉࣛࢢࡀᤄධᯈ࡛ᔂቯࡋ㸪ᾮࡀᤄධᯈࢆఏࡗ࡚⵨ ᐇ㦂⏝ࣉ࣮ࣞࢺ⇕஺᥮ჾࡣ᪥㜰〇సᡤࡼࡾ㸪ྍⓎ㒊࡬㑏ὶࡋࡓࡓࡵ㸦Fig.12(b)࡟ヨ㦂㒊 C ࡛ࡢྍኚࢥࣥࢲࢡࢱࣥࢫࣄ࣮ࢺࣃ࢖ࣉࡣ୕⳻㟁ᶵࡼࡾど໬⤖ᯝࢆ♧ࡍ㸧ṇᖖືసࡀᚓࡽࢀࡓ㸬ᥦ౪ࡉࢀࡓࡇ࡜ࢆグࡋ㸪ࡇࡇ࡟ឤㅰࡍࡿ㸬㸵㸬ᡂᯝࡢබ⾲ ᖹᡂ 19 ᖺᗘ࠿ࡽ 21 ᖺᗘࡢ◊✲࡛ᚓࡽࢀࡓᡂᯝࢆ
ࡶ࡜࡟㸪Ꮫ⾡㞧ㄅࠊᅜ㝿఍㆟࡛බ⾲ࡉࢀࡓㄽᩥࢆ௨ୗ࡟♧ࡍ㸬(a) Type A(b) Type C

Fig.12 Refrigerant behavior after return from inverted
position. (T = 0°, Heat input 20 W)
㸳㸬ࡲ࡜ࡵ࡜௒ᚋࡢ᪉㔪 ᐇ⏝ᶵჾෆὶయᣲືࡢྍど໬࣭ィ࡜ࡑࢀ࡟ᇶ࡙ࡃὶయᣲືࡢᶵჾᛶ⬟࡬ࡢᙳ㡪ホ౯ࢆ┠ⓗ࡜ࡋ㸪ᑠᆺ 4 ࢧ࢖ࢡࣝ࢞ࢯ࢚ࣜࣥࣥࢪࣥ㸪ࣉ࣮ࣞࢺ

H. Asano, T. Nakajima, N. Takenaka, “Visualization andMeasurement of Hygroscopic Water Distribution in a
Unit Cell of Silica-Gel Adsorber by NeutronRadiography”, Journal of Chemical Engneering of Japan,
40(13), pp.1292-1297, (2007).
N. Takenaka, K. Sugimoto, H. Kawami, T. Yoshida,“Visualization of Two-Phase Flow Phenomena in a
Self-Vibration Heat Pipe by Neutron Radiography”, Proc.
of the 18th International Symposium on Transport
Phenomena, (2007).

JRR-3㸪⇕୰ᛶᏊࣛࢪ࢜ࢢࣛࣇ࢕⿦⨨㸪⇕ὶయ

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JAEA-Review 2013-040ὸ㔝➼㸪➉୰ಙᖾ㸪͆ᐇ⏝ࣉ࣮ࣞࢺ⇕஺᥮ჾෆ✵ẼỈ஧┦ὶࡢὶື≉ᛶ࡟㛵ࡍࡿ◊✲ -༢ὶ㊰ෆὶື≉ᛶ࡜ከὶ㊰ศᒱ-͇㸪᪥ᮏ෭෾✵ㄪᏛ఍ㄽᩥ㞟㸪24(4)㸪
pp.87-98㸪(2007).
N. Takenaka, H. Asano, “Applications of NeutronRadiography to Two-Phase Flow in Industrial Machines”,
Multiphase Science and Technology, 19(3), pp.287-303,(2007).
T. Yoshida, H. Kawami, K. Sugimoto, N. Takenaka, Y.
Saito, M. Matsubayashi, “Visualization of a
Self-Vibration Heat Pipe by Neutron Radiography”,
Neutron Radiography (8), pp.509-516, (2008).
T. Baba, S. Harada, H. Asano, K. Sugimoto, N. Takenaka,
K. Mochiki, "Nondestructive Inspection for Boiling Flowin Plate Heat Exchanger by Neutron Radiography",
Nuclear Instruments and Methods in Physics Research-A,
605, pp.142-145, (2009).
K. Sugimoto, Y. Kamata, T. Yoshida, H. Asano, H.
Murakawa, N. Takenaka, K. Mochiki, "FlowVisualization of Refrigerant in a Self-Vibration Heat Pipeby Neutron Radiography", Nuclear Instruments andMethods in Physics Research-A, 605, pp.200-203,(2009).
M. Nakamura, K. Sugimoto, H. Asano, H. Murakawa, N.
Takenaka, K. Mochiki, "Visualization of Oil Behavior ina Small 4-cycle Engine by Electrical Motoring by
Neutron Radiography", Nuclear Instruments andMethods in Physics Research-A, 605, pp.204-207,(2009).
K. Sugimoto, H. Murakawa, Y. Kamata, T. Yoshida, H.
Asano, N. Takenaka, and K. Mochiki, “Flowvisualization of refrigerant behaviors in a self-vibration
heat pipe”, Proc. of 7th Int. Conf. on Multiphase Flow,
Tampa, USA., #3.3.4, (2010).

ᮡᮏ຾⨾㸪ᮧᕝⱥᶞ㸪ྜྷ⏣ኊᑑ㸪㙊⏣ὒᖹ㸪ὸ㔝➼㸪➉୰ಙᖾ㸪ᣢᮌᖾ୍㸪͆⮬ບ᣺ືᆺࣄ࣮ࢺࣃ
࢖ࣉෆࡢ⇕ὶື⌧㇟࡟㛵ࡍࡿ◊✲㸦୰ᛶᏊࣛࢪ࢜
ࢢࣛࣇ࢕࡟ࡼࡿ෭፹ᣲືࡢྍど໬㸧͇㸪᪥ᮏᶵᲔᏛ
఍ㄽᩥ㞟 (B ⦅)㸪76(766)㸪pp.975-982(2010).
K. Sugimoto, H. Asano, H. Murakawa, N. Takenaka, T.
Nagayasu and S. Ipposhi, “Evaluation of Thin Plate
Insert Effect in a Variable Conductance Heat Pipe by
Neutron Radiography”, 9th World Conference on
Neutron Radiography, Kwa-Maritane, South Africa,(2010).

JRR-3㸪⇕୰ᛶᏊࣛࢪ࢜ࢢࣛࣇ࢕⿦⨨㸪⇕ὶయ

2-4
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JAEA-Review 2013-040

2-5୰ᛶᏊ࢖࣓࣮ࢪ࣭࢖ࣥࢸࣥࢩࣇ࢓࢖࢔ࡢࡓࡵࡢ㧗ᛶ⬟᧜ീࢩࢫࢸ࣒ࡢ㛤Ⓨ
Development of High Performance Imaging System for Neutron Image Intensifierᣢᮌᖾ୍ࠊ࿴⏣Ὀ᫂ࠊᒸᓮ㐨ᙪࠊ኱ሯ⿱௓
K. Mochiki, Y. Wada, M. Okazaki and Y. Otsukaᮾி㒔ᕷ኱Ꮫ Tokyo City University㸬ࡣࡌࡵ࡟
ᖹᡂ 16 ᖺᗘ࠿ࡽ 17 ᖺᗘ࡟࠿ࡅ࡚ 2 ᖺ㛫࡛⾜ࡗࡓ୰ᛶᏊ࢖࣓࣮ࢪ࣭࢖ࣥࢸࣥࢩࣇ࢓࢖࢔㸦㹇㹇㸧ࡢᛶ⬟ヨ㦂ࡣᴟࡵ࡚Ⰻዲ࡞⤖ᯝࡀᚓࡽࢀࡓࠋࡇࡢ
ᡂᯝࢆࡩࡲ࠼ࠊᖹᡂ 18 ᖺᗘ࡜ 19 ᖺᗘࡢ 2 ᖺ㛫࡟ࢃࡓࡗ࡚㹒㹌㹐㹄㸰࡟࠾ࡅࡿື⏬᧜ീ⏝ࡢ᧜ീ⣔ࡢᩚഛࢆ⾜࠸ࠊ㧗㏿㹁㹒ࠊࡦ࠸࡚ࡣࢲ࢖ࢼ࣑ࢵࢡ
㹁㹒⏝ࡢ᧜ീࢩࢫࢸ࣒ࡢ㛤Ⓨࢆ⾜ࡗࡓࠋࡑࡋ࡚ࠊ
ᘬࡁ⥆ࡁᖹᡂ 20 ᖺᗘ࡜ 21 ᖺᗘࡢ 2 ᖺ㛫࡛ࠊࡉࡽ࡟㧗ᛶ⬟໬ࢆ┠ᣦࡋ࡚✀ࠎࡢ㛤Ⓨࢆ⾜ࡗࡓࡢ࡛ሗ
࿌ࡍࡿࠋ㸬୰ᛶᏊ㹇㹇ࢆ⏝࠸ࡓ୰ᛶᏊࢲ࢖ࢼ࣑ࢵࢡ㹁㹒ᐇ㦂࡛౑⏝ࡋࡓࢲ࢖ࢼ࣑ࢵࢡ CT ࢩࢫࢸ࣒ࢆᅗ
1 ࡟♧ࡍࠋ⿕᳨యࢆ㏻㐣ࡋࡓ୰ᛶᏊ⥺ࡣ୰ᛶᏊ I.I.
࡛ྍどග࡟ኚ᥮ࡉࢀ࣓࡛࢝ࣛ᧜ᙳࡉࢀࡿࠋCT ࡛
ࡣ 180 ᗘศࡢ㏱㐣ീࡀᚲせ࡜࡞ࡿࡓࡵࠊࢱ࣮ࣥࢸ
࣮ࣈ࡛ࣝ⿕᳨యࢆ 180 ᗘᅇ㌿ࡉࡏࡿࠋ୰ᛶᏊ I.I.
ࡣ㧗࠸୰ᛶᏊ᳨ฟຠ⋡ࢆᣢࡕࠊど㔝ࡣ 9,6,4.5 ࢖ࣥࢳᚄ࡛ྍኚ࡛࠶ࡿࠋᅗ 2 ࡟୰ᛶᏊ I.I.ࡢእほࢆ♧ࡍࠋᅗ 2:୰ᛶᏊ I.I.ࡢእほ ⇞ᩱ㟁ụࡢࢲ࢖ࢼ࣑ࢵࢡ CT ࡛ࡣ⤖㟢ỈࡢⓎ⏕᮲௳ࡸᣲືࢆ▷࠸㛫㝸࡛㐃⥆ⓗ࡟ほᐹࡍࡿᚲせࡀ࠶ࡿࡓࡵࠊ1 ⛊࡛ࢱ࣮ࣥࢸ࣮ࣈࣝࢆ༙ᅇ㌿ࡉࡏࠊ࡞࠾࠿ࡘ 180 ᯛ௨ୖࡢ㏱㐣ീࢆ᧜ᙳࡍࡿᚲせࡀ࠶ࡿࠋࡑࡇ࡛ࠊ㧗㏿᧜ᙳ࣓࢝ࣛ࡟ࡣ Basler A-504K
CMOS ࣓࢝ࣛࢆ⏝࠸ࡓࠋࡇࡢ࣓࢝ࣛࡣ 8bit

1280x1024 ࣆࢡࢭࣝࡢゎീᗘࢆᣢࡕࠊ᭱኱ 500fps
࡛ࡢ᧜ᙳࡀྍ⬟࡛࠶ࡿࠋࡉࡽ࡟ࠊࡇࡢ࣓࢝ࣛ࠿ࡽ
㌿㏦ࡉࢀࡿࢹ࣮ࢱ㔞ࡣ 200fps ࡛⣙ 240MBࠊ
500fps ࡛⣙ 625MB ࡟ࡶ࡞ࡿࡓࡵࠊ㧗ᛶ⬟ PC ࡛ࡣࢹ࣮ࢱྲྀᚓ࣮࣎ࢻ࡜ࡋ࡚ National
Instruments ♫ࡢ NI PCI-1429 ࢆ⏝࠸ࡓࠋࡇࡢ࣎
࣮ࢻࡣ᭱኱࡛ 680MB ࡢࢹ࣮ࢱࢆྲྀᚓྍ⬟࡛࠶ࡾࠊ࣓࢝ࣛ࠿ࡽࡢࢹ࣮ࢱ㌿㏦㔞ࢆ‶ࡓࡍࡶࡢ࡜࡞ࡗ࡚
180䉝ศ䛾㏱㐣ീLnኚ᥮䝯䝕䜱䜰䞁䝣䜱䝹䝍
Shepp-Logan䝣䜱䝹䝍ᬯ㟁ὶ䚸䝅䜵䞊䝕䜱䞁䜾
⿵ṇ

㏫ᢞᙳฎ⌮

᩿ᒙീ

ᅗ 3:CT ฎ⌮࠸ࡿࠋ CT ฎ⌮ࡢὶࢀࢆᅗ 3 ࡟♧ࡍࠋCT ฎ⌮ࡣࣀ࢖ࢬ㝖ཤ࡞࡝ࢆ⾜࠺๓ฎ⌮࡜ࠊ᩿ᒙീࢆᚓࡿࡓࡵࡢ෌
ᵓᡂฎ⌮ࡀ࠶ࡿࠋ࣓ࢹ࢕࢔ࣥࣇ࢕ࣝࢱࡣࣀ࢖ࢬࢆ
㝖ཤࡍࡿࡓࡵࡢ୍⯡ⓗ࡞ࢹࢪࢱࣝࣇ࢕ࣝࢱ࡛࠶ࡿࠋ
⿕᳨య࡟୰ᛶᏊࢆ࠶࡚࡞࠸࡛᧜ᙳࢆ⾜࡞ࡗࡓ㝿ࠊ࢖࣓࣮ࢪࢭࣥࢧᅛ᭷ࡢᬯ㟁ὶࣀ࢖ࢬࣃࢱ࣮ࣥࡀᚓ
ࡽࢀࡿࠋࡇࢀࡣ㟢ග᫬㛫࡟౫Ꮡࡍࡿࡓࡵࠊ㏱㐣ീࢆྲྀᚓࡍࡿ㝿࡜ྠࡌ㟢ග᫬㛫࡛ᬯ㟁ὶࣀ࢖ࢬࣃࢱ
࣮ࣥࢆ᧜ᙳࡋࠊ㏱㐣ീ࡜ࡢᕪศ⿵ṇฎ⌮ࢆ⾜࠺ࠋ⿕᳨యࢆ⨨࠿ࡎ࡟୰ᛶᏊࢆ↷ᑕࡋ࡚᧜ᙳࢆ⾜ࡗࡓ㝿࡟ᚓࡽࢀࡿ⏬ീ࡟ࡣ୰ᛶᏊ I.I.࡟ࡼࡿឤᗘ࣒ࣛࡀぢࡽࢀࡿࡓࡵࠊࡇࢀࢆ⿵ṇࡍࡿࡓࡵ࡟⾜࠺ࡢࡀࢩ࢙࣮ࢹ࢕ࣥࢢ⿵ṇ࡛࠶ࡿࠋ๓ฎ⌮ᚋࡢ ln ኚ᥮࡛ࡣධᑕᨺᑕ⥺ᙉᗘ/㏱㐣ᨺᑕ⥺ᙉᗘࡢᑐᩘࢆ࡜ࡿ
ࡇ࡜࡛ᢞᙳࢹ࣮ࢱࢆᚓࡿࠋᚓࡽࢀࡓᢞᙳࢹ࣮ࢱ࡟
ᑐ ࡋ CT ฎ ⌮ ࡟ ≉ ໬ ࡋ ࡓ ࣇ ࢕ ࣝ ࢱ ࡛ ࠶ ࡿ
Shepp-Logan ࣇ࢕ࣝࢱ⿵ṇࢆ⾜࠸ࠊ෌ᵓᡂ⏬ീ࡟࠾ࡅࡿ࣎ࢣࡢపῶ࡜࢚ࢵࢪࡢᙉㄪࢆ⾜࠺ࠋࣇ࢕ࣝ

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JAEA-Review 2013-040

ࢱ⿵ṇࢆ⾜ࡗࡓࢹ࣮ࢱ࡜㏫ᢞᙳࡢ㝿ࡢ⿵㛫ಀᩘࢆ᥃ࡅྜࢃࡏࠊࡑࢀࢆ 180Υศ⾜ࡗ࡚᩿ᒙീࢆᚓࡿ
ฎ⌮ࡀ㏫ᢞᙳฎ⌮࡛࠶ࡿࠋࡇࡢ୍㐃ࡢฎ⌮ࢆ⿕᳨యࡢୖ࠿ࡽୗࡲ࡛⾜࠸✚ࡳ㔜ࡡࡿࡇ࡜࡛ 3 ḟඖീࢆᚓࡿࡇ࡜ࡀฟ᮶ࡿࠋ 㧗㏿᧜ᙳ࣓࢝ࣛࢆ⏝࠸ࡿࡇ࡜࡛ࢲ࢖ࢼ࣑ࢵࢡ CT ࢆ⾜࠺ࡀࠊ࣓࢝ࣛࡢࣇ࣮࣒࣮ࣞࣞࢺࡀ࠶ࡀࡿ࡟
ࡘࢀ㏱㐣ീ 1 ᯛ࠶ࡓࡾࡢ୰ᛶᏊ㔞ࡀᑡ࡞ࡃ࡞ࡾࠊ
෌ᵓᡂࡋࡓ 3 ḟඖീࡢ⏬㉁ࡶᝏࡃ࡞ࡿࠋ࣓࢝ࣛࡢ
ࣇ࣮࣒࣮ࣞࣞࢺࢆ 200fps ࡜ࡋࡓ㝿ࡢỈᣲືࡢホ౯ᐇ㦂ࢆ⾜ࡗࡓࠋ⾲ 1 ࡟ 2 ✀㢮ࡢ㧗㏿ CMOS ࣓࢝ࣛࢆ⏝࠸ࡓ㝿ࡢᐇ㦂᮲௳ࢆ♧ࡍࠋ30 ୓⏬⣲ࡢ C
MOS ࣓࡛࢝ࣛ⇞ᩱ㟁ụࢆ᧜ᙳࡋࡓᐇ㦂࡛ࡣࠊᑡࡋࡎࡘỈࢆධࢀ࡞ࡀࡽ㏱㐣ീ 400 ᯛࢆ㸯ࢭࢵࢺ࡜ࡋ࡚㐃⥆࡛ 16 ࢭࢵࢺྲྀᚓࡋࡓࠋࡲࡓࠊ✵ࡢ≧ែࡢ⇞ᩱ㟁ụࡢ㏱㐣ീࡶ 1 ࢭࢵࢺྲྀᚓࡋ࡚࠾ࡁࠊỈࡢධࡗࡓࢹ࣮ࢱ࡜ࡢᕪศࢆ࡜ࡿࡇ࡜࡛Ỉࡢࡳࡢ㏱
㐣ീࢆసᡂࡍࡿࠋ16 ࢭࢵࢺࡍ࡭࡚࡟࠾࠸࡚ᕪศࡢ
㏱㐣ീࢆసᡂࡋ࡚ CT ෌ᵓᡂฎ⌮ࢆ⾜࠸ 3 ḟඖീࢆᙧᡂࡋࡓࠋࡑࡢ࠺ࡕ 3 ࢭࢵࢺࢆ 3 ḟඖ⾲♧ࡋࡓࡶࡢࢆᅗ 5 ࡟♧ࡍࠋ3 ḟඖീసᡂ࡟ࡣ VGStudio
MAX1.3 ࢆ౑⏝ࡋࡓࠋᅗ 4 ࠿ࡽࡶ☜ㄆ࡛ࡁࡿ࡜࠾
ࡾࠊỈ㒊ศࡢኚ໬ࡀほᐹ࡛ࡁ࡚࠸ࡿࡇ࡜ࡀ☜ㄆ࡛ࡁࡿࠋࡋ࠿ࡋࠊࡇࡢᐇ㦂᮲௳࡛ࡣゎീᗘࠊ᧜ᙳ᫬
㛫࡞࡝ồࡵࡽࢀࡿࢲ࢖ࢼ࣑ࢵࢡ CT ࡢせồࢆ‶ࡓࡋ࡚࠸࡞࠸ࠋ
 130 ୓⏬⣲ࡢ CMOS ࣓࡛࢝ࣛ◁᫬ィࢆ᧜ᙳࡋࡓᐇ㦂࡛ࡣࠊ᧜ᙳ᫬㛫ࡀ 1 ⛊ࡢࡓࡵࢲ࢖ࢼ࣑ࢵࢡ
CT ᮏ᮶ࡢ᮲௳࡟㏆࠸ࡶࡢ࡜࡞ࡗ࡚࠸ࡿࠋࡇࡢ᮲
௳࡛㏱㐣ീࢹ࣮ࢱࢆ 200 ᯛ 1 ࢭࢵࢺ࡜ࡋ࡚ 30 ࢭࢵࢺྲྀᚓࡋ࡚ෆ㒊ࡢ◁ࡢ㔞ࡀኚ໬ࡋ࡚࠸ࡃᵝᏊࡀ☜ㄆ࡛ࡁࡿ࠿ࢆ᳨ドࡋࡓࠋA-504K ࡣࢩࣕࢵࢱ࣮
ࢫࣆ࣮ࢻࢆୖࡆࡿ࡜ᶓ⦤≧ࡢࣀ࢖ࢬࡀ┠❧ࡘࡼ࠺࡟࡞ࡗࡓࠋࡇࢀࡣ㏱㐣ീ 1 ᯛ࠶ࡓࡾࡢග㔞ࡀῶࡗࡓࡓࡵࠊ࣓࢝ࣛ≉ᛶ࡟ࡼࡿࣀ࢖ࢬࡀ┦ᑐⓗ࡟ቑຍࡋࡓࡓࡵ࡜⪃࠼ࡽࢀࡿࠋࡇࡢࣀ࢖ࢬ࡟ᑐࡋ᪂ࡓ࡞
ࣇ࢕ࣝࢱ࣮ࢆ᪋ࡋ࡚◁᫬ィࡢ 3 ḟඖീᙧᡂࡋࡓࠋ
ᅗ 5 ࡟ࡑࡢ 3 ḟඖീ࡟࠾ࡅࡿ◁ࡢ㔞ࡢኚ໬ࢆ♧ࡍࠋ㸱㸬❧య㏱どࢩࢫࢸ࣒ࡢ
 ࣛࢪ࢜ࢢࣛࣇ࢕࡛ᚓࡽࢀࡿ㏱㐣ീࡣ㸰ḟඖ⏬ീ࡟࡞ࡾࠊ≀యෆ㒊ࢆᵓᡂࡍࡿせ⣲ࡢ┦ᑐⓗ࡞๓ᚋ㛵ಀࢆ♧ࡍዟ⾜ࡁ᪉ྥࡢ᝟ሗࡣᾘኻࡋ࡚ࡋࡲ࠺ࠋ
ዟ⾜ࡁ᪉ྥࡢ᝟ሗࡀᚲせ࡞ሙྜ࡟ࡣ CT ᧜ീἲࡀ࠶ࡿࡀࠊከࡃࡢ㏱㐣ീࢆྲྀᚓࡋࠊ኱㔞ࡢィ⟬ࢆ⾜࠺ᚲせࡀ࠶ࡿࠋࡑࡇ࡛ࠊ▷᫬㛫࡟ᚲせ࡞㏱㐣ീࢆྲྀᚓࡋࠊ୪ิ࡟෌ᵓᡂฎ⌮ࢆᐇ᪋ࡍࡿᐇ᫬㛫ࢲ࢖ࢼ࣑ࢵࢡ CT ࢩࢫࢸ࣒ࢆ㛤Ⓨ୰࡛࠶ࡿࠋ
ே㛫ࡀ❧యឤࢆឤࡌࡿ⏕⌮ⓗせᅉ࡟ࠊ୧║どᕪࠊ㍽㍵ࠊ↔Ⅼㄪ⠇ࠊ㐠ືどᕪ➼ࡀ࠶ࡿࠋࡇࢀࡽࡢせᅉࡢ࠺ࡕዟ⾜ࡁࢆㄆ㆑ࡍࡿ᭱ࡶ㔜せ࡞せᅉ࡜࡞ࡗ࡚࠸ࡿࡢࡀ୧║どᕪ࡛࠶ࡿࠋᅗ㸴࡟♧ࡍࡼ࠺࡟ࠊ
ே㛫ࡣᕥྑࡢ║࡛␗࡞ࡗࡓ఩⨨࠿ࡽᑐ㇟≀ࢆほࡍࡿࡓࡵࠊࡑࡢぢ࠼᪉࡟ࡣᚤጁ࡞ゅᗘᕪࡀ⏕ࡌ࡚࠸ࡿࠋࡇࡢゅᗘᕪࢆどᕪ࡜࿧ࡧࠊࡇࡢどᕪࡢ␗࡞ࡗࡓ⏬ീࢆ⬻ෆ࡛⼥ྜࡍࡿᶵ⬟࡟ࡼࡗ࡚≀యࢆ❧య࡜ࡋ࡚ㄆ㆑ࡋ࡚࠸ࡿࠋࡇࡢㄆ㆑ᶵ⬟ࢆ⏝࠸࡚❧
య㏱どࢆ⾜࠺ࠋ ⿦⨨ࡣ᪥ᮏཎᏊຊ◊✲㛤Ⓨᶵᵓࡢ◊✲⏝ཎᏊ⅔
㹈㹐㹐㸫㸱㹋࡟࠾࠸࡚ࠊ୰ᛶᏊ࢖࣓࣮ࢪ࢖ࣥࢸࣥ
ࢩࣇ࢓࢖࢔㸦I.I.㸧ࢆ⏝࠸ࡿࡇ࡜ࢆ᝿ᐃࡋ࡚࠸ࡿࠋ
㹖⥺ࢆ⏝࠸ࡓ❧యど࡛ࡣࠊ⥺※࡜࣓࢝ࣛࢆ 2 ᑐ౑⏝ࡍࡿ౛ࡀ࠶ࡿࡀࠊཎᏊ⅔࡜㧗౯࡞୰ᛶᏊ I.I.ࢆ
౑⏝ࡍࡿሙྜࡣ 1 ᑐ࡛⾜࠺ᚲせࡀ࠶ࡿࠋࡑࡇ࡛ࠊ
ᅗ㸵࡟♧ࡍࡼ࠺࡟ࠊ⿕᳨యࢆᅇ㌿ࡉࡏࡿࡇ࡜࡛どᕪࡢ␗࡞ࡿ⏬ീࢆྲྀᚓࡍࡿࢩࢫࢸ࣒ࢆ⪃᱌ࡋࡓࠋࡇࡢࢩࢫࢸ࣒࡛ࡣࠊどᕪࡢ␗࡞ࡿ㸰ࡘࡢᫎീಙྕ
ࢆᚓࡿࡓࡵ࡟ࠊ⏬ീฎ⌮⿦⨨ࢆ〇సࡋࠊ⌧ᅾࡢ࣓࢝ࣛ࠿ࡽࡢฟຊ⏬ീ࡜⏬ീฎ⌮࡟ࡼࡾ㐜ᘏࡋ࡚ࡁࡓᅇ㌿ゅࡢ␗࡞ࡿ㏱㐣⏬ീࢆྑ┠⏝࡜ᕥ┠⏝࡜ࡋ࡚సᡂࡋࡓࠋࡇࢀࡽࡢ㸰ࡘࡢࣅࢹ࢜ಙྕࡣࠊࡦ࡜
ࡘࡢࢩࣝࣂ࣮ࢫࢡ࣮ࣜࣥୖ࡟ 2 ྎࡢࣉࣟࢪ࢙ࢡࢱ
ࢆ⏝࠸࡚ᢞᑕࡉࢀࡿࠋ2 ྎࡢࣉࣟࢪ࢙ࢡࢱ࡟ࡣࠊ
஫࠸࡟㏱㐣㍈ࡀᆶ┤࡜࡞ࡗ࡚࠸ࡿ೫ගᯈࢆタ⨨ࡋࠊࡑࡋ࡚ࢫࢡ࣮ࣜࣥୖ࡟ᢞᑕࡉࢀࡓᫎീࢆ೫ග࣓࢞ࢿ࡛ぢࡿࡇ࡜࡟ࡼࡾ❧య㏱どࢆ⾜࠺ࠋ࡞࠾ࠊᅇ㌿ࢸ࣮ࣈࣝࡣ PC ࡛㏿ᗘࢆไᚚࡍࡿࡇ࡜ࡀ࡛ࡁࠊࡲ
ࡓ㏿ᗘ࡟ᛂࡌ࡚᭱㐺࡞どᕪࢆᣢࡗࡓ⏬ീࢆ㑅ᢥࡍࡿࡇ࡜ࡀฟ᮶ࡿࠋ
㸲. ࡲ࡜ࡵ ࢲ࢖ࢼ࣑ࢵࢡ㹁㹒ࡣ⇞ᩱ㟁ụෆࡢỈࡢྍど໬ᐇ㦂࡟౑⏝࡛ࡁࡿࡶࡢࡀ㛤Ⓨ࡛ࡁࡓࠋࡲࡓࠊ❧య㏱
ど࡛ࡶࠊືࡁࡢ࠶ࡿ⌧㇟ࡢ❧యどࡀྍ⬟࡛࠶ࡿࡇ࡜ࡀࠊᐇド࡛ࡁ࡚࠸ࡿࠋࡉࡽ࡟ࠊᐇ⏝໬ࢆ┠ᣦࡋࠊ◊✲ࢆ㐍ࡵ࡚⾜ࡃணᐃ࡛࠶ࡿࠋ


ཧ⪃ᩥ⊩
1) ᣢᮌᖾ୍ࠊ᪥ሪග୍ ࠕ୰ᛶᏊ࣮࢝ࣛ࢖࣓࣮ࢪ
࢖ࣥࢸࣥࢩࣇ࢓࢖࢔ࠖ ᛂ⏝≀⌮, Vol.75, No.11,
pp.1349-1353 (2006).
2) ᒸᓮ㐨ᙪࠊ࿴⏣Ὀ᫂ࠊᣢᮌᖾ୍ࠕ୰ᛶᏊ࢖࣓࣮
ࢪ㺃࢖ࣥࢸࣥࢩࣇ࢓࢖࢔ࢆ⏝࠸ࡓ୰ᛶᏊ㹁㹒ࠖ㠀◚ቯ ᳨ ᰝ ༠ ఍  ᖹ ᡂ 19 ᖺ ⛅ Ꮨ ኱ ఍ ㅮ ₇ ᴫ せ 㞟
pp327-330 (2007).

2-5
㻝㻡㻝

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JAEA-Review 2013-040

୰ᛶᏊ

䠟䠩䠫䠯

⿕᳨య

䜲䝯䞊䝆䝉䞁䝃

୰ᛶᏊ䜲䝯䞊䝆

⏬ീ䝕䞊䝍䜲䞁䝔䞁䝅䝣䜯䜲䜰䝍䞊䞁䝔䞊䝤䝹

ᅗ㸯 㹁㹒⏝୰ᛶᏊ㏱㐣ീ᧜ᙳࢩࢫࢸ࣒ࡢᵓᡂᅗ⾲ 㻝㻦䝎䜲䝘䝭䝑䜽 㻯㼀 ᐇ㦂᮲௳㻌
䜹䝯䝷㻌

᧜ീ⿦⨨㻌

ゎീᗘ䚸㼎㼕㼠 ᩘ㻌㻼㻾㻵㼄 ♫〇 㻯㻹㻻㻿㻌㻢㻠㻜㼤㻠㻤㻜㻌

㻿㼂㻢㻠㻞㻹㻌㻤㼎㼕㼠㻌୰ᛶᏊ 㻵㻚㻵㻚㻌㻮㼍㼟㼘㼑㼞 ♫〇 㻯㻹㻻㻿㻌㻭㻙㻡㻜㻠㻷㻌

㼒㼜㼟㻌

᧜ᙳᯛ
ᩘ㻌

᧜ീ᫬㛫㻌

ど㔝㻌

㻠㻜㻜㻌

㻞㻚㻜㼟㼑㼏㻌

㻥㼕㼚㼏㼔㻌 ⇞ᩱ㟁ụ㻞㻜㻜㻌㻝㻚㻜㼟㼑㼏㻌

㻢㼕㼚㼏㼔㻌⿕᳨య㻌㻞㻜㻜㻌㻝㻞㻤㻜㼤㻝㻜㻞㻠㻌
◁᫬ィ㻌

㻤㼎㼕㼠㻌

ᅗ㸲 ⇞ᩱ㟁ụࡢࢲ࢖ࢼ࣑ࢵࢡ㹁㹒ࡢฎ⌮⤖ᯝ

2-5

㻝㻡㻞

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JAEA-Review 2013-040

ᅗ㸳 ◁᫬ィࡢࢲ࢖ࢼ࣑ࢵࢡ㹁㹒ࡢฎ⌮⤖ᯝ

B
A

ᕥ┠

B

ྑ┠

A

AB

B

A

A B

ᅗ㸴 ❧యどࡢཎ⌮ᅗ㸵 ❧య㏱どࢩࢫࢸ࣒

2-5
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JAEA-Review 2013-040








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3.  ༶ Ⓨ࣐࢞ࣥ⥺ศᯒ 

3. Prompt Gamma-ray Analyses- 191 -

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JAEA-Review 2013-040

3-1
A Study on Improving the Linearity of Flash ADCs Using Neutron-capture
Prompt Gamma Rays
K. Furutaka, A. Kimura
Nuclear Science and Engeneering Directorate, JAEA, Tokai, Ibaraki 319-1195

In neutron-capture reactions, a lot of
gamma rays are emitted; in the capture reaction by a medium-heavy nuclide, literally
thousands of gamma-ray peaks are observedin the obtained spectra. Therefore, to observe each of the gamma-ray peaks with good
statistical acuracy, one needs to use a highperformance data acquisition (DAQ) system
to process and store the data.
With the recent advances in Flash-ADC
technology, one can build a high-speed DAQ
system in which analog as well as digital signal processing components are integrated in a
relatively small volume, and we are also developing one for multiple gamma-ray detection
in neutron capture reactions1–3) .
There is a wellknown drawback in FlashADC; its poor linearity4) . To determine energies of the gamma rays with suﬃcient accuracy and reliability, one has to improve
the linearity; otherwise, one can not identify
gamma ray peaks with conﬁdence.
As the ﬁrst step of the improvement, theauthors have measured widths of each code in
their DAQ system by digitizing signals whichwere produced with a digital pulse generator and which has a monotonically decreasing shape, and recording the number of appearances of all the codes (histograms). From
the observed histograms of the codes, relative widths of the codes were deduced. In
the histograms, many periodical spikes wereobserved diﬀerential nonlinearity (DNL) of
which amounted to as large as -0.3 and widths
are ∼ 1 least signiﬁcant bit (LSB). Moreover,large dips were also observed; their DNL issmaller (∼ 0.1) but the widths are as large as
30 codes.
Integrated values of the observed code
widths, which we call ‘fractional codes’, arethought to represent heights of the digitized signals more accurately than the origi-

nal codes, and we can use them to deduce theheights of the input pulses. To see whether
the pulse-height spectra obtained with the‘fractional codes’ are imporved in linearity,
we have measured gamma rays emitted in
14 N(n,γ) reactions and compared to those obtained with the original codes. Detailed data
analysis is now underway.

原子炉：JRR-3

分野：即発γ線分析実験（その他）

装置：MPGA(C2-3-2)References
1) A. Kimura, M. Koizumi, Y. Toh, A. Osa, M. Oshima, J. Goto, Y. Arai, M. Sagara, S. Iri, H. Kobayashi,
Y. Suzuki, “High Density and High Cost Performance Data Acquisition System for Multiple
Gamma-ray Detection”, IEEE Nuclear Science Symposium Conference Record NSS’04, 2004, 3, 1489–
1493.
2) A. Kimura, Y. Toh, M. Koizumi, K. Furutaka,T. Kin, M. Oshima, “Improvement of a high speed
and high density data acquisition system for multiple gamma-ray detection”, IEEE Nuclear Science Symposium Conference Record NSS’07, 2007,
1, 474–477.
3) A. Kimura, Y. Toh, M. Koizumi, K. Furutaka,T. Kin, M. Oshima, “Performance of a High Speedand High Density Data Acquisition System for
Multiple Gamma-ray Detection”, IEEE Nuclear
Science Symposium Conference Record NSS’08,
2008, 2107–2111.
4) Glenn F. Knoll, “Radiation Detection and Measurement (3rd ed.)”, John Wiley & Sons, Inc.
(New York), 1999, pp. 652.
5) K. Furutaka, A. Kimura, M. Koizumi, Y. Toh,
T. Kin, S. Nakamura, M. Oshima, “A Simple
Method to Measure and Improve Linearity of FlashADCs Used in Integrated VME ADC Modules”,
IEEE Nuclear Science Symposium Conference Record
NSS’09, 2009, 2229–2233.

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JAEA-Review 2013-040

3-2Development of a New Method to Identify Nuclear Levels
on Neutron Capture Reactions
T. Kin, K. Hara, M. Oshima
Japan Atomic Energy Agency, Nuclear Science and Engineering Directorate,
2-4 Shirane,Shirakata,Tokai-mura,Naka-gun,Ibaraki 311-1195, JapanSum of partial cross sections of groundstate transitions (gamma rays emitted fromexcited states to a ground state) is considered to be an eﬀective method for measurements of thermal neutron capture cross sections of minor actinides and long-lived ﬁssion
products1, 2) and we have a plan to adopt it
also to the measurements in the resonanceregion2) . To apply this method, identiﬁcation of ground state transitions is important.
However, information of ground-state transitions is insuﬃcient in many cases. We are,therefore, developing a new method to identify nuclear levels on neutron capture reactions with “STELLA,” the spectrometer at acold neutron beam line (C2-3-2).
There have been several methods for identifying nuclear levels after neutron capture
reactions including the “two-step analysis”3) .
We are also developing a method to analyze
data which can ﬁnd candidates of levels in ashort analysis time without complicated human manipulations. It is named “TELLA2(Total Energy Leading nuclear Level Analysis in 2-dimensional matrix)”. We measured
prompt gamma rays from 35 Cl(n,γ)36 Cl andthe data was used to develop and test themethod, TELLA-2.
The data obtained were now analyzing forthe development of the method. Figure 1
shows one of the spectra obtained.
References
1) K. Furutaka, et al. :“J. of Nucl. Sci. and Tech.”,41, 11, pp. 1033 (2004).
2) M. Oshima, et al. :“Proc. of ND2007”, pp. 603(2008).
3) Valery A. Bondarenko, et al. :“FIZIKA B”11, 4,
pp. 201

Figure 1: An example of the gamma-ray spectrum obtained through the experiment. Almost all peaks on thisﬁgure were emitted after neutron capture of 35 Cl.

原子炉：JRR-3

装置：MPGA(C2-3-2)

分野：即発γ線分析実験（その他）- 194 -

JAEA-Review 2013-040

3-3
Neutron Flux Correction for Standard Rice Sample Measurementin MPGA
Y. Toh, Y. Murakami1 , M. Oshima and M. Koizumi
Nuclear Science and Energy Directorate, Japan Atomic Energy Agency, Ibaraki 319-1195
1
Research Institute of Nuclear Engineering, Fukui University, Fukui, Fukui 910-8507

It has been well known that cadmium exposure produces negative health eﬀects on human beings. Since Japan is located in the volcano zone, the Cd concentration in soil tends
to be high, and the area of high Cd concentration agricultural products is unevenly distributed. The issue of Cd level in all foods
is of concerns, especially in rice, since riceis the most important food in Japan as wellas the major crop in Japanese agriculture. 1)
The maximum level for Cd in rice is speciﬁed by Japanese law to be 1.0 ppm. The
Codex adopted new standards on the maximum allowable levels of a number of food additives in order to protect the health of consumers(rice:0.4ppm).
Prompt gamma-ray analysis (PGA) is ahigh-sensitive, high-precision, multi-element,
and non-destructive method.
However,a quantiﬁcation diﬃculty arises when the
gamma-ray intensity from the trace elementof interest is not suﬃciently strong as compared with the intensities of backgroundgamma rays from large amounts of other elements in a sample. By applying the multiple gamma-ray detection method to prompt
gamma-ray analysis (PGA), the inﬂuence of
background, hydrogen in particular, can be

reduced. 2–5)
A neutron ﬂux correction has a major inﬂuence on quantiﬁcation quality and precisionof trace elements. We want to study here theinﬂuence of a neutron ﬂux correction in rice
sample measurements with MPGA.
A standard rice sample which contains
0.548 ppm cadmium was separated into six
aliquots. Table 1 shows quantiﬁcation results
for the aliquots. The result which do not take
into account neutron ﬂux is higher than therecommended value of standard rice sample.
In contrast, the result obtained by neutron
ﬂux correction agrees well with the recommended value.
References
1) FAOSTAT database: 2005. Food and Agriculture
Organization of the United Nations (FAO) Statistical Databases.
2) Y. Toh, et al.: “Appl. Rad. Isotepes”, 64, pp.
751-754 (2006).
3) R.P. Gardner, et al. :“Appl. Rad. Isotepes”, 53,
pp. 515-526 (2000).
4) P.P. Ember, et al. :“Appl. Rad. Isotepes”, 56, pp.
535-541 (2002).
5) M. Oshima, et al.:“J. Radioanal. Nucl. Chem.”,
271, pp. 317-319 (2007).

Table 1: Results for ∼290mg aliquots of the standard rice sample

No.
1
2
3
4
5
6

原子炉：JRR-3

weight
(mg)
289.9
262.1
244.3
102.0
116.3
103.0
Average

Non neutron ﬂux corrected(ppm)
0.80(20)0.74(18)0.83(19)0.92(28)0.63(27)0.71(28)0.77(9)

装置：MPGA(C2-3-2)

Neutron ﬂux corrected(ppm)
0.55(12)0.48(11)0.60(13)0.45(19)0.53(18)
0.78(22)0.55(6)

分野：即発γ線分析実験（その他）- 195 -

JAEA-Review 2013-040

3-4Multiple prompt γ-ray measurements of the 74 Ge(n,γ)75 Ge reaction
K.Y. Hara, T. Kin and M. Oshima
Nuclear Science and Engineering Directorate, JAEA, Tokai, Ibaraki 319-1195

We studied a decay scheme of 75 Ge in the
74 Ge(n,γ)75 Ge reaction. The information oflevel structures and γ-ray transitions are important for accurate determination of the neutron capture cross section of 74 Ge with theprompt γ-ray detection method, when the
cross section is derived by summing all theintensities of ground-state or primary transitions 1, 2) . However, the γ-ray transition
from/to excited state of 75 Ge above 2 MeV
is unknown. The γ-ray transitions in the energy of 3-4 MeV have not been assigned tothe decay scheme, although these transitions
were previously reported 3) .
The experiments were performed at the C23-2 beam line for Multiple Prompt Gammarays Analysis (MPGA). A target was irradiated by the cold neutron beam with a typicalintensity of ∼107 n/s/cm2 . For the 74 Ge target, a germanium oxide powder enriched in
74 Ge to 99% was used. The multiple prompt
γ-rays emitted from the 74 Ge(n,γ)75 Ge reaction were measured by using a gammaray spectrometer (STELLA) which consistsof eight clover-type Ge detectors and BGO
Compton-suppressors 4) .
The coincident
event data from these detectors were acquiredwith a data acquisition system based on theadvanced digital processing technique.
All energy spectra for a crystal weresummed into an energy spectrum. In addition, the energies of all γ rays which coincidentally detected with the Ge detectors weresummed to derive the total energy (Etot ). The
Etot should be nearly equal to the neutron
separation energy of 75 Ge (Sn =6505 keV),
if all prompt γ-rays in a cascade from thecompound state of 75 Ge were detected. To
discriminate the background, the event data
adapted to this condition were used in thepresent analysis, where the gate region for
Etot was from 6505-15 keV to 6505+15 keV.
The gated gamma energy spectrum is shownin Fig. 1. Many unknown γ-ray transitions, inaddition to the known one, were seen in theenergy spectrum.
The γ-γ coincidence analysis was applied tothe present data to identify the γ-ray transitions and the levels of 75 Ge. As a results, thecandidates of new γ-ray transitions and newlevels were found in the 74 Ge(n,γ)75 Ge reaction.
References
1) K. Furutaka, H. Harada and S. Raman :“J. Nucl.
Sci. and Tech.”, 41, 1033 (2004).
2) M. Oshima, J. Hori, H. Harada, et al. :“Proc. Int.
Conf. ND2007”, pp. 603-606 (2008).
3) ENSDF, http://www.nndc.bnl.gov/ensdf/
4) Y. Toh, M. Oshima, K. Furutaka, et al. : “J.
Radioanal. Nucl. Chem.”, 278, 703 (2008).

1.0e+06
Sn

Counts

1.0e+05
1.0e+04
1.0e+03
1.0e+02

0

1000

2000

3000
4000
Eγ (keV)

5000

6000

7000

Figure 1: Gamma rays energy spectrum. The solid arrows indicate the prominent unknown peaks. The dashedarrow indicates the position of Sn .

原子炉：JRR-3

装置：MPGA(C2-3-2)

分野：即発γ線分析実験（その他）- 196 -

JAEA-Review 2013-040

3-5ᅛయ⎔ቃヨᩱ࠾ࡼࡧᆅ⌫໬Ꮫⓗヨᩱࡢ༶Ⓨ࣐࢞ࣥ⥺ศᯒ㸦Ϭ㸧
Neutron-induced prompt gamma-ray analysis ofsolid environmental samples and geochemical samples (V)ᯇᑿᇶஅ࣭ஂ㔝❶ோ࣭ᑠ㇋ᕝ຾ぢ࣭㛗㇂ᕝ⠜ 1ㅖ⏫኱ᆅ࣭㧗ᶫ㯞Ꮚ࣭ᒣࣀ஭ಇ 2࣭ཎ┤ᶞ࣭⸨஭ᨻග
ᮾி኱Ꮫ኱Ꮫ㝔⥲ྜᩥ໬◊✲⛉ᗈᇦ⛉Ꮫᑓᨷ
1 ᮾிᾏὒ኱Ꮫ኱Ꮫ㝔ᾏὒ⛉Ꮫᢏ⾡◊✲⛉ᾏὒಖ඲Ꮫᑓᨷ
2 ᮾி኱Ꮫ኱Ꮫ㝔⌮Ꮫ⣔◊✲⛉໬Ꮫᑓᨷ㸯㸬ࡣࡌࡵ࡟

୍ࡘ࡛࠶ࡿࠋᮏ◊✲࡛ࡣࠊᖸ₲ᗏ㉁୰ࡢ໬Ꮫⓗ࡞ ✀ࠎࡢᅛయ⎔ቃヨᩱ࡟ࡘ࠸࡚ࠊࡑࡢ୰࡟ྵࡲࢀ

ί໬స⏝࡟ὀ┠ࡋࠊᖸ₲ᗏ㉁୰࡟࠾ࡅࡿ≀㉁ᚠ⎔ࡿඖ⣲ࡢ㔞ࢆᐃ㔞ࡋࠊࡑࡢศᕸࢆ᫂ࡽ࠿࡟ࡍࡿࡇ

ࡸ໬Ꮫኚ໬ࢆ᫂ࡽ࠿࡟ࡋࡓ࠸࡜⪃࠼ࡓࠋᖸ₲ࡢί࡜ࡣࠊヨᩱ⮬యࡢᙧᡂ㐣⛬ࢆ▱ࡿୖ࡛ࡶࠊヨᩱࡢ໬స⏝ࢆ᳨ウࡍࡿୖ࡛ࠊ୍⯡࡟ί໬⬟ຊࡀప࠸࡜

⨨࠿ࢀࡓ⎔ቃࢆ⌮ゎࡍࡿୖ࡛ࡶ㔜せ࡞ㄢ㢟࡜⪃⪃࠼ࡽࢀࡿ㐠Ἑࢆᖸ₲ࡢẚ㍑ᑐ㇟࡜ࡋࠊ2 ᆅⅬࡢ࠼ࡽࢀࡿࠋ୰ᛶᏊㄏ㉳༶ⓎȚ⥺ศᯒἲ(PGA)ࡣࠊ

㐪࠸ࢆ᫂ࡽ࠿࡟ࡍࡿࡇ࡜ࢆ┠ⓗ࡜ࡋࡓࠋ◊✲ᑐ㇟

㏻ᖖࡢᶵჾ୰ᛶᏊᨺᑕ໬ศᯒἲ(INAA)࡜ྠᵝ࡟ࠊ࡜ࡋ࡚ࠊᖸ₲࡟㛵ࡋ࡚ࡣ༓ⴥ┴⩦ᚿ㔝ᕷ࡟఩⨨ࡍከඖ⣲ྠ᫬ᐃ㔞ศᯒࡀྍ⬟࡞ࡓࡵࠊከࡃࡢඖ⣲ࡢࡿ㇂ὠᖸ₲ࢆ㑅ࢇࡔࠋࡲࡓᖸ₲ࡢẚ㍑ᑐ㇟࡜ࡋ࡚

ศᕸࢆ⥲ྜⓗ࡟ุ᩿ࡍࡿࡢ࡟㐺ࡋࡓศᯒἲ࡜ゝࡣࠊᮾி㒔࠼ࡿࠋࡉࡽ࡟ PGA ࡣࠊINAA ࡛ࡣศᯒࡀᅔ㞴࡞ H,⪅ࡣ஫࠸࡟ᾏỈ࡜ῐỈࡢΰࡊࡾྜ࠺ỶỈᇦ࡛࠶

B, S, Si ➼ࡢ㍍ඖ⣲ࡸ Cd ➼ࡢ᭷ᐖඖ⣲ࡢᐃ㔞ࡀࡾࠊ࠿ࡘࠊᆅ㉁ࡢ᫬௦࠾ࡼࡧᒾ▼༊ศࡶྠࡌ࡛࠶

ྍ⬟࡛࠶ࡿࠊヨᩱࡢㄏᑟᨺᑕ⬟ࡀపࡃྠศᯒἲ࡛

ࡿ࡜࠸࠺Ⅼ࠿ࡽࠊ୧ᆅⅬࡢẚ㍑ࡣί໬స⏝ࡢ㐪࠸౑⏝ࡋࡓヨᩱࢆ௚ࡢศᯒἲ࡛෌౑⏝ࡍࡿࡇ࡜ࡀ

ࢆ⪃࠼ࡿୖ࡛㔜せ࡞▱ぢࢆ୚࠼ࡿ࡜⪃࠼ࡽࢀࡿࠋ

ྍ⬟࡛࠶ࡿࠊ࡜࠸ࡗࡓ≉㛗ࢆᣢࡘඃࢀࡓศᯒἲ࡛

◊✲᪉ἲ࡜ࡋ࡚ࠊ㇂ὠᖸ₲࠾ࡼࡧⰪᾆ㐠Ἑ࡛ᐇ࠶ࡿࠋᮏ◊✲࡛ࡣࠊྠἲࢆ⏝࠸ࡿࡇ࡜࡟ࡼࡾࠊḟ㝿࡟ᗏ㉁ࢆ᥇ྲྀࡋࠊᗏ㉁୰࡟ྵࡲࢀࡿ⣙ 30 ඖ⣲࡟ᥖࡆࡿヨᩱ࡟ࡘ࠸࡚✀ࠎࡢ⎔ቃ໬Ꮫⓗࠊᆅ⌫໬ࡢ㖄┤ศᕸࢆ୰ᛶᏊㄏ㉳༶ⓎȚ⥺ศᯒ(PGA)࠾ࡼ

Ꮫⓗ࡞᳨ウࢆ⾜ࡗࡓࡢ࡛ࠊࡑࢀࡒࢀࡢヨᩱࡈ࡜࡟ࡧᶵჾ୰ᛶᏊᨺᑕ໬ศᯒ(INAA)࡟ࡼࡾゎᯒࡋࠊඖ◊✲ෆᐜ࠾ࡼࡧࡑࡢ⤖ᯝࢆሗ࿌ࡍࡿࠋ

⣲ᣲື࠾ࡼࡧඖ⣲㛫ࡢ┦஫స⏝࡟ࡘ࠸࡚⪃ᐹࢆ༊࡟఩⨨ࡍࡿⰪᾆ㐠Ἑࢆ㑅ࢇࡔࠋ୧⾜ࡗࡓࠋࡲࡓࠊᗏ㉁୰࡛ࡣ᎘Ẽᛶࡢ⣽⳦࡛࠶ࡿ◲㸰㸬㇂ὠᖸ₲࠾ࡼࡧⰪᾆ㐠Ἑᗏ㉁୰ࡢඖ⣲ศᕸ࡜㓟㑏ඖ⳦ࡢάື࡟ࡼࡾ◲໬Ỉ⣲ࡀⓎ⏕ࡋࠊᗏ㉁୰

໬Ꮫ≧ែ࠿ࡽぢࡓ⎔ቃホ౯ࡢ㕲࢖࢜ࣥ࡜཯ᛂࡋ◲໬㕲ࡸ Pyrite(FeS2)ࢆ⏕ᡂ

࠙ᗎࠚᖸ₲ࡣࠊࡁࢀ࠸࡞Ỉࢆ⏘ࡳฟࡍኳ↛ࡢί໬ࡍࡿࡇ࡜࠿ࡽࠊ࣓ࢫࣂ࢘࢔࣮ศගἲ࡟ࡼࡾ Fe ࡢࣇ࢕ࣝࢱ࣮ࡢᙺ๭ࢆᯝࡓࡋ࡚࠸ࡿⅬ࡛ὀ┠ࢆ㞟໬Ꮫ≧ែࢆࡵ࡚࠸ࡿࠋᖸ₲࡟࠾ࡅࡿί໬స⏝ࡢ࣓࢝ࢽࢬ࣒ࢆ

ࡣࠊFe ࢆྵࢇ࡛࠸ࡿ≀㉁ࡢ⨨࠿ࢀ࡚࠸ࡓ⎔ቃࢆ᥎ゎ᫂ࡍࡿࡇ࡜ࡣ⎔ቃၥ㢟࡟࠾ࡅࡿ㔜せ࡞ㄢ㢟ࡢᐃࡍࡿୖ࡛ࠊ኱ኚ㔜せ࡛࠶ࡿ࡜⪃࠼ࡽࢀࡿࠋ

ᐃࡋࡓࠋFe ࡢ໬Ꮫ≧ែࢆㄪ࡭ࡿࡇ࡜◊✲᪋タ࡜⿦⨨ྡ                ◊✲ศ㔝㹈㹐㹐㸫㸱㹋ࠊ༶ⓎȚ⥺ศᯒ⿦⨨         ⎔ቃ໬Ꮫࠊᆅ⌫໬Ꮫࠊศᯒ໬Ꮫ

㻣㻢- 197 -

JAEA-Review 2013-040

࠙ᐇ㦂ࠚヨᩱ࡜ࡋ࡚ࠊ㇂ὠᖸ₲࠾ࡼࡧⰪᾆ㐠Ἑࡢ࡟ᑐࡋࠊⰪᾆ㐠Ἑ࡛ࡣ᪥ᮏᅵተ࡟ྵࡲࢀࡿ⃰ᗘࡢ

ᗏ㉁ࢆᆶ┤᪉ྥ࡟᥇ྲྀࡋࡓࠋ᥇ྲྀ࡟ࡣෆᚄ 6cm ࡢᖹᆒ್࡛࠶ࡿ 0.44ppm ࡢ 10 ಸ⛬ᗘࡢ⃰ᗘ᳨࡛ฟ࢔ࢡࣜࣝࣃ࢖ࣉࢆ⏝࠸ࠊᚓࡽࢀࡓ⣙ 50cm ࡢࢥ࢔

ࡉࢀࡓࠋCr ࡣ㇂ὠᖸ₲࡛ࡣ῝ࡉ᪉ྥ࡟኱ࡁ࡞ኚ໬

ࢆ⌧ᆅ࡛ 3cm ࡈ࡜࡟ษࡾศࡅࠊ㓟໬ࢆ㜵ࡄࡓࡵࡣ࡞ࡃࠊࡑࡢ⃰ᗘࡣ 50㹼60ppm ࡛࠶ࡿࡀⰪᾆ㐠Ἑ

N2 ୰࡟ᑒධࡋࡓࠋᚓࡽࢀࡓヨᩱࡣ N2 ࢆ⏝࠸ࡓຍ࡛ࡣ୰ᒙ㒊࡛ᴟ኱ࢆ♧ࡋࠊ㧗࠸࡜ࡇࢁ࡛ࡣ㇂ὠᖸ

ᅽℐ㐣࡟ࡼࡾ㛫㝽Ỉࢆྲྀࡾ㝖ࡁࠊ࣓ࢫࣂ࢘࢔࣮

₲ࡢ 4 ಸ⛬ᗘ࡛࠶ࡗࡓࠋCr ࡢ᪥ᮏᅵተ࡟ྵࡲࢀࡿ

ᐃ࡟⏝࠸ࡓࠋࡲࡓࠊࡑࡢᚋࠊ෾⤖஝⇱ࢆ᪋ࡋࠊࡵ

⃰ᗘࡢᖹᆒ್ࡣ 50ppm ࡛࠶ࡾࠊ㇂ὠᖸ₲࡛ࡣᴫࡡࡢ࠺ங㖊࡛⢊○ࡋᆒ୍࡟ࡋࡓࠋࡑࡢ୰࠿ࡽ⣙ᖹᆒ⛬ᗘ࡛࠶ࡿ࡜ゝ࠼ࡿࠋⰪᾆ㐠Ἑ࡛ࡣởᰁࡀ㐍

200mg ࢆ⢭⛗ࡋࠊ㘄๣ᡂᆺჾࢆ⏝࠸࡚┤ᚄ 10mmࠊࢇ࡛࠸ࡿࡇ࡜ࢆព࿡ࡋࠊ㇂ὠᖸ₲ࡣ໬Ꮫⓗ࡟ởᰁཌࡉ⣙ 1mm ࡢ࣌ࣞࢵࢺ࡟ᡂᆺࡋࡓࠋࡇࢀࢆ୰ᛶ

ࡀࡉࢀ࡚࠸࡞࠸ࡇ࡜ࡀࢃ࠿ࡗࡓࠋCd, Cr ࡜࠸ࡗࡓᏊࣅ࣮࣒ࢧ࢖ࢬ࡛࠶ࡿ 20mm ᅄ᪉௨ෆ࡟཰ࡲࡿ

ඖ⣲ࡣேⅭ㉳※࡛࠶ࡿྍ⬟ᛶࡀ㧗ࡃࠊᗏ㉁୰࡟ሁ

ࡼ࠺࡟ࠊཌࡉ 12ȣm ࡢ FEP ࣇ࢕࣒ࣝ࡟ᑒධࡋࠊ

✚ࡉࢀ࡚࠸ࡿࡇ࡜ࡀࢃ࠿ࡗࡓࠋࢸࣇࣟࣥ〇ࡢᑓ⏝࣍ࣝࢲ࣮࡟ᅛᐃࡋࡓ࠺࠼࡛ࠊ᪥ ≧ែศᯒ࡟࠾࠸࡚ࠊ࣓ࢫࣂ࢘࢔࣮ศගἲࢆ⏝࠸ᮏཎᏊຊ◊✲㛤Ⓨᶵᵓ JRR-3M ࡢ୰ᛶᏊࣅ࣮࣒

ࡿࡇ࡜࡛ Fe ࡢ໬Ꮫ≧ែูࡢ㖄┤ศᕸࡀ᫂ࡽ࠿࡟

࢞࢖ࢻ࡟タ⨨ࡋࠊHe 㞺ᅖẼ୰࡛ 3600 ⛊㛫༶ⓎȚ࡞ࡗࡓࠋ࡝ࡢࢥ࢔ヨᩱࡶ Pyrite(FeS2)ࡀ୰ᒙ㒊௜㏆⥺ࢆᐃࡋࡓࠋ୰ᛶᏊ᮰ࡢኚືࢆ⿵ṇࡍࡿࡓࡵ࡟ࠊ ࡛ᴟ኱ࢆ♧ࡋࠊࡑࢀ࡟ᑐࡋ࡚┦⿵ⓗ࡟࡞ࡿࡼ࠺࡟

24 ᫬㛫࡟୍ᅇࠊ୍ᐃࡢ Ti ᯈ(Ti flux monitor)ࢆ

Fe
Conc. / %ᐃࡋ࡚ᚓࡽࢀࡿ 342keV ࡜ 1381keV ࣆ࣮ࢡࡢィ0ࡉࢀ࡚࠸ࡿ Ti flux monitor ࡢィᩘ⋡࡛つ᱁໬ࡋࡓศᯒឤᗘࢆ⏝࠸࡚ྛඖ⣲ࡢྵ᭷㔞ࢆィ⟬ࡋࡓࠋ
INAA ἲ࡟㛵ࡋ࡚ࡣࠊ᪥ᮏཎᏊຊ◊✲㛤Ⓨᶵᵓࡢ

Depth / cmᩘ⋡ࡢᖹᆒ್࡛๭ࡾࠊẚ㍑ᶆ‽ヨᩱ࡟ࡘ࠸࡚ሗ࿌

JRR-4 ࡟࡚↷ᑕࢆ⾜࠸ࠊ኱Ꮫ㛤ᨺ◊ࡢȚ⥺ࢫ࣌ࢡࣟࢺ࣓࣮ࢱ࣮࡟࡚

5

Al
Conc. / %
10

0

0

0

10

10

20

20

30

30

40

40

50

50

ᐃࢆ⾜ࡗࡓࠋ
0࡜ࡀ࡛ࡁࡓࠋᚓࡽࢀࡓඖ⣲ࡢ㖄┤ศᕸࡢ࠺ࡕί໬
స⏝࡟㛵㐃ࡍࡿ࡜⪃࠼ࡽࢀࡿ≉ᚩⓗ࡞ 6 ඖ⣲ࡢ㖄┤ศᕸࢆᅗ㸯࡟♧ࡍࠋࢥ࢔ヨᩱ୰ࡢඖ⣲ࡢ⃰ᗘศᯒ࡟ࡼࡾ Al, Fe, Ti

Depth / cm

࢔ヨᩱ࡟ࡘ࠸࡚ࡶ⣙ 30 ඖ⣲ࡢ㖄┤ศᕸࢆᚓࡿࡇ

2

4

0

6

0

0

10

10

20

20

30

30

40

40

Cr
Conc. / ppm
0

100

200

0

0

0

࠸ࡿࡓࡵࠊࡇࡢ⤖ᯝࡣࡑࢀࢆᨭᣢࡍࡿࡶࡢ࡛࠶ࡿࠋ

10

10

S, H, Cd, Cr ࡣ୰ᒙ㒊࡛ᴟ኱ࢆ♧ࡋࡓࠋS ࡣᗏ㉁ࡢ20

20㑏ඖ≧ែ࡟ࡼࡾࠊ◲㓟࢖࢜ࣥࡀ◲໬≀࢖࢜ࣥ࡞࡝

30

30

࡜࡞ࡗ࡚௚ࡢඖ⣲࡜⤖ࡧࡘࡁᅛᐃࡉࢀࡓࡶࡢ࡜

40

40⪃࠼ࡽࢀࡿࠋCd ࡣࡑࡢ◲໬≀࢖࢜ࣥ࡞࡝࡜཯ᛂࡋ

50

50

ࡓࠋ㇂ὠᖸ₲࡛ࡣ᳨ฟ㝈⏺௨ୗ(<0.5ppm)࡛࠶ࡿࡢ

0.5

1

1.5

1

1.5

H
Conc. / %࡟࠾࠸࡚⛣ືࡋ࡟ࡃ࠸ඖ⣲࡛࠶ࡿ࡜⪃࠼ࡽࢀ࡚

ᗏ㉁୰ࡢ S ࡜ఝࡓᣲືࢆ♧ࡋ࡚࠸ࡿ㒊ศࡀࡳࡽࢀ

15

50

50

ࡣ῝ࡉ᪉ྥ࡟ኚ໬ࡀ࡞࠿ࡗࡓࠋAl ࡣ᭱ࡶ㢼໬཯ᛂ࡚ᅛ┦࡟ྲྀࡾ㎸ࡲࢀࡓࡶࡢ࡜⪃࠼ࡽࢀࡿࠋᐇ㝿ࠊ

10

S
Conc. / %Cd
Conc. / ppm

࠙⤖ᯝཬࡧ⪃ᐹࠚPGA ࡜ INAA ἲ࡟ࡼࡾࠊ࡝ࡢࢥ

5 ʄ: Yatsu tideland

0.5

ʊ: Shibaura canalᅗ㸯㸬㇂ὠᖸ₲࠾ࡼࡧⰪᾆ㐠Ἑᗏ㉁୰ࡢ Fe, Al,
Cd, S, Cr, H ࡢᆶ┤ศᕸ

3-5
㻣㻣

- 198 -

JAEA-Review 2013-040୺࡜ࡋ࡚ Fe3+ h.s.ࡉࡽ࡟ Fe2+ h.s.ࡀኚືࡋ࡚࠸ࡿࡇ࠸࡚ࠊ῝ᗘูࠊඖ⣲ู࡟ศ㢮ࢆ⾜࠸ࠊ㓟໬㑏ඖ㟁࡜ࡀࢃ࠿ࡗࡓࠋࡇࢀࡽࡢᡂศࡀ⁐ฟࡋࡓࡶࡢ࡜ࠊ

఩➼࡜ࡢ┦㛵࡟ࡘ࠸࡚⪃ᐹࡋࡓࠋᾏỈࡸ⏕ά᤼Ỉ㉳※ࡢ◲㓟࢖࢜ࣥࡀ㑏ඖࡉࢀࡓ࠙⤖ᯝཬࡧ⪃ᐹࠚከᦶᕝἙཱྀᖸ₲ᗏ㉁ࡢ㓟໬㑏ඖ◲໬≀࢖࢜ࣥ࠿ࡽ Pyrite ࡀ⏕ᡂࡉࢀࠊᗏ㉁୰࡟ᅛ

㟁఩(ORP)ࡣࠊ⾲ᒙ࠿ࡽ῝ࡉ⣙ 20cm ࡲ࡛ࡣṇ࡛ࠊᐃࡉࢀࡓࡶࡢ࡜⪃࠼ࡽࢀࡿࠋ

20cm ௨῝࡛ࡣ㈇ࡢ್ࢆྲྀࡗ࡚࠸ࡓࠋࡲࡓࡇࡢ

⥲ࡌ࡚ࠊ㇂ὠᖸ₲ࡢࡼ࠺࡟ởᰁࡀ㐍ࢇ࡛࠸࡞࠸

ORP ࡢኚ໬ࢆࠊඖ⣲ศᯒ್ࡼࡾᚓࡽࢀࡓከᦶᕝἙ

ሙᡤ࡛ࡣࠊFe ࡞࡝ࡀ◲໬≀࢖࢜ࣥ࡜཯ᛂࡋ࡚ࠊFeཱྀᖸ₲ᗏ㉁ࡢࢡࣛࢫࢱ࣮ศᯒࡢ⤖ᯝ࡜⤌ࡳྜࢃࡢ◲໬≀࡛࠶ࡿ Pyrite ࡞࡝ࡀ⏕ᡂࡉࢀࡿࠋ୍᪉ࠊ

ࡏ࡚⪃࠼ࡿ࡜ࠊORP ࡀṇࡢヨᩱ࡜㈇ࡢヨᩱ࡛ࠊࣘⰪᾆ㐠Ἑࡢࡼ࠺࡟ởᰁࡉࢀ࡚࠸ࡿሙᡤ࡛ࡣࠊCd࣮ࢡࣜࢵࢻ㊥㞳ࡀ኱ࡁࡃ࡞ࡿ࡜࠸࠺ഴྥࡀぢࡽࡢࡼ࠺࡞◲໬≀ࢆసࡾࡸࡍ࠸㔠ᒓࡀඛ࡟◲໬≀ࢀࡓ(ᅗ㸰)ࠋࡲࡓࠊᅗ୰࡟࠾࠸࡚ୗഃ࡟఩⨨ࡍࡿ 3࢖࢜ࣥ࡜཯ᛂࡋ࡚ࠊᗏ㉁୰࡟ᅛᐃࡉࢀࠊ◲໬≀࢖ヨᩱ࡟ࡘ࠸࡚ࠊࡑࡢ௚ࡢヨᩱ࡟ẚ࡭ࠊ᭷ព࡟࣮ࣘ

࢜ࣥࡀవ๫࡞᫬࡟ࡣ Fe ࡞࡝࡜཯ᛂࡍࡿࠋᮏ◊✲ࢡࣜࢵࢻ㊥㞳ࡀ㞳ࢀ࡚࠸ࡓࠋࡇࢀࡽࡢ 3 ヨᩱ࡟ࡘ࡟ࡼࡾࠊ㐠Ἑࡢࡼ࠺࡞ί໬స⏝ࡢ࡞࠸࡜⪃࠼ࡽࢀ࠸࡚ࡣࠊேⅭ㉳※ࡀ␲ࢃࢀࡿ Cr ࡸ Zn ࡜࠸ࡗࡓඖ

࡚ࡁࡓሙᡤ࡟࠾࠸࡚ࡶί໬స⏝ࡀാ࠸࡚࠸ࡿྍ

⣲ࡢ⃰ᗘࡀࠊ௚ࡢヨᩱ࡜ẚ࡭࡚㧗ࡃ࡞ࡗ࡚࠸ࡓࠋ

⬟ᛶࡀ࠶ࡿࡇ࡜ࡀ᫂ࡽ࠿࡟࡞ࡗࡓࠋ

ࡲࡓྠࡌヨᩱࢆ MDS ࡟ࡼࡗ࡚ゎᯒࡋࡓ⤖ᯝ(ᅗ㸱)࡟࠾࠸࡚ࡣࠊ࡯࡜ࢇ࡝ࡢⅬࡀ 2 ㍈ୖ࡟஌ࡗ࡚࠸

㸱㸬ᖸ₲ᗏ㉁ࡢ㓟໬㑏ඖ㟁఩࡜ᗏ㉁୰ࡢඖ⣲ࡢᣲࡓࠋࡇࡢ 2 ㍈ࡣࢡࣛࢫࢱ࣮ศᯒ࡛ᕪࡀぢࡽࢀࡓືORP ኚ໬࡜ேⅭ㉳※࡟ᑐᛂࡍࡿ࡜⪃࠼ࡽࢀࠊࡇࢀ

࠙ᗎࠚᮾி‴ࡣከࡃࡢ㒔ᕷἙᕝࡀὶࢀ㎸ࡳࠊࡲࡓࡽࡀ MDS ࢆే⏝ࡍࡿࡇ࡜࡛ࠊࡼࡾ᫂☜࡟ホ౯࡛㛢㙐ᛶࡢᙉ࠸ෆ‴ᇦ࡛࠶ࡿ࡜࠸࠺ᆅᙧⓗ≉ᚩ࠿ࡽࠊởᰁࡉࢀࡿࡇ࡜ࡀከ࠿ࡗࡓࠋ⌧ᅾ࡛ࡶኟᏘ࡟
ࡣ㈋㓟⣲ỈሢࡢⓎ⏕ࡀሗ࿌ࡉࢀࠊ㨶㈅㢮࡬ࡢ῝้࡞ᙳ㡪ࡀᣦ᦬ࡉࢀࡿ➼ከࡃࡢ⎔ቃၥ㢟ࢆᢪ࠼࡚࠾ࡾࠊỈ㉁ࡸ⏕≀࡟╔┠ࡋࡓ◊✲ࡀ㠀ᖖ࡟┒ࢇ࡛࠶ࡿࠋࡋ࠿ࡋࠊᗏ㉁࠿ࡽᚓࡽࢀࡿ᝟ሗࢆ⎔ቃࡢኚ㑄ࡢᒚṔ࡜ࡋ࡚ࠊ⎔ቃࢆホ౯ࡍࡿ࡜࠸࠺❧ሙ࡛࡞ࡉࢀ࡚࠸ࡿ◊✲ࡣᑡ࡞࠸ࠋࡑࡇ࡛ᮏ◊✲࡛ࡣࠊᮾ
ி‴࡟ከࡃᏑᅾࡋ⊂≉ࡢ⏕ែ⣔ࢆᣢࡘ࡜ゝࢃࢀࡿᖸ₲ࠊࡑࡋ࡚ẚ㍑⏝࡜ࡋ࡚ࠊᑠ⥙௦‴ࡢᖸ₲

ᅗ 2㸬ከᦶᕝἙཱྀᖸ₲ᗏ㉁ࡢ῝ᗘูࢹࣥࢻࣟࢢ࣒ࣛ
ࢆ୸࡛ᅖࢇ࡛♧ࡋࡓ)(ORP ࡀ㈇ࡢヨᩱࢆ

ᗏ㉁ࢆ㖄┤᪉ྥ࡟᥇ྲྀࡋศᯒࡍࡿࡇ࡜࡛ࠊỈ㉁ࡢ㑏ඖⓗ⎔ቃ࡜ᗏ㉁୰ࡢඖ⣲ࡢᣲື࡜ࡢ㛵ಀࢆ᫂ࡽ࠿࡟ࡍࡿࡇ࡜ࢆ┠ⓗ࡜ࡋࡓࠋ࠙ᐇ㦂ࠚከᦶᕝἙཱྀᖸ₲ࠊᑠ⥙௦‴ᖸ₲ࡑࢀࡒࢀ࡟࠾࠸࡚ࠊࢥ࢔ࢧࣥࣉ࣮࡛ࣛ㖄┤᪉ྥ࡟᥇ྲྀࡋࡓ
ᗏ㉁ࢆ῝ࡉ᪉ྥ࡟ 3 cm ẖ࡟࢝ࢵࢺࡋࠊຍᅽࢁ㐣ࢆ⾜ࡗࡓᚋࠊࣇ࣮ࣜࢬࢻࣛ࢖ࡋࡓࠋᚓࡽࢀࡓ஝⇱ヨᩱ࡟ࡘ࠸࡚ࠊPGA ࡜ INAA ἲࢆ⏝࠸࡚ከඖ⣲ࡢᐃ㔞ศᯒࢆ⾜ࡗࡓࠋᐃ㔞್ࡣࢹ࣮ࢱࡢ㢮ఝᗘࢆ࣮ࣘࢡࣜࢵࢻ㊥㞳ࡢ኱ᑠ࡛⾲ࡍࢡࣛࢫࢱ࣮ศᯒ࡜
ከḟඖᑻᗘᵓᡂἲ(MDS)ࡢ 2 ࡘࡢ⤫ィⓗᡭἲࢆ⏝ᅗ 3㸬ከᦶᕝἙཱྀᖸ₲ᗏ㉁ࡢ MDS ࡟ࡼࡿ⤖ᯝ

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JAEA-Review 2013-040

ࡁࡓࠋORP ኚ໬ࡢᑠࡉ࠸ᑠ⥙௦‴ᖸ₲ᗏ㉁࡛ࡣࡇ

8. ᮾி‴ឤ₻ᇦᗏ㉁࡟࠾ࡅࡿ㓟໬㑏ඖ㟁఩࡜ඖࡢഴྥࡣぢࡽࢀ࡞࠿ࡗࡓࠋ

⣲ࡢᣲື࡟㛵ࡍࡿ◊✲ࠊཎ┤ᶞ࣭ᑠ㇋ᕝ຾ぢ࣭௨ୖࡢ⤖ᯝ࠿ࡽࠊᖸ₲࡜࠸࠺」㞧࡞⣔࡟ࡘ࠸࡚ᯇᑿᇶஅࠊࠕி኱ཎᏊ⅔ࡢ෌㛤࡜ᨺᑕ໬ศᯒࠖᑓࡶࠊせ⣲ࢆ⤠ࡿࡇ࡜࡛ಶࠎࡢせ⣲ࡢᙳ㡪ࢆホ౯ࡋ㛛◊✲఍ሗ࿌᭩ࠊி㒔኱ᏛཎᏊ⅔ᐇ㦂ᡤࠊ53-59

ᚓࡿࡇ࡜ࡀศ࠿ࡗࡓࠋࡲࡓከᦶᕝἙཱྀᖸ₲࡟࠾࠸

(2009)

࡚ࡣࠊඖ⣲ࡢᣲືࡀ ORP ኚ໬࡟ࡼࡗ࡚኱ࡁ࡞ᙳ

9. 㞷ị୰ࡢ⢏Ꮚ≧≀㉁ࢆ⏝࠸ࡓ኱Ẽ⎔ቃホ౯࡟㡪ࢆཷࡅ࡚࠸ࡿࡇ࡜ࡀศ࠿ࡗࡓࠋ

㛵ࡍࡿ◊✲ࠊ⸨஭ᨻග࣭ᑠ㇋ᕝ຾ぢ࣭ᯇᑿᇶஅࠊ
ࠕி኱⅔ .85 ࡟࠾ࡅࡿ⥲ྜⓗᚤ㔞ඖ⣲ィࢩ㸲㸬ᡂᯝࡢබ⾲ࢫࢸ࣒ࡢᵓ⠏࡜ᛂ⏝ࠖᑓ㛛◊✲఍ሗ࿌᭩ࠊி㒔Ꮫ⾡ㄅࠊ⣖せ➼኱ᏛཎᏊ⅔ᐇ㦂ᡤࠊ༳ๅ୰

1. Estimation of the sources of pelagic sediments fromᏛ఩ㄽᩥ

the South Pacific Ocean to the Antarctic Ocean, K.

10. ከᦶᕝ࡜ࡑࡢᨭὶ࡟࠾ࡅࡿἙᕝ⎔ቃࡢホ౯

Shozugawa, A. Kuno, Y. Sano and M. Matsuo, J.

㹼ேⅭ㉳※≀㉁ࡢᙳ㡪ࢆ᥈ࡿ㹼ࠊཎ┤ᶞࠊᮾி

Radioanal. Nucl. Chem., Articles, 278, 331-335

኱Ꮫᩍ㣴Ꮫ㒊ᗈᇦ⛉Ꮫ⛉ ༞ᴗㄽᩥϨ (2007 ᖺ(2008)

11 ᭶)

2. Influence of reclamation on the concentrations and11. 㞷ị୰ࡢ⢏Ꮚ≧≀㉁ࡢඖ⣲ศᯒ࡟ࡼࡿ኱Ẽởchemical states of elements in tideland sediment, D.

ᰁ≀㉁ࡢᣲື࡟㛵ࡍࡿ◊✲ࠊ⸨஭ᨻගࠊᮾி኱

Moromachi, A. Kuno and M. Matsuo, J. Radioanal.

Ꮫᩍ㣴Ꮫ㒊ᗈᇦ⛉Ꮫ⛉ ༞ᴗㄽᩥϨ (2008 ᖺ 11

Nucl. Chem., Articles, 278, 495-498 (2008)᭶)

3. ༡ኴᖹὒ࡟࠾ࡅࡿ㐲ὒᛶሁ✚≀ࢆࣉ࣮ࣟࣈ࡜

12. ᖸ₲ᗏ㉁ࡢඖ⣲ศᕸ࡟ཬࡰࡍ࿘㎶㒊ᇙ❧࡚ࡢࡋࡓሁ✚ᙜ᫬ࡢẼೃኚືࡢ᳨ウࠊᑠ㇋ᕝ຾ぢ࣭ᙳ㡪࡟㛵ࡍࡿ◊✲ࠊㅖ⏫኱ᆅࠊᮾி኱Ꮫ኱Ꮫ㝔㔠஭㇏࣭బ㔝᭷ྖ࣭ᯇᑿᇶஅࠊ
ࠕᨺᑕ໬ศᯒἲ฼

⥲ྜᩥ໬◊✲⛉ᗈᇦ⛉Ꮫᑓᨷ ಟኈㄽᩥ (2009⏝࡟㛵ࡍࡿᅜ㝿໬ࠖᑓ㛛◊✲఍ሗ࿌᭩ࠊி㒔኱

ᖺ 1 ᭶)

ᏛཎᏊ⅔ᐇ㦂ᡤࠊ58-69 (2008)13. 㓟ᛶ㞵⿕ᐖࡀぢࡽࢀࡿᆅᇦ࡟࠾ࡅࡿᅵተࡢඖ

4. Elemental analysis and acid neutralization capacity⣲ศᯒ࡜㓟୰࿴⬟࡜ࡢ㛵㐃ᛶࠊ㧗ᶫ㯞Ꮚࠊᮾிof soil at the area where the acid rain damage is኱Ꮫ኱Ꮫ㝔⥲ྜᩥ໬◊✲⛉ᗈᇦ⛉Ꮫᑓᨷ ಟኈ

observed, A. Takahashi, A. Kuno and M. Matsuo,

ㄽᩥ (2009 ᖺ 1 ᭶)ࠕᨺᑕ໬ศᯒἲ฼⏝࡟㛵ࡍࡿᅜ㝿໬ࠖᑓ㛛◊✲

14. ஺᥮ᛶ㝧࢖࢜ࣥ࡟ࡼࡿᅵተࡢ㓟୰࿴⬟ࡢゎᯒࠊ఍ሗ࿌᭩ࠊி㒔኱ᏛཎᏊ⅔ᐇ㦂ᡤࠊ70-78 (2008)ᒣࣀ஭ಇࠊᮾி኱Ꮫ኱Ꮫ㝔⌮Ꮫ⣔◊✲⛉໬Ꮫᑓ

5. ㇂ὠᖸ₲ཬࡧⰪᾆ㐠Ἑࡢᗏ㉁୰࡟࠾ࡅࡿỈ㉁ᨷ ಟኈㄽᩥ (2009 ᖺ 2 ᭶)ί໬స⏝ࡢゎᯒࠊ㛗㇂ᕝ⠜࣭⏣୰⨾✑࣭ஂ㔝❶15. ㇂ὠᖸ₲࠾ࡼࡧⰪᾆ㐠Ἑࡢᗏ㉁࣭㛫㝽Ỉ୰࡟ோ࣭ᯇᑿᇶஅ, ศᯒ໬Ꮫ, 58, 87-94 (2009)࠾ࡅࡿί໬ᶵ⬟࡟㛵ࡍࡿ◊✲ࠊ㛗㇂ᕝ⠜ࠊᮾி

6. ㇂ὠᖸ₲ሁ✚≀୰ࡢί໬ᶵ⬟࡟࠾ࡅࡿ㛫㝽Ỉᾏὒ኱Ꮫ኱Ꮫ㝔ᾏὒ⛉Ꮫᢏ⾡◊✲⛉ᾏὒಖ඲Ꮫ

ࡢᙺ๭࡟㛵ࡍࡿ◊✲ࠊ㛗㇂ᕝ⠜࣭⏣୰⨾✑࣭㝰ᑓᨷ ಟኈㄽᩥ (2009 ᖺ 3 ᭶)಴┿࣭ஂ㔝❶ோ࣭ᯇᑿᇶஅ, ศᯒ໬Ꮫ, 58, 327-332

16. 㑏ඖⓗ⎔ቃୗ࡟࠾ࡅࡿᗏ㉁୰ࡢඖ⣲ࡢᣲື࡜(2009)

໬Ꮫ≧ែ࡟㛵ࡍࡿ◊✲ࠊཎ┤ᶞࠊᮾி኱Ꮫ኱Ꮫ

57

7. Fe Mössbauer study of specific iron species in the㝔⥲ྜᩥ໬◊✲⛉ᗈᇦ⛉Ꮫᑓᨷ ಟኈㄽᩥAntarctic Ocean sediments, K. Shozugawa, A. Kuno,(2010 ᖺ 1 ᭶)

H. Miura and M. Matsuo, J. Nucl. Radiochem. Sci.,Ꮫ఍Ⓨ⾲➼10, 13-17 (2009)17. ᶵჾ୰ᛶᏊᨺᑕ໬ศᯒἲ㺃༶Ⓨ࣐࢞ࣥ⥺ศᯒ

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JAEA-Review 2013-040ἲ࡟ࡼࡿ⎔ቃヨᩱ㺃ᆅ⌫໬Ꮫⓗヨᩱࡢከඖ⣲ศ

Workshop on Research Reactor Utilization, Vietnam,ᯒࠊᯇᑿᇶஅ࣭ᑠ㇋ᕝ຾ぢ࣭ㅖ⏫኱ᆅࠊཎᏊຊ

(October 2008)ᶵᵓ᪋タ฼⏝୍⯡ඹྠ◊✲ᡂᯝሗ࿌఍ (2008 ᖺ

28. ᖸ₲ᗏ㉁࡟࠾ࡅࡿ㓟໬㑏ඖ㟁఩࡜ඖ⣲ࡢᣲື8 ᭶)࡟㛵ࡍࡿ◊✲ࠊཎ┤ᶞ࣭ᑠ㇋ᕝ຾ぢ࣭ᯇᑿᇶஅࠊ

18. ᖸ₲࠾ࡼࡧ㐠Ἑࡢᗏ㉁࣭㛫㝽Ỉ୰ࡢඖ⣲ศᯒ᪥ᮏᆅ⌫໬Ꮫ఍ᖺ఍ (2009 ᖺ 9 ᭶)࡟ࡼࡿ⎔ቃホ౯ࠊ㛗㇂ᕝ⠜࣭⏣୰⨾✑࣭ᯇᑿᇶ

29. 㑏ඖⓗ⎔ቃୗ࡟࠾ࡅࡿᮾி‴ᗏ㉁࡟ྵࡲࢀࡿ

அࠊ᪥ᮏศᯒ໬Ꮫ఍➨ 57 ᖺ఍ (2008 ᖺ 9 ᭶)ඖ⣲ࡢ໬Ꮫ≧ែࠊཎ┤ᶞ࣭ᑠ㇋ᕝ຾ぢ࣭ᯇᑿᇶ

19. ᖸ₲ᗏ㉁୰ࡢඖ⣲ᆶ┤ศᕸ࡬ࡢ୺ᡂศศᯒࡢ

அࠊ➨ 53 ᅇᨺᑕ໬Ꮫウㄽ఍ (2009 ᪥ᮏᨺᑕ໬Ꮫ

㐺ᛂ࡟ࡼࡿ⎔ቃኚືࡢホ౯ἲࡢ᳨ウࠊㅖ⏫኱఍ᖺ఍) (2009 ᖺ 9 ᭶)ᆅ࣭ᯇᑿᇶஅࠊ᪥ᮏᆅ⌫໬Ꮫ఍ᖺ఍ (2008 ᖺ 9

30. 㞷ị୰ࡢࢲࢫࢺ⢏Ꮚ࡟ྵࡲࢀࡿேⅭ㉳※≀㉁᭶)ẚࡢ᥎ᐃࠊᑠ㇋ᕝ຾ぢ࣭ᯇᑿᇶஅ࣭኱ᓥ┿⃈࣭

20. ᅵተࡢ㓟୰࿴⬟࡬ᙳ㡪ࢆ୚࠼ࡿ஺᥮ᛶ Ca ࢖

⸨ᬸ㍜࣭ᮌᮧᩔ࣭ᑠἨග⏕ࠊ➨ 53 ᅇᨺᑕ໬Ꮫウ࢜ࣥࡢ໬Ꮫᙧែࠊᒣࣀ஭ಇ࣭ᑠ㇋ᕝ຾ぢ࣭ᯇᑿㄽ఍ (2009 ᪥ᮏᨺᑕ໬Ꮫ఍ᖺ఍) (2009 ᖺ 9 ᭶)ᇶஅࠊ᪥ᮏᆅ⌫໬Ꮫ఍ᖺ఍ (2008 ᖺ 9 ᭶)

31. Neutron activation analysis of marine sediment21. 㓟ᛶ㞵⿕ᐖࡀぢࡽࢀࡿᆅᇦ࡟࠾ࡅࡿᅵተࡢඖ

samples for environmental monitoring, M. Matsuo,⣲ศᕸ࡜㓟୰࿴⬟࡜ࡢ㛵㐃ᛶࠊ㧗ᶫ㯞Ꮚ࣭ᑠ㇋

FNCA 2009 Workshop on Research Reactorᕝ຾ぢ࣭ᯇᑿᇶஅࠊ᪥ᮏᆅ⌫໬Ꮫ఍ᖺ఍ (2008

Utilization, Hachinohe, (September 2009)ᖺ 9 ᭶)

32. Application of instrumental neutron activation

22. ◲㓟㑏ඖ࡜ᰤ㣴ሷ࠿ࡽぢࡓ㒔ᕷἙᕝࡢ⎔ቃホ

analysis to solid environmental and geochemical౯ࠊཎ┤ᶞ࣭ᑠ㇋ᕝ຾ぢ࣭ᯇᑿᇶஅࠊ᪥ᮏᆅ⌫samples for environmental monitoring, M. Matsuo,໬Ꮫ఍ᖺ఍ (2008 ᖺ 9 ᭶)

Invited

230

talk

in

Bangladesh

AtomicEnergy23. 㐣๫ Th ࡟ࡼࡾᖺ௦Ỵᐃࡉࢀࡓ㐲ὒᛶᾏὒሁ

Commission, Bangladesh, (March 2010)✚≀⾲ᒙ࡟࠾ࡅࡿ Aragonite-Calcite ┦㌿⛣ࠊᑠ㇋

33. ሁ✚≀ࢆ⏝࠸ࡓ㐣ཤ 30 ᖺ㛫ࡢᮾி‴ᖥᙇἈ

ᕝ຾ぢ࣭㔠஭ ㇏࣭బ㔝᭷ྖ࣭ᯇᑿᇶஅࠊ➨ 52

࡟࠾ࡅࡿ㈋㓟⣲Ỉሢࡢホ౯ࠊᑠ㇋ᕝ຾ぢ࣭㔠஭ᅇᨺᑕ໬Ꮫウㄽ఍ (2008 ᪥ᮏᨺᑕ໬Ꮫ఍ᖺ఍)㇏࣭ᯇᑿᇶஅࠊ᪥ᮏᆅ⌫໬Ꮫ఍ᖺ఍ (2010 ᖺ 9(2008 ᖺ 9 ᭶)

᭶)

24. ᨺᑕ໬ศᯒἲࢆ⏝࠸ࡓᖸ₲ࡢኚ㑄࡜ᗏ㉁୰ࡢ

34. ᶵჾ୰ᛶᏊᨺᑕ໬ศᯒἲ࡜ከ㔜༶Ⓨ࣐࢞ࣥ⥺ඖ⣲ᆶ┤ศᕸࡢ㛵㐃ᛶࡢ᳨ウࠊㅖ⏫኱ᆅ࣭ᯇᑿ

ศᯒἲ࡟ࡼࡿ⎔ቃヨᩱࡢከඖ⣲ศᯒࠊᯇᑿᇶ

ᇶஅࠊ➨ 52 ᅇᨺᑕ໬Ꮫウㄽ఍ (2008 ᪥ᮏᨺᑕ໬

அ࣭ᑠ㇋ᕝ຾ぢ࣭⸨ᬸ㍜࣭ᮧୖᖾᘯ࣭ྂ㧗࿴⚞࣭Ꮫ఍ᖺ఍) (2008 ᖺ 9 ᭶)ᮌᮧᩔ࣭኱ᓥ┿⃈࣭ᑠἨග⏕ࠊ➨ 54 ᅇᨺᑕ໬Ꮫ

25. 㓟୰࿴⬟ࡢほⅬ࠿ࡽぢࡓᅵተ࡟࠾ࡅࡿ Ca ࡢウㄽ఍ (2010 ᪥ᮏᨺᑕ໬Ꮫ఍ᖺ఍) (2010 ᖺ 9 ᭶)྾╔ᙧែࡢศᯒࠊᒣࣀ஭ಇ࣭ᑠ㇋ᕝ຾ぢ࣭ᯇᑿ

35. 㞷ị୰ࡢ⢏Ꮚ≧≀㉁ࢆ⏝࠸ࡓ኱Ẽ⎔ቃ࡟ᑐࡍᇶஅࠊ➨ 52 ᅇᨺᑕ໬Ꮫウㄽ఍ (2008 ᪥ᮏᨺᑕ໬

ࡿேⅭⓗᙳ㡪ࡢホ౯ࠊ⸨஭ᨻග࣭ᑠ㇋ᕝ຾ぢ࣭ᯇᏛ఍ᖺ఍) (2008 ᖺ 9 ᭶)ᑿᇶஅ࣭⸨ᬸ㍜࣭ᮧୖᖾᘯ࣭ྂ㧗࿴⚞࣭ᮌᮧᩔ࣭

26. ᗏ㉁࣭㛫㝽Ỉ୰ࡢ㕲ࡢᣲື࡟ࡼࡿᖸ₲ࡢί໬኱ᓥ┿⃈࣭ᑠἨග⏕ࠊ➨ 54 ᅇᨺᑕ໬Ꮫウㄽ఍ᶵ⬟࡟㛵ࡍࡿ◊✲ࠊ㛗㇂ᕝ⠜࣭⏣୰⨾✑࣭ᯇᑿ(2010 ᪥ᮏᨺᑕ໬Ꮫ఍ᖺ఍) (2010 ᖺ 9 ᭶)ᇶஅࠊ➨㸳ᅇⲈᇛᆅ༊ศᯒᢏ⾡஺ὶ఍ (2008 ᖺ

36. Neutron activation analysis of marine sediment

10 ᭶)

samples for environmental monitoring, M. Matsuo,

27. Monitoring of environmental contamination and

FNCA 2010environmental changes, M. Matsuo, FNCA 2008

Utilization, China, (September 2010)

Workshopon

Research

Reactor3-5
㻤㻜- 201 -

JAEA-Review 2013-040

3-6
Ź ħŗå%ġ;^WĿ÷
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JRR-3 %ąťĶ Pn-3 6Ĝŉŗå 35~60

&SiMgFeCa

mg 6ĈĉV[:F]^ŋ#jů#¼10Ü25452%|ĺ%Mg

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ņ

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IŹħ%gÖ|ĺ PGA %H`E%ŵ''ca

5,%ĽƂĦ25

ĮfÑ±ē½%Ĺ 10~15 ÌĿč¶6 300 ĮŉðŹħf% Na, Mg 6¶ű4
/#JB-1 6ĄŢÿĎŗå

Ĝ

ó©&PGA 6ĜA^JZ8IŹħ6÷4ź%52 2 |ĺ%caņ#ŘĻ#ûœľø6©4

ƊƇľø

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Allende % Na

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3 ÇČĨĲçŕ: JRR-3ŌŁ: PGAĨĲŰ: ³µ²÷²
㻤㻝

- 202 -

JAEA-Review 2013-040

3ðŹħ6 PGA

ŀ3ţč¶ľø6Ŋ 1 #ĬNa  8 

 ·Ƃ%Ž0Ť)Mg  10 %Ġ"4ġ;^WĿ#»¶űx6

INAA %eæ÷INAA Ĝŗå& PGA

55ŒĵÆ¦x

ÿĎyÃ6Ć/,č¶ŗåYM9iųfĸĩ¦a#ß®x#»4Ĥ»x0ĬNa % 472.202 keVÌ%aŬ6Ĝ¶űx6Ŋ 2 #Ĭ%ġ;^WĿ&U9ĺĝõ%O`>

PGA %x&472keV  Na 62828 keV  Mg 6¶ů"4¢

ƈ& 450 keV

2 500 keV %ķ¡%;^WĿCT>ű0%4ŊƉê2

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Allende ĄŢ0%4JB-1

Mg

f% Na

B & Allende f%ñű13ƃeń%P`>&´#ů"4% 472 keV % Na P`6¶űx%ĄŢ6Ĭ0%4ŗå#1&q0%%%ķ¡& Na,

Mg

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Allende &¯Ë4č¶ðƄŹħ6.ƅ%|ĺ÷#»ĤōĢ#Ĝ
õ4

I\4%ž§#& 2828 keV % Mg %ġ;

Mg %ûŶĞ

6ĄŢ0%4ûŶĞx%Œĵ

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Allende f% Mg ñű6ĄŢ¯Ë

INAA %÷Ņ PGA & Mg &Áħf%m%gŎ|ĺ#Ą)ÕÈ

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4

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50ß®x4

Mg %PGA"cī¶3587 keV %jó%;^WĿ#14x6Ÿ

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Ĵ%ěĝ

&ÓìÞùÛÄŗÁħf% Mg %¶å%ò÷#& PGA %żÅ#øĢ#Ĝõ

¯Ë

4

ľŜ54Na %¶űxƋPGA

INAA

6Ĭ0%4¢ 4 &ÓìÞù#1

5ŗå6÷4/%÷C<`X6Ĭ
0%4IPAA &Āű±á½÷ĨĲçŕ: JRR-3ŌŁ: PGAĨĲŰ: ³µ²÷²- 203 -

3-6

㻤㻞

JAEA-Review 2013-040

RPAA &á½²Ģű±á½÷6Ĭ%

3. Y. Karouji and M. Ebihara (2008) Reliability ofC<`XÚ5'÷

prompt gamma-ray analysis for the determination of Na

4ŗåB8D#14

30 ıÈ%|ĺ%¶űx6Ć/4&¹ë4

and Mg in rock samples. Anal. Sci. 24, 659-663.
4. Y. Yamaguchi, A. A. Barrat, R. C. Greenwood, N.

ĨĲÖøƄġŊŜäƅ

Shirai, C. Okamato, T. Setoyanagi, M. Ebihara, I. A.

ƄĨĲ#òŵƄ2007~2009ƅ#© PGA 6

Franchi and M. Bohn (2009) Crustal partial metting onĜÍ25ĨĲÖøƅ

Vesta: Evidence from highly metamorphosed eucrites.

1. S. Yamazaki, Y. Oura and M. Ebihara (2007)

Geochim. Cosmochim. Acta 73, 7162-7182.

Determination of hydrogen in geological rock samples

5. N. Shirai and M. Ebihara (2009) Chemical

by neutron-induced prompt gamma-ray analysis. J.

characteristics of lherzolitic shergottites Yamato 000097

Radioanal. Nucl. Chem. 272, 363-369.

and the magmatism on Mars inferred from chemical

2. T. Nakamoto, Y. Oura and M. Ebihara (2007)

compositions of shergottites. Polar Science 3, 117-133

Comparative study of activtion analyses for thedetermination of trace halogens in geological andcosmochemical samples. Anal. Sc. 23, 1113-1119.

ĨĲçŕ: JRR-3ŌŁ: PGAĨĲŰ: ³µ²÷²- 204 -

3-6

㻤㻟

JAEA-Review 2013-040

ĨĲçŕ: JRR-3ŌŁ: PGAĨĲŰ: ³µ²÷²

3-6- 205 -

㻤㻠

JAEA-Review 2013-040

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ᓥᘼⅆᒣᒾࡢ࣐ࢢ࣐ᡂᅉࡣྂࡃ࡚᪂ࡋ࠸ၥ㢟ࡍࡿᡂศ࡟ࡼࡿởᰁࡀᴟࡵ࡚኱ࡁ࠸ࡇ࡜࡞࡝࠿

࡛࠶ࡿࠋࡑࡢ࣐ࢢ࣐ࢯ࣮ࢫࡢ」㞧ࡉࡀࠊ༢⣧࡞ࣔࡽࠊࢫࣛࣈ⼥ゎ࡟ࡼࡿ࣐ࢢ࣐ᡂᅉㄽࡀ㆟ㄽࡉࢀࡿࢹࣝ໬ࢆጉࡆࡿࠋ࡞࠿࡛ࡶᓥᘼ࣐ࢢ࣐࡟ᅛ᭷ࡢ࣐

ࡼ࠺࡟࡞ࡗࡓࠋࡑࡋ࡚℩ᡞෆⅆᒣᒾ㢮ࡢ⋞Ṋᒾ࠾ࢢ࣐ࢯ࣮ࢫ➃ᡂศ࡜ࡋ࡚ỿࡳ㎸ࡴࢫࣛࣈ࡟⏤᮶ࡼࡧࠊ㧗 0J Ᏻᒣᒾ࡟ࡘ࠸࡚ࡣࠊࢫࣛࣈ⾲ᒙ㒊ࡢࡍࡿࡶࡢࡀ࠶ࡿࠋࢫࣛࣈ⏤᮶ᡂศࢆ࣐ࣥࢺ࢙ࣝ࢘

ሁ✚≀ࢆ୺࡜ࡍࡿ⼥ゎ࣓ࣝࢺ࡜࣐ࣥࢺ࢙ࣝ࢘ࢵ

ࢵࢪ࡟ࡶࡓࡽࡍ፹యࡣࠊỈࢆ୰ᚰ࡜ࡍࡿὶయ┦࡛ࢪࡢ཯ᛂ࡟ࡼࡿ࣐ࢢ࣐ᡂᅉࡀᥦ᱌ࡉࢀࠊከ✀ࡢᾮ࠶ࡿࡢ࠿ࠊࢣ࢖㓟ሷ࣓ࣝࢺ࡛࠶ࡿࡢ࠿࡟ࡘ࠸࡚ࡣ

┦⃰㞟ඖ⣲ࡸྠ఩య✀ࢆྲྀࡾධࢀࡓࠊࡑࡢ࣐ࢢ࣐

᫇࠿ࡽከࡃࡢ㆟ㄽࡀ࠶ࡿࡀࠊỿࡳ㎸ࡴࢫࣛࣈࡢ

ᡂᅉㄽ࡟ἢࡗࡓࣔࢹࣝࡀ᳨ウࡉࢀ࡚࠸ࡿ

ᗘᵓ㐀࡟ࡼࡾࠊ୧⪅ࡢ࠸ࡎࢀࡀ୺య࡜࡞ࡿ࠿ࡀỴ

㸦7DWVXPL ࡞࡝㸧ࠋࡲࡿࡶࡢ࡜⪃࠼ࡽࢀ࡚࠸ࡿࠋ୍⯡࡟ࠊᙧᡂᖺ௦ࡢ ࡇࡢࡼ࠺࡞ࢫࣛࣈ⏤᮶ᡂศࡢホ౯ࡣࠊ࠸ࢃࡺࡿ

JRR-3Mࠊ༶ⓎȚ⥺ศᯒ⿦⨨ࠊᆅ⌫໬Ꮫ㻤㻡

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JAEA-Review 2013-040ᾮ┦⃰㞟ඖ⣲㸦LQFRPSDWLEOHHOHPHQW㸧ࡢྵ᭷㔞࡟ࡼࡿ࣍࢘⣲⃰ᗘࢆࣄࢫࢺࢢ࣒ࣛ࡟♧ࡋࡓ㸦ᅗ 㸧ࠋࡸ✀ࠎࡢྠ఩య⤌ᡂ㸦6Uࠊ1Gࠊ3Eࠊ+I ➼㸧࡟ᇶ࡙࠸࡚⾜ࢃࢀࡿࡇ࡜ࡀከ࠸ࠋࡲࡓࠊඖ⣲✀࡟ࡼࡾὶయ┦ࡸࠊࢣ࢖㓟ሷ࣓ࣝࢺࡢ୰࡛ࡢᣲືࡀ␗࡞ࡿࡢ
࡛ࠊᵝࠎ࡞ඖ⣲✀ࠊ࠶ࡿ࠸ࡣྠ఩య✀ࡢศᯒ࡟ࡼ
ࡾᚓࡽࢀࡿ᝟ሗࢆ⥲ྜⓗ࡟᳨ウࡍࡿࡇ࡜ࡀᮃࡲࡋ࠸ࠋ ℩ᡞෆⅆᒣᒾ࡟ࡘ࠸࡚ࡣ୺࡟⋞Ṋᒾཬࡧ +0$ ࡟ࡘ࠸࡚ከ✀ࡢᾮ┦⃰㞟ඖ⣲ࡸྠ఩య✀ࢆྲྀࡾධᅗ ℩ᡞෆⅆᒣᒾࡢ࣍࢘⣲ྵ᭷㔞ࢀࡓ࣐ࢢ࣐ᡂᅉㄽࣔࢹࣝࡀ᳨ウࡉࢀ࡚࠸ࡿࠋࡋ࠿

ࡋࡇࢀࡲ࡛ࠊ࣍࢘⣲࡟ࡘ࠸࡚ࡢศᯒࡢሗ࿌ࡣ࡯࡜ᅗ  ࡟♧ࡋࡓࡢࡣࠊ+0$ ࠾ࡼࡧ⋞Ṋᒾࡢ 7K/Dࠊࢇ࡝↓࠸ࠋ࣍࢘⣲ࡣࠊỿࡳ㎸ࡴࢫࣛࣈୖࡢሁ✚≀%/Dࠊ3E&H ẚࡢᓥᘼᘏ㛗᪉ྥኚ໬࡛࠶ࡿࠋࡇࢀ

࡟ࡣ㇏ᐩ࡟ྵࡲࢀࠊࢫࣛࣈ⏤᮶ᡂศࡢホ౯࡟ࡣࠊࡽࡢඖ⣲ẚࡣࢫࣛࣈୖࡢሁ✚≀⏤᮶ᡂศࡢῧຍ㔜せ࡞ඖ⣲✀ࡢ୍ࡘ࡛࠶ࡿࠋ✀ࠎࡢᆅ⌫໬Ꮫⓗࢹ࡟ࡼࡾୖ᪼ࡍࡿࡶࡢ࡛࠶ࡿࠋࡇࢀࡽࡢẚࡣྛᆅᇦ࣮ࢱࡢ⵳✚ࡉࢀ࡚࠸ࡿࠊ℩ᡞෆⅆᒣᒾ㢮ࡢ⋞Ṋᒾෆ࡛ࡢࣂ࢚࣮ࣜࢩࣙࣥࡀ኱ࡁࡃࠊᓥᘼᘏ㛗᪉ྥ࡛࠾ࡼࡧࠊ+0$ ࡟ࡘ࠸࡚ࡢศᯒࢆ⾜࡞࠺ࡇ࡜࡛ࠊࢫ

ࡢ⣔⤫ⓗ࡞ኚ໬ࡣぢࡽࢀ࡞࠸ࠋࡇࢀࡽࡢඖ⣲ẚࡢࣛࣈ⏤᮶ᡂศࢆ⥲ྜⓗ࡟᳨ウࡍࡿࡇ࡜ࡀ࡛ࡁࡿ

ኚ໬ࢆࢫࣛࣈ⏤᮶ᡂศࡢῧຍ㔞ࡢᕪ㐪࡛ㄝ᫂ࡍ ࡞࠾ࠊᮏ◊✲࡟⏝࠸ࡓヨᩱ࡟ࡘ࠸࡚ࡣ༶ⓎȚ⥺ࡿࡓࡵ࡟ࠊ༢⣧࡞ΰྜࣔࢹࣝࢆ⪃ᐹࡋࡓࠋ

ศᯒ࡟ࡼࡿ࣍࢘⣲ࡢࡳ࡞ࡽࡎ✀ࠎࡢᚤ㔞ඖ⣲⃰ᗘࡢศᯒࡶేࡏ࡚⾜ࡗ࡚࠸ࡿࠋ㔝እㄪᰝࡸヨᩱࡢධᡭ࠾ࡼࡧࠊ୰ᛶᏊᨺᑕ໬ศᯒ௨እࡢศᯒ࡟ࡘ࠸
࡚ࡣࠊ⏘ᴗᢏ⾡⥲ྜ◊✲ᡤࡢゅ஭ᮅ᫛Ặ࠾ࡼࡧࠊᮾி኱Ꮫᆅ㟈◊✲ᡤࡢᢡᶫ⿱஧Ặ࡜ࡢඹྠ◊✲࡜ࡋ࡚⾜ࢃࢀࡓࡶࡢ࡛࠶ࡿࠋࡲࡓ⺯ග㹖⥺ศᯒ࠾ࡼࡧࠊ,&306 ศᯒࡣᮾி኱Ꮫᆅ㟈◊✲ᡤࡢඹྠ฼
⏝ࣉࣟࢢ࣒ࣛࡢ᥼ຓࢆཷࡅ࡚⾜ࡗࡓࡶࡢ࡛࠶ࡿࠋ ヨᩱࡣࠊ஑ᕞ㹼⣖ఀ༙ᓥす㒊ࡢ℩ᡞෆⅆᒣᒾศᕸᇦࡢྛᆅ࠿ࡽࠊ+0$ ࠾ࡼࡧࠊ⋞Ṋᒾࢆ཰㞟ࡋࡓࠋࡉࡽ࡟ࡑࢀࡽ࡟క࠺ࠊὶ⣠ᒾ࣭ࢹ࢖ࢧ࢖ࢺࡶ࠶ࢃ
ࡏ࡚᥇ྲྀࡋࡓࠋิᣲࡍࡿ࡜ࠊ኱ศ┴ࡢ኱㔝ⅆᒣᒾ㢮ࠊឡ፾┴ࡢ㧗⦖༙ᓥ࿘㎶ࠊ㤶ᕝ┴ࡢㆭᒱᖹ㔝࠾ࡼࡧᑠ㇋ᓥࠊ኱㜰ᆅᇦ࠾ࡼࡧ⣖ఀ༙ᓥእᖏᇦࡢᇰ

ᅗ +0$ ࠾ࡼࡧ⋞Ṋᒾࡢ 7K/Dࠊ%/Dࠊ3E&H ẚࡢ
DORQJDUFYDULDWLRQ⏣ᆅᇦࡢ +0$ ࡛࠶ࡿࠋࡇࢀࡽࡢヨᩱࢆ࣓ࣀ࢘ங㖊࡛⣽⢊໬ࡋࡓᚋࠊPJ ⛬ᗘࡢ⢊ᮎࢆຍᅽᩚᙧࡋ

࡚సᡂࡋࡓ࣌ࣞࢵࢺࢆ )(3 ࣇ࢕࣒ࣝ࡟⼥ᑒࡋࡓࡶ ሁ✚≀ࡢඖ⣲⃰ᗘࡣ 3ODQNDQG/DQJPXLU  ࡢࢆ࠾ࡼࡧ6DQRHWDO  ࡟ࡼࡾࠊኚ㉁ᾏὒᆅ

ᐃヨᩱ࡜ࡋࡓࠋ

 +0$ ࡢ࣍࢘⣲ྵ᭷㔞ࡣ ࠥSSP ࡢ⠊ᅖ࡟࠶ࡾẆ㸦$2&㸧ࡢࡑࢀࡣ 6LQJHUHWDO  ࢆ⏝࠸ᖹᆒ sSSP Q  ࡛࠶ࡗࡓࠋ⋞Ṋᒾ࠾ࡓࠋሁ✚≀ཬࡧ $2& ⏤᮶ࡢὶయ࡟ࡘ࠸࡚ࡢඖ⣲ࡢࡼࡧࢹ࢖ࢧ࢖ࢺ࣭ὶ⣠ᒾࡢ࣍࢘⣲ྵ᭷㔞ࡣࡑࢀࡒ⛣ືᗘࡣ .RJLVRHWDO  ࠾ࡼࡧ $L]DZDHWࢀ ࠥSSPࠊࠥSSP ࡛࠶ࡗࡓࠋᒾ▼✀ู
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JAEA-Review 2013-040

DO  ࡢ್ࢆ⏝࠸ࡓࠋ࣍࢘⣲௨እࡢඖ⣲࡟ࡘྥࡢഴྥࢆᣢࡓ࡞࠸ࡇ࡜࠿ࡽࠊఱࡀࠊሁ✚≀⏤᮶࠸࡚ࡢሁ✚≀⼥ゎ࡟㝿ࡋ࡚ࡢ EXON.Gࡣ -RKQVRQᡂศࡢከᐻࢆỴࡵࡿせᅉ࡛࠶ࡿࡢ࠿࡟ࡘ࠸࡚ࡶ

DQG3ODQN  ࡢ್ࢆ⏝࠸ࡓࠋ࣍࢘⣲ࡢ EXON.G⪃ᐹࢆ㐍ࡵࡓ࠸ࠋ

ࡣ㐺ษ࡞ᐇ㦂್ࡀ࡞࠸ࡢ࡛ࠊ ࢆ௬ᐃࡋࡓࠋࡲ

ࡓࠊࢫࣛࣈ⏤᮶ᡂศῧຍ๓ࡢ࣐ࣥࢺ࢙ࣝ࢘ࢵࢪ࠿ Ⲩᕝୖὶᇦࡢ࣍࢘⣲ࡢᆅ⌫໬Ꮫᅗࢇࡽࢇᒾࡢඖ⣲ẚ࡟ࡘ࠸࡚ࡣࠊ℩ᡞෆⅆᒣᒾࡢ⋞ ᆅ⌫໬ᏛᅗࡣᆅẆ⾲ᒙ࡟࠾ࡅࡿඖ⣲ࡢ⃰ᗘศṊᒾࡢ୰࡛᭱ࡶᯤῬⓗ࡞ࡶࡢࢆ⏝࠸ࠊࡑࢀ࡜ୖグᕸࢆ♧ࡍࡶࡢ࡛ࠊ⮬↛⎔ቃࡢ໬Ꮫⓗࣂࢵࢡࢢࣛ࢘

ࡢ௬ᐃࡢୗ࡛ồࡵࡓሁ✚≀࣓ࣝࢺࡢඖ⣲ẚࡢ㛫ࣥࢻࡢ᝟ሗࢆᚓࡿࡇ࡜ࡀ࡛ࡁࠊேⅭⓗ⎔ቃኚ໬ࢆࡢ  ᡂศΰྜࢆ⪃࠼ࡓࠋࡍࡿ࡜ࠊᅗ  ࡟♧ࡍࡼ࠺ホ౯ࡍࡿୖ࡛ࡢᣦᶆ࡜ࡶ࡞ࡿࠋ❧ṇ኱Ꮫᆅ⌫⎔ቃ

࡟ࠊ7K/Dࠊ%/Dࠊ3E&H ẚ࡟ࡘ࠸࡚ࠊᯤῬࡋࡓ⋞⛉Ꮫ㒊Ᏹᐂᆅ⌫໬Ꮫ◊✲ᐊ࡛ࡣࠊ ᖺᗘ࠿ࡽᇸ

Ṋᒾ࡟┦ᙜࡍࡿ࣐ࣥࢺࣝ࡟ ⛬ᗘࡲ࡛ࡢࠊሁ✚⋢┴す㒊࡟఩⨨ࡍࡿ⛛∗ᆅᇦࠊⲨᕝୖὶᇦࡢᆅ⌫≀࣓ࣝࢺࡢῧຍ࡟ࡼࡾࠊ+0$ ࡟ぢࡽࢀࡿࠊ7K/Dࠊ໬Ꮫᅗࢆసᡂࡋ࡚ࡁࡓࠋࡇࢀࡲ࡛ࡢ⤖ᯝࡢከࡃࡣ

%/Dࠊ3E&H ẚࡢࣂ࢚࣮ࣜࢩࣙࣥࡣⰋࡃㄝ᫂ࡉࢀ

⫼ᬒࡢᆅ㉁ࢆࡼࡃ཯ᫎࡋ࡚࠸ࡿࡇ࡜ࡀࢃ࠿ࡗࡓࠋ

ࡿࠋ㹼 ᖺᗘࡣྜィ  ࣨᡤࡢἙᕝሁ✚≀㸦◁㸧ࢆ᥇ྲྀࡋࠊ-550 ⅔ࡢ༶ⓎȚ⥺ศᯒ⿦⨨࡛࣍࢘⣲ࡢศᯒࢆ⾜ࡗࡓࠋ  ᖺᗘࡲ࡛ࡢ⤖ᯝࢆྵࡵࡓ࣍࢘⣲ࡢᆅ⌫໬Ꮫᅗࢆᅗ  ࡟♧ࡋࡓࠋᆅ㉁ᅗ㸦ᅗ 㸧࡜ᑐẚࡍࡿ࡜ⰼᓵᒾᆅᇦ࡛࣍࢘⣲⃰ᗘࡀ㧗࠸ࡇ࡜ࡀࢃ࠿ࡿࠋ
ⷧᕝὶᇦ࡟ࡶ࣍࢘⣲⃰ᗘࡀ㧗࠸ᆅⅬࡀ࠶ࡿࡀࠊࡑ
ࡢ⌮⏤ࡣࡲࡔ᫂ࡽ࠿࡟࡞ࡗ࡚࠸࡞࠸ࠋ௒ᚋࠕఱᨾ
࠿㸽ࠖࢆ᫂ࡽ࠿࡟ࡍࡿࡇ࡜ࡶᚲせ࡛࠶ࡿࠋ

ᅗ Ⲩᕝୖὶᇦࡢ࣍࢘⣲ࡢᆅ⌫໬Ꮫᅗᅗ 7K/Dࠊ%/Dࠊ3E&H ẚ࡟ࡘ࠸࡚ሁ✚≀࣓ࣝࢺ࡜⋞Ṋᒾ㸦࣐ࣥࢺ࢙ࣝ࢘ࢵࢪࡢึᮇ್࡜௬ᐃ㸧ࡢ  ᡂศΰྜ࡜ +0$ ࡢ⤌ᡂࡢẚ㍑ࠋ ௒ᚋࠊࡼࡾከࡃࡢᚤ㔞ඖ⣲⤌ᡂࡶྵࡵ࡚ࠊࣔࢹ
ࣝࡢጇᙜᛶࢆ᳨ウࡋࡓ࠸ࠋࡉࡽ࡟ࠊࡇࡇ࡛ぢࡽࢀᅗ Ⲩᕝୖὶᇦࡢᆅ㉁ᅗ࡜ヨᩱ᥇ྲྀᆅⅬࡿࠊඖ⣲ẚࡢᗈ࠸ࣂ࢚࣮ࣜࢩࣙࣥࡀࠊᓥᘼᶓ᩿᪉
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JAEA-Review 2013-040

ㅰ㎡ᮏ◊✲ࡢᐇ᪋࡟ᙜࡓࡾࠊཎᏊຊᶵᵓࡢᯇỤ⚽᫂༤ኈ࡜㛵㇂♸஧Ặ࡟኱ኚ࠾ୡヰ࡟࡞ࡾࡲࡋࡓࠋࡲ
ࡓࠊ኱Ꮫ㛤ᨺ◊✲ᐊࡢࡳ࡞ࡉࡲ࡟ࡶ࠾ୡヰ࡟࡞ࡾࡲࡋࡓࠋグࡋ࡚ឤㅰ⏦ࡋୖࡆࡲࡍࠋ
ᡂᯝࡢබ⾲
᪂ṇ⿱ᑦ࣭ᢡᶫ⿱஧࣭ᖹ⏣኱஧࣭ࢼࣛࣥ࣍࣍ࢭ࣭
㛗㇂୰฼᫛࣭⚟ᒸᏕ᫛࣭బ㔝㈗ྖ࣭Ᏻ㛫஢ ࠕࢳࣜᘼ 6RXWKHUQ9ROFDQLF=RQH ࡢ➨ᅄ⣖ⅆᒣᒾࡢᚤ㔞ඖ⣲⤌ᡂࠖ᪥ᮏᆅ⌫ᝨᫍ⛉Ꮫ㐃ྜ  ᖺ኱఍
᪂⸨ᬛᏊ࣭⚟ᒸᏕ᫛㸦㸧ࠕⲨᕝୖὶ୰ὠᕝ࣭
Ἑཎἑᕝ࣭㉥ᖹᕝὶᇦࡢᆅ⌫໬Ꮫᅗࠖ ᖺᗘ᪥ᮏᆅ⌫໬Ꮫ఍➨  ᅇᖺ఍
᪂ṇ⿱ᑦ࣭ᢡᶫ⿱஧࣭ゅ஭ᮅ᫛࣭⚟ᒸᏕ᫛࣭㛗㇂୰฼᫛࣭బ㔝㈗ྖ  ࠕ℩ᡞෆⅆᒣᒾ㢮ࡢ࣍࢘⣲ྵ᭷㔞ࠖ᪥ᮏᆅ⌫ᝨᫍ⛉Ꮫ㐃ྜ  ᖺ኱఍᪂⸨ᬛᏊ࣭⚟ᒸᏕ᫛࣭㟷ᮌ࠿࠾ࡾ࣭▼ᮏග᠇㸦㸧ࠕ㧗⃰ᗘ 0Jࠊ&U ᆅⅬࡢⓎぢ࡜ 3E ேⅭởᰁࡢྍ⬟ᛶ㸫Ⲩᕝୖὶⷧᕝὶᇦࡢᆅ⌫໬Ꮫᅗࠖ
ᖺᗘ᪥ᮏᆅ⌫໬Ꮫ఍➨  ᅇᖺ఍⚟ᒸᏕ᫛࣭㟷ᮌ࠿࠾ࡾ࣭ᴋ㔝ⴥ⍠㤶㸦㸧ࠕἙᗋሁ✚≀ࡢ໬Ꮫศᯒ࡟ᇶ࡙ࡃᆅ⌫໬Ꮫᅗࡢస
ᡂ࣐ࢽࣗ࢔ࣝ࡜௒ᚋࡢᒎᮃࠖ❧ṇ኱Ꮫᆅ⌫⎔ቃ◊✲ࠊ➨  ྕࠊ
⚟ᒸᏕ᫛࣭㟷ᮌ࠿࠾ࡾ࣭ᴋ㔝ⴥ⍠㤶㸦㸧ࠕዟ⛛∗Ⲩᕝୖὶࡢᆅ⌫໬Ꮫᅗ㸫❧ṇ኱Ꮫ࡛ࡢᆅ
⌫໬Ꮫᅗసࡾࠖ᪥ᮏᝨᫍ⛉Ꮫ㐃ྜ  ᖺ኱఍










JRR-3Mࠊ༶ⓎȚ⥺ศᯒ⿦⨨ࠊᆅ⌫໬Ꮫ

3-7
㻤㻤

- 209 -

JAEA-Review 2013-040

3-8ࠕ▼⅊ᒾࡢ୰ᛶᏊᨺᑕ໬ศᯒ࢝ࣝࢧ࢖ࢺ⤖ᬗ᱁Ꮚ୰ࡢᏱᐂ⥺⏕ᡂ᰾✀ &O ࢆ⏝࠸ࡓᛂ⏝◊✲࡟ྥࡅ࡚ࠖ
3URPSW*DPPDUD\$QDO\VLVRI/LPHVWRQHIRUWKH,QLWLDO$SSOLFDWLRQRI,QVLWXSURGXFHG&RVPRJHQLF&OLQ&DOFLWHIRU4XDQWLI\LQJ(DUWK6XUIDFH3URFHVVHV⟃Ἴ኱Ꮫ኱Ꮫ㝔ᩘ⌮≀㉁⛉Ꮫ◊✲⛉໬Ꮫᑓᨷᮎᮌၨ௓
ி㒔኱Ꮫ㜵⅏◊✲ᡤᆅ┙⅏ᐖ◊✲㒊㛛ᒣᆅ⅏ᐖ⎔ቃศ㔝ᯇᅄ㞝㥽⟃Ἴ኱Ꮫ◊✲ᇶ┙⥲ྜࢭࣥࢱ࣮ᛂ⏝ຍ㏿ჾ㒊㛛➲බ࿴◊✲ࡢ┠ⓗ࡜ព⩏

ࡢⓎ㐩࡟ࡼࡗ࡚㸪㖔≀୰ࡢᏱᐂ⥺⏕ᡂ᰾✀ࡢ⃰ᗘᮏ◊✲࡛ࡣ㸪᪥ᮏิᓥ඲ᇦ࠿ࡽ᥇ྲྀࡋࡓ▼⅊ᒾࡀᐃ㔞࡛ࡁࡿࡼ࠺࡟࡞ࡾ㸪ᒾ▼⾲㠃ࡢ㛗ᮇⓗ๐๤ࡢඖ⣲ศᯒ㸪≉࡟ &D㸪%㸪6P㸪*G ࡢᐃ㔞ࢆ⾜࠺㸬㏿ᗘࢆ᥎ᐃࡍࡿࡇ࡜ࡀྍ⬟࡜࡞ࡗࡓ㸬ࡇࡢィ⟬࡟ࡇࢀ࡟ࡼࡾ▼⅊ᒾ୰࡛ࡢᏱᐂ⥺⏕ᡂ᰾✀ &O ࡢᖺ࠾࠸࡚ࡣ᰾✀ࡢ⏕ᡂ⋡࡜ࡑࡢ῝ᗘศᕸࡢ᝟ሗࡀ

㛫⏕ᡂ⋡ࢆỴᐃࡋ㸪ࡇࡢ᰾✀ࡢᏑᅾ⃰ᗘࢆ㸪ᆅ⾲ᚲせ୙ྍḞ࡛࠶ࡿ㸬ࣉࣟࢭࢫࡢᐃ㔞໬࡟㛵ࡍࡿ◊✲࡟ᛂ⏝ࡍࡿࡇ࡜㖔≀୰ࡢᏱᐂ⥺⏕ᡂ᰾✀ࡢ⏕ᡂ⋡ࡣ㸪ࡑࡢ㖔≀ࢆ᭱⤊ⓗ࡞┠ⓗ࡜ࡍࡿ㸬ࡀᏑᅾࡍࡿᆅⅬࡢ⦋ᗘ࡜ᶆ㧗ࡢ࡯࠿㸪㖔≀ࡢ໬Ꮫ▼⅊ᒾࡣᆅ⌫ࡢᆅ⾲㠃✚ࡢ⣙ 㸣ࢆ༨ࡵ㸪඲⌫⤌ᡂ㸪≉࡟Ᏹᐂ⥺࡟ࡼࡿ᰾཯ᛂࡢᶆⓗཎᏊ᰾㸦ࡓ࡟Ꮡᅾࡍࡿ஧㓟໬Ⅳ⣲ࡢ࠾ࡼࡑ 㸣ࢆᒾ▼ᅪ࡟

࡜࠼ࡤ 6L㸪&D㸪)H ࡞࡝㸧࠾ࡼࡧ୰ᛶᏊ྾཰᰾ࡢ

ᅛᐃࡍࡿᙺ๭ࢆᢸࡗ࡚࠸ࡿ㸬ࡑࢀࡺ࠼㸪㝆Ỉ࡟ࡼᏑᅾ㔞㸦%㸪*G㸪6P ࡞࡝㸧ࡢ㛵ᩘ࡛࠶ࡿ㸬࢝ࣝࢧࡿ▼⅊ᒾࡢ⁐ゎࡣ㸪ᆅ⌫つᶍࡢⅣ⣲ᚠ⎔࠾ࡼࡧࡑ࢖ࢺ࡟࠾ࡅࡿ &O ࡢ⏕ᡂࡢሙྜࡣ㸪୺࡜ࡋ࡚ &DࡢẼೃኚ໬࡜ࡢ┦஫స⏝㐣⛬ࢆ⌮ゎࡍࡿୖ࡛㔜ࡢ᰾◚○཯ᛂ࡟ࡼࡿࡀ㸪ࡇࡢ࡯࠿㸪&D ࡢ࣑࣮ࣗせ࡛࠶ࡿ㸬ࡲࡓ㸪ୡ⏺ྛᆅ࡟ศᕸࡍࡿⅣ㓟ሷᒾ≉࢜ࣥᤕ⋓㸪&O ࡢ୰ᛶᏊᤕ⋓࡞࡝ࡢ⏕ᡂࣉࣟࢭࢫ

᭷ࡢᆅᙧ㸦࢝ࣝࢫࢺ㸧ࡣ㸪Ẽೃᖏ࡟ࡼࡗ࡚ከᵝ࡞ࡀᐤ୚ࡋ࡚࠸ࡿ㸬᪤Ꮡࡢ࢟ࣕࣜࣈ࣮ࣞࢩࣙࣥ◊✲ᙧែࢆ࿊ࡋ࡚࠾ࡾ㸪ࡑࡢᡂᅉࢆ᥈ࡿࡇ࡜ࡣ㸪࢝ࣝ࡟ࡼࡾ㸪࢝ࣝࢧ࢖ࢺ࡟࠾ࡅࡿ &O ࡢ⏕ᡂ⋡ࡣ⦋ࢫࢺᆅᙧᏛୖࡢ㔜せ࡞ㄢ㢟ࡢ୍ࡘ࡛࠶ࡿ㸬ᗘ࣭ᶆ㧗㸪ヨᩱࡢ໬Ꮫ⤌ᡂࡢࣃ࣓࣮ࣛࢱࡢ್ࡉ࠼

㛗ᮇ᫬㛫ࢫࢣ࣮࡛ࣝࡢ▼⅊ᒾࡢ๐๤㏿ᗘࡣ㸪ࡇᚓࡽࢀࢀࡤ㸪༶ᗙ࡟ィ⟬ࡍࡿࡇ࡜ࡀྍ⬟࡜࡞ࡗ࡚࠺ࡋࡓㄢ㢟ࢆ┤᥋ⓗ࡟ゎỴࡋ࠺ࡿ㔜せ࡞᝟ሗ࡜࠸ࡿ㸬༶Ⓨ࣐࢞ࣥ⥺ศᯒ㸦3*$3URPSW*DPPDUD\࡞ࡿ㸬ᮏ◊✲࡛ࡣ▼⅊ᒾࡢ୺せᵓᡂ㖔≀࡛࠶ࡿ࢝$QDO\VLV㸧ࢆ⏝࠸ࢀࡤ㸪࢝ࣝࢧ࢖ࢺࡢ୺せᵓᡂඖࣝࢧ࢖ࢺ㸦&D&2㸧ࡢ⤖ᬗ᱁Ꮚ୰࡟⏕ᡂࡍࡿᏱᐂ⥺⣲ࡢࡳ࡞ࡽࡎ୰ᛶᏊ྾཰᰾ࡢᏑᅾ㔞ࡶ⡆౽࡟ᐃ⏕ᡂ᰾✀ &O ࢆ⏝࠸࡚㸪ள⇕ᖏ࠿ࡽளᐮᖏࡲ࡛ࡢ

㔞ࡍࡿࡇ࡜ࡀ࡛ࡁࡿ㸬ࡇࢀࡀඹྠ฼⏝⏦ㄳ࡟⮳ࡗẼೃ⎔ቃ࡟࠾ࡅࡿ▼⅊ᒾࡢ๐๤㏿ᗘࡢ᥎ᐃࢆヨࡓ⤒⦋࡛࠶ࡿ㸬

ࡳࡿ㸬





ヨᩱࡢ᥇ྲྀ࡜ศᯒ㸪࠾ࡼࡧࡑࡢᡂᯝ

ᡭἲࡢཎ⌮࡜ཎᏊ⅔฼⏝ࡢᚲせᛶᮏ◊✲࡛ࡣ㸪᪥ᮏิᓥྛᆅࡢⅣ㓟ሷᒾࡢศᕸࡍ

୍⯡࡟ᆅ⾲㏆ഐࡢ㖔≀୰࡛ࡣ㸪஧ḟᏱᐂ⥺ࡢ↷ࡿᆅᇦ࡟࠾࠸࡚㸪ᆅ⾲㠃࡟㟢ฟࡋࡓᒾ▼ヨᩱࡢ཰







ᑕ࡟ࡼࡗ࡚ %H㸪 $O㸪 &O ࡞࡝ࡢ᰾✀ࡀ⏕ᡂࡍࡿ㸬㞟ࢆ⾜ࡗࡓ㸦ᅗ 㸧㸬ᆅᇦࡈ࡜ࡢ๐๤㏿ᗘࡢᕪ␗ࢆ

ࡇࡢᏱᐂ⥺⏕ᡂ᰾✀ࡢ⃰ᗘࡣ㸪᰾཯ᛂ࡟ࡼࡿ⏕᳨ドࡍࡿヨᩱࡣ㸪ᆅ⾲࡟㟢ฟࡋࡓ▼⅊ᒾᰕ㸦ࣆࢼᡂ࣭⵳✚࡜㸪ᒾ▼⾲㠃ࡢ౵㣗࠾ࡼࡧᨺᑕቯኚ࡟ࡼ

ࢡࣝ㸧ࡢ㡬㒊⣙ FP ⛬ᗘ࠿ࡽ᥇ྲྀࡋࡓ㸬ࡲࡓ㸪ࡿᦆኻ࡟ࡼࡗ࡚ᖹ⾮≧ែ࡜࡞ࡿ㸬㏆ᖺࡢຍ㏿ჾ㉁⛅ྜྷྎ࡟࠾࠸࡚࢝ࣝࢫࢺ≉᭷ࡢ⁐㣗พᆅ㸦ࢻ࣮ࣜ㔞ศᯒ㸦$06$FFHOHUDWRU0DVV6SHFWURPHWU\㸧ࢿ㸧ࡢᙧᡂࣉࣟࢭࢫ࠾ࡼࡧᙧᡂ᫬㛫ࢫࢣ࣮ࣝࢆㄽ

JRR-3MࠊPGAࠊᆅ⌫⛉Ꮫ㻤㻥- 210 -

JAEA-Review 2013-040

ヨᩱ᥇ྲྀᆅⅬࡢ⦋ᗘ࡜ᶆ㧗㸪࠾ࡼࡧ 3*$ ࡟ࡼࡗࡌࡿࡓࡵࡢヨᩱࢆ㸪඾ᆺⓗ࡞つᶍ࡜ᙧ≧ࢆᣢࡘࢻ࣮ࣜࢿࡢ᩿㠃

࡚ᚓࡽࢀࡓヨᩱࡢ໬Ꮫ⤌ᡂࢆ⏝࠸࡚ &O ࡢ⏕ᡂ⋡⥺ୖ࡟࠾࠸࡚᥇ྲྀࡋࡓ㸬᥇ྲྀࡋࡓᒾ▼ヨᩱࡣ⢊○ࡋ㸪⠠㐣ᩚ⢏ࡋࡓࡢࡕ㸪ࢆ⟬ฟࡋࡓ㸬ࡇࡢ᰾✀⏕ᡂ⋡ࢆධຊ᮲௳࡜ࡋ㸪$06⣧Ỉ࠾ࡼࡧ㓟࡛Ὑίࡋ㸪኱Ẽ⏤᮶ࡢ᰾✀ࡸ㸪ࡑࡢ࡟ࡼࡗ࡚ᚓࡽࢀࡓ &O ⃰ᗘࢆࡶࡗ࡜ࡶⰋࡃㄝ᫂ࡍ

௚ࡢࢥࣥࢱ࣑ࢿ࣮ࢩࣙࣥࢆ㝖ཤࡋࡓ㸬஝⇱ヨᩱࢆ

ࡿ๐๤㏿ᗘࢆᩘ್㏫ゎᯒ࡟ࡼࡗ࡚ồࡵࡓ㸬๐๤㏿⛗㔞ࡋ㸪 &O ࡟࢚ࣥࣜࢵࢳࡉࢀࡓ࢟ࣕࣜ࢔㸦 &Oᗘࡢ୙☜࠿ࡉࡣ㸪඲࡚ࡢィ

DWRP㸧ࢆῧຍࡋ࡚㓟࡛ศゎࡋࡓ㸬ヨᩱ⁐ᾮ୰ࡢ୙☜࠿ࡉࢆኚືᅉᏊ࡜ࡋࡓࣔࣥࢸ࢝ࣝࣟࢩ࣑

ࡢሷ⣲ࢆሷ໬㖟ỿẊ࡜ࡋ࡚ᅇ཰ࡋ㸪஝⇱ࡉࡏ࡚࣮ࣗࣞࢩࣙࣥ࡟ࡼࡗ࡚ホ౯ࡋࡓ㸬$06 ࡢࢱ࣮ࢤࢵࢺヨᩱ࡜ࡋࡓ㸬⟃Ἴ኱Ꮫ◊✲ᇶ┙⥲ྜࢭࣥࢱ࣮ᛂ⏝ຍ㏿ჾ㒊㛛ࡢ$06 ࢩࢫࢸ࣒ࢆ
್࠾ࡼࡧࣃ࣓࣮ࣛࢱ

᪥ᮏྛᆅ࡟࠾ࡅࡿ๐๤㏿ᗘ࡜㸪Ẽೃ᮲௳㸦ᖹᆒẼ࠾ࡼࡧᖺ㝆Ỉ㔞㸧࡜ࡢ㛵ಀࢆᅗ  ࡟♧ࡍ㸬᪥ᮏิᓥࡢள⇕ᖏ࠿ࡽளᐮᖏࡲ࡛ࡢᆅᇦ࡛ࡣ㸪Ẽᒾ▼ヨᩱ࡟ྵࡲࢀ࡚࠸ࡿ &O ࠾ࡼࡧᏳᐃ &O ⃰ᗘೃࡀ඲ࡃ␗࡞ࡿ࡟ࡶ࠿࠿ࢃࡽࡎ㸪Ⅳ㓟ሷᒾࡣࢆ⟬ฟࡋࡓ㸬PPN\U ࡢ㢮ఝࡋࡓ㏿ᗘ࡛๐๤ࡉࢀ࡚࠾ࡾ㸪ࡲࡓ㸪Ὑίᚋࡢ஝⇱ヨᩱࡢ୍㒊ࢆศྲྀࡋ㸪ࣇࢵẼೃ᮲௳࡜๐๤㏿ᗘࡢ㛫࡟ࡣ᫂░࡞㛵ಀࡣㄆࡵ

⏝࠸࡚ &O&O ࠾ࡼࡧ &O &O ྠ఩యẚࢆỴᐃࡋ㸪
80⣲ᶞ⬡ࣇ࢕࣒ࣝ࡟ᑒධࡋ࡚ 3*$ ࡢࢱ࣮ࢤࢵࢺヨᩱ࡜ࡋࡓ㸬-$($-550 ࡢࣅ࣮࣒࣮࣍ࣝ࡟࠾࠸࡚୰

(A)

ᛶᏊࢆ↷ᑕࡋ㸪3*$ ࡟ࡼࡗ࡚୺せඖ⣲࠾ࡼࡧ୰ᛶ
Ꮚ྾཰᰾ࡢᏑᅾ㔞ࢆồࡵࡓ㸬

60



Denudation rate (mm kyr1)

40

20

0
500

1000
1500
2000
2500
Annual precipitation (mm a1)

3000

80

(B)
60

40

20

0

ᅗ 1. ㄪᰝᑐ㇟ᆅᇦ㸬ᅗ୰ࡢ㯮ሬࡾ㒊ศࡣ㸪Ⅳ
㓟ሷᒾࡢศᕸᇦ㸬

0

5

10
15
20
Mean temperature (qC)25

ᅗ 2. ᪥ᮏ࡟࠾ࡅࡿⅣ㓟ሷᒾࡢ๐๤㏿ᗘ࡜㝆Ỉ㔞࠾ࡼࡧᖹᆒẼ

JRR-3MࠊPGAࠊᆅ⌫⛉Ꮫ

࡜ࡢ㛵ಀ㸬

3-8
㻥㻜

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JAEA-Review 2013-040ࡽࢀ࡞࠿ࡗࡓ㸬ࡇࢀࡣ㸪ᚑ᮶㸪Ⅳ㓟ሷᒾࡢ๐๤࡟

ᚓࡽࢀࡓⅣ㓟ሷᒾࡢ๐๤㏿ᗘࡢ್ࡣ㸪௚ࡢᡭἲ࡟

࠾࠸࡚᭱ࡶ㔜せ࡛࠶ࡿ࡜⪃࠼ࡽࢀ࡚࠸ࡓ໬Ꮫⓗࡼࡗ࡚ࡣᚓ㞴࠸୓ᖺࢫࢣ࣮࡛ࣝࡢᖹᆒ್࡛࠶ࡿ㸬⁐ゎస⏝㸦⁐㣗㸧࡟ຍ࠼࡚㸪෾⤖◚○࡞࡝≀⌮ⓗࡇ࠺ࡋࡓ㛗ᮇࢫࢣ࣮࡛ࣝࡢᆅ⾲㠃ࡢ๐๤㏿ᗘࡢ࡞౵㣗స⏝ࡶ኱ࡁ࡞ᐤ୚ࢆࡶࡓࡽࡋ࡚࠸ࡿྍ⬟್ࡣ㸪ᑗ᮶⾜ࢃࢀࡿ࡛࠶ࢁ࠺㧗ࣞ࣋ࣝᨺᑕᛶᗫᲠ

ᛶࢆ♧၀ࡋ࡚࠸ࡿ㸬≀ࡢᆅᒙฎศ࡟࠾࠸࡚ᚲせ࡜ࡉࢀ࡚࠸ࡿᆅ㉁⎔ḟ࡟㸪⛅ྜྷ࢝ࣝࢫࢺ࡟࠾࠸࡚ࢻ࣮ࣜࢿࢆᑐ㇟࡟㸪ቃࡢ㛗ᮇᏳᐃᛶホ౯࡟㈨ࡍࡿࡶࡢ࡛࠶ࡿ㸬Ᏹᐂ⥺พᆅࢆᵓᡂࡍࡿᩳ㠃ࡢ๐๤㏿ᗘ࠾ࡼࡧพᆅࡢᙧ

⏕ᡂ᰾✀࡟ࡼࡿᆅ⾲ࣉࣟࢭࢫࡢᐃ㔞໬ࡣ㸪௒ᚋࡲᡂ᫬㛫ࢆ᥎ᐃࡋࡓ౛ࢆᅗ  ࡟♧ࡍ㸬๐๤㏿ᗘࡣࢻࡍࡲࡍࡑࡢࢽ࣮ࢬࢆቑ኱ࡉࡏࡿࡶࡢ࡜⪃࠼࡚࠾࣮ࣜࢿࡢ୰ᚰ࡟㏆࡙ࡃ࡟ࡘࢀ࡚኱ࡁࡃ࡞ࡿഴྥ

ࡾ㸪ᮏ◊✲࡛ࡣࡑ࠺ࡋࡓᐃ㔞໬ࡢࣃ࢖ࣟࢵࢺࢣ࣮

ࡀ࠶ࡾ㸪พᆅ࿘⦕࡜พᆅᗏ㒊࡛ࡣ㸪๐๤㏿ᗘ࡟ ࢫࢆ♧ࡍࡇ࡜ࡀ࡛ࡁࡓ㸬ࡲࡓẼೃ࠶ࡿ࠸ࡣ㞟Ỉᆅಸ⛬ᗘࡢᕪ␗ࡀㄆࡵࡽࢀࡓ㸦ᅗ 㸧㸬ᚓࡽࢀࡓ๐๤

ᙧ࡜๐๤㏿ᗘ࡜ࡢ㛵ಀࢆㄽࡌࡿࡇ࡜ࡣ㸪࢝ࣝࢫࢺ㏿ᗘࢆ⏝࠸࡚㸪พᆅࡢ㐣ཤࡢᶓ᩿ᙧ≧ࢆ᚟ඖࡋࡓ

ᆅᙧࡢⓎ㐩㐣⛬ࡢᐃ㔞ⓗ⌮ゎࢆ᥎㐍ࡉࡏࡿࡶࡢ

࡜ࡇࢁ㸪ࡇࡢࢻ࣮ࣜࢿࡢᙧᡂ࡟せࡋࡓ᫬㛫ࡣ㸪⣙࡛࠶ࡾ㸪ᮏ◊✲ࡣࡑࡢඛ㠴ࢆࡘࡅࡓࡶࡢ࡜ࡋ࡚఩ ୓ᖺ࡛࠶ࡿࡇ࡜ࡀ᫂ࡽ࠿࡜࡞ࡗࡓ㸦ᅗ 㸧㸬ࡲ⨨࡙ࡅࡽࢀࡿ㸬࡞࠾㸪௨ୖࡢᡂᯝࡣ㸪ḟ㡯࡟♧ࡍࡓ㸪๐๤㏿ᗘࡣྛᆅⅬ࡛ࡢ༢఩➼㧗⥺㛗࠶ࡓࡾࡢࡼ࠺࡟㸪ᅜෆእࡢᏛ఍࡛Ⓨ⾲ࡋ㸪ᅜ㝿ㄅ *HRORJ\㞟Ỉ㠃✚࡟ẚ౛ࡋ࡚ቑ኱ࡍࡿࡇ࡜ࡀ᫂ࡽ࠿࡜࡞

࠾ࡼࡧ 1XFOHDU,QVWUXPHQWVDQG0HWKRGVLQࡗࡓ㸬ࡇࡇ࡛ᚓࡽࢀࡓ㞟Ỉ㠃✚࡜๐๤㏿ᗘࡢ㛵ಀ

3K\VLFV5HVHDUFK% ࡟ཎⴭㄽᩥ࡜ࡋ࡚ᢞ✏㸪ཷ⌮࠿ࡽ࿘ᅖࡢ」ᩘࡢࢻ࣮ࣜࢿࡢᙧ≧ࢆㄝ᫂ࡍࡿࡇ

ࡉࢀࡓ㸬࡜ࡀ࡛ࡁࡓ㸬ࡇࢀ࡟ࡼࡾ㸪⁐㣗ࢻ࣮ࣜࢿࡀ㞟Ỉ࡟௒ᚋࡣࡉࡽ࡟ᑐ㇟⠊ᅖࢆᣑ኱ࡋ㸪୰ᅜ㸪ᮾ༡࢔క࠺▼⅊ᒾࡢ⁐ゎ㔞ࡢቑ኱࡟ࡼࡗ࡚ᙧᡂࡉࢀࡿ

ࢪ࢔ࡢⅣ㓟ሷᒾᆅᇦࡢᆅ⾲㠃࠿ࡽ᥇㞟ࡋࡓヨᩱ࡜࠸࠺ᚑ᮶ࡢ௬ㄝࡣ᳨ドࡉࢀࡓ㸬ࡢศᯒࢆ⾜࠺㸬ࡲࡓ㸪ᆅ⾲㠃ୗ࠿ࡽ᥇ྲྀࡋࡓⅣ㓟ሷᒾ࠾ࡼࡧࢣ࢖㓟ሷᒾ㸪ࡉࡽ࡟ࡣࡑࢀࢆẕᮦ࡜ࡍᡂᯝ࡟ᑐࡍࡿホ౯ࡿᅵተࡢศᯒࢆ⾜࠺ணᐃ࡛࠶ࡿ㸬ࡇࢀ࡟ࡼࡾ໬Ꮫ
ᮏ◊✲࡛㸪Ᏹᐂ⥺⏕ᡂ᰾✀ &O ࡢศᯒ࡟ࡼࡗ࡚

ⓗ㢼໬࡜≀⌮ⓗ౵㣗ࡢᐤ୚ࢆศ㞳ࡋࡓᙧ࡛㸪๐๤㏿ᗘࢆ෌ホ౯࡛ࡁࡿࡶࡢ࡜⪃࠼࡚࠸ࡿ㸬ࡲࡓ㸪ࡇࢀࡲ࡛࡟Ᏹᐂ⥺⏕ᡂ᰾✀ࡢ⏕ᡂ⋡ࡀ᫂ࡽ࠿࡟࡞
ࡗ࡚࠸࡞࠸✀ࠎࡢ㖔≀࡟ࡘ࠸࡚ࡶศᯒࢆ⾜࠺ࡇ࡜ࢆ᳨ウࡋ࡚࠸ࡿ㸬ᡂᯝࡢබ⾲
ᰝㄞࡘࡁཎⴭㄽᩥ
0DWVXVKL<+DWWDQML7$NL\DPD66DVD.
7DNDKDVKL76XHNL.0DWVXNXUD<(YROXWLRQRIVROXWLRQGROLQHVLQIHUUHGIURPFRVPRJHQLF &O LQ FDOFLWH *HRORJ\ ̽

ᅗ 3. ⛅ྜྷྎ࡟࠾࠸࡚ 36Cl ࠿ࡽồࡵࡓ๐๤㏿ᗘ࡟ࡼࡾ᚟ඖࡋࡓ⁐㣗ࢻ࣮ࣜࢿࡢᙧᡂ㐣⛬㸬

0DWVXVKL<6DVD.7DNDKDVKL76XHNL.
1DJDVKLPD<0DWVXNXUD<'HQXGDWLRQUDWHV RI FDUERQDWH SLQQDFOHV LQ -DSDQHVHNDUVWDUHDVHVWLPDWHVIURPFRVPRJHQLF&O
LQFDOFLWH1XFOHDU,QVWUXPHQWVDQG0HWKRGVJRR-3MࠊPGAࠊᆅ⌫⛉Ꮫ

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JAEA-Review 2013-040

LQ3K\VLFV5HVHDUFK%̽⣖せ➼
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᪥ᮏᆅᙧᏛ㐃ྜ㸪ி㒔ᩍ⫱኱Ꮫ㸪 ᖺ  ᭶㸬ᯇᅄ㞝㥽࣭➲බ࿴࣭ᮎᮌၨ௓࣭㧗ᶫດ࣭㛗ᓥὈኵ࣭ᯇ಴බ᠇᪥ᮏิᓥ࡟࠾ࡅࡿ㟢ฟⅣ㓟ሷᒾࡢ㛗ᮇⓗ౵㣗㏿ᗘ࢝ࣝࢧ࢖ࢺ୰ࡢᏱᐂ⥺⏕ᡂ᰾✀ &O ࢆ⏝࠸ࡓ᥎ᐃ➨  ᅇᨺᑕ໬Ꮫウㄽ఍㸪᪥ᮏ኱Ꮫ㸪 ᖺ  ᭶㸬ᯇᅄ㞝㥽࣭ᯇ಴බ᠇࣭➲බ࿴࣭ᯇᓮᾈஅᏱᐂ⥺⏕ᡂ᰾✀ࢆ⏝࠸ࡓᆅ⾲㠃ࡢ౵㣗㏿ᗘࡢᐃ㔞᪥ᮏิᓥ࡟࠾ࡅࡿ㐺⏝౛᪥ᮏᆅ⌫໬Ꮫ఍➨ ᅇᖺ఍㸪ᗈᓥ኱Ꮫ㸪 ᖺ  ᭶㸬ᯇᅄ㞝㥽࣭➲බ࿴࣭ᮎᮌၨ௓࣭㧗ᶫດ࣭㛗ᓥὈኵ࣭ᯇ಴බ᠇᪥ᮏิᓥ࡟࠾ࡅࡿ࢝ࣝࢫࢺᆅᙧ⾲㠃ࡢ๐๤㏿ᗘᏱᐂ⥺⏕ᡂ᰾✀ &O ࡟ࡼࡿ᥎ᐃ
᪥ᮏᆅ⌫ᝨᫍ⛉Ꮫ㐃ྜ㸪ᖥᙇ࣓ࢵࢭᅜ㝿఍㆟ሙ㸪

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 ᖺ  ᭶㸬ᯇᅄ㞝㥽࣭➲බ࿴࣭ᮎᮌၨ௓࣭㧗ᶫດ࣭ᯇ಴බ᠇
࢔ࢪ࢔ࡢ࢝ࣝࢫࢺ࡟࠾ࡅࡿୣ㡬㒊ࡢ๐๤㏿ᗘ୓ᖺࢫࢣ࣮࡛ࣝࡢᨭ㓄せᅉࡣẼೃ࡛ࡣ࡞࠸
᪥ᮏᆅᙧᏛ㐃ྜ㸪❧ṇ኱Ꮫ㸪 ᖺ  ᭶㸬ᯇᅄ㞝㥽࣭ᯇᓮᾈஅ࣭➲බ࿴ᒾ▼୰ࡢᏱᐂ⥺⏕ᡂ᰾✀ࡢ࣏ࢸࣥࢩࣕࣝ࡜ศᯒࢥࢫࢺே࣭᫬
㛫࣭㈝⏝᪥ᮏᆅᙧᏛ㐃ྜ㸪❧ṇ኱Ꮫ㸪 ᖺ ᭶㸬
ᯇᅄ㞝㥽࣭ᯇᓮᾈஅᏱᐂ⥺⏕ᡂ᰾✀ࢆ⏝࠸ࡓᒣᆅὶᇦ࠿ࡽࡢ㛗ᮇⓗᅵ◁⏕⏘㏿ᗘࡢᐃ㔞᪥ᮏᆅ⌫ᝨᫍ⛉Ꮫ㐃ྜ㸪ᖥᙇ࣓ࢵࢭᅜ㝿఍㆟ሙ㸪 ᖺ  ᭶㸬ᯇᅄ㞝㥽࣭ᯇᓮᾈஅ࣭➲බ࿴Ᏹᐂ⥺⏕ᡂ᰾✀ࢆ⏝࠸ࡓᆅ⾲㠃๐๤㏿ᗘࡢ᥎ᐃࢱࣥࢹ࣒ຍ㏿ჾཬࡧࡑࡢ࿘㎶ᢏ⾡ࡢ◊✲఍㸪ᮾி኱Ꮫ㸪ᖺ  ᭶㸬ᯇᅄ㞝㥽࣭➲බ࿴࣭ᯇᓮᾈஅ࣭ᯇ಴බ᠇࢝ࣝࢫࢺᆅᙧ◊✲࡟࠾ࡅࡿᏱᐂ⥺⏕ᡂ᰾✀ࡢᛂ⏝᪥ᮏᆅ⌫ᝨᫍ⛉Ꮫ㐃ྜ㸪ᖥᙇ࣓ࢵࢭᅜ㝿఍㆟ሙ㸪 ᖺ  ᭶㸬

JRR-3MࠊPGAࠊᆅ⌫⛉Ꮫ

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3-9す༡᪥ᮏᘼⅆᒣ࣐ࢢ࣐⤌ᡂ࡜ỿࡳ㎸ࡳᡂศࡢ࢟ࣕࣛࢡࢱࣛ࢖ࢮ࣮ࢩࣙࣥ
Compositions of Southwestern Japan arc magmas andcharacterization of subduction components⇃ᮏ኱Ꮫ ኱Ꮫ㝔⮬↛⛉Ꮫ◊✲⛉ 㛗㇂୰ ฼᫛㸪୕ዲ 㞞ஓ㸪ୗ㔝 ࡲ࡝࠿㸪㛵ཱྀ ᝆᏊ㸪ᇼ ┤அ㸪⏣ᮧ ᬛᘺ㸪᭷㈡ ⩧ᖹ㸪ୖ⏣ ᜤ⿱1㸬ࡣࡌࡵ࡟ ஑ᕞࢆྵࡴす༡᪥ᮏᘼࡢⅆᒣάືࡣ㸪ࣇ࢕ࣜࣆࣥᾏࣉ࣮ࣞࢺࡀ࣮ࣘࣛࢩ࢔ࣉ࣮ࣞࢺ࡟ỿࡳ㎸ࡴࡇ࡜࡟㛵ಀࡋ࡚࠸ࡿ㸬ỿࡳ㎸ࡴࣇ࢕ࣜࣆࣥᾏ
ࣉ࣮ࣞࢺࡀᮾ㒊ࡢᅄᅜᾏ┅㸦15ࠥ26 Ma㸧࡜す㒊ࡢྂ࠸ࣉ࣮ࣞࢺ㸦40ࠥ60 Ma㸧࡛ᖺ௦ࡀ␗࡞
ࡗ࡚࠸ࡿࡇ࡜㸪஑ᕞࣃࣛ࢜ࣜࢵࢪࡀỿࡳ㎸ࢇ࡛࠸ࡿࡇ࡜㸪ูᗓᓥཎᆅ⁁ᖏࡀ࠶ࡿࡇ࡜ࢆ⪃࠼ࡿ࡜㸪஑ᕞࡢⅆᒣάືࡣ」㞧࡞ࢸࢡࢺࢽࢵࢡࢭࢵ
ࢸ࢕ࣥࢢࡢ཯ᫎࡔ࡜ゝ࠼ࡿ㸦Figs. 1&2㸧㸬ỿࡳ㎸ࡳᖏ῝㒊࡛ࡢ࣐ࣥࢺࣝ≀㉁ࡢ㒊ศ⁐⼥࡟ࡼࡿ࣐ࢢ࣐⏕ᡂ᮲௳ࡸ⏕ᡂࡍࡿ࣐ࢢ࣐⤌ᡂ࡟ࡣࣉ࣮ࣞ
ࢺ࠿ࡽᨺฟࡉࢀࡿὶయ┦ࡀ㘽ࢆᥱࡿ࡜⪃࠼ࡽࢀࡿ㸬ὶయ┦࡟ࡼࡗ࡚ᾏὒࣉ࣮ࣞࢺ࠿ࡽ࣐ࣥࢺࣝ
࡟ࡶࡓࡽࡉࢀࡿ≀㉁ࢆࠕỿࡳ㎸ࡳᡂศࠖ࡜࿧ࡪ
ࡀ㸪ⅆᒣᘼࡢ࣐ࢢ࣐ࢆ◊✲ࡋ㸪ᆅ⌫࡟࠾ࡅࡿ≀Fig. 1 ᪥ᮏิᓥ࠾ࡼࡧࡑࡢ࿘㎶ࡢࢸࢡࢺࢽࢵࢡ㉁ᚠ⎔ࢆ⌮ゎࡍࡿୖ࡛㔜せ࡞᝟ሗࢆࡶࡓࡽࡍ㸬ࢭࢵࢸ࢕ࣥࢢ㸦Miyoshi et al., 2008 ࡢᅗࢆᘬ⏝㸧 ᾏὒᗏሁ✚≀㸪ኚ㉁ᾏὒᗏ⋞Ṋᒾ࡟ከ㔞࡟ྵࡲࢀࡿ࣍࢘⣲ࡣ㸪௚ࡢỿࡳ㎸ࡳᡂศ࡟ẚ࡭㠀ᖖ࡟ὶືᛶ࡟ᐩࡴࡓࡵ㸪࣐ࣥࢺࣝࡢ࣐ࢢ࣐㉳※≀ ࢹ࣮ࢱゎᯒ࡟ᙜࡓࡗ࡚ࡣศᯒࡋࡓྛⅆᒣᒾࡢ㉁࡬ὶయࡀᐤ୚ࡍࡿᗘྜ࠸ࢆㄪ࡭ࡿⰋ࠸ࢺ࣮ࣞ

࣍࢘⣲ࡢྵ᭷㔞ࢆࡑࡢࡲࡲࡢᙧ࡛ྲྀࡾᢅ࠺ࡢ࡛

ࢧ࣮࡜࡞ࡿ㸬ỿࡳࡇࡴࣇ࢕ࣜࣆࣥᾏࣉ࣮ࣞࢺࡀ

ࡣ࡞ࡃ㸪B/Zr, B/Nb ࡞࡝㸪ᾮ┦⃰㞟ඖ⣲ࡢẚࢆ⏝஑ᕞ┤ୗࡢ࣐ࢢ࣐㉳※≀㉁࡟୚࠼ࡓᙳ㡪ࢆ㸪⋞࠸ࡓ㸬ࡇࢀࡽࡢ್ࡣ࣐ࢢ࣐ࡢ⤖ᬗศ໬స⏝ࡸ㒊ศṊᒾࠥᏳᒣᒾࡢ࣍࢘⣲ྵ᭷㔞ࢆ⏝࠸᳨࡚ウࡋࡓ㸬

⁐⼥ࡢᗘྜ࠸ࡢᙳ㡪ࢆཷࡅࡎ㸪࣐ࣥࢺࣝࡢ㉳※≀⋞ṊᒾࠥᏳᒣᒾࢆ㑅ࢇࡔ⌮⏤ࡣ㸪࣐ࢢ࣐࡜ᆅẆ㉁ࡢ್ࢆ཯ᫎࡋ࡚࠾ࡾ㸪ỿࡳ㎸ࡳᡂศࡢᙳ㡪ࢆ᭱≀㉁ࡢ┦஫స⏝ࡢᙳ㡪ࡀᑡ࡞࠸ࡓࡵ࡛࠶ࡿ㸬ࡶⓗ☜࡟ぢ✚ࡶࡿࡇ࡜ࡀ࡛ࡁࡿᣦᶆ࡛࠶ࡿ㸬 ᮏ◊✲࡛ศᯒࡋࡓ࣍࢘⣲ࡣヨᩱ‽ഛ㐣⛬࡟࠾ࡅࡿởᰁࡀ㉳ࡇࡾࡸࡍ࠸ࡢ࡛㸪ཎᏊ⅔ࢆ฼⏝ࡋࡓ㠀◚ቯࡢ༶Ⓨ࣐࢞ࣥ⥺ศᯒἲࢆ᥇⏝ࡋࡓ㸬

JRR-3M, ༶Ⓨ࣐࢞ࣥ⥺ศᯒ⿦⨨㸪ᆅ⌫⛉Ꮫ㻥㻟- 214 -

JAEA-Review 2013-040ศᯒ⿦⨨ࢆ⏝࠸㸪1000ࠥ7200 ⛊ࡢ↷ᑕࢆ⾜ࡗࡓ㸬ヨᩱࡢᙧ≧ࡸ୰ᛶᏊ᮰ࡢኚື࡟క࠺Ț⥺ᙉᗘࡢኚືࡣ㸪ࢣ࢖⣲ࢆෆ㒊ᶆ‽࡜ࡋ࡚⿵ṇࡋࡓ㸬ᐃ㔞ࢆ⾜ࡗࡓඖ⣲ࡣ࣍࢘⣲㸦B㸧㸪ሷ⣲㸦Cl㸧㸪ࢳࢱࣥ㸦Ti㸧㸪࣒࢝ࣜ࢘㸦K㸧㸪ࢧ࣐࣒ࣜ࢘㸦Sm㸧㸪࢞ࢻ࣒ࣜ࢘㸦Gd㸧㸪㕲㸦Fe㸧㸪Ỉ⣲㸦H㸧㸪࢝ࣝࢩ࣒࢘㸦Ca㸧࡛࠶ࡿ㸬࣍࢘⣲ࡢ 478 keV ࡢࣆ࣮ࢡࡣࢼࢺ࣒ࣜ࢘
ࡢ 472 keV ࡢࣆ࣮ࢡ࡜㔜࡞ࡗ࡚࠸ࡿࡢ࡛㸪㧗࢚ࢿࣝࢠ࣮ഃ༙ศ࡟ࡘ࠸࡚ࡢࡳࣆ࣮ࢡ㠃✚ࢆィ⟬ࡋࡓ㸬ศᯒἲࡢヲ⣽ࡣబ㔝ࡽ㸦1998㸧࠾ࡼࡧ Sano etal. (1999)࡟グ㍕ࡉࢀ࡚࠸ࡿ㸬ヨᩱࡣྠ᫬࡟⺯ග X⥺ศᯒἲ࡛୺ᡂศඖ⣲࡟ࡘ࠸࡚ࡶศᯒࡋࡓ㸬
4㸬ศᯒ⤖ᯝ࣭⪃ᐹ
Fig. 2 ໭㒊஑ᕞ⋞Ṋᒾࡢ᫬✵ศᕸ㸬 IAB:ᓥᘼ⋞Ṋ ஑ᕞ࡟࠾ࡅࡿ࣍࢘⣲࣐ࢵࣆࣥࢢ⤖ᯝࡣ኱ኚ⯆ᒾ㸪OIB:ᾏὒᓥᆺ⋞Ṋᒾ㸪CA:࢝ࣝࢡ࢔ࣝ࢝ࣜᒾ㸪࿡῝࠸ࡶࡢ࡛࠶ࡗࡓ㸬ࣇ࢕ࣜࣆࣥᾏࣉ࣮ࣞࢺࡢỿ

ME:࣐ࣇ࢕ࢵࢡᤕ⋓ᒾ㸪HMA:㧗࣐ࢢࢿࢩ࢔Ᏻᒣᒾ㸪ࡳ㎸ࡳࡀጞࡲࡗࡓ 600 ୓ᖺ๓ࢆቃ࡜ࡋ࡚㸪ࡑࢀ௨

ADK:࢔ࢲ࢝࢖ࢺ㸪WBZ:࿴㐩-࣋ࢽ࢜ࣇᖏ㸪IK:ኍᒱ㸪๓࡟ࡣỿࡳ㎸ࡳࡢᙳ㡪ࡣ࡯࡜ࢇ࡝ぢࡽࢀ࡞࠿ࡗ

KM:໭ᯇᾆ㸪GK:⋞ᾏᓥ㸪UZ:㞼௝㸪OY:኱▮㔝ᓥ㸪ࡓࡢࡀ㸪600 ୓ᖺ௨㝆࡟ࡣỿࡳ㎸ࡳࡢᙳ㡪ࡀ⌧ࢀSS:ኳⲡୗᓥ㸪AS:㜿⸽㸪KJ:஑㔜㸪YT:⏤ᕸ㭯ぢ㸪ON:ጞࡵࡓ㸦Fig. 3㸧㸬ỿࡳ㎸ࡳᡂศࡀ㢧ⴭ࡞ࡢࡣ᪥ྥ

㨣⟪㸪HVZ:㇏⫧ⅆᒣᆅᇦ㸪YB:⪨㤿῱㸦Miyoshi et al.,ℿ࡟㏆࠸ⅆᒣࣇࣟࣥࢺࡢⅆᒣࡢࡳ࡛㸪⫼ᘼഃ࡟఩

2008 ࡢᅗࢆᘬ⏝㸧⨨ࡍࡿⅆᒣ࡟࠾࠸࡚ࡣỿࡳ㎸ࡳᡂศࡣぢࡽࢀ࡞࠿ࡗࡓ㸬ࡇࡢࡇ࡜ࡣᆅ㟈Ἴ࡟ࡼࡗ࡚ồࡵࡽࢀࡓỿ

2㸬ศᯒヨᩱ

ࡳ㎸ࡳࣉ࣮ࣞࢺࡢᙧ≧ࡀⅆᒣࣇࣟࣥࢺ௜㏆࡛ᛴ ໭㒊஑ᕞ࠿ࡽࡣ㸪ኍᒱⅆᒣ㸪⋞ᾏᓥ㸪໭ᯇᾆᆅゅᗘ࡟ᢡࢀ᭤ࡀࡗ࡚ࡋࡲ࠸㸪⫼ᘼഃࡲ࡛㐩ࡋ࡚࠸ᇦ㸪⏤ᕸⅆᒣ㸪㭯ぢⅆᒣ㸪㨣⟪ⅆᒣ㸪஑㔜ⅆᒣ㸪࡞࠸ࡇ࡜࡜ㄪ࿴ⓗ࡛࠶ࡿ㸬⪨㤿῱ᆅᇦ㸪㜿⸽ⅆᒣ㸪㞼௝ⅆᒣ㸪ከⰋᓅⅆᒣ㸪 ࡲࡓ໭㒊஑ᕞ࡜༡㒊஑ᕞ࡛ࡶỿࡳ㎸ࡳᡂศࡢ኱▮㔝ᓥ㸪ኳⲡᆅᇦ㸪஬ᓥิᓥ⚟Ụᓥ㸪⪨㤿῱ⅆ⃰㞟ᗘ࡟኱ࡁ࡞㐪࠸ࡀぢࡽࢀࡓ㸦Figs. 3&4㸧㸬ጲᒣᒾ㢮࠿ࡽ᥇ྲྀࡋࡓࡶࡢ㸪༡㒊஑ᕞ࠿ࡽࡣ㸪㟝ᓥᓥ㸪⏤ᕸ㭯ぢ㸪ஂ㔜㸪㨣⟪㸪໭㒊஑ᕞࡢⅆᒣࡣỿⅆᒣ㸪ᱜᓥⅆᒣ㸪㛤⪺ⅆᒣ㸪⫧⸃ⅆᒣᒾ㢮࠿ࡽ᥇ࡳ㎸ࡳᡂศࡀ㠀ᖖ࡟ᑡ࡞࠸ࡢ࡟ᑐࡋ㸪㜿⸽㸪㟝ᓥ㸪ྲྀࡋࡓࡶࡢࢆศᯒヨᩱ࡜ࡋࡓ㸬඲ヨᩱ࡟ࡘ࠸࡚༶

ᱜᓥ㸪㛤⪺࡞࡝༡㒊஑ᕞࡢⅆᒣࡣỿࡳ㎸ࡳᡂศࡀⓎ࣐࢞ࣥ⥺ศᯒࢆ⾜ࡗࡓ㸬ከ࠸ࡇ࡜ࡀࢃ࠿ࡗࡓ㸬ࡇࢀࡣỿࡳ㎸ࡴࣇ࢕ࣜࣆࣥ
ᾏࣉ࣮ࣞࢺࡢᖺ௦࡜㛵㐃࡙ࡅࡽࢀࡿ㸬໭㒊஑ᕞ࡛

3㸬ศᯒ᪉ἲ

ࡣⱝ࠸ᖺ௦ࡢࣉ࣮ࣞࢺࡀỿࡳ㎸ࢇ࡛࠸ࡿࡢ࡟ᑐ ඲࡚ࡢศᯒヨᩱࡣ⢊○ࡋ࡚⢊ᮎ໬ࡋ㸪0.6-0.8g

ࡋ㸪༡㒊஑ᕞࡣྂ࠸ᖺ௦ࡢࣉ࣮ࣞࢺࡀỿࡳ㎸ࢇ࡛ࢆ 105-110Υࡢ஝⇱⅔ࡢ୰࡛஝⇱ࡋࡓ㸬ࡇࢀࢆཌ࠸ࡿ㸬୧⪅ࡢቃࢆ࡞ࡍ஑ᕞࣃࣛ࢜ࣜࢵࢪࡀỿࡳ㎸

ࡉ 2-3mm㸪┤ᚄ 12mm ࡟ࣉࣞࢫ㘄๣໬ࡋ㸪ࣇࢵ໬ࡴ㜿⸽㸪㟝ᓥⅆᒣࡣ≉࡟ỿࡳ㎸ࡳᡂศࡀ㢧ⴭ࡛࠶࢚ࢳࣞࣥࣉࣟࣆࣞࣥ㸦FEP㸧ࣇ࢕࣒ࣝࡢ⿄୰࡟⼥ࡿ㸬໭㒊஑ᕞ࡛ỿࡳ㎸ࡳᡂศࡀᑡ࡞࠸ࡇ࡜ࡣ㸪ⱝᐃ࡟ࡣ JRR-3M ⅔

࠸ࣉ࣮ࣞࢺࡣẚ㍑ⓗ⇕࠸ࡓࡵ࡟㸪ⅆᒣᘼࡢ┤ୗ㸪ᑒࡋࡓ㸬୰ᛶᏊᨺᑕ໬࡜Ț⥺ࡢ⇕୰ᛶᏊ࢞࢖ࢻࣅ࣮࣒࡟タ⨨ࡉࢀࡓ༶ⓎȚ⥺
JRR-3M, ༶Ⓨ࣐࢞ࣥ⥺ศᯒ⿦⨨㸪ᆅ⌫⛉Ꮫ

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JAEA-Review 2013-040

Fig.4

༡㒊஑ᕞⅆᒣᒾࡢඖ⣲ẚࡢᓥᘼᶓ᩿᪉ྥ

Fig. 3 ໭㒊஑ᕞⅆᒣᒾࡢඖ⣲ẚࡢᓥᘼᶓ᩿᪉ྥ

ࡢኚ໬㸬 ᕥᅗࡣ 1000 ୓ᖺ๓࠿ࡽ 40 ୓ᖺ๓㸪ྑࡢኚ໬㸬 ᕥᅗࡣ 1100 ୓ᖺ๓࠿ࡽ 600 ୓ᖺ๓㸪ᅗࡣ 30 ୓ᖺ๓࠿ࡽ⌧ᅾࡲ࡛ࡢኚ໬ࢆ♧ࡍ㸬ࣉࣟ

ྑᅗࡣ 600 ୓ᖺ๓࠿ࡽ⌧ᅾࡲ࡛ࡢኚ໬ࢆ♧ࡍ㸬␎ࢵࢺࡋ࡚࠸ࡿࡢࡣ㟝ᓥ㸪⫧⸃ⅆᒣᒾ㢮㸪ኳⲡୗᓥྕࡣ Fig. 2 ࡜ྠࡌ㸬ᙳࢆ௜ࡅࡓ㒊ศࡣ୰ኸᾏᕊ⋞ࡢࢹ࣮ࢱ࡛࠶ࡿ㸬ẚ㍑ࡢࡓࡵ༓ᓥᘼ㸪ఀ㇋ᘼ㸪ᮾṊᒾ㸦MORB㸧ࡸᾏὒᓥ⋞Ṋᒾ㸦OIB㸧ࡢ⤌ᡂᇦ໭᪥ᮏᘼ㸪࢟ࣕࢫࢣ࣮ࢻ㸪࣐ࣜ࢔ࢼᘼࡢࢹ࣮ࢱࢆ

ࢆ♧ࡍ㸦Miyoshi et al., 2008 ࡢᅗࢆᘬ⏝㸧㸬㸬♧ࡍ㸦Miyoshi et al., 2010 ࡢᅗࢆᘬ⏝㸧⣙ 100km ࡢ῝ࡉ࡟㐩ࡍࡿ๓࡟ỿࡳ㎸ࡳᡂศࡀኻ

5㸬ࡲ࡜ࡵࢃࢀ࡚ࡋࡲ࠺ࡇ࡜࡛ㄝ᫂ࡀྍ⬟࡛࠶ࡿ㸬 ஑ᕞࡢⅆᒣᒾ࡟ࡘ࠸࡚ỿࡳ㎸ࡳᡂศࢆศᯒࡋ ௚ࡢᓥᘼ࡜ẚ㍑ࡋࡓሙྜ㸪஑ᕞᘼࡣ⥲ࡌ࡚ỿࡳࡓ⤖ᯝ㸪௨ୗࡢࡇ࡜ࡀࢃ࠿ࡗࡓ㸬㎸ࡳᡂศࡀᑡ࡞࠸㸦Fig. 5㸧㸬ྂ࠸᫬௦ࡢࡶࡢ㸪⫼1㸧ࣇ࢕ࣜࣆࣥᾏࣉ࣮ࣞࢺࡢỿࡳ㎸ࡳࡀጞࡲࡗࡓ

ᘼഃࡢࡶࡢࡣ࡜ࡾࢃࡅỿࡳ㎸ࡳᡂศࡀᑡ࡞ࡃ㸪

600 ୓ᖺ๓௨㝆࡟ỿࡳ㎸ࡳᡂศࡀほᐹࡉࢀࡿ㸬

MORB ࡸ OIB ࡟㏆࠸್ࢆᣢࡗࡓࡶࡢࡲ࡛ぢࡘ࠿2㸧ⅆᒣࣇࣟࣥࢺ࡛ỿࡳ㎸ࡳᡂศࡣ㢧ⴭ࡛࠶ࡿࡀ㸪ࡿ㸬⫼ᘼഃ࡛ࡣ࡯࡜ࢇ࡝ㄆࡵࡽࢀ࡞࠸㸬 Ba㸪Rb㸪K ࡜ B ࡛ỿࡳ㎸ࡳᡂศࡢẚ㍑ࢆࡋࡓ㸬3㸧௚ࡢᓥᘼ࡜ẚ࡭ࡿ࡜㸪஑ᕞࡢⅆᒣᒾࡣỿࡳ㎸⢭ᗘࢆ࠶ࡆࡓ࣐ࢵࣆࣥࢢࡢ⤖ᯝ㸪ᾏ⁁࠿ࡽෆ㝣࡟ࡳᡂศࡀᑡ࡞࠸㸬ࡇࢀࡣỿࡳ㎸ࡴࣉ࣮ࣞࢺࡢᖺ௦

ධࡿ࡟ᚑࡗ࡚ỿࡳ㎸ࡳᡂศࡀῶᑡࡍࡿᓥᘼᶓ᩿

ࡀẚ㍑ⓗⱝࡃ㸪⇕࠸ࡇ࡜ࢆ཯ᫎࡋ࡚࠸ࡿ㸬᪉ྥࡢኚ໬ࡀぢࡽࢀࡿࡢࡣ㸪஑ᕞ༡㒊ࡔࡅ࡛㸪ࡋ

4㸧໭㒊஑ᕞ࡜༡㒊஑ᕞࡢⅆᒣᒾࡢỿࡳ㎸ࡳᡂศ࠿ࡶ࣍࢘⣲ࡢࡳ࡛࠶ࡗࡓ㸦Fig. 4㸧㸬࣐ࣥࢺࣝࡢὶ

࡟ࡶࣉ࣮ࣞࢺࡢᖺ௦ࡢ㐪࠸ࡢᙳ㡪ࡀぢࡽࢀ㸪໭㒊య┦࡟࠾ࡅࡿࣔࣅࣜࢸ࢕㸦Mobility㸧ࡀ኱ࡁ࠸࣍

஑ᕞ࡟ࡣ࡯࡜ࢇ࡝ỿࡳ㎸ࡳᡂศࢆྵࡲ࡞࠸ⅆᒣ࢘⣲ࡢࡳ࡛㸪ឤᗘⰋࡃỿࡳ㎸ࡳᡂศࡢᙳ㡪ࡀぢࡽᒾࡀⅆᒣࣇࣟࣥࢺ࡟ㄆࡵࡽࢀࡿ㸬ࢀࡿࡇ࡜ࢆ☜ㄆࡋࡓ㸬

5㸧࣍࢘⣲ࡣ᭱ࡶឤᗘࡢⰋ࠸ỿࡳ㎸ࡳᡂศඖ⣲࡛࠶ࡿ㸬
JRR-3M, ༶Ⓨ࣐࢞ࣥ⥺ศᯒ⿦⨨㸪ᆅ⌫⛉Ꮫ

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JAEA-Review 2013-040

బ㔝㈗ྖ, ⚟ᒸᏕ᫛, 㛗㇂୰฼᫛, ⡿ἑ௰ᅄ㑻, ᯇỤ⚽᫂, ⃝ᖭᾈஅ, ༶ⓎȚ⥺࡟ࡼࡿⅆᒣᒾ୰࣍࢘⣲ࡢศᯒ㸸ࢣ࢖⣲ࢆ⏝࠸ࡓෆ㒊ᶆ‽ἲ, , RADIOISOTOPES, 47, 1998.
Sano T., T. Fukuoka, T. Hasenaka, C. Yonezawa, H. Matsue, and H.
Sawahata, Accurate and efficient determination of boron content involcanic rocks by neutron induced prompt gamma-ray analysis,
Journal of Radioanalytical and Nuclear Chemistry, 239, 613-617,
1999.

7㸬◊✲ᡂᯝࡢබ⾲Ꮫ఍ㄅ
Miyoshi, M., Shimono, M., Hasenaka, T., Sano, T., Mori, Y. andFukuoka, T., Boron systematics of Hisatsu and Kirishima basaltic
rocks from southern Kyushu, Japan. Geochemical Journal, 44,359-369., 2010.
Chapman, N., Apted, M., Beavan, J., Berryman, K., Cloos, M., Connor,C., Connor, L., Hasenaka, T., Jaquet, O., Kiyosugi, K., Litchfield,

Fig. 5 ࣍࢘⣲/ࢽ࢜ࣈẚᑐࢽ࢜ࣈྵ᭷㔞㸬N., Mahony, S., Miyoshi, M., Smith, W., Sparks, S., Stirling, M.,(a) ྂ࠸ⅆᒣᒾ㸪(b) ᪂ࡋ࠸ⅆᒣᒾ㸬໭㒊஑ᕞࡢⅆVillamor, P., Wallace, L., Goto, J., Miwa, T., Tsuchi, H.,ᒣᒾ⤌ᡂ࡜௚ࡢᓥᘼⅆᒣᒾࡢ⤌ᡂࡢᑐẚࢆヨࡳ

Kitayama,ࡓ㸬 K:༓ᓥᘼ㸪M:࣐ࣜ࢔ࢼᘼ㸪NEJ:ᮾ໭᪥ᮏᘼ㸪

identification of volcanic and tectonic hazards to potential HLW

MVB:࣓࢟ࢩࢥⅆᒣᖏ㸪C:࢟ࣕࢫࢣ࢖ࢻ㸪MORB:

repository sites in Japan -The Kyushu case study- NUMO୰ኸᾏᕊ⋞Ṋᒾ㸪OIB:ᾏὒᓥᆺ⋞Ṋᒾ㸦Miyoshi et(Nuclear Waste Management Organization of Japan) Report㸬al., 2008 ࡢᅗࢆᘬ⏝㸧

TR-09-02, 2009.

K.,

Developmentof

methodologies

for

the

Miyoshi, M., Shimono, M., Hasenaka, T., Sano, T., Fukuoka, T.,ㅰ㎡

Determination of boron contents in volcanic rocks by ୰ᛶᏊᨺᑕ໬ศᯒࢆ⾜࠺ୖ࡛ඹྠ฼⏝ᐇ㦂ィ

prompt-gamma ray analysis: an application to magma genesis in⏬㸪ヨᩱ‽ഛ㸪 ᐃჾ฼⏝࡞࡝࡟࠾࠸࡚⃝ᖭᾈஅ

Kyushu island, SW-Japan. Journal of Radioanalytical andẶ㸪ᕝᡭ⛱Ặ㸪▼ᮏග᠇Ặࢆࡣࡌࡵ࡜ࡍࡿ኱Ꮫ㛤

Nuclear Chemistry, 278, 343-347, 2008.

ᨺ◊✲ᐊࡢⓙᵝ࡟ࡣᐇ㦂㐙⾜࡟࠶ࡓࡗ࡚ከ኱ࡢ

Miyoshi, M., Nasu, T., Tajima, T., Kido, M., Mori, Y., Hasenaka, T.,࢔ࢻࣂ࢖ࢫ㸪ࡈ᥼ຓࢆཷࡅࡲࡋࡓ㸬ᐇ㦂୰࡟ࡣ᪥

Shibuya, H., Nagao, K., K-Ar ages of high-magnesian andesiteᮏཎᏊຊ◊✲㛤ⓎᶵᵓࡢᯇỤ⚽᫂༤ኈࡢࡈᣦᑟ

lavas from northern Kyushu, Japan. Journal of Mineralogical andࢆཷࡅࡲࡋࡓ㸪ศᯒ᪉ἲ࡟㛵ࡋ࡚❧ṇ኱Ꮫࡢ⚟ᒸ

Petrological Sciences, 103, 183-191, 2008.

Ꮥ᫛ᩍᤵ㸪ᅜ❧⛉Ꮫ༤≀㤋ࡢబ㔝㈗ྖ༤ኈ࡟ࡈᩍ

Miyoshi, M., Fukuoka, T., Sano, T. and Hasenaka, T., Subduction♧࠸ࡓࡔࡁ㸪ศᯒ⤖ᯝ࡟㛵ࡋ࡚ࡶ㆟ㄽࡋ࡚࠸ࡓࡔ

influence of Philippine Sea plate on the mantle beneath northernࡁࡲࡋࡓ㸬ⓙᵝࡢࢧ࣏࣮ࢺ࡞ࡃࡋ࡚ࡣᮏ◊✲ࡢ㐙

Kyushu, SW Japan: an examination of Boron contents in basaltic⾜ࡣ㞴ࡋ࠿ࡗࡓ࡜ᛮ࠸ࡲࡍ㸬῝ࡃឤㅰ࠸ࡓࡋࡲࡍ㸬rocks. Journal of Volcanology and Geothermal Research, 171,73-87, 2008.

6㸬ᘬ⏝ᩥ⊩㸦◊✲ᡂᯝ࡟ྵࡲࢀ࡚࠸࡞࠸ࡶࡢ㸧

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JAEA-Review 2013-040୕ዲ㞞ஓ㸪㛗㇂୰฼᫛㸪᳃ᗣ㸪ᒣୗⱱ㸪㜿⸽࢝ࣝࢹࣛす㒊࡟ศᕸୗ㔝ࡲ࡝࠿㸪୕ዲ㞞ஓ㸪㛗㇂୰฼᫛㸪⚟ᒸᏕ᫛㸪బ㔝㈗ྖ㸪᳃ᗣ㸪ࡍࡿᰣࣀᮌ⁐ᒾ୰࡟ࡳࡽࢀࡿ⤌ᡂ୙ᆒ㉁࡜ࡑࡢᡂᅉ㸬ᒾ▼஑ᕞⅆᒣᒾ⤌ᡂ࡟ࡳࡽࢀࡿỿࡳ㎸ࡳᡂศࡢ✵㛫ኚ໬㸸ᓥᘼ㖔≀⛉Ꮫ㸪᪥ᮏᒾ▼㖔≀㖔ᗋᏛ఍㸪36㸪15-29㸪2007㸬ୗ࣐ࣥࢺࣝ⤌ᡂ࡬ࡢࣇ࢕ࣜࣆࣥᾏࣉ࣮ࣞࢺࡢᐤ୚ࡢᗘྜ࠸㸪ᆅ⌫ᝨᫍ⛉Ꮫ㛵㐃Ꮫ఍㸪
2008 ᖺྜྠ኱఍㸪༓ⴥᖥᙇ࣓ࢵࢭ㸪

Ꮫ఍Ⓨ⾲

2008.

Hasenaka, T., Coexistence of shield volcanoes and small cones fromᇼ┤அ㸪୕ዲ㞞ஓ㸪㛗㇂୰฼᫛㸪㜿⸽୰ᓅ໭ᮾ㯄࡟ศᕸࡍࡿ⋞Ṋ

the Michoacan-Guanajuato volcanic field: their distribution, age,

ᒾ㉁ⅆ○ὶሁ✚≀ࡢᒾ▼Ꮫⓗ≉ᚩ㸪ᆅ⌫ᝨᫍ⛉Ꮫ㛵㐃Ꮫ఍㸪

magma output rate, and composition of magmas. 250th

2008 ᖺྜྠ኱఍㸪༓ⴥᖥᙇ࣓ࢵࢭ㸪2008.

anniversary of Volcan Jorullo’s birth in Michoacan, Mexico.

㛵ཱྀᝆᏊ㸪㛗㇂୰฼᫛㸪ጸⰋ࢝ࣝࢹࣛᙧᡂ࡟⮳ࡿ๓㥑ⓗ࡞࣐ࢢ࣐Morelia, Mexico, 2009άື㸸඲ᒾ໬Ꮫ⤌ᡂ࠾ࡼࡧ㖔≀⤌ᡂ࠿ࡽࡢไ⣙㸬᪥ᮏᆅ㉁⏣ᮧᬛᘺ, 㛗㇂୰฼᫛㸪㜿⸽ⅆᒣ୰ኸⅆཱྀୣ⩌㸪 ⏕ᓅ࠾ࡼࡧ୰
ᓅⅆᒣᄇฟ≀ࡢᒾ▼Ꮫⓗ◊✲ 㸬ᆅ⌫ᝨᫍ⛉Ꮫ㛵㐃Ꮫ఍㸪Ꮫ఍す᪥ᮏᨭ㒊⥲఍㸪⇃ᮏ኱Ꮫ㸪2008㸬୕ዲ㞞ஓ㸪ୗ㔝ࡲ࡝࠿㸪㛗㇂୰฼᫛㸪᪂ᮧኴ㑻㸪୰㒊஑ᕞ㜿⸽ᆅ

2009 ᖺྜྠ኱఍㸪༓ⴥᖥᙇ࣓ࢵࢭ㸪2009.

ᇦ࡟ศᕸࡍࡿ⋞Ṋᒾ㢮ࡢ࣍࢘⣲ྵ᭷㔞ࡢ᫬㛫ኚ໬㸬᪥ᮏᆅ㛵ཱྀᝆᏊ㸪㛗㇂୰฼᫛㸪ጸⰋ࢝ࣝࢹࣛⅆᒣ࡟ぢࡽࢀࡿ 3 ᅇࡢ࣐ࢢ࣐άືࢧ࢖ࢡࣝ 㸬ᆅ⌫ᝨᫍ⛉Ꮫ㛵㐃Ꮫ఍㸪2009 ᖺྜྠ኱㉁Ꮫ఍す᪥ᮏᨭ㒊⥲఍㸪⇃ᮏ኱Ꮫ㸪2008㸬㛵ཱྀᝆᏊ㸪㛗㇂୰฼᫛㸪㛗ᒸಙ἞㸪ጸⰋ࢝ࣝࢹࣛᙧᡂ࡟⮳ࡿ๓㥑఍㸪༓ⴥᖥᙇ࣓ࢵࢭ㸪2009.

ⓗ࡞࣐ࢢ࣐άື:࣐ࢢ࣐ΰྜࡢྍ⬟ᛶ㸪᪥ᮏⅆᒣᏛ఍⛅Ꮨ኱୕ዲ㞞ஓ, ᪂ᮧኴ㑻, ྂᕝ㑥அ, 㛗㇂୰฼᫛㸪㜿⸽ⅆᒣ࡟࠾ࡅࡿඛ
࢝ࣝࢹࣛᮇ࠿ࡽᚋ࢝ࣝࢹࣛᮇ࡬ࡢ࣐ࢢ࣐⤌ᡂࡢ᫬㛫ኚ໬㸬఍㸪ᒾᡭ኱Ꮫ㸪2008㸬
Miyoshi, M., Shimono, M., Hasenaka, T., Sano, T.,

Fukuoka, T.,ᆅ⌫ᝨᫍ⛉Ꮫ㛵㐃Ꮫ఍㸪
2009 ᖺྜྠ኱఍㸪༓ⴥᖥᙇ࣓ࢵࢭ㸪

Furukawa, K., and Shinmura, T., The evolving fluid flux from2009.

the subducting plate beneath Aso area: evidence from Boron in

Miyoshi, M.; Hasenaka, T.; Ryan, J. G.; Atlas, Z. D.; Shimono, M.;

volcanic products. Cities on Volcanoes 5, Shimabara, Japan,

Sano, T.; Fukuoka, T., Boron and trace element systematics of2007.

Quaternary basaltic rocks from Kyushu, Southwestern Japan,

Shimono, M., Miyoshi, T., Fukuoka, T., M., Sano, T. and Hasenaka, T.,

American Geophysical Union, Fall meeting, San Francisco,

Along-arc variation of Boron data: the influence of Philippine

2008.

Sea plate on the composition of mantle beneath Kyushu, SW

Sekiguchi, Y. andJapan arc. Cities on Volcanoes 5, Shimabara, Japan, 2007.

Hasenaka, T., Existence of felsic and mafic

magmas representing pre-caldera stage of Aira caldera volcano in

Hasenaka, T., Morinaga, M. and Miyoshi, M., Kusasenrigahama

southern Kyushu, Japan. American Geophysical Union, Fall

pumice cone from Aso volcano, Kyushu, Japan: Petrologicalmeeting, San Francisco, 2008.

characteristics of pumice and coeval volcanic products
representing one of the largest eruption after caldera-formation,

Miyoshi, M., Shimono, M., Hasenaka, T., Sano, T. and Fukuoka, T.,

Cities on Volcanoes 5, Shimabara, Japan, 2007.

Subduction influence of Philippine Sea plate on the mantle
beneath Kyushu, SW Japan: An examination of boron contents in

Sekiguchi, Y., Hasenaka, T., Nagaoka, S. and Mori, Y., The transition ofbasaltic rocks. IAVCEI General Assembly, Reykjavik, Iceland,

magma supply system between 100 and 29 ka at Aira caldera in2008.

southern Kyushu. Cities on Volcanoes 5, Shimabara, Japan,
2007.

Miyoshi, M., Shimono, M., Hasenaka, T., Sano, T. and Fukuoka, T.,
Subduction influence of Philippine Sea plate on the mantle

Sekiguchi, Y., Hasenaka, T., Nagaoka, S. and Mori, Y., Precursory

beneath Kyushu, SW Japan: An examination of boron contents inmagma activities leading to Aira caldera-forming eruptions inbasaltic rocks. 18th Goldschmidt Conference, Vancouver,southern kyushu, Japan, American Geophysical Union, Fall

Canada, 2008.

meeting, San Francisco, 2007.

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JAEA-Review 2013-040㛵ཱྀᝆᏊ㸪㛗㇂୰฼᫛㸪㛗ᒸಙ἞㸪᳃ᗣ㸪ጸⰋ࢝ࣝࢹࣛ࡟࠾ࡅࡿ
100-29ka ࡢ࣐ࢢ࣐౪⤥ࢩࢫࢸ࣒ࡢኚ㑄㸪ⅆᒣ㒔ᕷᅜ㝿఍㆟
5㸪ᓥཎ㸪2007㸬୕ዲ㞞ஓ㸪ୗ㔝ࡲ࡝࠿㸪㛗㇂୰฼᫛㸪బ㔝㈗ྖ㸪⚟ᒸᏕ᫛㸪໭㒊஑ᕞ⋞Ṋᒾ㢮୰ࡢ࣍࢘⣲ྵ᭷㔞ࡢ᫬㛫ⓗ࣭✵㛫ⓗኚ໬㸬᪥ᮏ㖔≀⛉Ꮫ఍㸪2007 ᖺᗘᖺ఍, ᮾி኱Ꮫ, 2007㸬
Miyoshi, M., Shimono, M., Hasenaka, T., Sano, T. and Fukuoka, T.,
Determination of boron contents in volcanic rocks byprompt-gamma ray analysis: an application to magma genesis in
Kyushu island, SW-Japan. 12th International Conference on
Modern Trends in Activation Analysis (MTAA-12), Tokyo, Japan,
2007.
Miyoshi, M., Shimono, M., Hasenaka, T., Sano, T., Fukuoka, T. andShinmura, T., Temporal changes of the subduction components
in volcanic products from Aso area, SW Japan. 17thGoldschmidt Conference, Koln, Germany, 2007.
Shimono, M., Miyoshi, M., Fukuoka, T., Sano, T. and Hasenaka, T.,
The influence of Philippine Sea plate on the composition of
mantle beneath Kyushu, SW Japan arc: Along-arc variation of B
data. 17th Goldschmidt Conference (Koln, Germany, 2007.
ዉ㡲㝯ᚿ㸪⏣ᓥಇᙪ㸪᳃ᗣ㸪㛗㇂୰฼᫛㸪῰㇂⚽ᩄ㸪㛗ᑿᩗ௓㸪໭㒊஑ᕞ࡟⏘ࡍࡿ㧗࣐ࢢࢿࢩ࢔Ᏻᒣᒾࡢ K-Ar ᖺ௦㸬ᆅ⌫ᝨᫍ⛉Ꮫ㛵㐃Ꮫ఍㸪2007 ᖺྜྠ኱఍㸪༓ⴥᖥᙇ࣓ࢵࢭ㸪2007.
㛵ཱྀᝆᏊ㸪㛗㇂୰฼᫛㸪㛗ᒸಙ἞㸪᳃ᗣ㸪ጸⰋ࢝ࣝࢹࣛ࡟࠾ࡅࡿ
100-29ka ࡢᄇฟ≀ࡢᒾ▼Ꮫⓗ≉ᚩ㸪ᆅ⌫ᝨᫍ⛉Ꮫ㛵㐃Ꮫ఍㸪
2007 ᖺྜྠ኱఍㸪༓ⴥᖥᙇ࣓ࢵࢭ㸪2007.
᳃Ọ㯞⾰Ꮚ㸪㛗㇂୰฼᫛㸪୕ዲ㞞ஓ㸪᳃ᗣ㸪㜿⸽ⲡ༓㔛ࣨ὾ⅆᒣᄇฟ≀ࡢᒾ▼Ꮫⓗ≉ᚩ㸬ᆅ⌫ᝨᫍ⛉Ꮫ㛵㐃Ꮫ఍㸪2007 ᖺྜྠ኱఍㸪༓ⴥᖥᙇ࣓ࢵࢭ㸪2007.
୕ዲ㞞ஓ㸪᪂ᮧኴ㑻㸪Ⲩᕝὒ஧㸪㛗㇂୰฼᫛㸪⇃ᮏ┴୰㒊ࡢᮌᒣኚᡂᒾ㢮-ᚚ⯪ᒙ⩌ቃ⏺㒊࠿ࡽぢฟࡉࢀࡓࣆࢡࣛ࢖ࢺ㉁⋞Ṋᒾ㸬ᆅ⌫ᝨᫍ⛉Ꮫ㛵㐃Ꮫ఍㸪2007 ᖺྜྠ኱఍㸪༓ⴥᖥᙇ࣓ࢵࢭ㸪2007.

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JAEA-Review 2013-040

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JAEA-Review 2013-040

4-1୰ᛶᏊᨺᑕ໬ศᯒ࡟ࡼࡿᏱᐂ࣭ᆅ⌫໬Ꮫ≀㉁ࡢ◊✲㸦ϩ㸧
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ⓗ࡛࠶ࡿ㝹▼ࡢⴠୗᅇᩘࡢ᫬㛫ኚ໬ࢆࡳࡿ࡟ࡣࠊ

ᮏ◊✲ࡣ㝹▼ࠊᏱᐂሻࠊⅆᒣ⅊ࠊἙᕝ◁ࢆヨⴠୗᖺ௦ࢆồࡵࡓ㝹▼ヨᩱ࡟ࡘ࠸࡚┿ࡢⴠୗᅇᩱ࡜ࡋࠊᏱᐂ໬ᏛࠊⅆᒣᏛࠊ⎔ቃ໬Ꮫࡢศ㔝ࡢ◊ᩘࢆ▱ࡿᚲせࡀ࠶ࡿࠋࡑࡇ࡛ࠊ㝹▼ࡢࠕ࣌࢔ࣜࣥ

✲ࢆ┠ⓗ࡜ࡋ࡚࠸ࡿࠋࡇࡇ࡛ࡣࠊࡇࢀࡽࡢ࠺ࡕࠊ

ࢢࠖࡀᚲせ࡟࡞ࡿࠋ࣌࢔ࣜࣥࢢ࡜ࡣࠊᮏ᮶୍ಶ࡛

㝹▼ࡢⴠୗᖺ௦

࠶ࡿ㝹▼ࡀᆅ⌫࡟✺ධࡋࡓ࡜ࡁ࡟」ᩘ࡟ቯࢀ࡚

ᐃ࡟㛵㐃ࡋࡓ◊✲ࠊᏱᐂሻࡢ㝆ୗ㔞࡟ࡘ࠸࡚ࡢ◊✲ࠊᇦ⛛∗ᆅ᪉Ⲩᕝୖὶᇦࡢᆅ

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⌫໬Ꮫᅗసᡂ࡟ࡘ࠸࡚ࡢ◊✲࡟ࡘ࠸࡚ሗ࿌ࡍࡿࠋ

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࡞࡝ࡢᑐẚࡀ⏝࠸ࡽࢀࡿࠋᮏ◊✲࡛ࡣࠊ$O ྵ᭷,,ࡣࡌࡵ࡟

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,,ᮏ◊✲࡟࠾ࡅࡿ࣌࢔ࣜࣥࢢࡢᇶ‽ᮏ◊✲࡟࠾ࡅࡿ $Oࠊ0Jࠊ&D ྵ᭷㔞࡟ᇶ࡙࠸ࡢⴠୗᅇᩘࡢ᫬㛫ኚ໬㸧ࢆ▱ࡿࡇ࡜࡛࠶ࡿࠋ㝹▼ࡓ࣌࢔ࣜࣥࢢࡢᇶ‽ࡣ௨ୗࡢ㏻ࡾ࡛࠶ࡿࠋ

ࡣẕኳయ࡟௚ࡢ㝹▼ࡀ⾪✺ࡍࡿࡇ࡜࡛⏕ࡌࡿࡢ࡛ࠊ㝹▼ࡢⴠୗᅇᩘࡢ᫬㛫ኚ໬ࡣẕኳయ࡟࠾ࡇࡗ

>$O ྵ᭷㔞@$O ࡢ⏕ᡂ㔞ࡣࠊᆅ⌫࡟ⴠୗࡓ⾪✺ࡢ᫬ᮇ࡜㛵ಀࡍࡿ࡜⪃࠼ࡽࢀࡿࠋヨᩱࡣࠊࡋࡓᖺ௦ࠊᏱᐂ⥺ࡢᶆⓗ࡟࡞ࡿඖ⣲⤌ᡂࠊᏱᐂ⥺༡ᴟ࡛᥇㞟ࡉࢀࡓ +(' 㝹▼㸦ᑠᝨᫍ 9HVWD ࡀ㉳※ࡢ↷ᑕ᮲௳࡞࡝࡛ኚ໬ࡍࡿࠋࡋࡓࡀࡗ࡚ࠊྠ୍ࡢ

ࡔ࡜࠸ࢃࢀ࡚࠸ࡿ KRZDUGLWHࠊHXFULWHࠊGLRJHQLWH

㝹▼࡛࠶ࢀࡤ $O ࡀ⏕ᡂࡉࢀࡿ᮲௳ࡀྠࡌ࡞ࡢ࡛

㝹▼ࡢ⥲⛠ࠊ
௨ୗ༡ᴟ +(' 㝹▼࡜࿧ࡪ㸧ࢆ⏝࠸ࡿࠋࡑࡢ㔞ࡣ୍ᐃ࡛࠶ࡿ࡜⪃࠼ࡽࢀࡿࠋࡓࡔࡋࠊྠ୍

ࡇࢀࡲ࡛࡟ࠊ ಶࡢ༡ᴟ +(' 㝹▼࡟ࡘ࠸࡚ⴠୗᖺ

ࡢ㝹▼࡛ࡶ㐽ⶸຠᯝ࡞࡝ࡢ↷ᑕ᮲௳࡛ $O ྵ᭷㔞ᐃࢆ┠ⓗ࡟Ᏹᐂ⥺⏕ᡂ᰾✀࡛࠶ࡿ $O㸦༙ῶ࡟ ⛬ᗘࡢࡤࡽࡘࡁࡀ⏕ࡌࡿࡇ࡜ࡀ࠶ࡿࡢ࡛ࠊ௦ᮇ  ᖺ㸧ࢆᐃࡋࡓࠋᮏ◊✲࡛ࡣ ࡢ⠊ᅖෆ୍࡛⮴ࡋࡓࡶࡢࢆ࣌࢔࡜

࡜ࡇࢁ࡛ࠊ㝹▼ࡣ኱Ẽᅪ✺ධ᫬ࡸᆅ⾲㠃࡟⾪ࡋࡓࠋ✺ࡋࡓ࡜ࡁ࡟࠸ࡃࡘ࠿࡟ቯࢀࡿࡇ࡜ࡀ࠶ࡿࠋࡋࡓ

>୺ᡂศ໬Ꮫ⤌ᡂ@+(' 㝹▼ࡢẕኳయࡣࠊ⁐ࡀࡗ࡚ࠊᐇ㝿࡟㝹▼ࡀⴠୗࡋࡓᅇᩘࡣ᥇㞟ࡉࢀࡓ

⼥ࡋ࡚ศ໬ࡋ࡚࠸ࡿࡢ࡛ࠊሙᡤ࡟ࡼࡗ࡚໬Ꮫ⤌ᡂᩘࡼࡾࡶࡎࡗ࡜ᑡ࡞࠸࡜⪃࠼ࡽࢀࡿࠋᮏ◊✲ࡢ┠ࡀ␗࡞ࡿࠋ୺ᡂศඖ⣲ࡢ࡞࠿࡛ࡣࠊ0J ࡜ &D ࡣศ

JRR-3ࠊPN-1ࠊPN-3ࠊJRR-4ࠊHRࠊS ࣃ࢖ࣉࠊT ࣃ࢖ࣉࠊᨺᑕ໬ศᯒ㸦Ᏹᐂ࣭ᆅ⌫໬Ꮫศ㔝㸧- 223 -

㻠㻣

JAEA-Review 2013-040໬㐣⛬࡟ࡼࡿྵ᭷㔞ࡢኚ໬ࡀࢃ࠿ࡾࡸࡍ࠸ࠋᮏ◊,,ࡲ࡜ࡵ ಶࡢ༡ᴟ +(' 㝹▼࡟ࡘ࠸࡚ $Oࠊ0Jࠊ&D✲࡛ࡣࠊ0Jࠊ&D ྵ᭷㔞ࡀィᩘㄗᕪ㸦Ȫ㸧⠊ᅖෆ୍࡛⮴ࡋࡓࡶࡢࢆ࣌࢔࡜ࡋࡓࠋ

ࢆ฼⏝ࡋࡓ࣌࢔ࣜࣥࢢࢆ⾜࠸ࠊᩥ⊩ࡢ࣌࢔ࣜࣥࢢ

ࢹ࣮ࢱࡶࡩࡲ࠼ࡿ࡜᭱⤊ⓗ࡟  ಶࡢ࣌࢔࡟ࢃࡅ

,,㝹▼ࡢ $Oࠊ0Jࠊ&D ࡢศᯒ㝹▼ࡢ $O ྵ᭷㔞ࡣ $06㸦ຍ㏿ჾ㉁㔞ศᯒ㸧ࡿࡇ࡜ࡀ࡛ࡁࡓࠋᮏ◊✲ࡢ࣌࢔ࣜࣥࢢࡢ⤖ᯝ࡟㝹ἲ࡛ ᐃࢆ⾜ࡗࡓࠋ$06 ἲࡢヨᩱ⢭〇ἲࡣ .XVXQR▼ࡢ↷ᑕᖺ௦ࠊ㐽ⶸຠᯝࠊᚤ㔞ඖ⣲⤌ᡂ࡞࡝ࡢࢹ

HWDO  ࡟ᚑࡗࡓࠋ$06 ἲ࡟ࡼࡿ $O ྵ᭷࣮ࢱࢆຍ࠼ࡿࡇ࡜࡛ࠊࡼࡾಙ㢗ᛶࡢ㧗࠸࣌࢔ࣜࣥ㔞ࡢ ᐃࡣ 0$/7 0LFUR$QDO\VLV/DERUDWRU\ࢢࢆỴᐃࡍࡿࡇ࡜ࡀ࡛ࡁࡿ࡜⪃࠼ࡽࢀࡿࠋࡇࡢ⤖WKH8QLYHUVLW\RI7RN\R ࡛⾜ࡗࡓࠋ0Jࠊ&D ྵᯝ࠿ࡽࠊⴠୗᅇᩘࡢ᫬㛫ኚ໬ࢆࡳࡿ࡟ࡣࠊ⤫ィୖ᭷㔞ࡣ ,1$$ ࡛ศᯒࡋࡓࠋ୰ᛶᏊ↷ᑕࠊȚ⥺ ᐃ ಶ௨ୖࡢ㝹▼ヨᩱ࡟ࡘ࠸࡚ⴠୗᖺ௦ࢆồࡵࡿࡣ᪥ᮏཎᏊຊ◊✲ᶵᵓ -550 ⅔ෆᐇ㦂ᐊ࡛⾜ࡗᚲせࡀ࠶ࡿ࡜⪃࠼ࡽࢀࡿࠋ

ࡓࠋ,, ಶࡢ༡ᴟ +(' 㝹▼ࡢ࣌࢔ࣜࣥࢢ

㻭
㻮
㻯
㻰

100

 ಶࡢ KRZDUGLWH 㝹▼ࠊ ಶࡢ HXFULWH 㝹▼ࠊ

䜶䝷䞊
䠄2ı䠅

80



 ಶࡢ GLRJHQLWH 㝹▼ࢆࡑࢀࡒࢀࠊ $Oࠊ0Jࠊ&Dྵ᭷㔞ࠊ࡟ᇶ࡙࠸࡚࣌࢔ࣜࣥࢢࢆ⾜ࡗࡓࠋ᭱⤊ⓗ60࡟ࠊᮏ◊✲ࡢ⤖ᯝ࡟ᩥ⊩ࡢ࣌࢔ࣜࣥࢢࢹ࣮ࢱࢆྜ
0.2

0.4

0.6

0.8

1

Ca/Mg

ࢃࡏࡓ࣌࢔ࣜࣥࢢࢆ⾜ࡗࡓࠋ







>KRZDUGLWH 㝹▼@  ヨᩱ㸦$ $Oྵ᭷㔞ࡀప࠸
ヨᩱࠊ&0J ࡟ᐩࢇࡔヨᩱࠊ'&D ࡟ᐩࢇࡔヨᩱ㸧ᅗ ,, $Oࠊ0Jࠊ&D ྵ᭷㔞࡟ᇶ࡙ࡃ༡ᴟ KRZDUGLWH 㝹▼ࡢ࣌࢔ࣜࣥࢢ ಶࡢ༡ᴟ KRZDUGLWH 㝹▼ࡣ $ࠊ%ࠊ&ࠊ' ࡟ศ㢮࡛ࡁࡿࠋ
110ࢆ㝖ࡃ  ヨᩱ࡟ࡘ࠸࡚ࡣ $Oࠊ0Jࠊ&D ྵ᭷㔞࡛ࡣ

㻭
㻮
㻭㻛㻮

100

ྠ୍ࡢ࣌࢔࡛࠶ࡿࡇ࡜ࡀࢃ࠿ࡗࡓ㸦ᅗ ,,㸧ࠋ䜶䝷䞊䠄2ı䠅90>HXFULWH 㝹▼@ $Oྵ᭷㔞࡟ᇶ࡙ࡃ࡜ࠊ ࡘࡢ80࣌࢔࡟ࢃ࠿ࢀࡓࠋ ヨᩱࡣ࡝ࢀࡶఝࡓ &Dࠊ0J ྵ

70᭷㔞ࢆ♧ࡋࡓࡢ࡛ࠊ $Oྵ᭷㔞࡟ࡼࡿ࣌࢔ࣜࣥࢢ

60࡟ᇶ࡙ࡁ  ࣌࢔㸦$ࠊ%㸧࡜ࡋࡓ㸦ᅗ ,,㸧ࠋ

50
0.5

1

1.5

2

2.5



Ca/Mg

ᮏ◊✲ࡢ⤖ᯝ࡟ࠊ㖔≀⤌ᡂࠊ㖔≀ࡢ໬Ꮫ⤌ᡂࠊ

.U ᖺ௦࡟ᇶ࡙࠸ࡓᩥ⊩ࡢ࣌࢔ࣜࣥࢢࢹ࣮ࢱ

㸦'HODQH\HWDO7DNHGD0LXUDHWᅗ ,,$Oࠊ0Jࠊ&D ྵ᭷㔞࡟ᇶ࡙ࡃ༡ᴟ HXFULWH 㝹▼ࡢ࣌࢔ࣜࣥࢢ ಶࡢ༡ᴟ HXFULWH 㝹▼ࡣ $ࠊ% ࡟ศ㢮࡛ࡁࡿࠋ$% ࡣ $ ࡜ࡶ %࡜ࡶࡘ࠿࡞࠸ࡇ࡜ࢆ♧ࡍࠋ
100

DO1,35㸧ࢆྜࢃࡏࡓ࡜ࡇࢁ㸦⾲

㻭
㻭㻛㻮

90

,,㸧ࠊ᭱⤊ⓗ࡟  ࣌࢔࡟࡞ࡗࡓࠋ

㻮
㻯

80

>GLRJHQLWH 㝹▼@  ヨᩱࡣ୺࡟ࠊ0J ࡟ᐩࢇࡔヨ70

ᩱࠊ&D ࡟ᐩࢇࡔヨᩱࡢ  ࡘ࡟ࢃࡅࡿࡇ࡜ࡀ࡛ࡁࡓࠋ

60 ヨᩱࡔࡅࡀ᫂ࡽ࠿࡟ప࠸ $Oྵ᭷㔞ࢆ♧ࡋࡓࡢ

50

䜶䝷䞊䠄2ı䠅40

࡛ࠊ ࡘ㸦$ࠊ%ࠊ&㸧࡟ศ㢮ࡋࡓ㸦ᅗ ,,㸧ࠋᮏ◊✲ࡢ⤖ᯝ࡟㖔≀ࡢᏑᅾᗘࠊ㖔≀ࡢ໬Ꮫ⤌ᡂ࡟ᇶ࡙࠸ࡓᩥ⊩ࡢ࣌࢔ࣜࣥࢢࢹ࣮ࢱ㸦'HODQH\
HWDO7DNHGD1,35㸧ࢆྜ

0

0.1

0.2

Ca/Mg

0.3



ᅗ ,,$Oࠊ0Jࠊ&D ྵ᭷㔞࡟ᇶ࡙ࡃ༡ᴟ GLRJHQLWH 㝹▼ࡢ࣌࢔ࣜࣥࢢ ಶࡢ༡ᴟ GLRJHQLWH 㝹▼ࡣ $ࠊ%ࠊ& ࡟ศ㢮࡛ࡁࡿࠋ$% ࡣ $ ࡜
ࡶ % ࡜ࡶࡘ࠿࡞࠸ࡇ࡜ࢆ♧ࡍࠋࢃࡏࡿ࡜㸦⾲ ,,㸧ࠊ᭱⤊ⓗ࡟  ࣌࢔࡟࡞ࡗࡓࠋ

JRR-3ࠊPN-1ࠊPN-3ࠊJRR-4ࠊHRࠊS ࣃ࢖ࣉࠊT ࣃ࢖ࣉࠊᨺᑕ໬ศᯒ㸦Ᏹᐂ࣭ᆅ⌫໬Ꮫศ㔝㸧4-1- 224 -

㻠㻤

JAEA-Review 2013-040

⾲ ,,$Oࠊ0Jࠊ&Dࠊᩥ⊩ࡢ࣌࢔ࣜࣥࢢ࡟ᇶ࡙ࡃ༡ᴟ HXFULWH㝹▼ࡢ࣌࢔ࣜࣥࢢ
26

Al, Ca,meteorite
name*1Y-790122
Y-790260
Y-790266
Y-791186
Y-74159
Y-74450
Y-75011
Y-75015
Y-790007
Y-790020
Y-793548
Y-792510
Y-792769
Y-793164
Y-791826
Y-791960
Y-82091
Y-793591
Y-794002
Y-82066
Y-82082
Y-793547
Y-794043
Y-791195*1

This work.

Mineral*2*2

Mg content
A/B
A/B
A
A/B
B
B
A/B
A/B
B
B
B
A/B
A/B
B
A/B
B
B
A/B
B
B
A/B
B
A/B
B

Chemistry

Takeda (1991).

*3

81

Kr age*3䕕ᆅ⌫እ⢏Ꮚ࡛࠶ࡿᏱᐂሻࡢ㉳※ࡣࠊ୺࡟ᙟᫍࡸ

*4

Lithologyᑠᝨᫍ࡜⪃࠼ࡽࢀ࡚࠸ࡿࠋࡑࡢᏱᐂሻࡢᆅ⌫࡬ࡢ

polymictpolymictpolymict
monomictpolymictpolymictpolymictpolymictpolymictpolymictpolymict

䕧
䕧
䕧
䕺
䕦
䕦
䕦
䕦
䕦
䕦
䕦
䕺
䕱
䕱
䕻
䕻
䕻

䕿
䕿
䕔
䖃
䖃
䖃
䖃
䖃
䖃
䖃
䕔
䖪
䖪

,,,༡ᴟࢻ࣮࣒ )XML ษ๐ị࠿ࡽࡢᏱᐂሻᅇ཰

㝆ୗ㔞ࡣࠊᖺ㛫  㹼 ࢺࣥ࡜ゝࢃࢀ࡚࠸ࡿ
%DUNHUDQG$QGHUV ࠋࡇࢀࡔࡅ኱㔞࡟㝆ୗࡋ࡚࠸ࡿᏱᐂሻࡀ㐣ཤ࡟࡝ࡢࡼ࠺࡞᫬㛫ኚ໬ࢆࡋ࡚࠸ࡓ࠿ࢆồࡵࡿࡇ࡜ࡣኴ㝧⣔ࡢ㐍໬ࢆ▱ࡿୖ࡛ࡣ㔜せ࡞ࢸ࣮࣐࡛࠶ࡾࠊ㐣ཤ࡟ᙟᫍࡸᑠᝨᫍ
ࡢ᥋㏆ࡀ࠶ࡗࡓ᫬ᮇࢆ▱ࡿࡇ࡜ࡀ࡛ࡁࡿࠋࢻ࣮࣒

polymict)XML ࡛ࡣࠊᆅᙧୖ✚ࡶࡗࡓ㞷ࡀᆶ┤࡟ሁ✚ࡋ࡚࠸ࡿࠋࡑࡢࡓࡵࠊịᗋࢥ࢔ࡢ㛗ࡉ࠿ࡽᖺ௦ࢆ㏣࠺ࡇ࡜ࡀྍ⬟࡛࠶ࡿࠋࡇࡇ࡛ࡣࠊ᭱⤊┠ⓗࢆ㐩ᡂࡍࡿࡓࡵࡢ➨୍ẁ㝵࡜ࡋ࡚Ᏹᐂሻࢆịᗋ࠿ࡽᅇ཰ࡍ
polymict
monomict
cumulate䖂
Miura et al. (1993).

*4ࡿࡇ࡜ࢆ┠ⓗ࡜ࡋࡓࠋࢻ࣮࣒ )XML ࢥ࢔ࡣ㝆ୗ㔞ࢆồࡵࡿୖ࡛᭷⏝࡞ヨᩱ࡛࠶ࡿࡀࠊከࡃࡢྂ⎔ቃ

NIPR (1995) ᝟ሗࢆಖᣢࡋ࡚࠸ࡿࡓࡵࠊࡍ࡭࡚⏝࠸ࡿࡇ࡜ࡣ࡛


0Jࠊ&Dࠊᩥ⊩ࡢ࣌࢔ࣜࣥࢢ࡟ᇶ࡙ࡃ༡ᴟ GLRJHQLWH
⾲ ,,$Oࠊ㝹▼ࡢ࣌࢔ࣜࣥࢢ

ࡁ࡞࠸ࠋࡑࡇ࡛᥀๐᫬࡟ྠࡌ῝ᗘ࠿ࡽ࠿ࡁฟࡉࢀ

Meteorite
nameY-791194
Y-791199

26

Al, Ca,*1

Mg content
A
A/B

MineralChemistry

Lithology

a

*2,3

A

ࡿ๐ࡾ࢝ࢫࡢሢ࡛࠶ࡿษ๐ị㸦῝ࡉ P ࡢ⣙
NJ㸧ࢆ⏝࠸ࡓࠋ*4 ษ๐ị࡟ࡣ኱㔞ࡢᆅ⌫㉳※⢏Ꮚࡀྵࡲࢀ࡚࠸

Y-791000

A/B

a

*2,3

A

ࡿ ⾲Ϫ ࠋࡇࢀࡽ࡜Ᏹᐂሻࢆຠ⋡ࡼࡃศูࡋ࡞

Y-791422

B

a

*2,3

A

Y-791200

B

a

*2,3

A

ࡀࡽᅇ཰ࡋ࡚࠸ࡃࡓࡵࡢᅇ཰ἲࢆ⪃᱌ࡋࡓࠋ

*2,3

A

*2

B

*2

B

*2

B

*2

B

Y-75032

Ba

Y-74037Cb

Y-74097Cb

Y-74013Cb

Y-74136

C

b

Y-692

C

a

*2,3

Y-74125

C

a

*2,3

Y-74010

C

a

*2,3

Y-74011

C

a

*2,3

Y-74648

C

a

*2,3

*1

This work.

*2

Takeda (1991).

*3 ษ๐ịࡣᅜ❧ᴟᆅ◊✲ᡤ෭෾ᐊ 㸫Υ ࡛ಖ⟶ࡉࢀ࡚࠸ࡓࠋࡇࢀࢆ⢒ࡃ○ࡁࠊᛴ⃭࡞ịࡢᐦᗘኚ໬࡛Ᏹᐂሻࡀቯࢀ࡞࠸ࡼ࠺࡟ࠊ❧ṇ኱Ꮫࡢࢧࣥࣉ
ࣝಖ⟶ᐊ ᐊ

⼥ゎỈࢆ✰ᚄ ȣP ࡢ࣏࣮ࣜ࢝࣎ࢿ࣮ࢺࣇ࢕ࣝ
ࢱ࣮࡛྾ᘬࢁ㐣ࡋࡓࠋࡇࡢẁ㝵࡛᥀๐᫬࡟ΰධࡋ
ࡓ୙෾ᾮ㸦㓑㓟ࣈࢳࣝ㸧ࡣỈ࡜࡜ࡶ࡟㝖ཤࡉࢀࡓࠋ

Delaney et al. (1983).

ᅛᙧ≀ࡢṧࡗࡓࣇ࢕ࣝࢱ࣮ࢆࠊỈࡢධࡗࡓࣅ࣮࢝

*4

NIPR (1995), A : characteristic granoblastic texture; B :characteristic intermediate composition between diogenites andeucrites.

Υ ࡛ࡺࡗࡃࡾ⮬↛⼥ゎࡉࡏࡓࠋ࣮࡟ධࢀ㉸㡢ἼὙίჾࢆ⏝࠸࡚ࠊᅛᙧ≀ࢆࣇ࢕ࣝࢱ࣮࠿ࡽ๤㞳ࡋࡓࠋᅛᙧ≀ࢆࣅ࣮࣮࢝୰࡛ࢹ࢝ࣥ

ࢸ࣮ࢩࣙࣥࢆ ࠊࠊ ⛊࡜㸱ᅇ⾜࠸ᾋ㐟≀ ୺࡟⧄⥔ࠊᮌᒌ ࢆྲྀࡾ㝖࠸ࡓࠋ᭱ᚋ࡟  ⛊㛫ࡢࢹ࢝ࣥࢸ࣮ࢩࣙࣥࢆ⾜࠸ࠊỿ㝆≀࡜ᾋ㐟≀ࢆࡑࢀࡒࢀᅇ཰ࡋࡓࠋᏱᐂሻࡣ㔠ᒓ㕲ࢆྵࢇ࡛࠸ࡿࡓࡵࠊ

ỿࡳࡸࡍ࠸࡜⪃࠼ỿ㝆≀࠿ࡽࡢᅇ཰ࢆ➨୍࡟ヨࡳࡓࠋỿ㝆≀ࢆẚ㔜  ࡢࣚ࢘໬࣓ࢳ࡛ࣞࣥ㔜ᾮศ㞳ࢆ⾜ࡗࡓᚋࠊ☢ᛶ࡟ࡼࡿศ㞳 ࣁࣥࢻ࣐ࢢࢿ

ࢵࢺ࡟╔ࡃ㸸᭷ࠊ╔࠿࡞࠸㸸↓ ࢆ⾜ࡗࡓࠋJRR-3ࠊPN-1ࠊPN-3ࠊJRR-4ࠊHRࠊS ࣃ࢖ࣉࠊT ࣃ࢖ࣉࠊᨺᑕ໬ศᯒ㸦Ᏹᐂ࣭ᆅ⌫໬Ꮫศ㔝㸧4-1- 225 -

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JAEA-Review 2013-040

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㻝㻕☢▼䛻௜䛟䛛௜䛛䛺䛔䛛䛷ุ᩿䛧䛯䠊ศ໬䛧䛯Ᏹᐂሻ䛿୙᫂䠊Ᏹᐂሻࡀ㞟ࡲࡾࡸࡍ࠸ࣇࣛࢡࢩࣙࣥ࠿ࡽᏱᐂሻ

ϫ㸬⛛∗ࠊⲨᕝୖὶᇦࡢᆅ⌫໬Ꮫᅗ࡜ᛮࢃࢀࡿ⢏Ꮚࢆᐇయ㢧ᚤ㙾ୗ࡛ࣁࣥࢻࣆࢵࢡ

ϫ ❧ṇ኱Ꮫ࡟࠾ࡅࡿᆅ⌫໬Ꮫᅗసࡾ

ࡋࡓࠋᆅ⌫໬ᏛᅗࡣᆅẆ⾲ᒙ࡟࠾ࡅࡿඖ⣲ࡢ⃰ᗘ ࣁࣥࢻࣆࢵࢡࡋࡓ⢏Ꮚࢆ 6(0('6 ࡛ᙧែほᐹ࡜ศᕸࢆ♧ࡍࡶࡢ࡛ࠊ⮬↛⎔ቃࡢ໬Ꮫⓗࣂࢵࢡࢢࣛ

ᐃᛶศᯒࢆ⾜ࡗࡓࠋ)H㸪1L㸪6L㸪0J㸪6 ࡀ☜ㄆ࡛ࡁ࢘ࣥࢻࡢ᝟ሗࢆᚓࡿࡇ࡜ࡀ࡛ࡁࠊேⅭⓗ⎔ቃኚ໬ࡓ⢏Ꮚࢆ ,1$$ ᶵჾ୰ᛶᏊᨺᑕ໬ศᯒ ࡛ぶ▼ඖࢆホ౯ࡍࡿୖ࡛ࡢᣦᶆ࡜࡞ࡿࠋࡍ࡞ࢃࡕࠊᆅ⌫໬⣲ $O㸪7L㸪&D㸪9㸪0J㸪&U㸪0Q㸪1D ࠊᕼᅵ㢮ඖ⣲ /D㸪Ꮫᅗ࠿ࡽ⮬↛㸦ᆅ㉁㸧᝟ሗࠊ㈨※࡜ࡋ࡚ࡢ᝟ሗࠊ

6P㸪(X㸪<E㸪/X㸪6F ࠊぶ㕲ඖ⣲ ,U㸪)H㸪&R㸪$X ࢆ⎔ቃởᰁ᝟ሗࢆᚓࡿࡇ࡜ࡀ࡛ࡁࡿࠋ
ᆅ⌫໬Ꮫᅗࡢసᡂ࡟ࡣࠊ⣙㸯NP ࡟㸯ᆅⅬࡢศᯒࡋࡓࠋ
 $X ࡜ ,U ࡣᏱᐂ≀㉁࡛࠶ࡿ࠿ྰ࠿ࢆุᐃࡍࡿࡢ

Ἑᕝ◁ࢆ᥇ྲྀࡋࠊ✀ࠎࡢ໬Ꮫศᯒࢆ⾜࠸ࠊࡑࡢศ࡟㔜せ࡞ඖ⣲࡛࠶ࡿࡀࠊ୧᪉ࡢඖ⣲ࢆ☜ㄆ࡛ࡁࡓᯒ⤖ᯝࢆඖ⣲ࡈ࡜࡟ᆅᅗ໬ࡋ࡚࠸ࡃࠋ
❧ṇ኱Ꮫᆅ⌫⎔ቃ⛉Ꮫ㒊Ᏹᐂᆅ⌫໬Ꮫ◊✲

ヨᩱࡀ࡞ࡃࠊ࠿ࡘ඲యⓗ࡟್ࡀప࠸ഴྥ࡜࡞ࡗࡓࠋ
ࣁࣥࢻࣆࢵࢡࡋࡓ඲࡚ࡢ⢏Ꮚ࡟ࡣ 6(0('6 ࡟ࡼࡾᐊ࡛ࡣࠊ ᖺᗘ࠿ࡽࠊᇸ⋢┴す㒊࡟఩⨨ࡍࡿ⛛᥀๐࣡࢖࣮ࣖࡢ࣓ࢵ࢟࡟౑ࢃࢀ࡚࠸ࡿ =Q ࡢࣆ࣮∗ᆅ᪉ࡢⲨᕝୖὶᇦ㸦ᅗϫ㸧࡟࠾ࡅࡿᆅ⌫໬Ꮫࢡࡀ☜ㄆ࡛ࡁࡓࠋ$X㸪,U ࡣࡇࡢ =Q ࡟ࡼࡿởᰁ࠿ࡽᅗࢆసᡂࡋ࡚ࡁࡓࠋ໬Ꮫศᯒἲ࡜ࡋ࡚ࡣ⺯ග ; ⥺᮶ࡓྍ⬟ᛶࡶ⪃࠼ࡽࢀࡿࠋࡋࡓࡀࡗ࡚ᮏ◊✲࡛ᅇศᯒ㸦;5)㸧ࠊ୰ᛶᏊᨺᑕ໬ศᯒ㸦,1$$㸧ࠊ༶ⓎȚ཰࣭ศᯒࡉࢀࡓ⢏ᏊࡀᏱᐂሻ࡛࠶ࡿ࡜࠸࠺☜ドࡣ⥺ศᯒ㸦3*$㸧ࠊ࣮ࣞࢨ࣮࢔ࣈ࣮ࣞࢩࣙࣥㄏᑟ⤖ྜᚓࡽࢀ࡞࠿ࡗࡓࠋ

ࣉࣛࢬ࣐㉁㔞ศᯒ㸦/$,&306㸧࡛ྜィ  ඖ⣲ࢆ௨ୖࠊ᭱⤊┠ⓗ࡟ࡣࡑࢀࡒࢀ฿㐩ࡋ࡞࠿ࡗࡓࡀࠊ

ศᯒࡋ࡚࠸ࡿ㸦㟷ᮌ࣭௚ 㸧ࠋࡇࡇ࡛ࡣࠊ㹼 ᖺᗘ࡟᥇ྲྀࡋࡓ  ヨᇶ♏ⓗ࡞᝟ሗࡣᚓࡿࡇ࡜ࡀ࡛ࡁࡓࠋ௒ᚋࡶ⥆ࡅ࡚࠸ࡃィ⏬࡛࠶ࡿࠋ

ᩱࢆ ,1$$ ࡛ศᯒࡋࡓ⤖ᯝࢆ୰ᚰ࡟ሗ࿌ࡍࡿࠋ
ϫ ⤖ᯝ࡜⪃ᐹϫᅗ  ࡟ &U ࡢᆅ⌫໬Ꮫᅗࢆ ;5) ࡛ᚓࡽࢀࡓ



0J ࡜ 1L ࡢᆅ⌫໬Ꮫᅗ࡜࡜ࡶ࡟♧ࡋࡓࠋϫᅗ  ࡟ࡣ $Xࠊ$Vࠊ6E ࡢᆅ⌫໬Ꮫᅗࢆ♧ࡋࡓࠋࡇࢀࡽࡢ

ᆅ⌫໬Ꮫᅗ࡟ࡣ  ᖺᗘ௨๓ࡢ⤖ᯝࡶྵࡵ࡚♧



ࡋࡓࠋ



ϫᅗ  ࡛ࢃ࠿ࡿࡼ࠺࡟ࠊࡇࢀࡽ  ඖ⣲ࡢศᕸࡣ㢮ఝࡋ࡚࠸ࡿࠋࡇࢀࡽ  ඖ⣲ࡣⱞ㕲㉁࣐ࢢ࣐

࡟ከࡃྵࡲࢀ࡚࠸ࡿඖ⣲࡛ࠊࡇࡢᆅᇦࡢᆅ㉁ᅗ

㸦ϫᅗ 㸧ࢆヲ⣽࡟ぢࡿ࡜ࠊࡇࢀࡽ  ඖ⣲ࡢ⃰ᗘࡀ㧗࠸ሙᡤ࡟ࡣⱞ㕲㉁⁐ᒾࡀࢃࡎ࠿࡛࠶ࡿࡀᏑ
JRR-3ࠊPN-1ࠊPN-3ࠊJRR-4ࠊHRࠊS ࣃ࢖ࣉࠊT ࣃ࢖ࣉࠊᨺᑕ໬ศᯒ㸦Ᏹᐂ࣭ᆅ⌫໬Ꮫศ㔝㸧4-1- 226 -

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JAEA-Review 2013-040ᅾࡋ࡚࠸ࡿࠋࡍ࡞ࢃࡕᆅ㉁᝟ሗࢆ♧ࡋ࡚࠸ࡿࠋ
$X ࡀ᭱ࡶ㧗⃰ᗘ࡛࠶ࡿᆅⅬ㸦ᅗϫ㸧ࡣࠊ࠿ࡘ࡚㔠ࡀ᥇㖔ࡉࢀ࡚࠸ࡓሙᡤ㸦⛛∗㖔ᒣ㸧࡛࠶ࡿࠋὀ┠ࡍ࡭ࡁࡣ $X ࡢ⃰ᗘࡀ㧗࠸࡜ࡇࢁࡣ $V㸪6E ࡶ㧗⃰ᗘ࡛࠶ࡿࡇ࡜࡛࠶ࡿࠋࡇࢀࡽ  ඖ⣲ࡀ㧗⃰ᗘ࡛࠶ࡿᆅᇦ㸦⛛∗㖔ᒣ㸧ࡣⰼᓵᒾ࣐ࢢ࣐ࡀ㈏ධࡋ
ࡓሙᡤ㸦ᅗϫ㸧࡛࠶ࡾࠊ⇕Ỉ㖔ᗋ࡜ࡋ࡚ㄝ࡛᫂
ࡁࡿࠋ ඖ⣲ࡣ㢮ఝࡢᣲືࢆ࡜ࡿࡇ࡜ࡀࢃ࠿ࡗࡓࠋ
⎔ቃ᝟ሗ࡜ࡋ࡚㔜せ࡞ +J ࡢศᯒἲ࡜ࡋ࡚
,1$$ ࡀ᭱ࡶඃࢀ࡚࠸ࡿ࡜⪃࠼ࡽࢀࡿࠋ+J ࡣࡁࢃ
ࡵ࡚᥹Ⓨᛶࡀᙉ࠸ඖ⣲࡛ࠊศᯒࡢ㐣⛬࡛ຍ⇕ࡍࡿ࡜ᐜ᫆࡟᥹Ⓨࡋ࡚ࠊᑡ࡞ࡃ࡜ࡶ୍㒊ࡀኻࢃࢀ࡚ࡋ
ࡲ࠺ࡢ࡛ࠊṇࡋ࠸ศᯒ್ࢆᚓࡿࡇ࡜ࡀᅔ㞴࡛࠶ࡿࠋ
,1$$ ࡛ࡣཎᏊ⅔࡛ᨺᑕ໬ࡍࡿ᫬࡟

ᗘࡀୖࡀࡿࡀࠊᐦᑒࡉࢀ࡚࠸ࡿࡢ࡛ࠊ+J ࡀ᥹Ⓨࡋ࡚ኻࢃࢀࡿࡇ࡜ࡣ࡞࠸ࠋ,1$$ ⏝ヨᩱࡢ๓ฎ⌮࡛ࡣຍ⇕ࢆ࠸ࡗࡉ࠸ࡏࡎࠊ⮬↛஝⇱ヨᩱࢆศᯒ࡟⏝࠸ࡓࠋᮏ◊✲࡛ࡣࠊ+J ࢆ㧗⃰ᗘ࡛ྵࡴ $OOHQGH 㝹▼⢊ᮎࢆᶆ‽ヨᩱ࡜ࡍ࡭ࡃࠊ+J ᶆ‽⁐ᾮࢆ⏝࠸್࡚࡙ࡅࢆ
㛤ጞࡋࡓࠋṧᛕ࡞ࡀࡽ㸦㸽㸧ࡇࢀࡲ࡛ࡢ࡜ࡇࢁ +Jᅗϫ&Uࠊ0Jࠊ1L ࡢᆅ⌫໬ᏛᅗࢆྵࡴἙᕝ◁ࡣࡲࡔᏑᅾࡋ࡚࠸࡞࠸ࠋ
ϫ ௒ᚋࡢᆅ⌫໬Ꮫᅗసࡾ
❧ṇ኱Ꮫ࡟࠾ࡅࡿᆅ⌫໬ᏛᅗసࡾࡣࠊⲨᕝࡢ
ୖὶ࠿ࡽ୰ὶᇦ࡟⛣ືࡋ࡚ࡁ࡚࠸ࡿࠋࡇࡢ໬Ꮫᅗ
సࡾࡣ௒ᚋࡶ⥆ࡅࡿィ⏬࡛࠶ࡿࠋ❧ṇ኱ᏛࡀᏑᅾ
ࡍࡿ⇃㇂ࡲ࡛ࡣࠊࡲࡔ࠿࡞ࡾࡢ㊥㞳ࡀ࠶ࡿࠋࡇࢀ࠿ࡽࡣேⅭⓗ࡞⎔ቃ᝟ሗࡀᚓࡽࢀࡿࡼ࠺࡟࡞ࡿ
࠿ࡶࡋࢀ࡞࠸ࠋேࡀከࡃᒃఫࡍࡿᆅᇦࡢヨᩱ᥇ྲྀࡣࠊἙᕝỈࡢ⮯࠸ࡀୗỈⓗ࡟࡞ࡗ࡚ࡁ࡚ࠊởࢀࡓỈࡢ୰࡛ࡢヨᩱ᥇ྲྀࡣ᭷㞴࠸ࡇ࡜࡛ࡣ࡞࠸ࠋ
ᅗϫⲨᕝୖὶᇦࡢᆅ㉁ᅗ࡜ヨᩱ᥇ྲྀᆅⅬᅗϫ$Xࠊ$Vࠊ6E ࡢᆅ⌫໬Ꮫᅗ

JRR-3ࠊPN-1ࠊPN-3ࠊJRR-4ࠊHRࠊS ࣃ࢖ࣉࠊT ࣃ࢖ࣉࠊᨺᑕ໬ศᯒ㸦Ᏹᐂ࣭ᆅ⌫໬Ꮫศ㔝㸧4-1- 227 -

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ㅰ㎡࣏ࣥࢪ࣒࢘㸬-550ࠊ31 ↷ᑕࠊȚ⥺ ᐃ࡟࠶ࡓࡗ࡚ࠊཎ

ᴋ㔝ⴥ⍠㤶ࠊ⚟ᒸᏕ᫛ࠊᯇᓮᾈஅࠊᑠᓥ⚽ᗣᏊຊᶵᵓࡢ㨣⃝Ꮥ἞Ặ࡟ከ኱࡞ࡈ༠ຊࢆ㡬ࡁࡲ㸦㸧
ࠕ$O ྵ᭷㔞࡟ࡼࡿ༡ᴟࡸࡲ࡜ +(' 㝹▼ࡋࡓࠋᨺᑕ໬ࡉࢀࡓከࡃࡢヨᩱࡢȚ⥺ࡢ࣌࢔ࣜࣥࢢࠖ➨  ᅇ᪥ᮏ $06 ࢩ࣏ࣥࢪ࣒࢘㸬ᐃ࡟࠶ࡓࡗ࡚ࡣ㟷ᒣᏛ㝔኱ᏛࡢỌ⏣ᜤᏊẶ࡟኱ኚ࠾ୡヰ࡟࡞ࡾࡲࡋࡓࠋᮏ◊✲඲య࡟ࢃࡓࡗ࡚ࠊᮾி኱Ꮫ

㛤ᨺ◊✲ᐊࡢ᪉ࠎ࡟࠾ୡヰ࡟࡞ࡾࡲࡋࡓࠋࡇࡇ࡟

グࡋ࡚ࡇࢀࡽࡢ᪉ࠎ࡟῝ࡃឤㅰࡍࡿḟ➨࡛ࡍࠋ



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ᡂᯝࡢබ⾲

᪂⸨ᬛᏊ࣭⚟ᒸᏕ᫛࣭㟷ᮌ࠿࠾ࡾ࣭▼ᮏග᠇㸦㸧ࠕ㧗⃰ᗘ 0Jࠊ&U ᆅⅬࡢⓎぢ࡜ 3E ேⅭởᰁࡢྍ⬟ᛶ㸫Ⲩᕝୖὶⷧᕝὶᇦࡢᆅ⌫໬Ꮫᅗࠖ

ᖺᗘ᪥ᮏᆅ⌫໬Ꮫ఍➨  ᅇᖺ఍

᪂⸨ᬛᏊ࣭⚟ᒸᏕ᫛㸦㸧ࠕⲨᕝୖὶ୰ὠᕝ࣭

Ἑཎἑᕝ࣭㉥ᖹᕝὶᇦࡢᆅ⌫໬Ꮫᅗࠖ ᖺᗘ᪥ᮏᆅ⌫໬Ꮫ఍➨  ᅇᖺ఍
୕ᾆள⏤⨾ࠊᏱ㔝཭๎ࠊ⚟ᒸᏕ᫛㸦㸧ࠕࢻ࣮࣒ )XML ࢥ࢔ษ๐ị࠿ࡽࡢᏱᐂሻᅇ཰ࠖᖹᡂ ᖺᗘᴟᇦẼỈᅪ࣭⏕≀ᅪྜྠࢩ࣏ࣥࢪ࣒࢘
+.XVXQR7)XNXRND+.RMLPD+0DWVX]DNL
 ͆*URXSLQJRI<DPDWR+('PHWHRULWHVEDVHGRQ$OFRQWHQWV͇7KH7KLUW\VHFRQG
6\PSRVLXPRQ$QWDUFWLF0HWHRULWHV
+.XVXQR7)XNXRND+.RMLPD+0DWVX]DNL
 ͆*5283,1*2)<$0$72+('0(7(25,7(6%$6('21$O&217(176$1'&+(0,&$/
&20326,7,216͇QG$QQXDO0HHWLQJRIWKH
0HWHRULWLFDO6RFLHW\⚟ᒸᏕ᫛࣭㟷ᮌ࠿࠾ࡾ࣭ᴋ㔝ⴥ⍠㤶㸦㸧ࠕዟ⛛∗Ⲩᕝୖὶࡢᆅ⌫໬Ꮫᅗ㸫❧ṇ኱Ꮫ࡛ࡢᆅ
⌫໬Ꮫᅗసࡾࠖ᪥ᮏᝨᫍ⛉Ꮫ㐃ྜ  ᖺ኱఍
⚟ᒸᏕ᫛࣭㟷ᮌ࠿࠾ࡾ࣭ᴋ㔝ⴥ⍠㤶㸦㸧ࠕἙᗋሁ✚≀ࡢ໬Ꮫศᯒ࡟ᇶ࡙ࡃᆅ⌫໬Ꮫᅗࡢస
ᡂ࣐ࢽࣗ࢔ࣝ࡜௒ᚋࡢᒎᮃࠖ❧ṇ኱Ꮫᆅ⌫⎔ቃ◊✲ࠊ➨  ྕࠊ
ᴋ㔝ⴥ⍠㤶ࠊ⚟ᒸᏕ᫛ࠊᯇᓮᾈஅࠊᑠᓥ⚽ᗣ㸦㸧
ࠕ$O ྵ᭷㔞໬Ꮫ⤌ᡂ࡟ᇶ࡙࠸ࡓ༡ᴟࡸ
ࡲ࡜ +(' 㝹▼ࡢ࣌࢔ࣜࣥࢢࠖ➨  ᅇ᪥ᮏ $06 ࢩ
JRR-3ࠊPN-1ࠊPN-3ࠊJRR-4ࠊHRࠊS ࣃ࢖ࣉࠊT ࣃ࢖ࣉࠊᨺᑕ໬ศᯒ㸦Ᏹᐂ࣭ᆅ⌫໬Ꮫศ㔝㸧4-1- 228 -

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JAEA-Review 2013-040

4-2୰ᛶᏊᨺᑕ໬ศᯒἲ࡟ࡼࡿ㝹▼୰ࡢ 0Q ࡢᐃ㔞 ϩ'HWHUPLQDWLRQRI0QLQ0HWHRULWHVE\1HXWURQ$FWLYDWLRQ$QDO\VLV ,, 㤳㒔኱Ꮫᮾி኱Ꮫ㝔⌮ᕤᏛ◊✲⛉ศᏊ≀㉁໬Ꮫᑓᨷ ኱ᾆὈႹ
ࡣࡌࡵ࡟ ࡑࡇ࡛㸪ᨺᑕ໬ศᯒἲ࡟ࡼࡾ㸪ࡇࢀࡲ࡛ࡢᐃ㔞  㝹▼ࡣᏱᐂ✵㛫ࢆ㣕⾜ࡋ࡚࠸ࡿ㛫࡟Ᏹᐂ⥺㝈⏺ࡼࡾప࠸ᴟᚤ㔞 0Q ࢆᐃ㔞ࡍࡿࡓࡵࡢ‽ഛ࡜ࡢ↷ᑕࢆཷࡅ㸪᰾཯ᛂ࡟ࡼࡾࡉࡲࡊࡲ࡞᰾✀ࡀ⏕ࡋ࡚㸪๓᥇ᢥᮇ㛫࡛ࡣ㸪0Q ⃰ᗘࡀ GSPNJᡂࡍࡿ㸬ࡇࡢ⏕ᡂ≀࡜ࡋ࡚㸪༙ῶᮇࡀ㛗࠸ᨺᑕᛶ࠿ࡽ GSPNJ ࡲ࡛ࡢ  ヨᩱࡢᐃ㔞ࢆ⾜ࡗࡓ㸬









%H $O &O 0Q ࡞࡝ ࡸᕼ࢞ࢫᏳᐃ᰾✀᰾✀௒ᮇࡣࡼࡾప⃰ᗘ࡛࠶ࡿ GSPNJ ࡜ணࡉࢀࢆᏱᐂ⥺⏕ᡂ᰾✀࡜ࡋ࡚㝹▼୰᳨࡛ฟࡍࡿࡇ࡜

ࡿ⃰ᗘࡲ࡛ࡢヨᩱࡢศᯒࢆヨࡳࡓ㸬ࡀྍ⬟࡛࠶ࡿ㸬ࡇࢀࡽࡢᏱᐂ⥺⏕ᡂ᰾✀ࢆ฼⏝ࡋ 㕲㝹▼ヨᩱࢆ 0Q ᢸయ࡜ &O ᢸయ࡜࡜ࡶ࡟⁐ゎᚋ㸪࡚㸪Ᏹᐂ⥺↷ᑕᖺ௦ࡸ㸪ᆅ⌫࡟ⴠୗࡋࡓᖺ௦ࢆᚓ

ሷ⣲ࢆ $J&O ࡜ࡋ࡚ศ㞳ࡋࡓ㸬ࡇࡢሷ⣲ࣇࣛࢡࢩࡿࡇ࡜ࡀ࡛ࡁࡿ㸬ࡲࡓ㸪」ᩘࡢ᰾✀ࡢ⃰ᗘ࠿ࡽ㸪ࣙࣥࡣ㸪ຍ㏿ჾ㉁㔞ศᯒἲ࡟ࡼࡿ &O ࡢᐃ㔞࡟౪ࡑࡢ㝹▼ࡢⴠୗ๓ࡢ኱ࡁࡉࡸ㸪Ᏹᐂ⥺↷ᑕ⎔ቃࢆࡋࡓ㸬ሷ⣲ࢆศ㞳ࡋࡓṧࡾࡢ⁐ᾮ࠿ࡽ࢖ࢯࣉࣟࣆ

᥎ᐃࡍࡿࡇ࡜ࡶྍ⬟࡛࠶ࡿ㸬࢚࣮ࣝࢸࣝ࡟ࡼࡿ⁐፹ᢳฟ࡟ࡼࡾ㕲ࢆ㝖ཤࡋࡓ Ᏹᐂᆅ⌫໬Ꮫ࡞࡝࡟฼⏝ࡉࢀࡿ༙ῶᮇࡀ  ୓ᚋ㸪㝜࢖࢜ࣥ஺᥮࡜㝧࢖࢜ࣥ஺᥮࡟ࡼࡾ 0Q ࢆ⢭ᖺ࠿ࡽ  ୓ᖺ࣮࢜ࢲ࣮ࡢᏱᐂ⥺⏕ᡂᨺᑕᛶ᰾✀〇ࡋࡓ㸬⢭〇ࡋࡓ 0Q ࡣ $O ⟩ୖ࡟⁲ୗ࣭஝⇱ࡋ㸪ࡢከࡃࡣ㸪ຍ㏿ჾ㉁㔞ศᯒ $06 ἲࢆ⏝࠸࡚ᐃ㔞

-55'5 Ꮝ࡟࡚୰ᛶᏊࢆ  㐠㌿ࢧ࢖ࢡࣝ↷ᑕࡋࡓ㸬







ࡉࢀ࡚࠸ࡿ㸬ᅜෆࡢ $06 ᪋タ࡛ࡣ㸪 %H㸪 &㸪 $O㸪

↷ᑕᚋ㸪㝧࢖࢜ࣥ஺᥮࡜㝜࢖࢜ࣥ஺᥮࡟ࡼࡾࡉࡽ

࡟⢭〇ࡋࡓᚋ㸪Ț⥺ࢆ&O ࡀᐃྍ⬟࡛࠶ࡿࡀ㸪0Q ࡣᅜෆ࡛ࡣ୙ྍ⬟࡛㸪ᾏእ࡟࠾࠸࡚ࡶ㸪 0Q ࢆᐃྍ⬟࡞ $06 ᪋タȚ⥺ᐃࡋࡓ㸬0Q ࡢ໬Ꮫ཰⋡ࡣ㸪ᐃヨᩱࢆ -5531 ࡛  ศ㛫↷ᑕࡋࡓ෌ᨺ

ࡣ㠀ᖖ࡟㝈ࡽࢀ࡚࠸ࡿ㸬ᑕ໬ἲ࡟ࡼࡾồࡵࡓ㸬 ᮏ◊✲ࡣ㸪$06 ἲ࡛ ᐃ࡛ࡁ࡞࠸Ᏹᐂ⥺⏕ᡂᨺ ᮏᐃ㔞ἲࡣ㸪0Q QQ 0Q ཯ᛂࡢጉᐖࢆཷࡅ

ᑕᛶ᰾✀ࡸ㸪ᕼ࢞ࢫ௨እࡢᏱᐂ⥺⏕ᡂᏳᐃ᰾✀ࡢࡿ㸬ࡑࡢࡓࡵ㸪ࡇࡢጉᐖ཯ᛂࡢᐤ୚ࢆᑠࡉࡃࡍࡿ

୰࡛㸪୰ᛶᏊᨺᑕ໬ศᯒἲ࡟ࡼࡾᐃ㔞ྍ⬟࡞ 0Q

ࡓࡵ࡟㸪0Q ༢యࡢ㔞ࢆᚑ᮶ࡢ  ࡛࠶ࡿ ȣJ࡜ 6F ࡟ὀ┠ࡋࡓ㸬ࡲࡓ㸪&O ࢆ⏝࠸ࡓ◊✲࡟㛵࡜ࡋ࡚໬Ꮫศ㞳ࢆ⾜ࡗࡓ㸬ᢸయ㔞ࢆῶࡽࡋ࡚ࡶ཰

㐃ࡋ࡚㸪ศᯒヨᩱࡢඖ⣲⤌ᡂࢆ୰ᛶᏊᨺᑕ໬ศᯒ

⋡Ⰻࡃ 0Q ࢆศ㞳ᅇ཰࡛ࡁࡿࡇ࡜ࡣ 0Q ࢺ࣮ࣞࢧἲ࡟ࡼࡾồࡵࡓ㸬࣮ࢆ⏝࠸࡚ணࡵ☜ㄆࡋࡓ㸬 0Q ⃰ᗘࡀ GSPNJ ࠿ࡽGSPNJ ࡛࠶ࡿ࣐ࣥ࢞ࣥ 0Q0Q ࡜ ᥎ ᐃ ࡉ ࢀ ࡿ  ヨ ᩱ ࡢ ᐃ 㔞 ࢆ ⾜ ࡗ ࡓ ࡀ 㸪  ᖺ࡟ࢼ࣑ࣅ࢔ඹ࿴ᅜ࡛Ⓨぢࡉࢀࡓ㕲㝹▼

GSPNJ ௨ୗ࡜᥎ᐃࡉࢀࡿ  ヨᩱࡣ໬Ꮫ཰⋡ࡀࢠ࣋࢜ࣥࡣ㸪⥲㔜㔞ࡀ NJ௨ୖ࠶ࡾ㸪ࡇࡢࢆ኱ࡁࡃ㉺࠼㸪ᐃ㔞࡛ࡁ࡞࠿ࡗࡓ㸬ྠ᫬࡟⾜㝹▼ࡣᏱᐂ✵㛫࡛኱ࡁ࠿ࡗࡓ࡜ண᝿࡛ࡁࡿ㸬ࡇࡢࡗࡓ᧯సࣈࣛࣥࢡ᳨࡛ฟࡉࢀࡓ 0Q ࡣ ȣJ ࡛







㝹▼୰ࡢᏱᐂ⥺⏕ᡂ᰾✀㸪 %H㸪 $O㸪 &O ࡞ࡽࡧ࡟+H ࡀ⣔⤫ⓗ࡟㝹▼⾲㠃࠿ࡽ῝㒊ࡲ࡛ ᐃࡉ࠶ࡾ㸪཰⋡ࡀ ࢆ㉺࠼ࡓཎᅉࡀ᧯స୰ࡢởᰁ࡛࠶ࡿྍ⬟ᛶࡣప࠸㸬ࡼࡗ࡚㸪㕲㝹▼࡟ඖࠎྵࡲࢀ

ࢀ࡚࠸ࡿࡀ㸪 0Qࡢࢹ࣮ࢱࡣᑡ࡞࠸㸬᭱㏆㸪㠀ᖖ

࡚࠸ࡓ 0Q ࡢᙳ㡪ࡀ⪃࠼ࡽࢀࡿ㸬0Q ࡣᆅ⌫໬Ꮫⓗ࡟⾲㠃࠿ࡽ῝࠸࡜ᛮࢃࢀࡿヨᩱࡀぢࡘ࠿ࡗࡓࡀ㸪ぶ▼ඖ⣲࡛࠶ࡿࡓࡵ㕲㝹▼୰ࡢ⃰ᗘࡣ㠀ᖖ࡟ప㧗ឤᗘ࡛࠶ࡿᕼ࢞ࢫྠ఩య

ᐃࡶ㝈⏺࡟㏆ࡃ㸪᰾࠸࡜⪃࠼ࡽࢀࡿࡀ㸪ṇ☜࡞ 0Q ⃰ᗘࡣ࡯࡜ࢇ࡝ሗ

◚○ᶆⓗ࡛࠶ࡿ㕲ࡢ㉁㔞ᩘ࡟㏆ࡃ㸪ࡼࡾ⏕ᡂ⋡ࡢ࿌ࡉࢀ࡚࠸࡞࠸㸬᭱῝㒊ヨᩱࡢ 0Q ᐃ㔞ࡢࡓࡵ࡟㧗࠸ 0Q ࡢ ᐃ࡟ᮇᚅࡀࡶࡓࢀࡿ㸬ࡣ㸪ࡉࡽ࡟ 0Q ᢸయ㔞ࢆῶࡽࡍᚲせࡀ࠶ࡿࡓࡵ㸪-55'5㸪-55+5㸪-5531㸪-5531㸪-557 ࣃ࢖ࣉ㸪ᨺᑕ໬ศᯒ Ᏹᐂ໬Ꮫⓗヨᩱ- 229 -

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JAEA-Review 2013-040㕲㝹▼୰࡟ྵࡲࢀ࡚࠸ࡿ 0Q ⃰ᗘࢆṇ☜࡟▱ࡿᚲࡢጉᐖ཯ᛂࡣ᭱኱࡛ FSVPJ)H ࡛࠶ࡗࡓ㸬0Q

せࡀ࠶ࡿ㸬ࡑࡇ࡛㸪ᴟᚤ㔞 0Q ࡢṇ☜࡞ᐃ㔞ࡢࡓ⃰ᗘࡀ SSE ࡛࠶ࡿ㕲㝹▼ࢆ J ⏝࠸ࡓ᫬㸪ࡇࡢ )Hࡵ࡟㸪㕲㝹▼୰ࡢ 0Q ⃰ᗘᐃ㔞ࢆ㛤ጞࡋࡓ㸬ࡢ㝖ཤ⋡࡛㸪-5531 ࡛↷ᑕࡍࡿ࡜㸪)H ࡢጉᐖ ᨺᑕ໬ศᯒἲࢆྵࡵᶵჾศᯒἲ࡛ࡣ㸪኱㔞ࡢ㕲ࡣ ⛬ᗘ࡜࡞ࡾ㸪༑ศ 0Q ࢆᐃ㔞࡛ࡁࡿࣞ࣋ࣝࡲ

࣐ࢺࣜࢵࢡࢫࡀᴟᚤ㔞 0Q ࡢᐃ㔞ࢆጉᐖࡍࡿࡓࡵ㸪࡛ )H ࢆ㝖ཤ࡛ࡁࡓ࡜⪃࠼ࡽࢀࡿ㸬1L ࡢ㝖ཤࡀ୙࠶ࡽ࠿ࡌࡵヨᩱ࠿ࡽ 0Q ࢆᐃ㔞ⓗ࡟ศ㞳ࡍࡿᚲせ༑ศ࡛࠶ࡗࡓࡀ㸪,1$$ ࡛ࡣ῝้࡞ጉᐖ࡟ࡣ࡞ࡽ࡞

ࡀ࠶ࡿ㸬0Q ᐃ㔞ࡢࡓࡵࡢ໬Ꮫศ㞳᧯సἲࡣ㸪0Q

࠸࡜ணࡢ໬Ꮫ཰⋡ࡀᖖ࡟ ࡛ࡣ↓࠿ࡗࡓࡓࡵ㸪ᐃ㔞ⓗ ௒ᚋࡣ㸪,1$$ ࡟࠾࠸࡚ጉᐖࡍࡿྍ⬟ᛶࡢ࠶ࡿ௚

࡟㸪࠿ࡘ㸪᧯స୰ࡢ 0Q ởᰁࢆ࡛ࡁࡿ㝈ࡾᑠࡉࡃࡢᚤ㔞ඖ⣲ࡢ㝖ཤ⋡㸪᧯సࣈࣛࣥࢡ㸪୰ᛶᏊ↷ᑕࡍࡿ஦ࡀ࡛ࡁࡿ᪂ࡓ࡞໬Ꮫศ㞳᧯సἲࢆ㸪⸨ᮏࡽ᫬ࡢヨᩱໟ⿦ᮦࡢࣈࣛࣥࢡࢆㄪ࡭㸪0Q ࡢᐃ㔞㝈⏺

ࢆㄪ࡭࡚࠸ࡃ㸬ࡢ᪉ἲࢆཧ⪃࡟ࡋ࡚ᨺᑕᛶࢺ࣮ࣞࢧ

0Q㸪 &U㸪ࡉࢀࡿ㸬&R ࢆ⏝࠸᳨࡚ウࡋࡓ㸬ࡑࡢ⤖ᯝ㸪ḟࡢ᧯స᪉ἲ



࡜ࡋࡓ㸬

ࢫ࢝ࣥࢪ࣒࢘ 6F  ヨᩱࢆࣇࢵ㓟࡟⁐ゎᚋ㸪0+) ⁐ᾮ࡜ࡋ࡚㝧࢖ 㕲㝹▼ࢠ࣋࢜ࣥࡣ㸪⌧ᅾࡲ࡛࡟㸪NP ࡟ࡶ࠾ࡼࡪᗈ⠊࡞ᆅᇦ࠿ࡽ⥲ィ  ࢺࣥࡢ◚∦ࡀぢࡘ࠿ࡗ࡚࠸ࡿ㸬ᮏ⏣ࡽࡣ㸪ࢠ࣋࢜ࣥ㝹▼ࡢ◚∦ࢆከᩘ཰㞟ࡋ㸪ᕼ࢞ࢫྠ఩యࡸ %H ࡞࡝ࡢᏱᐂ⥺⏕ᡂ᰾✀⃰ᗘࡢ⣔⤫ᛶࢆㄪ࡭ࡓ㸬ࡑࡢ⤖ᯝ㸪ᕼ࢞ࢫࢆ⏝࠸ࡓᏱᐂ⥺↷ᑕᖺ௦࡟ࡼࡾ㸪◚∦ࢆ  ࢢ࣮ࣝࣉ࡟
ศ㢮࡛ࡁࡿࡇ࡜ࡀࢃ࠿ࡗࡓ㸬 ࡘࡢ␗࡞ࡿ↷ᑕᖺ௦ࡀᚓࡽࢀࡿཎᅉ࡜ࡋ࡚㸪L ከẁ㝵↷ᑕࢆ⤒㦂ࡋࡓ㸪LL ኱Ẽ୰ࡢ㣕⾜᫬㛫ࡀ㛗࠿ࡗࡓࡓࡵᕼ࢞ࢫ
ࡢ୍㒊ࡀ᥹Ⓨࡋࡓ㸪ࡢ  ࡘࡀ⪃࠼ࡽࢀࡿ㸬ཎᅉ LLࡢᕼ࢞ࢫࡢ᥹Ⓨࡢ᭷↓ࢆㄪ࡭ࡿ࡟ࡣ㸪᥹Ⓨࡋ࡟ࡃ࠸Ᏹᐂ⥺⏕ᡂᏳᐃ᰾✀ࢆㄪ࡭࡚ࡳࢀࡤࡼ࠸㸬୍⯡࡟㸪▼㉁㝹▼୰ࡢᕼ࢞ࢫྠ఩య௨እࡢᏱᐂ⥺⏕ᡂ㉳※ࡢᏳᐃ᰾✀ࡣ᳨ฟࡀᅔ㞴࡛࠶ࡿ㸬ࡋ࠿ࡋ㸪㕲㝹▼࡛ࡣ㸪ぶ▼ඖ⣲Ꮡᅾᗘࡀ㠀ᖖ࡟ᑠࡉ࠸ࡓࡵ㸪ࡇࢀࡽࡢྠ఩యࡀᏱᐂ⥺㉳※࡜ࡋ᳨࡚ฟࡉࢀ࡚
࠸ࡿ㸬ࡑࡢ୰࡛㸪6F ࡣ :¦QNH ࡟ࡼࡾึࡵ࡚ᐃ㔞ࡉࢀ㸪ࡑࡢ⃰ᗘࡣ +H ⃰ᗘ࡜ࡼ࠸┦㛵ࡀ࠶ࡿࡇ࡜
ࡀሗ࿌ࡉࢀ࡚࠸ࡿ㸬ࡑࡇ࡛㸪ࢠ࣋࢜ࣥ㝹▼୰ࡢ 6F
⃰ᗘࢆㄪ࡭ࡓ㸬 ࢠ࣋࢜ࣥ㝹▼ࡢ  ಶࡢ◚∦ ࠥJ ࡢ⾲㠃ࢆᕼ◪㓟࡛Ὑίᚋ㸪-557% ࣃ࢖ࣉ࡟࡚  ᫬㛫㸪ࡲࡓࡣ㸪-55+5 Ꮝ࡟࡚  ᫬㛫ࡢ୰ᛶᏊ↷ᑕࢆ⾜ࡗࡓ㸬↷ᑕᚋ㸪ᆅ⌫㉳※ࡢ 6F ࢆ༑ศ㝖ཤࡍࡿࡓࡵ
࡟㸪ࡉࡽ࡟ᕼ◪㓟࡛⾲㠃ࢆὙίࡋࡓ㸬ࢫ࢝ࣥࢪ࢘
࣒ᢸయ࡜࡜ࡶ࡟ᕼ◪㓟࡛ヨᩱࢆ⁐ゎᚋ㸪0 ሷ㓟⁐ᾮ࡜ࡋ㸪࣓ࢳࣝ࢖ࢯࣈࢳࣝࢣࢺࣥ࡟ࡼࡾ㕲ࢆ⁐፹ᢳฟ࡟ࡼࡾ㝖ཤࡋࡓ㸬㝖ཤࡋࡁࢀ࡞࠿ࡗࡓ㕲ࢆ࢔ࢫࢥࣝࣅࣥ㓟࡛ )H࡟㑏ඖᚋ㸪758 ᶞ⬡ P/ ࢆ⏝࠸ࡓᢳฟࢡ࣐ࣟࢺࢢ࣒ࣛ 0+&O ࡛྾╔㸪0+&O࡛⁐㞳 ࡟ࡼࡾ 6F ࢆศ㞳ࡋࡓ㸬㓇▼㓟ࢫ࢝ࣥࢪ࢘

࢜ࣥ஺᥮ᶞ⬡࣒࢝ࣛ P/ ࡟㏻ࡍ>㕲ࡣ྾╔ࡏࡎ㸪
0Q&R1L ࡣ྾╔ࡍࡿ@㸬Ỉࢆὶࡋ࡚࣒࢝ࣛ୰ࡢ +)ࢆὶฟࡉࡏࡓࡢࡕ㸪0+&OP/ ࡛ 0Q ࢆ⁐㞳ࡍࡿ
>&R ࡜ 1L ࡶ⁐㞳ࡉࢀࡿ@㸬ࡇࡢ 0Q ࣇࣛࢡࢩࣙࣥࢆ
⵨Ⓨ஝ᅛᚋ㸪ࣉࣟࣃࣀ࣮ࣝሷ㓟  ΰྜ⁐ᾮP/ ࡟⁐ゎࡋ㸪㝜࢖࢜ࣥ஺᥮ᶞ⬡࣒࢝ࣛ P/ ࡟㏻ࡍ>1L ࡣ྾╔ࡋ࡞࠸@㸬0+&O P/ ࡛ 0Q ࢆ⁐
฼ࡍࡿ>&R ࡣ⁐㞳ࡉࢀ࡞࠸@㸬 ࡇࡢ᪉ἲࢆ㕲㝹▼ᶍᨃヨᩱ )H1L&R ࡟ᑐࡋ࡚  ᅇ⾜ࡗࡓ᫬ࡢ 0Q ➼ࡢᅇ཰⋡ࢆ⾲㸯࡟♧ࡍ㸬⾲㸯ᅇ཰⋡>@


0Q 

&R 

&U 

)H 

1L 





   





 





    ᨺᑕᛶࢺ࣮ࣞࢧ࡟ࡼࡿ ᐃ,&3 Ⓨගศᯒ࡟ࡼࡿᐃ ᅇࡢᐇ㦂࡛ᖖ࡟ 0Q ࢆᐃ㔞ⓗ࡟ᅇ཰࡛ࡁࡓ࡜࡜ࡶ࡟㸪)H ࢆ࡯࡜ࢇ࡝㝖ཤ࡛ࡁࡓࡀ㸪ᩘ ࡢ 1L ࢆ㝖 ཤ ࡛ ࡁ ࡞ ࠿ ࡗ ࡓ 㸬 ศ 㞳 ࡋ ࡓ 0Q ࡣ ,1$$

0Q QJ 0Q ࡟ࡼࡾᐃ㔞ࡍࡿࡇ࡜ࢆィ⏬ࡋ࡚࠸ࡿ㸬)H QS 0Q ࡢጉᐖࢆపࡃᢚ࠼ࡿࡓࡵ㸪&G ẚࡢ㧗࠸ -5531 ࡛ࡢ↷ᑕࡀᮃࡲࡋ࠸㸬31 ࡛ ศ㛫↷ᑕࡍࡿ࡜㸪0Q ࡢឤᗘࡣ FSVȣJ0Q㸪㕲

- 230 -

4-2
㻡㻠

JAEA-Review 2013-040࣒࡜ࡋ࡚࣐࢞ࣥ⥺ࢆ ᐃᚋ㸪㔜㔞ἲ࡟ࡼࡾ໬Ꮫ཰
⋡ࢆồࡵࡓ㸬࡞࠾㸪758 ᶞ⬡ࢆ⏝࠸ࡓᢳฟࢡ࣐ࣟ
ࢺࢢ࣒࡛ࣛࡢඖ⣲ࡢᣲືࡣ㸪ணࡵᨺᑕᛶࢺ࣮ࣞࢧ
ࢆ⏝࠸࡚ㄪ࡭ࡓ㸬ᅗ㸯࡟♧ࡍ㏻ࡾ㸪ᢳฟࢡ࣐ࣟࢺ
ࢢ࣒ࣛ࡟ࡼࡾ㸪6F ࡢȚ⥺ ᐃࢆጉᐖࡍࡿ࡜⪃࠼ࡽࢀࡿ )H ,, 㸪&R㸪,U ࠿ࡽ 6F ࢆ༑ศศ㞳࡛ࡁࡿࡇ࡜ࡀࢃ࠿ࡿ㸬ࡢ↷ᑕᖺ௦ࢆ♧ࡍヨᩱ࡛㸪ࡑࡢ௚ࡣ * ࡼࡾࡶ ⛬ᗘ▷࠸ᖺ௦ࢆ♧ࡍヨᩱ * ࡜ࡍࡿ ࡛࠶ࡿ㸬6F
࡜ +H ࡢ┦㛵࡟࠾࠸࡚㸪* ࡜ * ࡟⣔⤫ⓗ࡞ᕪࡣぢࡽࢀࡎ㸪* ࡜ * ࡜ࡶ࡟ࢠ࣋࢜ࣥ௨እࡢ௚ࡢ㕲㝹▼࡛ぢࡽࢀࡿ┦㛵࡜ࡼࡃ୍⮴ࡋࡓ㸬ࢠ࣋࢜ࣥ㝹▼࡟ほࡉࢀࡿ↷ᑕᖺᗘࡢ㐪࠸ࡣᑡ࡞ࡃ࡜ࡶᕼ

࢞ࢫࡢᦆኻ࡟ࡼࡿࡶࡢ࡛ࡣ࡞࠸࡜⤖ㄽ࡛ࡁࡿ㸬 ሷ⣲ &O  Ᏹᐂ⥺⏕ᡂ᰾✀ࡢࡘ࡛࠶ࡿ &O㸦༙ῶᮇ୓
ᖺ㸧ࡣ㸪㔠ᒓ┦୰࡛ࡣ୺࡟)Hࡸ1Lࡢ᰾◚○཯ᛂ࡟ࡼࡗ࡚⏕ᡂࡉࢀ㸪≉࡟༡ᴟ㝹▼ࡢⴠୗᖺ௦

ᐃ࡟⏝࠸ࡽࢀ࡚࠸ࡿ㸬ࡲࡓ㸪ࢣ࢖㓟ሷ┦୰࡛ࡣ)H࡜1L
ࡢ࡯࠿࡟ࡶ.ࡸ&D࡞࡝ࡢ᰾◚○཯ᛂࡸ㸪&Oࡢ୰ᛶᏊᤕ⋓཯ᛂ࡟ࡼࡗ࡚ࡶ⏕ᡂࡉࢀࡿ㸬㝧Ꮚ࡟ࡼࡿ᰾◚○཯ᛂࡢ&O⏕ᡂບ㉳㛵ᩘࡣᶆⓗඖ⣲ࡈ࡜࡟⣔⤫ⓗ࡟ኚ໬ࡋ࡚࠸ࡿࡓࡵ㸪 QȚ ཯ᛂࡶྵࡵ
࡚㝹▼୰࡛ࡢྛඖ⣲࠿ࡽࡢ&O⏕ᡂ⋡ࢆồࡵࡿࡇ
ᅗ6F㸪0Q)H ,, &R,Uࡢሷ㓟⣔࡛ࡢᢳฟࢡ࣐ࣟ
ࢺࢢ࣒ࣛ⁐ฟᣲື㸬 ᮏ◊✲࡛㸪SSEࠥSSE ࡢ 6F ⃰ᗘࢆᚓࡓ㸬ᅗ  ࡟ +H ⃰ᗘ࡜ 6F ⃰ᗘࡢ┦㛵ࢆ㸪+RQGD
DWDO ࡟ࡼࡿ  ࡘࡢࢠ࣋࢜ࣥ㝹▼࡜ࢠ࣋࢜ࣥ௨
እࡢ㕲㝹▼࡟ࡼࡿࢹ࣮ࢱ࡜࡜ࡶ࡟࡟♧ࡋࡓ㸬ᮏ◊✲࡛ࡣ㸪␗࡞ࡿ↷ᑕᖺ௦ࢆ♧ࡍࢠ࣋࢜ࣥ㝹▼ࡢ◚∦ࢆ⏝࠸ࡓ㸬ᅗ  ࡛ * ࡜♧ࡋࡓ  ࡘࡣ  ᖺ࡜࡛㸪Ᏹᐂ⥺↷ᑕ⎔ቃ࡟ࡘ࠸࡚῝ࡃ㆟ㄽ࡛ࡁࡿ࡜
⪃࠼ࡽࢀࡿ㸬ࡑࡇ࡛ྛᶆⓗඖ⣲ࡈ࡜ࡢ&O⏕ᡂ⋡ࢆồࡵࡓ㸬
 *ROG%DVLQ㝹▼ࢆ᩿∦࡜㸪*DR㝹▼᩿∦ࢆ○࠸࡚⢊ᮎ≧࡟ࡋ㸪☢▼࡛ࢣ࢖㓟ሷ┦࡜㔠ᒓ┦࡟ศ㞳ࡋࡓ㸬ᚓࡽࢀࡓࢣ࢖㓟ሷ┦ࡣࡉࡽ࡟◪㓟࡛ฎ⌮ࡍࡿࡇ࡜࡟ࡼࡾ㓟ྍ⁐┦࡜୙⁐┦࡟ศࡅ࡚㸪ྛヨᩱ࡛ࡘࡢ┦ࢆᚓࡓ㸬ࡇࢀࡽࡢ&O⃰ᗘࢆ⟃Ἴ኱Ꮫࢱࣥࢹ࣒ᆺຍ㏿ჾࢆ⏝࠸ࡓຍ㏿ჾ㉁㔞ศᯒἲ࡟㻝㻜㻝ࡼࡾᐃ㔞ࡋࡓ㸬ࡲࡓ㸪ᶆⓗඖ⣲⃰ᗘࢆ୰ᛶᏊᨺᑕ
໬ศᯒἲ -5531⛊࡞ࡽࡧ࡟-55+5Ꮝ㻝㻜ศ ࡜ග㔞Ꮚᨺᑕ໬ศᯒἲ࡟ࡼࡾᐃ㔞ࡋࡓ㸬㻜 ࡝ࡢ㝹▼᩿∦࡛ࡶ㸪ࢣ࢖㓟ሷࡢ◪㓟ྍ⁐┦࡛㻿㼏㻙㻠㻡㻌㼇㼜㼜㼎㼉

㻳㻝



㻝㻜

㻙㻝

%DVLQ㝹▼᩿∦୰ࡢᏱᐂ⥺⏕ᡂ᰾✀⃰ᗘࢆሗ࿌ࡋ࡚࠸ࡿࡀ㸪௒ᅇᐃ㔞ࡋࡓ&O⃰ᗘࡣࡑࢀࡽ࡜ྠ

㻳㻝㻝㻜ᵝࡢഴྥࢆ♧ࡋࡓ㸬:HOWHQHWDOࡣࣔࢹࣝィ⟬㻙㻞ࡶ⏝࠸࡚㸪᰾◚○཯ᛂ࡜୰ᛶᏊᤕ⋓཯ᛂ࠿ࡽࡢ
㻳㼕㼎㼑㼛㼚
㻻㼠㼔㼑㼞㻌㼕㼞㼛㼚㻌㼙㼑㼠㼑㼛㼞㼕㼠㼑㼟㻝㻜

&O⃰ᗘࡀ᭱ࡶ㧗࠿ࡗࡓ㸬:HOWHQHWDO ࡣ㸪*ROG

㻙㻟

㻝㻜

㻜

㻝㻜

㻝

㻞

㻝㻜
㻝㻜
㻙㻤
㻴㼑㻙㻠㻌㻌㼇㻝㻜 㼏㼏㻛㼓㼉




㻟

ᅗ  㕲㝹▼࡛ࡢ +H ࡜ 6F ⃰ᗘࡢ┦㛵ᐤ୚ࢆࡑࢀࡒࢀ᥎ᐃࡋࡓࡀ㸪ᮏ◊✲࡛ࡣ&Oࡀᐤ㻝㻜㻠୚ࡢ኱ࡁ࡞&O .&D  )H1L ࡢඖ⣲⩌࠿ࡽࡢࡳ⏕ᡂࡉࢀࡿ࡜௬ᐃࡋ࡚㸪ᐇ㦂್ࡢࡳ࠿ࡽ⏕ᡂ⋡ࢆ᥎ᐃࡋࡓ㸬ᚓࡽࢀࡓ&O⏕ᡂ⋡ࡣ㸪:HOWHQHW

4-2- 231 -

㻡㻡

JAEA-Review 2013-040

DO࡟ࡼࡿ᰾◚○཯ᛂ࡜୰ᛶᏊᤕ⋓཯ᛂࡢ┦㛵࡜+RQGD+1DJDL.1DJDR.%DMR17DNDRND

࡯ࡰ୍⮴ࡋࡓ㸬ࡼࡗ࡚㸪ᮏἲ࡟ࡼࡿ⏕ᡂ⋡ࡢ᥎ᐃ<2XUDDQG.1LVKLL]XP-RXUQDORIWKH

್ࡣጇᙜ࡛࠶ࡿ࡜⪃࠼ࡽࢀࡿ㸬 QȚ ࡟ࡼࡿᐤ3K\VLFDO6RFLHW\RI-DSDQ6XSSO$

୚ࡀ⣔⤫ⓗ࡟ᑡࡋ㧗ࡃ࡞ࡗ࡚࠸ࡿᵝ࡛ࡶ࠶ࡿࡀ㸪 

ᮏἲ࡟ࡼࡾᚓࡽࢀࡿ &O⏕ᡂ⋡ࡢ್ࡣ㸪&O⃰ᗘ࡟

4-2኱ࡁࡃ౫Ꮡࡍࡿࡢ࡛㸪ࡼࡾṇ☜࡞&O⃰ᗘࢆồࡵࡿᚲせࡀ࠶ࡿ㸬௒ᚋ㸪*ROG%DVLQ㝹▼ࡢ᪂ࡓ࡞᩿
∦࡟ᑐࡋ࡚ྠᵝ࡟&O⏕ᡂ⋡ࢆồࡵ㸪↷ᑕ⎔ቃࡢ᥎ᐃࢆヨࡳ࡚࠸ࡃ㸬ཧ⪃ᩥ⊩⸨ᮏ࣭ᚿᮧ㸪ศᯒ໬Ꮫ㸪  㸬0+RQGDHWDO3URF1,356\PS$QWDUFW
0HWHRULWHV  
 .&:HOWHQHWDO0HWHRU3ODQHW6FL
  㸬ᡂᯝࡢබ⾲࣭▼㉁㝹▼୰ࡢ &O ⏕ᡂ⋡኱ᾆὈႹ㸪ᒣᓮಇ㍜㸪ᶫワ஧୕㞝㸪ᾏ⪁ཎ඘㸪ᡞᓮ⿱㈗㸪➲බ࿴㸪㛗ᓥὈኵ㸪㧗ᶫດ㸪ᯇᅄ㞝㥽㸪⋢⌮⨾ᬛᏊ㸪ᮎᮌᩗ௓㸪ᯇᮧᏹ㸪ูᡤගኴ㑻㸪୕ᾆኴ୍㸪➨  ᅇᨺᑕ໬Ꮫウㄽ఍  
࣭&RVPRJHQLF+LVWULHVLQ*LEHRQDQG&DPSR'HO
&LHOR,URQ0HWHRULWHV0+RQGD.1DJDR.
%DMR+1DJDL<2XUD.1LVKLL]XPL㸪VW$QQXDO 0HHWLQJV RI WKH 0HWHRULWLFDO
6RFLHW\  ࣭㕲㝹▼୰ࡢᏱᐂ⥺⏕ᡂ᰾✀ 6F኱ᾆὈႹᮏ
⏣㞞೺㸪ᾏ⪁ཎ඘㸪 ᖺ᪥ᮏᆅ⌫໬Ꮫ఍ᖺ఍
 ࣭▼㉁㝹▼୰ࡢ &O ⏕ᡂ⋡ ,, ὾୰ⰾᩥ㸪኱ᾆὈႹ㸪ᾏ⪁ཎ඘㸪➲බ࿴㸪㛗ᓥὈኵ㸪㧗ᶫດ㸪ᡞᓮ⿱㈗㸪ᯇᅄ㞝㥽㸪⋢⌮⨾ᬛᏊ㸪ኳ㔝Ꮥὒ㸪ᮎᮌၨ௓㸪ูᡤගኴ㑻㸪ᮌୗဴ୍㸪 ᪥ᮏᨺᑕ໬Ꮫ
఍ᖺ఍࣭➨  ᅇᨺᑕ໬Ꮫウㄽ఍  
࣭&RVPRJHQLF6FLQ*LEHRQ,URQ0HWHRULWHE\
5DGLRDQDO\WLFDO1HXWURQ$FWLYDWLRQ$QDO\VLV<2XUD0+RQGD0(ELKDUD$VLD3DFLILF
6\PSRVLXPRQ5DGLRFKHPLVWU\  
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- 232 -

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JAEA-Review 2013-040

4-3ᆅᅪ⎔ቃ࡟࠾ࡅࡿඖ⣲ศᕸ࣭ᚠ⎔ࡢ◊✲㸦ϫ㸧—ྠ఩యᕼ㔘ᨺᑕ໬ศᯒ࡟ࡼࡿⓑ㔠᪘ඖ⣲࡜ࣞࢽ࣒࢘ࡢ㧗☜ᗘᐃ㔞—Ṋ⏣໷ᶞ (TAKEDA Masaki)1)࣭⏣୰ ๛(TANAKA Tsuyoshi) 1)࣭༡ 㞞௦(MINAMI Masayo) 1)࣭
ὸཎⰋᾈ(ASAHARA Yoshihiro) 1)࣭㕥ᮌ࿴༤(SUZUKI Kazuhiro) 1)࣭ᯘ ࿴ᶞ(HAYASHI Kazuki)1)࣭⏣୰ᾈྐ(TANAKA Hiroshi) 1)
1) ྡྂᒇ኱Ꮫ኱Ꮫ㝔⎔ቃᏛ◊✲⛉ᆅ⌫⎔ቃ⛉Ꮫᑓᨷ, 464-8601 ྡྂᒇᕷ༓✀༊୙⪁⏫
  Graduate School of Environmental Studies, Nagoya University, Chikusa, Nagoya 464-8601, Japan
Abstract   Iridium and osmium in several rock reference materials (peridotite (JP-1), basalt (JB-1b,
JB-2 and JB-3), andesite (JA-1 and JA-2), granite (JG-1a, JG-2 and JG-3)) and in some igneousrocks were analyzed with newly developed isotope diluted neutron activation analysis(ID-NAA). The ID-NAA was combined with isotope dilution method, NiS-fire assay procedureand traditional NAA. A total procedural blank for iridium was 0.0150±0.0005 ng and for
osmium was less than 1.0 ng. Various amounts of enriched 193Ir and 184Os isotopes were spiked
in a peridotite JP-1. The obtained results agreed well with each other and with the values ofprevious works (Ir: 2.97±0.28ppb, 1V, n=4, Os: 4.07±0.45ppb, 1V, n=4). In the NiS-fire assay step
it was concluded that natural Ir and Os had been experienced isotopic equilibrium with spikedenriched isotope. Then the ID-NAA was useful for determination of trace iridium and osmiumin crustal rocks. 19 crustal rocks including 5 intermediate to felsic rock reference samples were
determined for their iridium and osmium abundances.

JRR-3, JRR-4, S ࣃ࢖ࣉ㸪T ࣃ࢖ࣉ㸪Ẽ㏦⟶㸪ᨺᑕ໬ศᯒ㸦⎔ቃヨᩱ㸪ᒾ▼ヨᩱ㸪ⓑ㔠᪘ඖ⣲㸪࢖ࣜࢪ࣒࢘㸪࢜ࢫ࣑࣒࢘㸧- 233 -

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JAEA-Review 2013-040

 ࡣࡌࡵ࡟ⓑ㔠᪘ඖ⣲㸦,U2V5X5K3G㸧ࡣᕼᅵ㢮ඖ⣲ࡸ &Vࠊ%D ࡞࡝ᆅẆ࡟⃰㞟ࡋࡸࡍ࠸ぶ▼ඖ⣲ࡢᑐᴟ࡟࠶ࡿぶ㕲ඖ⣲࡜ࡋ࡚᰾ࡸ࣐ࣥࢺ
ࣝࡢᙧᡂ㐣⛬࡞࡝ࡢᆅ⌫໬Ꮫⓗ◊✲࡟࠾࠸࡚㠀ᖖ࡟㔜せ࡛࠶ࡿࠋࡋ࠿ࡋⓑ㔠᪘ඖ⣲ࡣ㝹▼ࡸ࣐ࣥࢺࣝ≀㉁࡞࡝࡬ࡢᛂ⏝౛ࡣከ࠸ࡶࡢࡢྵ᭷㔞ࡀᑡ࡞࠸ᆅẆ≀㉁࡬ᛂ⏝ࡋࡓ◊✲ࡣ࡯࡜ࢇ࡝࡞࠸ࠋⓑ㔠᪘ඖ⣲ࡢᐃ㔞ἲ࡟ࡣ ,1$$ࠊ51$$ࠊ,',&306 ࡞࡝ࡀࡼࡃ⏝࠸ࡽࢀ࡚࠾ࡾࠊ≉࡟ SHULGRWLWH ࡢࡼ࠺࡞࣐ࣥ
ࢺࣝ㉳※≀㉁ࡣྠᡭἲ࡛ࡼࡃ ᐃࡉࢀ࡚࠾ࡾࠊ ࡘࡢᐃ㔞ἲ㛫࡛ࡢ ,Uࠊ2V ⃰ᗘࡢ ᐃ್ࡶ࡯ࡰ୍⮴ࡋࡓ⤖ᯝࡀᚓࡽࢀ࡚࠸ࡿ
HJ(ELKDUD6KLQRWVXNDHWDO6KLUDLHWDO0HLVHLHWDO ࠋ୍᪉ᆅẆ≀㉁࡛࠶ࡿ EDVDOW ࡸ JUDQLWH ࡛ࡣ୺࡟ 51$$ ࡟ࡼࡗ࡚ࠊ࠸ࡃࡽ࠿ࡢᒾ▼ᶆ‽ヨᩱ࡛ 3*(V ࡢᐃ㔞ࡀ⾜ࢃࢀ࡚࠸ࡿࠋ51$$ ࡣ㏻
ᖖࡢ ,1$$ ࡼࡾࡶ㛗᫬㛫୰ᛶᏊ↷ᑕࡋࠊࡑࡢ
ᚋࡢ࠸ࡃࡘ࠿ࡢ໬Ꮫศ㞳ࢆ⤒ࡿࡇ࡜࡟ࡼࡾࠊ
┠ⓗඖ⣲ࡢศᯒឤᗘࡣ㠀ᖖ࡟㧗࠸࡜࠸࠺㛗ᡤࢆࡶࡘࠋࡋ࠿ࡋࠊ㛗᫬㛫↷ᑕࢆࡍࡿࡇ࡜
࡟ࡼࡾࠊ┠ⓗ࡜ࡋ࡞࠸ඖ⣲࠿ࡽࡢᙉ࠸ᨺᑕ
⥺࡟ࡼࡿ⿕⇿࡜࠸࠺ࣜࢫࢡࡀ࠿࡞ࡾ㧗࠸Ⅼࠊ↹㞧࡞໬Ꮫศ㞳ࡀせồࡉࢀࡿⅬࡀ▷ᡤ࡜ࡋ࡚࠶ࡆࡽࢀࡿࠋࡲࡓࠊᆅẆ≀㉁ࡢࡼ࠺࡟ẚ㍑ⓗ୙ᆒ㉁ᛶࡢ㧗࠸≀㉁ࡢ඲ᒾ⃰ᗘࢆ௦⾲ࡍࡿ࡟ࡣࠊ࡝࠺ࡋ࡚ࡶࠊᩘ༑ࠥJ ⛬ᗘࡢᒾ▼ヨᩱࢆ⏝࠸࡞ࡅࢀࡤ࡞ࡽ࡞࠸ࠋࡋ࠿ࡋఏ⤫ⓗ࡟⾜ࢃࢀ࡚ࡁࡓᐃ㔞ἲ࡛ࡣୖグࡢ᮲௳ࢆ‶ࡓࡍᐃ㔞ࡣᅔ㞴࡛࠶ࡗࡓࠋࡇࡢࡼ࠺
࡞ࡇ࡜࠿ࡽࠊᆅẆ≀㉁୰ࡢⓑ㔠᪘ඖ⣲ࡢᐃ㔞࡟㛵ࡋ࡚ࠊᏳ඲ᛶ࡜⡆౽ࡉࢆවࡡഛ࠼ࡓࠊ
㧗☜ᗘ࣭㧗⢭ᗘ࡞ᐃ㔞ἲࡀᮃࡲࢀ࡚࠸ࡓࠋ
ᮏ◊✲࡛ࡣ᪂ࡋࡃࠊఏ⤫ⓗ࡞ ,1$$ ࡜ྠ఩యᕼ㔘ἲࢆ⤌ࡳྜࢃࡏࡓࠊྠ఩యᕼ㔘୰ᛶᏊᨺ ᑕ ໬ ศ ᯒ ἲ LVRWRSH GLOXWHG QHXWURQDFWLYDWLRQDQDO\VLV ࢆ㛤ⓎࡋᆅẆ≀㉁୰

ࡢ ,U ࠊ 2V ࡢ ᐃ 㔞 ࢆ ヨ ࡳ ࡓ ࠋ ఏ ⤫ ⓗ ࡞,1$$ 5RYHUWHWDO0F'RQDOGHWDO ࡛ࡣ 1L6ILUHDVVD\ ࢆ⏝࠸ࡿࡇ࡜࡛
౑⏝࡛ࡁࡿᒾ▼ヨᩱࢆᩘ༑ JࠥJ ࡜኱ࡁࡃࡍࡿࡇ࡜ࡀ࡛ࡁࡿࠋ3*(V ࡢ⃰⦰ἲ࡛࠶ࡿ
ྂ඾ⓗ 1L6ILUHDVVD\ ࡛ࡣᖖ࡟ࠊᐃ㔞ⓗ࡞
3*(V ࡢᅇ཰⋡ࡀᚲせ࡜ࡉࢀࡿࡀࠊᮏᐃ㔞ἲ࡛ࡣࡇࡢ⃰⦰ẁ㝵࡟ⓑ㔠᪘ඖ⣲ࡢ⃰⦰ྠ఩యࢆῧຍࡋྠ఩యᕼ㔘ἲࢆ⏝࠸ࡿࡇ࡜࡛ࠊ
ᅇ཰⋡ࢆ⿵ṇࡍࡿࡇ࡜ࡀྍ⬟࡜࡞ࡗࡓࠋྠ
఩యᕼ㔘୰ᛶᏊᨺᑕ໬ศᯒἲ࡛ࡣ  ᒾ▼ヨᩱࢆ୍ᗘ࡟ᩘ༑ࠥJ ⛬ᗘ⏝࠸ࡿࡇ࡜ࡀ
࡛ࡁࡿࠊ 51$$ ࡢࡼ࠺࡞㛗᫬㛫ࡢ୰ᛶᏊ↷ᑕᚋࡢᨺᑕ⥺⿕⇿ࡢࣜࢫࢡࡀప࠸ࠊ 51$$
ࡸ ,&306 ࡛⾜ࢃࢀࡿࡼ࠺࡞」㞧࡞໬Ꮫศ㞳ࢆᚲせ࡜ࡋ࡞࠸ࠊ࡜࠸࠺฼Ⅼࢆවࡡഛ࠼࡚
࠸ࡿࡇ࡜࡟࡞ࡿࠋᮏ◊✲࡛ࡣ ILUHDVVD\ ᫬࡟⃰⦰ྠ఩యࢆῧຍࡍࡿࡇ࡜࡛ࡑࡢᚋࡢ໬
Ꮫ᧯సࢆ㏻ᖖࡢ ,1$$ ࡟‽ࡎࡿྠ఩యᕼ㔘୰ᛶᏊᨺᑕ໬ศᯒἲࢆ☜❧ࡋࠊᆅẆ≀㉁୰࡟
೫ᅾࡍࡿᴟᚤ㔞࡞ࡢ ,Uࠊ2V ࡢ㧗☜ᗘᐃ㔞ࢆヨࡳࡓࠋᮏᡭἲ࡛᭱ࡶ㔜せ࡞ࡢࡣࠊヨᩱ୰ࡢⓑ㔠᪘ඖ⣲ࡀῧຍࡋࡓ⃰⦰ྠ఩య࡜ ILUHDVVD\ ࡢ⁐⼥᫬࡟ྠ఩యᖹ⾮ࢆ⤒㦂ࡍࡿ࠿࡜࠸࠺ࡇ࡜࡛࠶ࡿࠋᮏ◊✲࡛ࡣ␗࡞ࡗࡓヨᩱࢫࣃ࢖ࢡẚ࡟ㄪ〇ࡋࡓᒾ▼ᶆ‽ヨᩱࢆ⧞ࡾ㏉ࡋ ᐃࡋࠊࡑࢀࡒࢀ࡛ ,U2V ⃰ᗘࡢྠ୍ࡢᐃ㔞⤖ᯝࢆᚓࡿࡇ࡜࡛ྠ఩యᖹ⾮ࡢ᭷↓ࢆ☜ㄆࡋࡓࠋࡲࡓ  ࡢᆅẆ≀㉁࡟ࡘ࠸
࡚ ,U ࡢ⃰ᗘ࡜୍㒊ࡢヨᩱ࡟࠾࠸࡚ 2V ࡢ⃰ᗘࡢᐃ㔞࡟ᡂຌࡋࡓࠋ
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⏝࠸ࠊ ✀ࡢ 6U Ᏻᐃྠ఩యࢆᨺᑕ໬ࡋࡇࢀ

4-3- 234 -

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JAEA-Review 2013-040ࡽࡢᨺᑕ⬟ᙉᗘẚ࡜ẚ㍑ᶆ‽≀㉁ࡢᨺᑕ⬟ᙉᗘẚ࡜ࡢẚࢆ࡜ࡿࡇ࡜࡟ࡼࡾࠊ6U ࡢᐃ㔞ࢆ⾜ࡗࡓࠋᮏᡭἲࡣ 7DQDNDHWDO  ࡟ࡼࡿⓑ㔠᪘ඖ⣲࡟ᑐࡍࡿ ,'1$$ ࡟ᇶ࡙ࡃࠋ
ኳ↛ヨᩱ㔞ࢫࣃ࢖ࢡẚࢆኚ࠼ࡓẚ㍑ᶆ‽≀㉁ ࠥ ヨᩱࢆᮍ▱ VDPSOH ࡜ྠ᫬࡟↷ᑕࡍࡿࡇ࡜࡛ࠊᶆⓗ࡜ࡍࡿ஧ࡘࡢᨺᑕᛶྠ఩
యࡢᨺᑕ⬟ᙉᗘẚ࡜ :QDW:VS :QDWኳ↛ヨᩱ㔞 :VSῧຍ VSLNH 㔞 ࡜ࢆࣉࣟࢵࢺࡋ࢟ࣕ
ࣜࣈ࣮ࣞࢩ࣮ࣙࣥ࢝ࣈࢆసᡂࡋࡓࠋࡇࡢ࢝
࣮ࣈࢆࡶ࡜࡟ࠊヨᩱࡢⓑ㔠᪘ඖ⣲ྵ᭷㔞ࢆ⟬ฟࡋࡓࠋࡋ࠿ࡋࠊ஧ࡘࡢᨺᑕᛶྠ఩యࡀ
ࡶࡘ༙ῶᮇࡣ᰾✀࡟ࡼࡗ࡚␗࡞ࡿࡓࡵࠊྠ
ࡌヨᩱ࡛࠶ࡗ࡚ࡶ᫬㛫࡜ඹ࡟ࡑࡢẚࡣኚ໬ࡋ࡚ࡋࡲ࠺ࠋࡘࡲࡾྛẚ㍑ᶆ‽ヨᩱ࡟ᑐࡋ࠶ࡿ᫬㛫࡛ࡢᨺᑕ⬟ᙉᗘẚࢆ⏝࠸࡞ࡅࢀࡤ
࡞ࡽ࡞࠸ࡓࡵࠊ᫬㛫⿵ṇࡋࡓ್ࡀᚲせ࡜࡞ࡿࠋᮏᡭἲ࡛ࡣึ⏕ᨺᑕ⬟ᙉᗘẚࠊࡘࡲࡾẚ㍑ᶆ‽ヨᩱࡀ୰ᛶᏊ↷ᑕࡉࢀࡓ┤ᚋࡢᨺᑕ⬟ᙉᗘẚࢆ⏝࠸ࡓࠋึ⏕ᙉᗘẚ࡜ :QDW:VSࡣ௨ୗࡢ㛵ಀ࡟࠶ࡿࠋ

A' (Wnat /Wsp)u(Atwsp /Atwnat)uAbA.nat  AbA.sp
uC
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࢖ࢡῧຍ㔞ࢆࠊ$WZQDW$WZVS ࡣ QDWXUDOࠊVSLNH
ࡢཎᏊ㔞ࢆ♧ࡍࠋ$E$$E% ࡣᨺᑕ໬ࡉࢀࡿ஧
ࡘࡢྠ఩య $% ࡢྠ఩య⤌ᡂࢆ♧ࡍࠋ㸦㸧ᘧ࡟࠾࠸࡚ ( ࡣ *H ᳨ฟჾࡢ᳨ฟຠ⋡ࠊ,5 ࡣȚ⥺ᨺฟ⋡ࠊȪࡣ᰾཯ᛂ᩿㠃✚ࠊȢࡣኀኚ
ᐃᩘࠊW ࡣ୰ᛶᏊ↷ᑕ᫬㛫ࢆ⾲ࡍࡀヨᩱ࡜ᶆ‽ヨᩱࢆྠ᫬࡟↷ᑕࡍࡿࡇ࡜࡛࢟ࣕࣥࢭࣝ
ࡉࢀࡿࠋ1L6ILUHDVVD\ᇶᮏⓗ࡞ᡭἲࡣ 5REHUWHWDO  ࠊ࠾ࡼࡧ 0F'RQDOGHWDO  ࡟ᚑࡗࡓࠋ3RZGHU≧ࡢᒾ▼ヨᩱ ࠥJ ࡟ᑐࡋ࡚ 1D&2 ࠊ
1D%2 ࢆࡑࢀࡒࢀ ࠊJ ⏝࠸ࡓࠋ6 ࡜ 1Lࡣࡑࢀࡒࢀ  ࠾ࡼࡧ J ⏝࠸ࡓࠋ1L ヨ⸆୰࡟ࡣ୙⣧≀࡜ࡋ࡚ ,U ࡸ 2V ࡀධࡗ࡚࠸ࡿ
ྍ⬟ᛶࡀሗ࿌ࡉࢀ࡚࠸ࡿࡓࡵࠊヨ⸆ࡢ %ODQN್ࢆపࡃࡍࡿព࿡࡛ࡶ 6 ࡜ 1L ࡢ㔞ࡣฟ᮶ࡿࡔࡅᑡ࡞ࡃࡋࡓࠋᮏᡭἲ࡛ࡣ ILUHDVVD\ ᫬࡟ ,U ࠾ࡼࡧ 2V ࡢ⃰⦰ྠ఩యࡶྠ᫬࡟ῧຍ
ࡋ࡚࠸ࡿࠋࡇࢀࡽ⃰⦰ྠ఩యࡣࡲࡎ FP
FP ⛬ࡢ࢝ࣂ࣮࢞ࣛࢫ≧࡟ᩘȣࠥᩘ༑ȣO ࢆࣆ࣌ࢵࢸ࢕ࣥࢢࡋࡓᚋࠊΥ࡛஝⇱ࡉࡏࡿࠋ஝⇱ᚋࡣ࢝ࣂ࣮࢞ࣛࢫࡈ࡜ୖグࡢヨᩱࠊヨ⸆࡜࡜ࡶ࡟⣲↝ࡁࡢ☢ᛶࡿࡘࡰ࡟ධࢀࡽࢀ
ࡿࠋ⁐⼥᫬㛫ࡣ /LDQG(ELKDUD  ࡟ᚑ࠸ࠊΥ࡛  ศ⁐⼥ࡋࡓᚋࠊΥ࡛ ศ⁐⼥ࡋࡓࠋᆣላࢆ෭ࡸࡋࡓᚋᆣላࢆ◚ቯࡋࠊᗏ㒊࡟⏕ᡂࡉࢀࡓ 1L6EHDG ࢆᅇ཰ࡋࡓࠋ
ຍ࠼ࡽࢀࡓ 1L ࡜ 6 ࡟ᑐࡍࡿ 1L6 ࡢᅇ཰⋡ࡣ⣙ ⛬ᗘ࡛࠶ࡗࡓࠋ
ᅇ཰ࡉࢀࡓ 1L6EHDG ࡣ⣽࠿ࡃ○࠿ࢀࡓᚋࠊ
ΥୗࠊࠥPO ࡢ 1+&O ࡛⁐ゎࡉࡏࡓࠋࡑࡢᚋ 37)(PHPEUDQHILOWHU ࡛ℐ㐣ࡋࡓࠋℐ㐣ᚋ +)ࠊ⵨␃Ỉࡢ㡰࡟ὶࡋࠊࢺࣛࢵ
ࣉࡉࢀࡓṧࡉࢆℐ⣬ࡈ࡜ᅇ཰ࡋࡓࠋᅇ཰ࡉ
ࢀࡓℐ⣬ࡣ஝⇱ࡉࡏࡓᚋ▼ⱥ⟶࡟ධࢀᑒධ
ࡋࠊ୰ᛶᏊ↷ᑕࢆ⾜ࡗࡓࠋ  ୰ᛶᏊ↷ᑕ୰ᛶᏊ↷ᑕࡣ᪥ᮏཎᏊຊ◊✲㛤Ⓨᶵᵓ-$($ ࡢཎᏊ⅔ࠊ-55 ࡢ +5ࠊ+5 ࠾ࡼࡧ -55 ࡢ 6 ࣃ࢖ࣉ࡛⾜ࡗࡓࠋྛཎᏊ⅔ࡢ
WKHUPDOQHXWURQIOX[ ࡣࡑࢀࡒࢀ 
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ࢱࢆ 7DEOH࡟♧ࡍࠋヨ⸆ᶆ‽ヨ⸆
,Uࠊ2V ࡜ࡶ࡟ -RKQVRQ0DWWKH\FRPSDQ\ࡢ
SODVPDVWDQGDUGVROXWLRQ6SHFSXUH5ࢆ౑⏝ࡋࡓࠋࡲࡓ 3*(VPXOWLHOHPHQWDOVWDQGDUG࡜ ࡋ ࡚ -RKQVRQ 0DWWKH\ FRPSDQ\ ࡢ
3UHFLRXVPHWDOVSODVPDVWDQGDUGVROXWLRQࢆ౑⏝ࡋࡓ 3*(V ࡢ⃰ᗘࡣࡑࢀࡒࢀ ȣJPO ࠋ
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⃰⦰ྠ఩యࢆ౑⏝ࡋࡓࠋ ࢟ࣕࣜࣈ࣮ࣞࢩࣙࣥヨ⸆
FDOLEUDWLRQ ヨ⸆ࡣ ,U ࡟㛵ࡋ࡚ࡣ ᐃヨᩱ୰ࡢྵ᭷㔞࡟ࡼࡗ࡚ ,U ࡢከ࠸ヨᩱ⏝ࡢ
SDWWHUQ ࡜ ,U ࡢᑡ࡞࠸ヨᩱ⏝ࡢ SDWWHUQࡢ  ✀㢮ࢆࡑࢀࡒࢀ ࠥ ヨᩱㄪ〇ࡋࠊ2V ࡟㛵ࡋ࡚ࡣ  ✀㢮ࠊ ヨᩱㄪ〇ࡋࡓࠋࡑࢀࡒࢀࡢ ඖ ⣲ ࡟ ࡘ ࠸ ࡚ ࡢ QDWXUDO VWDQGDUG ࡜
VSLNHVROXWLRQ ࡢΰྜẚࢆ 7DEOH ࡟♧ࡍࠋ▼ⱥ⟶࡟ 6L2 ࢆධࢀࠊࡲࡎ ,UFDOLEUDWLRQVWDQGDUG ࢆ 6L2 ࡟ࡋࡳ㎸ࡲࡏࠊΥ࡛஝⇱ࡉࡏࡿࠋࡑࡢᚋ +62 ࢆࡋࡳ㎸ࡲࡏࡿࠋࡇࢀ
ࡣḟ࡟ධࢀࡿ 2V ࡀ 2V2 ࡟㓟໬ࡋࡸࡍࡃࠊࡲ
ࡓࡇࡢ 2V2 ࡀ᥹Ⓨࡋࡸࡍ࠸ࡓࡵࠊ▼ⱥ⟶ෆࢆ㑏ඖ≧ែࡍࡿࡓࡵ࡛࠶ࡿࠋ+62 ࢆ஝⇱ᚋࠊ
2VFDOLEUDWLRQVWDQGDUGࠊ3*(VVWDQGDUGࢆࡋࡳ㎸ࡲࡏࠊΥ࡛஝⇱ࡉࡏࡿࠋ෌ࡧ +62ࢆࡋࡳ㎸ࡲࡏࠊ㑏ඖ≧ែ࡟ࡋࡓࡢࡕࠊ஝⇱ᚋ┤ࡕ࡟▼ⱥ⟶ࢆᑒධࡍࡿࠋ
⤖ᯝ࣭⪃ᐹࣈࣛࣥࢡ%ODQN ヨᩱࢆㄪ〇ࡍࡿ࡟࠶ࡓࡾࠊᒾ▼ヨᩱࢆ⏝࠸ࡿࡇ࡜ࡀ࡛ࡁ࡞࠸ࠋ୍᪉ࠊࢩࣜ࢝ᡂศ
6L2 ࡀ࡞࠸࡜⁐⼥ࡢ㝿࡟ᆣላࡀᾐ㣗ࡉࢀ࡚ࡋࡲ࠺ࡓࡵ ILUHDVVD\ ࡀ࠺ࡲࡃ࠸࠿࡞࠸ࠋ
ࡼࡗ࡚ᒾ▼ヨᩱࡢ௦ࢃࡾ࡟⣧ 6L2 ヨ⸆ࢆຍ
࠼ࡓࠋ%ODQN ヨᩱࡣ  ヨᩱ‽ഛࡋࠊࡑࢀࡒࢀ
࡛ 6L2 ࡢ㔞ࡢࡳ J ࠿ࡽ J ࡎࡘኚ໬ࡉࡏࡓࠋȚ⥺ ᐃࡲ࡛ࡢᐇ㦂ࡢὶࢀࡣᒾ▼ヨᩱ ᐃ᫬ࡢࡶࡢ࡟‽ࡎࡿࠋࡑࡢ⤖ᯝ 6L2 ࡢ㔞࡜%ODQN ್࡜ࡢ┦㛵ࡣぢࡽࢀ࡞࠿ࡗࡓࡓࡵࠊ
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QJ Q Ȫ ࡜࡞ࡗࡓࠋ
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ࣈࢆ )LJࠊ)LJ ࡟♧ࡍࠋ࢟ࣕࣜࣈ࣮ࣞ
ࢩ࣮ࣙࣥ࢝ࣈࡣඖ⣲ࡈ࡜࡟ࠊࡲࡓ౑⏝ࡍࡿ⃰⦰ྠ఩యࡢྠ఩య⤌ᡂ࡟ࡼࡗ࡚ࡑࡢᙧ≧ࡀኚ໬ࡍࡿࠋ
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)LJ  7\SLFDO FDOLEUDWLRQ FXUYH IRULULGLXP)LJ  7\SLFDO FDOLEUDWLRQ FXUYH IRURVPLXPᶆ‽ᒾ▼ヨᩱࡢ⧞ࡾ㏉ࡋ ᐃSHULGRWLWH -3 ᐃ࡟ࡣ໭ᾏ㐨ᖠ‶ࡢ࠿ࢇࡽࢇᒾ㸦ࢲࢼ࢖ࢺ㸧ヨᩱࢆ J ⏝࠸ࡓࠋᮏ ᐃ࡛ࡣ  ᮏᐃ㔞ἲ࡛ࡢ⧞ࡾ㏉ࡋ⢭ᗘࢆ㆟ㄽࡍࡿ  ⃰⦰ྠ఩యࡢῧຍ㔞ࢆ」ᩘヨᩱ࡛ኚ࠼ࡿࡇ࡜࡛
ILUHDVVD\ ᫬ࡢྠ఩యᖹ⾮ࡢ㐩ᡂᗘྜࢆ㆟ㄽࡍࡿࡇ࡜ࢆ┠ⓗ࡜ࡋࡓࠋࡑࡢࡓࡵ  ヨᩱ
ࡢ⧞ࡾ㏉ࡋ ᐃࢆ⾜ࡗࡓࠋ,Uࠊ2V ࡢ ᐃ⤖ᯝࢆ )LJ)LJ7DEOH7DEOH ࡟♧ࡍࠋ,Uࠊ2V ඹ࡟ ,&306 ࡛ࡢ UHIHUHQFH ࡜࡯ࡰ୍⮴ࡋ࡚࠾ࡾࠊ⧞ࡾ㏉ࡋ ᐃ࡟ࡼࡿヨᩱ㛫ࡢࡤࡽࡘࡁࡶྠ⛬ᗘ࡛࠶ࡿࡇ࡜ࡀศ࠿
ࡿࠋࡉࡽ࡟୍ᗘ࡟౑⏝ࡋࡓヨᩱࡢ㔞ࡀ௚ࡢUHIHUHQFH ࡛ࡣᩘ J ⛬ᗘ࡟ᑐࡋࠊᮏᡭἲ࡛ࡣ
J ⏝࠸࡚࠸ࡿࡇ࡜࠿ࡽࠊᮏᡭἲ࡟ࡼࡿ್ࡀ
඲ᒾ⃰ᗘ࡜ࡋ࡚ࡼࡾ☜ᗘࡀ㧗࠸࡜⪃࠼ࡽࢀࡿࠋࡲࡓ QDWXUDO3*(VVSLNHG3*(V ࡢ㔞ẚࢆኚ໬ࡉࡏ࡚ࡶࠊྛヨᩱ㛫࡛࡯ࡰྠ⛬ᗘࡢ್ࡀᚓࡽࢀ࡚࠸ࡿࡇ࡜࠿ࡽࠊILUHDVVD\ ࡢẁ㝵࡛ῧຍࡋࡓ⃰⦰ྠ఩య࡜ᒾ▼୰ࡢඖ⣲࡜ࡀ⁐⼥ࡢ㝿࡟ྠ఩యᖹ⾮ࢆ⤒㦂ࡋ࡚࠸ࡿࡇ࡜
ࡀ᫂ࡽ࠿࡟࡞ࡗࡓࠋ)LJXUH$QDO\WLFDO UHVXOWV RI ,U FRQFHQWUDWLRQ
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IRU-%EDQGUHIHUHQFHGDWDIRU-%EDQG
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RSHQGLDPRQGLQGLFDWHGDWDRI5HIHUHQFHVs,U ࡜㧗⢭ᗘࠊ㧗☜ᗘ࡛ ᐃࡉࢀ࡚DQGUHVSHFWLYHO\࠸ࡿࠋࡲࡓᙼࡽࡣ౑⏝ࡋࡓᒾ▼ヨᩱࡢ㔞ࡀPJ ࡜㠀ᖖ࡟ᑡ࡞࠸ࡢ࡟ࡶ㛵ࢃࡽࡎヨᩱ㛫ࡢࡤࡽࡘࡁࡀ㠀ᖖ࡟ᑡ࡞࠸ࠋᮏ◊✲࡛ࡣᙼࡽࡢᡭἲ࡟ẚ࡭࡚  ಸࡢ㔞ࡢᒾ▼ヨᩱ%DVDOW -%E ࢆ⏝࠸ࡓࡢ࡟ࡶ㛵ࢃࡽࡎ ,U ⃰ᗘࡢヨᩱ㛫ࡢࡤࡽࡘࡁࡀ㠀ᖖ࡟኱ࡁ࠿ࡗࡓࠋ%&5 ࡣὥỈ⋞ᐃ࡟ࡣ㛗ᓮ┴బୡಖࡢ⋞ṊᒾヨᩱṊᒾ࡜࠸ࢃࢀࠊ኱㔞ࡢ⋞Ṋᒾ㉁⁐ᒾࡀὶࢀ
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⁐ᒾࡢ⢓ᛶࡣᬑ㏻ࡢ⋞Ṋᒾ࡟ẚ࡭ࠊᴟࡵ࡚
7DEOH ࡟♧ࡍࠋప࠸ࠋࡲࡓ 5&5 ࡢㄪ〇࡟࠾࠸࡚ࡩࡿ࠸ࢆ
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࡜࠿ࡽࡶ௚ࡢ⋞Ṋᒾ࡟ẚ࡭ࠊඖ⣲ࡢᆒ㉁ᗘ
ࡣ㧗࠸࡜⪃࠼ࡽࢀࡿࠋ-%E ࡢ ,U ⃰ᗘࡢࡤࡽࡘࡁࡢཎᅉ࡜ࡋ࡚  ,U ࡣᑡᩘࡢ◲໬㖔≀࡟⃰㞟ࡋ࡚࠸ࡿࡓࡵ୙ᆒ㉁ᛶࡀ㧗࠸ࠊ
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ࡑࡢࡲࡲẚ㍑ࡍࡿࡇ࡜ࡀ࡛ࡁ࡞࠸ࡀࠊ
02GGRQHHWDO  ࡢ 86*6* ࡢ JUDQLWH
ࡢࢹ࣮ࢱ࡜ẚ㍑ࡍࡿ࡜⧞ࡾ㏉ࡋ ᐃ࡟ࡼࡿࡤࡽࡘࡁࡀ -*D ࡟㛵ࡋ࡚ࡣ࡯ࡰྠ⛬ᗘ࡜- 239 -

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JAEA-Review 2013-040

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JAEA-Review 2013-040

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JAEA-Review 2013-040ࡉࡲࡊࡲ࡞ᆅẆ≀㉁࡬ࡢᛂ⏝ศᯒヨᩱ౑⏝ࡋࡓᆅẆ≀㉁ࡣ௨ୗࡢ࡜࠾ࡾ࡛࠶ࡿࠋ⋞ Ṋ ᒾ ࡜ ࡋ ࡚ ࠊ ఀ ㇋ ኱ ᓥ ࡢ WKROHLLWLF
EDVDOW㸦-%㸧ࠊᒣ᲍┴㬆ἑᮧࠊ⛅⏣┴᳃ྜྷᒣࡢ KLJKDOXPLQDEDVDOW㸦-%5㸧ࠊ⛅⏣┴⏨㮵༙ᓥᐮ㢼ᒣࡢ DONDOLQHEDVDOW㸦.$㸧ࢆ⏝࠸ࡓࠋⰼᓵᒾ࡜ࡋ࡚ࠊᒱ
㜧┴ⱑᮌࡢ ELRWLWHJUDQLWH㸦-*㸧ࠊឡ▱┴ᒸᓮࡢ ELRWLWHJUDQLWH㸦%X㸧ࠊ
ELRWLWHPXVFRYLWHJUDQLWH$%ࠊ
PXVFRYLWHELRWLWHJUDQLWH㸦㸧ࠊᒾᡭ┴㔩▼ࡢ JUDQRGLRULWH㸦NXULKDVKL㸧ࠊ࣮࢜ࢫࢺࣛࣜ࢔༡ᮾ㒊ࡢ 6W\SHJUDQLWH
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ᒾࡢ ,U ⃰ᗘ࡜࡯ࡰྠࡌ್ࢆ♧ࡋࡓࠋ6W\SHⰼᓵᒾ࡜ ,W\SH ⰼᓵᒾ࡟࠾࠸࡚ ,U ⃰ᗘ࡟ⱝᖸࡢᕪ␗ࡣぢࡽࢀࡿࡀࠊⰼᓵᒾࡢ⧞ࡾ㏉ࡋ⢭ᗘ࠿ࡽ⪃࠼ࡿ࡜ࠊ୧⪅࡛≉࡟ᕪ␗ࡣ࡞࠸ ࡜ ぢ ࡿ ࡢ ࡀ ጇ ᙜ ࡛ ࠶ ࡿ ࠋ
)LJXUH$QDO\WLFDO UHVXOWV RI ,U FRQFHQWUDWLRQIRUVHYHUDOEDVDOWVLQFOXGLQJ-%E7KH
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DQGHVLWHDQGJUDQLWHZKLFKDUHVKRZQLQ)LJXUHVDQGUHVSHFWLYHO\)LJXUH$QDO\WLFDO UHVXOWV RI ,U FRQFHQWUDWLRQIRUVHYHUDODQGHVLWHV7KHOLJKWDQGGDUNJUD\ EDUV DUH WKH GLVWULEXWLRQ RI ,U
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JAEA-Review 2013-040

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※࣐ࢢ࣐࠿ࡽࡢ ,U ࡢศ㓄ࡣ -*Dࠊ-*ࠊ-* ࡛ࡣྠ⛬ᗘ࡛࠶ࡿࡇ࡜ࡀࢃ࠿ࡿࠋ
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,U ࡢྵ᭷㔞ࡀ࣐ࢢ࣐ࡢศ໬ࡢ㐪࠸࡟ࡼࡗ࡚
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JAEA-Review 2013-040

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JAEA-Review 2013-040

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5DGLRDQDO1XFO&KHP  
.6KLQRWVXND.6X]XNLDQG<7DWVXPL
,)5((5HSRUW  
16KLUDL71LVKLQR;/L+$PDNDZDDQG0(ELKDUD*HRFKHP-  
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 
.0DVXPRWRDQG0<DJL-5DGLRDQDO1XFO&KHP  77DQDND56HQGD66KLEDWD00LQDPLDQG07DQLPL]XDEVWUDFW*ROGVKPLGW
59'5REHUW(YDQ:\NDQG53DOPHU-RKDQQHVEXUJ 1DWLRQDO ,QVWLWXWH IRU0HWDOOXUJ\5HSRUW  ,0F'RQDOG5-+DUWDQG07UHGRX[$QDO&KLP$FWD  
(/+RIIPDQ$-1DOGUHWWDQG-&
9DQORRQ$QDO&KLP$FWD  
73DXNHUWDQG,5XYHVND$QDO&KLP
$FWD  
;//LDQG0(ELKDUD-5DGLRDQDO1XFO&KHP  

4-3- 245 -

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JAEA-Review 2013-040

.$UDL<6DLWRDQG..LPXUDDEVWUDFWQG6\PS5DGLRFKHP   ᒾ࠿ࡽ⏘ࡋࡓᚋᮇ୕␚⣖ࢥࣀࢻࣥࢺࠋྡྂᒇ ኱Ꮫ༤≀㤋ሗ࿌  ྕ

 . .LPXUD DQG . $UDL 3HUVRQDOᾂώ㕥ᮌ࿴༤㻌 䞉㻌 ளဋԧࢀ㻌 䞉㻌 ⏣୰㻌 ๛㻌 㻔㻞㻜㻜㻥㻕㻌 㻌

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-DSDQ  㻌 㻌 䛧䛯ᚋᮇ୕␚⣖䝁䝜䝗䞁䝖䚹ྡྂᒇ኱Ꮫ༤≀㤋ሗ 0 $\DEH < +LUDR DQG . .LPXUD5DGLRLVRWRSHV   ࿌  ྕ㻌ᾃώ༾‫ޢ‬ᑣ᠒ẆකဋႺ೔Ẇႉ߷ჷऔẆᅕဋỡẦẆᴾ

*$JLRUJLWLV70307VFKUPDNV0LQ3HWU
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02GGRQH1*HQRYDDQG60HORQL-ᴾ ᵆᵐᵎᵎᵗᵇᴾ ્‫ݧ‬ዴửਦ೅ểẴỦ࿢‫ؾ‬ᚸ̖૙Ꮛỉᴾ

5DGLRDQDO1XFO&KHP  

ᴾ ᧏ਏώӸӞ‫ܖٻދ‬Ҧཋ᫾‫إ‬ԓ  ྕᴾ

&)&KDL6/0D;<0DR.1/LDR㸳㸬⏣୰๛  ࢸ࣭࣮ࣝ࢞ࢿ࣒࢔ࣜࡢᅵࡣ

DQG:&/LX-5DGLRDQDO1XFO&KHP ࣅࢩࣗࣜྎᆅ࠿ࡽ㐠ࡤࢀࡓ㸽Ѹኳ↛ᨺᑕ⥺   ࢆ⏝࠸ࡓᅵተᑐẚࡢヨࡳѸ ᩥ㒊⛉Ꮫ┬⛉Ꮫ02GGRQH60HORQLDQG59DQQXFFL-
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6,VKLKDUD0LQLQJ*HRO     ▼⅊㉁◁ᒾࡢⅣ⣲  ࢆᣦᶆ࡜ࡍࡿ㢼 ໬ホ౯ࠋྡྂᒇ኱Ꮫຍ㏿ჾ㉁㔞ศᯒィᴗ⦼ሗ ࿌᭩㸦;;㸧      㸺ᡂᯝࡢබ⾲㸼㸷㸬୰ᮧಇኵ࣭ᫍ㔝ග㞝࣭⏣୰๛࣭ᮌෆᬛᗣ࣭

+RVKLQR07DQDND71DNDPXUD7 ኴ⏣཭Ꮚ  ࢩࣜ࢔ 7HOO+DPPDGLQ 㑇㊧<RVKLGD+6DLWR77VXNDGD.

 ࠿ࡽ᥇ྲྀࡋࡓᮌⅣࡢ & ᖺ௦

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WKH)RXUWKZRUNLQJVHDVRQ*HRORJLFDO㕥ᮌ࿴༤࣭ᒣ໭ ⪽࣭୹⩚⪔㍜࣭᮰⏣࿴ᘯ࣭DQGJHRJUDSKLFDOILHOGVXUYH\$/5$),'$1

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- 246 -

ᐃ㸬ྡྂᒇ኱Ꮫ

4-3

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4-3

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㻣㻝

JAEA-Review 2013-040

4-4㺀ᾏὒࣂࢡࢸࣜ࢔୰ࡢᚤ㔞㔠ᒓඖ⣲ࡢᐃ㔞㺁
4XDQWLWDWLYHDQDO\VLVRIWUDFHPHWDOVLQPDULQHEDFWHULDᮾிឿᜨ఍་⛉኱Ꮫ ࢔࢖ࢯࢺ࣮ࣉᐇ㦂◊✲᪋タ  ⟪㍯ࡣࡿ࠿

A. ◊✲ࡢ┠ⓗ࡜ព⩏ࢫ࢟ࣥ᥇Ỉჾ࡟ࡼࡾ῝ᗘู࡟᥇ỈࡋࠊᾏᗏἾヨᩱ ᆅ⌫ࡢ≀㉁ᚠ⎔࡟࠾࠸࡚ᾏὒࡢᯝࡓࡍᙺ๭ࡣ

ࡣࠊ࣐ࣝࢳࣉࣝࢥ࢔࣮ࣛࢆ⏝࠸࡚᥇Ἶࡋࡓࠋ௨ୗ

኱ࡁ࠸ࠋᾏỈ୰ࡢᚤ㔞ඖ⣲ࡢᣲືࢆㄪ࡭ࡿ㝿࡟ࡣࠊ࡟⯟ᾏ␒ྕࠊ

ඖ⣲ࡀᾏỈ࡟⁐Ꮡࡍࡿሙྜ࡜ࠊ㠀⏕≀⢏Ꮚ࡟௜╔᭶᪥ࠊ᥇Ỉ࣭᥇Ἶ῝ᗘࢆ♧ࡍࠋࡍࡿሙྜࠊࣂࢡࢸࣜ࢔➼ࡢ⏕≀୰࡟Ꮡᅾࡍࡿሙྜ

B-1-1. ᾏỈヨᩱ࡜࡛ࡣࠊࡑࢀࡒࢀᣲືࡀ␗࡞ࡿࡇ࡜ࡀண᝿ࡉࢀࡿࠋ

Cruise No.KT-06-31, S1 ( 㯮 ₻ እ ഃ 33º06‫މ‬N,ᾏὒ࡟࠾ࡅࡿඖ⣲ࡢศᕸ࡟㛵ࡋ࡚ࡢ◊✲ࡣከ࠸

138º05‫މ‬E, 4060m), 2006.12.7, Depth: 300, 1000,ࡀࠊࣂࢡࢸࣜ࢔ࡢᙳ㡪ࡣ࠶ࡲࡾ㔜どࡉࢀ࡚࠸࡞࠸ࠋ

3000m⇕Ỉ㖔ᗋ➼࡟࠾ࡅࡿ◊✲࡟ࡼࢀࡤࠊ㔠ᒓඖ⣲ࢆྲྀ

S2 ( 㯮 ₻ ෆ ഃ 33º51‫މ‬N, 138º17‫މ‬E, 3780m),

ࡾ㎸ࡴࣂࢡࢸࣜ࢔ࡣᩘከࡃᏑᅾࡍࡿࠋࡋ࠿ࡋࠊࡇ

2006.12.8, Depth: 300, 1000, 3000m

ࢀࡽࡢࣂࢡࢸࣜ࢔ࡀ⇕Ỉ‪Ỉ௨እࡢእὒ㡿ᇦ࡟

Cruise No.KT-07-16, S0 ( 㯮 ₻ እ ഃ 30º00‫މ‬N,Ꮡᅾࡍࡿࡢ࠿ྰ࠿ࠊᚤ㔞ඖ⣲ࡢᚠ⎔࡟ࣂࢡࢸࣜ࢔

138º00‫މ‬E, 4000m), 2007.7.13, Depth: 200, 1000,ࡀ࡝ࡢࡼ࠺࡞ᙺ๭ࢆᯝࡓࡋ࡚࠸ࡿࡢ࠿࡞࡝࡟ࡘ

3000m

࠸࡚ࡣࠊࣂࢡࢸࣜ࢔୰ࡢᚤ㔞ඖ⣲ࢆศᯒࡍࡿࡇ࡜

Cruise No.KT-09-11, S1 ( 㯮 ₻ እ ഃ 30º40‫މ‬N,

ࡀᅔ㞴࡛࠶ࡿࡓࡵ࡯࡜ࢇ࡝◊✲ࡉࢀ࡚࠸࡞࠸ࠋᮏ

138º00‫މ‬E, 3750m), 2009.7.3, Depth: 200, 1000,◊✲࡛ࡣࠊἢᓊࡢᙳ㡪ࡢᑡ࡞࠸እὒᇦ࡛᥇ྲྀࡋࡓ

3000m

ᾏỈࢆ⏝࠸࡚ࣂࢡࢸࣜ࢔ࢆᇵ㣴ࡋྲྀࡾ㎸ࡲࢀࡿS2 ( 㯮 ₻ ෆ ഃ 33º56‫މ‬N, 138º09‫މ‬E, 3300m),

ඖ⣲ࢆ

2009.7.4, Depth: 200, 1000, 3000m

ᐃࡍࡿࡇ࡜࡟ࡼࡾࠊᚤ㔞ඖ⣲ࡢᾏὒᚠ⎔Ⅼ㸦⦋ᗘ࣭⤒ᗘ࣭῝ᗘ㸧ࠊ᥇ྲྀᖺ࡟࠾ࡅࡿࣂࢡࢸࣜ࢔ࡢᙺ๭ࢆゎ᫂ࡍࡿࡇ࡜ࢆ┠P (┦ᶍ‴ 35º00‫މ‬N, 139º22‫މ‬E, 1400m), 2009.7.5,ⓗ࡜ࡋࡓࠋDepth: 200, 1000, 1386m

 ◊✲ࡢලయⓗ࡞┠ⓗࡣ௨ୗࡢ࡜࠾ࡾ࡛࠶ࡿࠋ

B-1-2. ᾏᗏἾヨᩱ㸯㸬ᾏỈ୰ࡢࣂࢡࢸࣜ࢔࡟⃰㞟ࡉࢀࡿ㔜㔠ᒓඖ⣲

Cruise No.KT-07-16, T5 ( ᮾ ி ‴ 35º02‫މ‬N,ࢆᐃࡍࡿࠋ㸯㸫a ᾏỈ࠿ࡽࣂࢡࢸࣜ࢔ࢆᅇ཰ࡋ

139º50‫މ‬E, 76m), 2007.7.10 ᾏᗏ 76m ࢥ࢔⾲ᒙ࡚ᐃࡋࠊ㔜㔠ᒓඖ⣲ࡢᐃ㔞ࡀྍ⬟࠿ㄪ࡭ࡿࠋ㸯

T6 (ᮾி‴ 34º35‫މ‬N, 140º00‫މ‬E, 800m), 2007.7.10,

㸫b ᾏỈ࡟㔜㔠ᒓඖ⣲ࢆῧຍࡋ࡚ᇵ㣴ࡋࠊࣂࢡࢸ

ᾏᗏ 800m ࢥ࢔⾲ᒙࣜ࢔࡬ࡢ྾╔⋡ࢆㄪ࡭ࡿࠋ㸰㸬㔜㔠ᒓඖ⣲ࢆῧຍP1ࡋࡓᇵᆅࢆ⏝࠸࡚ᾏᗏἾ࠿ࡽࣂࢡࢸࣜ࢔ࢆ᥇ྲྀ

2007.7.11, ᾏᗏ 1500m ࢥ࢔⾲ᒙࡋࠊ㔜㔠ᒓඖ⣲ࢆ≉␗ⓗ࡟⃰㞟ࡍࡿᾏὒࣂࢡࢸࣜ

S0 ( 㯮 ₻ እ ഃ 30º00‫މ‬N, 138º00‫މ‬E, 4000m),

࢔ࢆ᥈⣴ࡋࠊࡑࡢ⏕ែࢆㄪᰝࡍࡿࠋ

2007.7.13, ᾏᗏ 4000m ࢥ࢔⾲ᒙ

B. ◊✲ࡢ᪉ἲ

B-2㸬ࣂࢡࢸࣜ࢔ࡢᇵ㣴B-1㸬ヨᩱ

B-2-1. ᾏỈᇵ㣴ᐇ㦂 ヨᩱࡣࠊᾏὒ◊✲㛤Ⓨᶵᵓ㸦JAMSTEC㸧ࡢᏛ ᾏỈヨᩱ⣙ 1L ࢆ࣓ࣥࣈࣞࣥࣇ࢕ࣝࢱ㸦0.2ȣ

⾡◊✲⯪ࠕῐ㟷୸ࠖ࡟ࡼࡿ◊✲⯟ᾏ࡟࠾࠸࡚᥇ྲྀ

m, Isopore, Millipore㸧ࢆ⏝࠸࡚྾ᘬℐ㐣ࡋࠊࡇࡋࡓᾏỈ࠾ࡼࡧᾏᗏἾࢆ⏝࠸ࡓࠋᾏỈヨᩱࡣࠊࢽࡢ࣓ࣥࣈࣞࣥࣇ࢕ࣝࢱࢆ⵹ࡘࡁࡢᐜჾ࡟ධࢀࠊᇵ( ┦ ᶍ ‴

35º00‫މ‬N,

139º20‫މ‬E,

1500m),

JRR-3ࠊPN-1, PN-3ࠊᨺᑕ໬ศᯒ㸦⎔ቃ࣭⏕≀ヨᩱ㸧- 248 -

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JAEA-Review 2013-040㣴ᾮࢆධࢀ࡚ᇵ㣴ࡋࡓࠋ

B-3-2. ୰ᛶᏊ↷ᑕ᮲௳࠾ࡼࡧ࣐࢞ࣥ⥺ᇵ㣴ᾮ⤌ᡂ㸸⁛⳦ᾏỈ 100mlࠊ0.02%ࢢࣝࢥ࣮ࢫࠊ

a. ▷᫬㛫↷ᑕ࣑ࢿࣛࣝ (Fe, Mn, Co, Cu, Cr)㸹ᇵ㣴᮲௳㸸෭ᬯᐃ㔞┠ⓗඖ⣲㸸Mg, V, Cu, Mn㸹ཎᏊ⅔㸸JRR-3,

ᡤࠊ⣙㸱࢝᭶

PN-3㸹↷ᑕ᫬㛫㸸10 ⛊㸹෭༷᫬㛫㸸200 ⛊ࠊ8000

B-2-2. ᾏᗏἾ࠿ࡽࡢᇵ㣴⛊㸹 ᾏᗏἾヨᩱ⣙ 0.5g ࢆࢡ࣒ࣟ࢔ࢬ࣮ࣝᖹᯈᇵᆅ

ཎᏊຊ◊✲㛤Ⓨᶵᵓ JRR-3 ⅔ᐊෆᨺᑕ໬ศᯒᐊ

࡟᥋✀ࡋࡓࠋࡇࡢᇵᆅࡣࠊ㕲ࡢ㘒࢖࢜ࣥࢆྵࡳ㟷Ge ༙ᑟయ᳨ฟჾ

Ⰽࢆ࿊ࡋࠊࣂࢡࢸࣜ࢔࡟ࡼࡗ࡚㕲ࡀᾘ㈝ࡉࢀࡿ࡜

b. 㛗᫬㛫↷ᑕ㟷Ⰽࡀ⬺Ⰽࡉࢀ࡚࢜ࣞࣥࢪⰍࢆ࿊ࡍࡿࠋⓎ⏕ࡋࡓᐃ㔞┠ⓗඖ⣲㸸Fe, As, Cd, Cr, Sc, Co㸹ཎᏊ⅔㸸

ࢥࣟࢽ࣮ࡢ࠺ࡕࠊᇵᆅࡀ⬺Ⰽࡉࢀࡓࢥࣟࢽ࣮࠾ࡼ

JRR-3, PN-1㸹↷ᑕ᫬㛫㸸10 ศ㸹෭༷᫬㛫㸸8 ᪥ࠊࡧ╔Ⰽࡋࡓࢥࣟࢽ࣮ࢆ㑅ࡧࠊศᯒヨᩱ࡜ࡋࡓࠋ

40 ᪥㸹 ᐃ᫬㛫㸸12000 ⛊ࠊ30000 ⛊㸹 ᐃ⿦⨨㸸ᇵᆅ⤌ᡂ㸸3%࢔࣮࢞ࣟࢫࠊ6%NaClࠊ0.1%ࢢࣝࢥ

᪥ᮏཎᏊຊ◊✲㛤Ⓨᶵᵓ ኱Ꮫ㛤ᨺ◊ᐇ㦂ᐊ Ge

࣮ࢫࠊ0.02M-HEPESࠊࣜࣥ㓟⦆⾪ᾮࠊࢡ࣒ࣟ࢔

༙ᑟయ᳨ฟჾ ASC-20 ࠾ࡼࡧ ASC-40

ࢬ࣮ࣝ SࠊHDTMAࠊ࣑ࢿࣛࣝ (Fe, Mn, Co, Cu,

B-3-3. ᶆ‽ヨᩱCr, Mg, Ni, K, Ca)㸹ᇵ㣴᮲௳㸸18Υࠊ⣙㸯࢝᭶┠ⓗࡢ 10 ඖ⣲(Fe, Mg, V, Cu, Mn, As, Cd, Cr, Sc,ᐃ᫬㛫㸸100 ⛊ࠊ300 ⛊㸹ᐃ᮲௳ᐃ⿦⨨㸸᪥ᮏCo)ࡢ໬Ꮫヨ⸆⁐ᾮࢆࢁ⣬ୖ࡟⁲ୗࠊ஝ᅛࡉࡏࡓࠋ
B-3㸬ඖ⣲ࡢᐃ㔞a. ▷᫬㛫↷ᑕ⏝ᶆ‽ヨᩱ㸦ィ⟬ୖ 10 ⛊↷ᑕ 100

B-3-1. ୰ᛶᏊ↷ᑕヨᩱࡢసᡂ⛊ᚋ࡟ 100cps ࡜࡞ࡿࡼ࠺ㄪᩚࡋࡓ㸧a. ᾏỈヨᩱ࣐ࢢࢿࢩ࣒࢘(1mgMg)ࠊࣂࢼࢪ࣒࢘(0.01mgV)ࠊ

 ᾏỈヨᩱ࡟ࠊ25%࢔ࣥࣔࢽ࢔Ỉ 5 ml ࢆຍ࠼࡚㖡(0.1mgCu)ࠊ࣐ࣥ࢞ࣥ(0.01mgMn)ỿẊࢆ⏕ᡂࡋ୍ᬌ㟼⨨ࡋࡓࠋୖ⃈ࡳࢆᤞ࡚ࠊỿẊb. 㛗᫬㛫↷ᑕ⏝ᶆ‽ヨᩱ㸦ィ⟬ୖ 10 ศ↷ᑕ 7 ᪥ࢆ㉥እ⥺ࣛࣥࣉୗ࡛஝ᅛࡋࡓࠋ ஝ᅛࡋࡓỿ⃦⢊ᚋ࡟ 100cps ࡜࡞ࡿࡼ࠺ㄪᩚࡋࡓ㸧ᮎࢆ㔜㔞㕲 (0.1gFe) ࠊ ◉ ⣲ (0.01mgAs) ࠊ ࢝ ࢻ ࣑ ࢘ ࣒ᐃࡋࠊ⢊ᮎヨᩱࢆ࣏࢚ࣜࢳࣞࣥ⿄࡟ධࢀ࡚⛗㔞ࡋࠊ↷ᑕ⏝ヨᩱ࡜ࡋࡓࠋ

(0.1mgCd) ࠊ ࢡ ࣟ ࣒ (0.1mgCr) ࠊ ࢫ ࢝ ࣥ ࢪ ࢘ ࣒b. ᇵ㣴ᾮࣂࢡࢸࣜ࢔ศ⏬

(0.01mgSc)ࠊࢥࣂࣝࢺ(0.01mgCo) ᾏỈᇵ㣴ᾮࢆ࣓ࣥࣈࣞࣥࣇ࢕ࣝࢱ㸦0.2ȣm,Isopore, Millipore㸧ࢆ⏝࠸࡚྾ᘬℐ㐣ࡋࠊ࣓ࣥࣈ

B-4㸬⳦✀ࡢྠᐃࣞࣥࣇ࢕ࣝࢱࢆᐊ ᇵ㣴ᾮ୰ࡢࣂࢡࢸࣜ࢔ࢆྵࡴỿẊ≀࠶ࡿ࠸ࡣ࡛஝⇱ࡉࡏ࡚⛗㔞ࡋࡓࡢࡕࠊ

↷ᑕ⏝ヨᩱ࡜ࡋࡓࠋ

ᖹᯈᇵᆅୖࡢࢥࣟࢽ࣮࠿ࡽࠊ࢚ࢱࣀ࣮ࣝỿẊἲ࠶c. ᇵ㣴ᾮℐᾮࡿ࠸ࡣ ISOIL for Beads Beading㸦ࢽࢵ࣏ࣥࢪ࣮ ᇵ㣴ᾮࢆℐ㐣ࡋࡓℐᾮ࡟ࠊ25%࢔ࣥࣔࢽ࢔Ỉ 5ࣥ㸧ࢆ⏝࠸࡚ DNA ࡢᢳฟࢆ⾜ࡗࡓࠋ16S-rDNA

ml ࢆຍ࠼࡚ỿẊࢆ⏕ᡂࡋ 2㹼3 ᪥㟼⨨ࡋࡓࠋୖ⃈ࣘࢽࣂ࣮ࢧࣝࣉࣛ࢖࣐࣮ࠊBigDye Terminatorࡳࢆᤞ࡚ࠊỿẊࢆ㉥እ⥺ࣛࣥࣉୗ࡛஝ᅛࡋࡓࠋ஝

v3.1

ᅛࡋࡓỿ⃦⢊ᮎࢆ㔜㔞

Biosystems 㸧 ࢆ ⏝ ࠸ ࡓ PCR ཯ ᛂ ࢆ ⾜ ࡞ ࠸ᐃࡋࠊ⢊ᮎヨᩱࢆ࣏࢚ࣜCycle

Sequencing

Kit 㸦 Applied

ࢳࣞࣥ⿄࡟ධࢀ࡚⛗㔞ࡋࠊ↷ᑕ⏝ヨᩱ࡜ࡋࡓࠋ

16S-rDNA ࢆቑᖜࡋࠊABI PRISM DNA ࢩ࣮ࢡ࢚d. ᇵ㣴ࢥࣟࢽ࣮

ࣥࢧ࣮㸦Applied Biosystems㸧࡟ࡼࡾ DNA 㓄ิ ࢔࣮࢞ࣟࢫᖹᯈᇵᆅୖࡢࢥࣟࢽ࣮ࢆ࣑ࢡࣟࢫ

ゎᯒࢆ⾜ࡗࡓࠋBLAST ࢆ⏝࠸ࡓ┦ྠᛶ᳨⣴࡟ࡼࣃ࣮ࢸ࡛ࣝษࡾྲྀࡾࠊℐ⣬ࡢୖ࡛஝⇱ࡉࡏࠊℐ⣬

ࡾ✀ࢆྠᐃࡋࡓࠋ

ࡈ࡜↷ᑕ⏝ヨᩱ࡜ࡋࡓࠋ

 16S-rDNA ࣘࢽࣂ࣮ࢧࣝࣉࣛ࢖࣐࣮ࡣࢹ࣮ࢱ
࣮࣋ࢫ࠿ࡽ㓄ิࢆỴᐃࡋసᡂࡋࡓࠋሷᇶ㓄ิࡣ௨

JRR-3ࠊPN-1, PN-3ࠊᨺᑕ໬ศᯒ㸦⎔ቃ࣭⏕≀ヨᩱ㸧- 249 -

4-4
㻣㻟

JAEA-Review 2013-040ୗࡢ࡜࠾ࡾ࡛࠶ࡿࠋPrimer F (forward): AGA

C-3-3. ⳦✀ྠᐃ⤖ᯝ

GTT TGA TCA TGG CTC AG; Primer R ࢡ࣒ࣟ࢔ࢬ࣮ࣝᇵᆅ࡟ࡼࡾᇵ㣴ࡉࢀ㉥Ⰽࢆ࿊(reverse): ACG GTT ACC TTG TTA CGA CTTࡋࡓࢥࣟࢽ࣮ࡢࣂࢡࢸࣜ࢔ࡣࠊ16S-rDNA ࢩ࣮ࢡ࢚ࣥࢫゎᯒ࡟ࡼࡾ Roseobacter㸦ࣟࢮ࢜ࣂࢡࢱ࣮㸧C. ⤖ᯝ࣭ᡂᯝ

࡛࠶ࡿ࡜ྠᐃࡋࡓࠋ

C-1㸬ᾏỈ୰ࡢඖ⣲⤌ᡂ ᾏỈヨᩱ࠿ࡽ඲ヨᩱ࡛ᐃ㔞࡛ࡁࡓඖ⣲ࡣ Mg ࡛ࠊ⾲㸯㸬ᾏỈᇵ㣴ᐇ㦂࡟࠾ࡅࡿࣂࢡࢸࣜ࢔ศ⏬୰ࡢᾏỈ㸯㹊୰࡟ྵࡲࢀࡿ Mg ࡣ 0.2㹼0.4g ࡛࠶ࡗࡓࠋ

㕲࠾ࡼࡧࢡ࣒ࣟ㔞Mg ྵ᭷㔞ࡣࠊྠ୍Ⅼ࡟࠾࠸࡚ὸ࠸㡿ᇦ㸦200

᥇Ỉ

㕲ῧ

῝ᗘ

ຍ㔞

ࡢヨᩱࡼࡾࡶ኱ࡁ࠸್࡜࡞ࡿഴྥࡀ࠶ࡗࡓࠋFe,m

ȣg

Co, Mn, Cr, Sc, V ࡣ࠸ࡃࡘ࠿ࡢヨᩱ࡛ᐃ㔞࡛ࡁࠊ

200

50 25±3

n.d.

1000

50 26±3

n.d.

3000

50 23±2 0.21±0.03

200

50 24±2 0.12±0.03

1000

50 25±2

n.d.

3000

50 14±1

n.d.

200

250 108±4 0.22±0.03

1000

250 117±4 0.24±0.03

3000

250 135±4 0.28±0.03

200

250 135±4 0.27±0.04

1000

250 96±5 0.24±0.03

3000

250 113±4࠶ࡿ࠸ࡣ 300m㸧ࡢヨᩱࡢ᪉ࡀ῝࠸㡿ᇦ㸦3000m㸧

Cu, As, Cd ࡣ඲ヨᩱ᳨࡛ฟ㝈⏺௨ୗ࡛࠶ࡗࡓࠋ

⯟ᾏ␒ྕ

KT-09-11

Ⅼ

S1

C-2㸬ᾏỈᇵ㣴ᐇ㦂
C-2-1. ඖ⣲ᐃ㔞⤖ᯝ

KT-09-11S2 ᾏỈࠊᇵ㣴ᾮ㸦ℐᾮ㸧࠾ࡼࡧᇵ㣴ࡋࡓࣂࢡࢸࣜ
࢔୰ࡢ Mg, Fe, Co, Cr, Mn ࢆᐃ㔞ࡋࡓࠋࣂࢡࢸࣜ
࢔ศ⏬୰ࡢ㕲࠾ࡼࡧࢡ࣒ࣟ㔞ࡢ୍㒊ࢆ⾲㸯㸬࡟♧ࡍࠋࣂࢡࢸࣜ࢔࡟ࡼࡾᤕ㞟ࡉࢀࡓඖ⣲ࡣ Fe ࡛࠶

KT-09-11

S1ࡗࡓࠋࣂࢡࢸࣜ࢔࡟ࡼࡗ࡚ᤕ㞟ࡉࢀ࡟ࡃ࠿ࡗࡓඖ
⣲ࡣ Mg, Co, Mn ࡛࠶ࡗࡓࠋCr ࡣࠊNo. KT-06-31.
S1㸦㯮₻እഃ㸧ヨᩱ࡛ࡣࣂࢡࢸࣜ࢔ศ⏬࡟⃰㞟ࡋ࡚࠸ࡓࡀ No. KT-06-31. S2㸦㯮₻ෆഃ㸧ヨᩱ࡛ࡣℐᾮ୰ྵ᭷㔞ࡀࣂࢡࢸࣜ࢔ศ⏬୰ྵ᭷㔞ࡼࡾ኱ࡁ࠸࡞࡝ࠊヨᩱ࡟ࡼࡗ࡚㐪࠸ࡀ࠶ࡗࡓࠋ

S2

ࢡ࣒ࣟ

ȣg

ȣg

n.d.

 ࢡ࣒ࣟῧຍ㔞 0.3ȣgࠊn.d.㸸᳨ฟ㝈⏺௨ୗD. ⪃ᐹ࣭ホ౯

C-2-2. ⳦✀ྠᐃ⤖ᯝ ᾏỈᇵ㣴ᐇ㦂࡛ᇵ㣴ࡉࢀࡓ᭱ࡶඃໃ࡞✀ࡣࠊ
16S-rDNA ࢩ ࣮ ࢡ ࢚ ࣥ ࢫ ゎ ᯒ ࡟ ࡼ ࡾ Bacillus

Subtilis㸦ᯤⲡ⳦㸧࡛࠶ࡿ࡜ྠᐃࡋࡓࠋ

D-1. ศᯒᡭἲࡢ☜❧ ୰ᛶᏊᨺᑕ໬ศᯒἲࢆᾏỈヨᩱ࡟㐺⏝ࡋࠊඖ⣲ࡢᐃ㔞ࢆ⾜࡞ࡗࡓࠋ඲ヨᩱ࡛ᐃ㔞࡛ࡁࡓ࣐ࢢࢿࢩ
࣒࢘ࡣᾏỈࡢ୺ᡂศ࡛࠶ࡿሷศ㔞ࢆ཯ᫎࡋ࡚࠸
ࡿࡶࡢ࡜ᛮࢃࢀࡿࠋࢥࣂࣝࢺࡣࠊ࡯࡜ࢇ࡝ࡢヨᩱ

C-3 ᾏᗏἾ࠿ࡽࡢᇵ㣴࡛ࣂࢡࢸࣜ࢔ศ⏬୰࡟ࡣ᳨ฟࡉࢀࡎࠊℐᾮ୰࡟Ꮡ

C-3-1. ᇵ㣴⤖ᯝ ࢡ ࣟ ࣒ ࢔ࢬ ࣮ ࣝ ᇵ ᆅ࡟ ࡼ ࡾ ᇵ 㣴ࡋ ࡓ ⤖ ᯝ ࠊ
Cruise No.KT-07-16, S0 ᾏᗏἾࢥ࢔⾲ᒙヨᩱࢆ⏝࠸࡚ᇵ㣴ࡋࡓᇵᆅ࡟㉥Ⰽࢆ࿊ࡍࡿࢥࣟࢽ࣮ࡢ
Ⓨ⏕ࡀㄆࡵࡽࢀࡓࠋ

ᅾࡋ࡚࠸ࡓࠋࡋࡓࡀࡗ࡚ࡇࡢᇵ㣴᮲௳࡛ࢥࣂࣝࢺ
ࡣࣂࢡࢸࣜ࢔࡟྾╔࣭ᤕ㞟ࡉࢀࡿࡇ࡜ࡣ࡞࠿ࡗࡓ
࡜⪃࠼ࡽࢀࡿࠋᇵ㣴ᐇ㦂ࡢ㝿ࡢࢥࣂࣝࢺῧຍ㔞࠾ࡼࡧศᯒࡋࡓℐᾮ୰ࡢᐃ㔞್࠿ࡽࠊℐᾮࡢඖ⣲ᅇ཰⋡ࡣ 75㹼90%࡜ぢ✚ࡶࡗࡓࠋᾏỈ୰ࡢඖ⣲⃰ᗘ

C-3-2. ඖ⣲ᐃ㔞⤖ᯝ ㉥Ⰽࢆ࿊ࡋࡓࢥࣟࢽ࣮࡟ࠊᇵᆅࡢ 20 ಸࡢ Cr ࡢ⃰㞟ࡀࡳࡽࢀࡓࠋ

KT-09-11㕲ࢆ୰ᛶᏊᨺᑕ໬ศᯒἲ࡟ࡼࡾᐃ㔞ࡍࡿࡓࡵࡢ๓
ฎ⌮᪉ἲࢆ☜❧ࡍࡿࡇ࡜ࡀ࡛ࡁࡓࠋ

JRR-3ࠊPN-1, PN-3ࠊᨺᑕ໬ศᯒ㸦⎔ቃ࣭⏕≀ヨᩱ㸧

- 250 -

4-4
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JAEA-Review 2013-040

D-2. ࣂࢡࢸࣜ࢔࡟ࡼࡿඖ⣲ࡢ྾཰ࡉࢀࡓ㸦J. Gao et al., 2006㸧ࠋࡋ࠿ࡋࢡ࣒ࣟࡀ࡝ 㕲ࡢᐃ㔞್ࡣࠊὸ࠸㡿ᇦ㸦200m ࡲࡓࡣ 300m㸧

ࡢࡼ࠺࡟⏝࠸ࡽࢀ࡚࠸ࡿࡢ࠿ヲ⣽ࡣࡲࡔࢃ࠿ࡗ

࠿ࡽࡢヨᩱࡢ᪉ࡀ῝࠸㡿ᇦ㸦3000m㸧ࡢヨᩱࡼࡾ࡚࠸࡞࠸ࠋ㓟⣲㠀Ⓨ⏕ᆺࡢගྜᡂࢆ⾜࠺ࡇࡢࣂࢡ

ࡶ್ࡀ㧗ࡃ࡞ࡿഴྥࢆ♧ࡋࡓࠋࡇࡢࡇ࡜ࡣࠊὸ࠸

ࢸࣜ࢔ࡢ≉␗ⓗ࡞ᛶ㉁࠿ࡽࠊ࢚ࢿࣝࢠ࣮⋓ᚓᶵᵓ㡿ᇦ࡟࠸ࡿࣂࢡࢸࣜ࢔⩌ࡢ᪉ࡀ⏕⏘ᛶࡀ㧗࠸ഴࡢ㐣⛬࡟࠾࠸࡚ఱࡽ࠿ࡢᙧ࡛ࢡ࣒ࣟࢆ⏝࠸࡚࠸ྥ࡟࠶ࡿࡇ࡜ࢆ♧ࡍࠋࣂࢡࢸࣜ࢔✀ࡢྠᐃ⤖ᯝࡣࡿྍ⬟ᛶࡀ⪃࠼ࡽࢀࡿࠋ

ὸ࠸㡿ᇦࡢᾏỈࡶ῝࠸㡿ᇦࡢᾏỈࡶྠࡌ✀ࡀඃໃ࡜࡞ࡗ࡚࠸ࡓࠋᮏ◊✲࡟࠾ࡅࡿศᯒἲ࡛ࡣ᭱ࡶ

E. ࡲ࡜ࡵ࡜௒ᚋࡢ᪉㔪ඃໃ࡞✀ࡢࡳࡋ࠿ྠᐃ࡛ࡁ࡞࠸ࡓࡵࠊ῝ᗘ࡟ࡼࡿ ୰ᛶᏊᨺᑕ໬ศᯒἲࢆ㐺⏝ࡋࠊᾏỈ࠾ࡼࡧࣂࢡ

㕲྾཰⬟ࡢ㐪࠸ࡀࡑࡢᾏỈ࡟Ꮡᅾࡋ࡚࠸ࡓࣂࢡ

ࢸࣜ࢔ヨᩱ࠿ࡽᚤ㔞ඖ⣲ࢆᐃ㔞ࡍࡿ᪉ἲࢆ☜❧ࢸࣜ࢔✀ࡢ㐪࠸࡟ࡼࡿࡶࡢ࠿ࠊูࡢせᅉ࡟ࡼࡿࡶ

ࡋࡓࠋᾏỈᇵ㣴ᐇ㦂࡟ࡼࡾ㕲࠾ࡼࡧࢡ࣒ࣟࡢࣂࢡ

ࡢ࠿ࡣ୙࡛᫂࠶ࡿࠋ

ࢸࣜ࢔࡬ࡢ྾╔⋡ࢆ ࢡ࣒ࣟࡣࠊࣂࢡࢸࣜ࢔ศ⏬࡟⃰㞟ࡋࡓሙྜ࡜ℐ

ࢥࣟࢽ࣮ࢆ୰ᛶᏊᨺᑕ໬ศᯒἲ࡛ศᯒࡋࠊࢡ࣒ࣟ

ᾮ୰࡟ࡼࡾከࡃᏑᅾࡋࡓሙྜ࡜ࡀ࠶ࡗࡓࠋᚋ㏙ࡍࢆ≉␗ⓗ࡟⃰㞟ࡍࡿࣂࢡࢸࣜ࢔ࢆⓎぢࡋࡓࠋࡇࡢ

ࡿࡼ࠺࡟ᾏỈ୰࡟ࡣࢡ࣒ࣟࢆ⃰㞟ࡍࡿࡇ࡜ࡢ࡛

ࣂࢡࢸࣜ࢔࡟ 16S-rDNA ࡟ࡼࡿࢩ࣮ࢡ࢚ࣥࢫゎࡁࡿࣂࢡࢸࣜ࢔ࡀᏑᅾࡍࡿࠋࢡ࣒ࣟ⃰㞟ࡢ㐪࠸ࡣᯒࢆ⾜࡞࠸ Roseobacter㸦ࣟࢮ࢜ࣂࢡࢱ࣮㸧࡜ྠ᥇Ỉ᫬࡟ᾏỈ୰࡟ࡑࡢࡼ࠺࡞ࣂࢡࢸࣜ࢔✀ࡀᏑᐃࡋࡓࠋᅾࡋࡓ࠿࡝࠺࠿࡟౫Ꮡࡋ࡚࠸ࡿ࡜ࡍࡿ࡜ࠊ㕲࠾ࡼ ᾏὒ࡛ࡢඖ⣲ᚠ⎔࡟࠾ࡅࡿࣂࢡࢸࣜ࢔ࡢᙳ㡪ࡧࢡ࣒ࣟ྾཰⬟ࡢ㐪࠸ࡣࠊࣂࢡࢸࣜ࢔✀ࡢ㐪࠸ࢆࢆㄪ࡭ࡿࡓࡵ࡟ࡣࠊࣂࢡࢸࣜ࢔⩌㞟඲యࡢໟᣓⓗ཯ᫎࡋ࡚࠸ࡿ࡜⪃࠼ࡽࢀࡿࠋ

࡞ศᯒࡀ୙ྍḞ࡛࠶ࡿࠋ≉࡟ࣂࢡࢸࣜ࢔ࡀᾏὒ⎔ ୍᪉ࠊ῝ᗘ࡟ࡼࡾ㕲྾཰⬟ࡀ␗࡞ࡿูࡢせᅉ࡜ቃ୰࡟ᐇ㝿࡟Ꮡᅾࡋ࡚࠸ࡿ᫬ࡢ≧ែࢆ▱ࡿࡓࡵࡋ࡚ࠊ᥇㞟᫬ࡢࣂࢡࢸࣜ࢔Ꮡᅾ㔞ࡢ㐪࠸ࡸ≧ែࡢ࡟ࡣᇵ㣴࡟ࡼࡿ㑅ูࢆ⤒ࡎ࡟ศᯒࡍࡿ᪉ἲࡀᚲ

㐪࠸࡟ࡼࡾࠊྠࡌ✀࡛࠶ࡗ࡚ࡶ㕲ࡢྲྀࡾ㎸ࡳ㔞ࡀせ࡟࡞ࡿࠋࡑࡢࡓࡵ⌧ᅾ TGGE㸦␗࡞ࡗࡓࡇ࡜ࡶ⪃࠼ࡽࢀࡿࠋ㧗ᅽࠊపࠊ㣚㣹≧ẼὋືἲ㸧ࢆ⏝࠸ࡓࢤࣀ࣒ࣉࣟࣇ࢕ࣜࣥࢢἲࢆ㛤ែ࡞࡝࡟ࡉࡽࡉࢀࡓࣂࢡࢸࣜ࢔ࡣቑṪ᫬࡜ࡣ␗Ⓨ୰࡛࠶ࡿࠋࡇࢀ࡟ࡼࡾᾏὒ࡟Ꮡᅾࡍࡿ」ᩘࡢࣂ

࡞ࡿ࠸ࢃࡺࡿఇ╀≧ែࢆྲྀࡿሙྜࡀ࠶ࡿࡇ࡜ࡀ

ࢡࢸࣜ࢔✀ࡢศᕸࢆㄪ࡭ࡿࡇ࡜ࡀ࡛ࡁࡿࠋᮏ◊✲▱ࡽࢀ࡚࠾ࡾࠊࡶࡋࡑࡢࡼ࠺࡞せᅉ࡟ࡼࡿࡶࡢ࡛

࡟ࡼࡿᇵ㣴ᐇ㦂ࡢ⤖ᯝ࡟ຍ࠼࡚ࠊࣂࢡࢸࣜ࢔✀࡟࠶ࢀࡤࠊᮏ◊✲ࡢ⤖ᯝࡣᾏὒ୰࡛ࡢࣂࢡࢸࣜ࢔ࡢ

㛵ࡍࡿ᝟ሗࡀᚓࡽࢀࢀࡤࠊᾏὒ࡟࠾࠸࡚㕲࠾ࡼࡧ≧ែࢆ᥎ࢡ࣒ࣟࡢᚠ⎔ࢆᢸ࠺ࣂࢡࢸࣜ࢔࡟ࡘ࠸࡚ࡢヲࡋࡍࡿᡭ᥃࠿ࡾ࡟࡞ࡿ࡜ᮇᚅࡉࢀࡿࠋ

ᐃࡋࡓࠋᾏᗏἾ࠿ࡽࡢᇵ㣴ᗘ໙㓄ࢤࣝ㟁࠸▱ぢࡀᚓࡽࢀࡿ࡛࠶ࢁ࠺ࠋࡲࡓࠊ௒ᅇࢡ࣒ࣟࢆ
D-3. ࢡ࣒ࣟ⃰㞟ࣂࢡࢸࣜ࢔

⃰㞟ࡍࡿࡇ࡜ࡀ☜ㄆࡉࢀࡓࣟࢮ࢜ࣂࢡࢱ࣮࡟ࡘ ᾏᗏἾ࠿ࡽࡢᇵ㣴࡟ࡼࡾࢡ࣒ࣟࢆ≉␗ⓗ࡟⃰࠸࡚ࡣࠊࢡ࣒ࣟࢆ࡝ࡢࡼ࠺࡟฼⏝ࡋ࡚࠸ࡿ࠿ゎ᫂㞟ࡍࡿࣂࢡࢸࣜ࢔ࢆⓎぢࡋࠊRoseobacter㸦ࣟࢮࡍࡿࡓࡵ࡟ࠊᏳᐃࡋ࡚ᇵ㣴࡛ࡁࡿ᮲௳ࢆ᥈ࡋᇵᆅ

࢜ࣂࢡࢱ࣮㸧࡜ྠᐃࡋࡓࠋࣟࢮ࢜ࣂࢡࢱ࣮ࡣࠊᾏ

࡟ࢡ࣒ࣟࡸ௚ࡢ㔜㔠ᒓࢆῧຍࡋ࡚ࡑࡢྲྀࡾ㎸ࡳᗏ࠶ࡿ࠸ࡣᾏỈ୰࡟ᾋ㐟ࡋ࡚⏕ᜥࡍࡿࣂࢡࢸࣜ

࡟ࡘ࠸࡚ㄪ࡭ࡿணᐃ࡛࠶ࡿࠋ

࢔࡛ࠊࣂࢡࢸࣜ࢜ࢡࣟࣟࣇ࢕ࣝࢆ⏝࠸࡚ගྜᡂࢆ⾜࠺⣚Ⰽ⣽⳦ࡢ୍✀࡛࠶ࡿࠋගྜᡂ࡟࠾࠸࡚㓟⣲F. ᡂᯝࡢබ⾲

ࢆⓎ⏕ࡏࡎࠊ࢝ࣟࢸࣀ࢖ࢻࡢ⵳✚࡟ࡼࡾ㉥Ⰽ࠶ࡿ ᮾிឿᜨ఍་⛉኱Ꮫ ᩍ⫱࣭◊✲ᖺሗ ➨ 28 ྕ࠸ࡣ〓Ⰽࢆ࿊ࡍࡿࠋࡇࡢ✀ࡢࣂࢡࢸࣜ࢔ࡀࢡ࣒ࣟ

㸦 2008 ᖺ∧㸧ࠕ࢔࢖ࢯࢺ࣮ࣉᐇ㦂◊✲᪋タࠖࢆ⃰㞟ࡍࡿ࡜࠸࠺஦ᐇࡣࠊ2006 ᖺ࡟ึࡵ࡚ሗ࿌

p.274-5ࠊᮾிឿᜨ఍་⛉኱Ꮫࠊ2010.

JRR-3ࠊPN-1, PN-3ࠊᨺᑕ໬ศᯒ㸦⎔ቃ࣭⏕≀ヨᩱ㸧- 251 -

4-4
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JAEA-Review 2013-040

4-5㺀㎰⏘≀࠾ࡼࡧᅵተヨᩱࡢඖ⣲ศᯒ㺁
'HWHUPLQDWLRQRIHOHPHQWVRIDJULFXOWXUDOFURSDQGVRLO
ᮾி኱Ꮫ኱Ꮫ㝔㎰Ꮫ⏕࿨⛉Ꮫ◊✲⛉ᛂ⏝⏕࿨໬Ꮫᑓᨷ ୰す཭Ꮚ࣭◊✲ࡢ┠ⓗ࡜ព⩏ࡣ୰ᅜ⏘ࢆ⏝࠸ࡓࠋࢧࢺ࢖ࣔࡣࠊὙίࡋ⓶ࢆࡴ࠸ࡓ㸺ᴫせ㸼ྍ㣗㒊ࢆ࣍ࣔࢪ࢙ࢼ࢖ࢬࡋࠊࣇ࣮ࣜࢬࢻࣛ࢖࡛⬺Ỉ᳜≀࠾ࡼࡧᅵተヨᩱ୰ࡢඖ⣲⃰ᗘࢆ㠀◚ቯ≧ែ࡛ࡋࠊ⢊ᮎ໬ࡋࡓࠋ

ᐃ㔞ࡍࡿ᪉ἲ࡜ࡋ࡚ࠊᨺᑕ໬ศᯒࡣከඖ⣲ྠ᫬ศᯒ࡛ࡁࡿ฼Ⅼࡀ࠶ࡿࠋᮏ◊✲࡛ࡣࠊඖ⣲࡟ࡼࡿ㎰⏘≀㸺ᨺᑕ໬ศᯒ㸼∵⫗ࡣ࣮࣌ࢫࢺ≧ࡢࢧࣥࣉࣝࢆࠊࢧࢺ࢖ࣔࡣ⢊ᮎࡢ⏘ᆅุูᢏ⾡࡟ᨺᑕ໬ศᯒࢆ⏝࠸ࡓࠋ⣙ J ࢆ㘄๣ᡂᆺᶵ࡛㘄๣໬ࡋࡓᚋࠊ㧗⣧ᗘ࣏ࣜ ㏆ᖺࠊ」ᩘࡢඖ⣲⃰ᗘࣃࢱ࣮ࣥࡸྠ఩యẚ࡞࡝ࢆ࢚ࢳࣞࣥ⿄࡛஧㔜࡟ᑒධࡋࠊ㧗⣧ᗘ࣏࢚ࣜࢳࣞࣥࡢ

㥑౑ࡋࠊ⤫ィฎ⌮ࢆࡍࡿࡇ࡜࡟ࡼࡾ⏘ᆅࢆ≉ᐃࡍࡿ࢟ࣕࣉࢭࣝ࡟ᑒධࡋࡓࠋヨᩱࡢ↷ᑕࡣࠊ ⊂ ᪥ᮏཎᢏ⾡㛤Ⓨࡀヨࡳࡽࢀࠊ୍㒊ࡢ㎰⏘≀࡟ࡘ࠸࡚ࡣุู

Ꮚຊ◊✲㛤Ⓨᶵᵓ࣭ᮾᾏ◊✲㛤Ⓨࢭࣥࢱ࣮࣭ཎᏊຊ

ࡀྍ⬟࡟࡞ࡗ࡚ࡁ࡚࠸ࡿࠋࡇࡢඖ⣲ࣃࢱ࣮ࣥ࡟ࡼࡿ

⛉Ꮫ◊✲ᡤෆ◊✲⅔ࠊ-55 ࡛⾜ࡗࡓࠋ∵⫗࡟ࡘ࠸ุู࡚ࢩࢫࢸ࣒࡛ࡣࠊ㏻ᖖ ,&3$(6 ࡶࡋࡃࡣ ,&306ࡣ▷༙ῶᮇ᰾✀ࡢࡳࢆࠊࢧࢺ࢖ࣔ࡟ࡘ࠸࡚ࡣ▷༙ῶࡀ฼⏝ࡉࢀࡿࡀࠊᑐ㇟࡜ࡍࡿඖ⣲ࡢ⠊ᅖࢆᣑ኱࡛ࡁ

ᮇ࡜㛗༙ῶᮇ᰾✀ࢆ ᐃࡋࡓࠋ▷༙ῶᮇ᰾✀࡟ࡘ࠸ࢀࡤࠊ⏘ᆅ≉ᐃࡢ⢭ᗘࡢྥୖࡀᮇᚅ࡛ࡁࡿࠋࡑࡇ࡛ࠊ

࡚ࡣࠊ ⛊㛫୰ᛶᏊࢆ↷ᑕᚋࠊ ศ㛫෭༷᫬㛫ࢆ࠾ᮏ◊✲࡛ࡣࠊḟࡢ฼Ⅼࢆᣢࡘᨺᑕ໬ศᯒἲࢆᑟධࡋ

࠸ࡓᚋࠊࢤ࣐ࣝࢽ࣒࢘࢝࢘ࣥࢱ࣮࡛  ศ㛫ᨺᑕ໬ࡋࡓ㸹 ,&306 ➼ࡢ๓ฎ⌮࡛࠶ࡿ⁐ᾮ໬ࡀᚲせ࡞࠸ࡇࡓࢧࣥࣉࣝ࠿ࡽࡢ࣐࣮࢞ࣥ⥺ࢆ࡜࠿ࡽࠊᴟᚤ㔞ඖ⣲ࡢΰධࡀ᭱ᑠ㝈࡟ᢚ࠼ࡽࢀࡿࠋ

᰾✀࡟ࡘ࠸࡚ࡣࠊ ศ㛫୰ᛶᏊࢆ↷ᑕᚋࠊ⣙  㐌㛫 㧗ឤᗘ࡟ᐃ㔞࡛ࡁࡿඖ⣲ࡀከࡃ࠶ࡿࠋ ከඖ⣲ྠ෭༷ᮇ㛫ࢆ࠾࠸ࡓᚋࠊࢤ࣐ࣝࢽ࣒࢘࢝࢘ࣥࢱ࣮࡛

᫬ศᯒࢆ⾜࠺ࡇ࡜ࡀ࡛ࡁࡿࠋࡇࢀࡽࡢ฼Ⅼࢆ᭱኱㝈 ⛊࣐࣮࢞ࣥ⥺ࢆ ᐃࡋࠊࡉࡽ࡟↷ᑕᚋ  㐌㛫ά࠿ࡋࠊࢧࣥࣉࣝ୰ࡢඖ⣲᳨ฟࢆヨࡳࠊࡑࡢࢹ࣮ࢱ

௨ୖࡢ෭༷ᮇ㛫ࢆ࠾࠸ࡓᚋࠊྠࡌࡃࢤ࣐ࣝࢽ࣒࢘࢝

࠿ࡽ⏘ᆅ≉ᐃἲࡢ㛤Ⓨࢆヨࡳࡓࠋ࢘ࣥࢱ࣮࡛  ⛊࣐࣮࢞ࣥ⥺ࢆ ᐃࡋࡓࠋᚓࡽࢀ

ᐃࡋࡓࠋ㛗༙ῶᮇ

ࡓ࣐࣮࢞ࣥ⥺ࢫ࣌ࢡࢺࣝ࠿ࡽࠊྛ᰾✀࡟ヱᙜࡍࡿ࢞࣐࣮ࣥ⥺࢚ࢿࣝࢠ࣮ࡢࣆ࣮ࢡ㠃✚ࢆ⟬ฟࡋࠊ༙ῶᮇ

࣭ࡑࡢ◊✲ࢆ࡝ࡢࡼ࠺࡟⾜ࡗࡓ࠿⏘ᆅุูࡢᑐ⛠࡜ࡋ࡚ࠊ∵⫗࡜ࢧࢺ࢖ࣔ࡟ࡘ࠸࡚

⿵ṇࢆ⾜ࡗࡓࠋྠᵝ࡟ࡋ࡚ ᐃࡋࡓㄆドᶆ‽≀㉁ࡢ

ᐇ᪋ࡋࡓࠋ

ࢹ࣮ࢱ࠾ࡼࡧ ᐃ್ࢆẚ㍑ࡍࡿࡇ࡜࡟ࡼࡾࠊࢧࢺ࢖

ࣔ୰ඖ⣲⃰ᗘࢆ㸺∵⫗㸼⏘ᆅࡀ᫂☜࡞ࢧࣥࣉࣝࡣࠊᾘ㈝ᢏ⾡ࢭࣥࢱ࣮ࡼࡾ

ᐃࡋࡓࠋ㸺࢖࢜ࣥࢡ࣐ࣟࢺࢢࣛࣇ࢕㸼ධᡭࡋࡓࠋࡲࡓࠊ୍㒊ࡢヨᩱࡣᑠ኎ᗑࡼࡾධᡭࡋࡓࠋ ࢧࢺ࢖ࣔ࡟ࡘ࠸࡚ࡣࠊࡉࡽ࡟ከࡃࡢ↓ᶵඖ⣲ࢆ࣑࢟ࢧ࣮࡛ᆒ୍໬ࡋࡓᚋࠊࣇ࣮ࣜࢬࢻࣛ࢖ࡋࡓࢧࣥ

ᐃࡍࡿࡓࡵ࡟ࠊ࢖࢜ࣥࢡ࣐ࣟࢺࢢࣛࣇ࢕ࢆᐇ᪋ࡋࡓࠋ

ࣉࣝࢆᨺᑕ໬ศᯒ࡟౪ࡋࡓࠋ

⢊ᮎࢧࣥࣉࣝ PJ ࢆ PO ࡢ WZHHQ Ỉ⁐ᾮ࡛⇕‫‮‬ᢳฟࢆ⾜ࡗࡓࠋ㐲ᚰ࠾ࡼࡧࣇ࢕ࣝࢱ࣮ࢆ㏻ࡋ࡚ᚓࡽࢀࡓୖΎࢆ࢖࢜ࣥࢡ࣐ࣟࢺࢢࣛࣇ࢕࡛ ᐃࡋࡓࠋ

㸺ࢧࢺ࢖ࣔ㸼⏘ᆅࡀ᫂☜࡛࠶ࡿࢧࢺ࢖ࣔࡣࠊ୺࡟㎰ᯘỈ⏘ᾘ㈝Ᏻ඲ᢏ⾡ࢭࣥࢱ࣮ࡀ཰㞟ࡋࡓࡶࡢࡢศㆡࢆཷࡅࡓࠋ

࣭࡝ࡢࡼ࠺࡞ᡂᯝࢆᚓࡓ࠿

㍺ධࡢ኱༙ࡣ୰ᅜ⏘࡛࠶ࡿࡇ࡜࠿ࡽࠊᾏእ⏘࡜ࡋ࡚㸺∵⫗㸼

JRR3ࠊ୰ᛶᏊ฼⏝ඖ⣲ศᯒࠊࣛ࢖ࣇࢧ࢖࢚ࣥࢫ࡬ࡢᛂ⏝- 252 -

㻝㻜㻜

JAEA-Review 2013-040

 ศᯒࡋࡓࢧࣥࣉࣝࡣࠊ࣮࢜ࢫࢺࣛࣜ࢔⏘㸦࣍ࣝࢫ

7DEOH ᨺᑕ໬ศᯒ࡟ࡼࡾᐃ㔞ࡋࡓඖ⣲⃰ᗘ୍ぴࢱ࢖ࣥ㸧ࠊ࢔࣓ࣜ࢝⏘∵⫗ࠊᅜ⏘࣍ࣝࢫࢱ࢖ࣥ࠾ࡼࡧ
㯮ẟ࿴∵ࡢ  ✀㢮࡛࠶ࡗࡓࠋࡲࡓࠊ㒊఩࡟ࡘ࠸࡚ࡣ ࡘࡢ㒊఩ࡀΰᅾࡋ࡚࠸ࡓࠋ7DEOH ࡟཰㞟ࢧࣥࣉࣝࢆ♧ࡋࡓࠋ

7DEOH ᨺᑕ໬ศᯒἲ࡟ࡼࡾᐃ㔞࡛ࡁࡓඖ⣲࡟ࡘ࠸࡚ࠊ୺
ᡂศศᯒ㸦3ULQFLSDOFRPSRQHQWDQDO\VLV3&$㸧ࢆ⾜ࡗࡓࠋࡑࡢ⤖ᯝࢆ )LJ ࡟⾲ࡋࡓࠋ
)LJXUH ∵⫗ࢧࣥࣉࣝ୰ඖ⣲⃰ᗘ࡟ࡼࡿ⏘ᆅࡢ୺ᡂศゎᯒࠋ‫⏘࢔ࣜࣛࢺࢫ࣮࢜ڸ‬㸦࣍ࣝࢫࢱ࢖ࣥ㸧ࠊ‫ۻ‬࢔࣓ࣜ࢝⏘ࠊ‫ڦ‬ᅜ⏘㸦࣍ࣝࢫࢱ࢖ࣥ㸧ࠊ‫ە‬ᅜ⏘㯮ẟࠋ
0RGHOLQJSRZHU ࡣࠊࡇࡢࣔࢹࣜࣥࢢ࡬ࡢᐤ୚ᗘࢆ♧
ࡍࠋ






▷ᮇᨺᑕ໬ศᯒࡢ⤖ᯝࠊ7DEOH ࡟♧ࡍࡼ࠺࡞」ᩘ

 ୺ᡂศゎᯒ㸦3&$㸧ࡢ⤖ᯝࠊᅜ⏘㯮ẟ࡜࢔࣓ࣜ࢝⏘ࡢඖ⣲⃰ᗘࢆᚓࡿࡇ࡜ࡀ࡛ࡁࡓࠋ

ࡣ᫂☜࡟ศ࠿ࢀࡓࡀࠊᅜ⏘࣍ࣝࢫࢱ࢖ࣥ࠾ࡼࡧ࣮࢜

ࢫࢺࣛࣜ࢔⏘࣍ࣝࢫࢱ࢖ࣥࡣศ࠿ࢀ࡞࠿ࡗࡓࠋࡲࡓࠊ

0RGHOLQJ3RZHU ࡢ 6P ࡜ %U ࡀ≉࡟኱ࡁ࠸ࡇ࡜࠿ࡽࠊ

ࡇࡢࣔࢹࣜࣥࢢ࡬ࡢᐤ୚ࡣ 6Pࠊ%U ࡀ኱ࡁࡃࠊ⏘ᆅุ

JRR3ࠊ୰ᛶᏊ฼⏝ඖ⣲ศᯒࠊࣛ࢖ࣇࢧ࢖࢚ࣥࢫ࡬ࡢᛂ⏝- 253 -

4-5
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JAEA-Review 2013-040ู࡟᭷⏝࡞ඖ⣲࡛࠶ࡿࡇ࡜ࡀ♧၀ࡉࢀࡓࠋࡇࡢ 3&$ゎᯒ࡛ࡣ⫗ࡢ㒊఩࡟㛵ࢃࡽࡎ඲࡚ࡢࢧࣥࣉࣝࢆᑐ㇟
࡜ࡋࠊ⏘ᆅู࡛ࣔࢹࣜࣥࢢࢆ⾜ࡗࡓࡀࠊḟ࡟ࠊ㒊఩
ู࡟ 3&$ ゎᯒࢆ⾜ࡗࡓࠋࡑࡢ⤖ᯝࢆ )LJ ࡟♧ࡍࠋ)LJXUHᨺᑕ໬ศᯒἲ࡛ᐃ㔞ࡋࡓ &R ࡜ &U ࡢ⃰ᗘูᗘᩘศᕸ
 ୍᪉ࠊ࢖࢜ࣥࢡ࣐ࣟࢺࢢࣛࣇ࢕࡛ ᐃ࡛ࡁࡓ࢖࢜
ࣥࡣࠊ&O1262+32PDODWHR[DODWH ࡛࠶ࡗࡓࠋ
᭷ᶵ㓟ࡶࣆ࣮ࢡࢆ☜ㄆ࡛ࡁࡓࡢ࡛ࠊᐃ㔞ࢆࡋࡓࠋᖹ
ᆒ್ࡢ W ᳨ᐃࡢ⤖ᯝࠊ㸸2[DODWHࠊ㸸+32࡛࠶ࡗࡓࠋᗘᩘศᕸࢆㄪ࡭ࡓ࡜ࡇࢁࠊ+32ࡀ᭷ຠ࡛࠶ࡿ
࡜⪃࠼ࡽࢀࡓࠋ)LJXUH ∵⫗ࢧࣥࣉࣝ୰ඖ⣲⃰ᗘ࡟ࡼࡿ㒊఩ูࡢ୺ᡂศゎᯒࠋ‫ڸ‬URXQGࠊ‫ۻ‬FKXFNࠊ‫ڦ‬VLUORLQࠊ‫ۑ‬ILOOHWࠊ‫ە‬୙᫂)LJXUH࢖࢜ࣥࢡ࣐ࣟࢺࢢࣛࣇ࢕ἲ࡛ᐃ㔞ࡋࡓ
)LJ ࡟♧ࡉࢀࡿࡼ࠺࡟ࠊ࡝ࡢ㒊఩࡟㛵ࡋ࡚ࡶศ㞳ࡋ࡞࠿ࡗࡓࡓࡵࠊ௒ᅇᚓࡽࢀࡓඖ⣲⃰ᗘ࡛ࡣࠊ㒊+32ࡢ⃰ᗘูᗘᩘศᕸ
఩ࡢุูࡣᅔ㞴࡛࠶ࡗࡓࠋ

᭷ຠ࡛࠶ࡿ࡜ண᝿ࡉࢀࡓኚᩘ࡜ࡋ࡚ࠊ&Rࠊ&U ࠾ࡼ ௒ᅇࡢᡭἲ࡛ࡣࠊᅜ⏘㯮ẟ࡜࢔࣓ࣜ࢝⏘ࡢุูࡀ༢⣧ࣉࣟࢵࢺࡋࡓ࡜ࡇࢁࠊ
ࡧ +32ࡢ⃰ᗘࢆ㑅ᢥࡋࠊ࡛ࡁࡿྍ⬟ᛶࡀ♧၀ࡉࢀࡓࠋࡉࡽ࡟ࠊ⏝࠸ࡿ⫗ࡢ㒊≉࡟ &R ࡜ +32࡛ᅜ⏘࠾ࡼࡧᾏእ⏘ࡢศᕸࡀศ࠿ࢀ

఩ࡣ≉࡟⪃៖ࡋ࡞ࡃ࡚ࡶࠊ⏘ᆅࡢุู࡟ᙳ㡪ࡋ࡞࠸ࡿഴྥࡀぢࡽࢀࡓ㸦)LJ㸧ࠋࡉࡽ࡟ࡇࢀࡽ  ኚᩘࢆࡇ࡜ࡶ♧ࡉࢀࡓࠋ

ᇶ࡟ከኚ㔞ゎᯒࢆ⾜ࡗࡓ࡜ࡇࢁࠊ᫂☜࡟⏘ᆅࡀศ࠿ࢀࡓ㸦)LJ㸧ࠋヨࡳ࡜ࡋ࡚ࠊ᭷ពỈ‽ ࡛࠶ࡿ &D㸺ࢧࢺ࢖ࣔ㸼࡜ 0J ࡢ⃰ᗘࢹ࣮ࢱࡶ᥇⏝ࡋ࡚  ኚᩘ࡟ࡼࡿከኚ㔞ゎᨺᑕ໬ศᯒ࡟ࡼࡾࠊ▷༙ῶᮇ᰾✀㸸$O0J&D&O0Qࠊ

ᯒࢆᐇ᪋ࡋࡓ࡜ࡇࢁࠊࢢ࣮ࣝࣆࣥࢢࡀᣑᩓࡋ࡚ࡋࡲ

㛗༙ῶᮇ᰾✀㸸.1D%U&R&U&V=Q)H5E6F ࡀ

࠺ഴྥࡀぢࡽࢀࡓ㸦)LJ㸧ࠋࡇࢀࡽࡢࡇ࡜࠿ࡽࠊᮏ

ᐃ࡛ࡁࡓࠋᅜ⏘࠾ࡼࡧእᅜ⏘ࡢᖹᆒ⃰ᗘ࡟ࡘ࠸࡚ W◊✲࡛ᚓࡽࢀࡓ⃰ᗘࢹ࣮ࢱ࡛ࡣࠊ&Rࠊ&U ࠾ࡼࡧ +32᳨ᐃࢆ⾜ࡗࡓ࡜ࡇࢁࠊ᭷ពỈ‽ ࡢඖ⣲ࡣ %U6F=Qࢆ᥇⏝ࡍࡿࡇ࡜ࡀ᭱ࡶࡼ࠸ࢢ࣮ࣝࣆࣥࢢࢆ♧ࡍ࡜⪃࡛ࠊࡢඖ⣲ࡣ &D0J1D&R&U ࡛࠶ࡗࡓࠋࡑࡢ࠺ࡕࠊ

࠼ࡽࢀࡓࠋࡼࡗ࡚ࠊᮏ◊✲࡟ࡼࡾࠊุู࡟᭷⏝࡞ᡂᗘᩘศᕸࢆ᳨ウࡋ࡚᭷ຠ࡛࠶ࡿ࡜ண᝿࡛ࡁࡓඖ⣲ࡣࠊศ࡜ࡋ࡚ࠊᚤ㔞ඖ⣲ࡣ &R ࡜ &U ࡀࠊỈ⁐ᛶ࢖࢜ࣥ࡜

&R ࠾ࡼࡧ &U ࡛࠶ࡗࡓ㸦)LJ㸧ࠋࡇࢀࡽࡢඖ⣲㔞ࡣࡋ࡚ࡣ +32ࢆぢ࠸ࡔࡍࡇ࡜ࡀ࡛ࡁࡓࠋ

ᴟࡵ࡚ᚤ㔞࡛࠶ࡗࡓࡀࠊᨺᑕ໬ศᯒ࡛ࡣᐃ㔞ࡍࡿࡇ࡜ࡀ࡛ࡁࡓࠋ



JRR3ࠊ୰ᛶᏊ฼⏝ඖ⣲ศᯒࠊࣛ࢖ࣇࢧ࢖࢚ࣥࢫ࡬ࡢᛂ⏝- 254 -

4-5
㻝㻜㻞

JAEA-Review 2013-040࣭ᡂᯝࡢබ⾲㸺Ꮫ⾡ㄽᩥ㸼
6DLWR77DQRL.0DWVXH+,LNXUD++DPDGD<6H\DPD60DVXGD6DQG1DNDQLVKL70 ᖺ
͆$SSOLFDWLRQRISURPSWJDPPDUD\DQDO\VLVDQG
LQVWUXPHQWDOQHXWURQDFWLYDWLRQDQDO\VLVWR LGHQWLI\WKHEHHISURGXFWLRQGLVWLQFW͇-RXUQDO)LJXUH &Rࠊ&Uࠊ+32ࡢ⃰ᗘ࡟ࡼࡿࣈࣟࢵࢺ

RI5DGLRDQDO\WLFDODQG1XFOHDU&KHPLVWU\  
㸺Ꮫ఍Ⓨ⾲㸼
6DLWR77DQRL.0DWVXH+,LNXUD++DPDGD<6H\DPD60DVXGD6DQG1DNDQLVKL70
WK,QWHUQDWLRQDO&RQIHUHQFH0RGHUQ7UHQGVLQ$FWLYDWLRQ$QDO\VLV07$$ ᖺ  ᭶  ᪥̿ ᪥
͆$SSOLFDWLRQRISURPSWJDPPDUD\DQDO\VLVDQG
LQVWUXPHQWDOQHXWURQDFWLYDWLRQDQDO\VLVWR
LGHQWLI\WKHEHHI̓VSURYHQDQFH͇)LJXUH&Rࠊ&Uࠊ+32 ࡟ࡼࡿ 3&$ ゎᯒ


4-5





 
)LJXUH&Rࠊ&Uࠊ+32ࠊ&Dࠊ0J ࡟ࡼࡿ 3&$ ゎᯒ࣭⥅⥆ࡍࡿሙྜࡣࠊ௒ᚋࡢ᪉㔪 ࢧࢺ࢖ࣔ࡟ࡘ࠸࡚ࡣࠊຍᕤရࡢ㍺ධࡶከ࠸ࡇ࡜࠿
ࡽࠊຍᕤရ࡟㛵ࡋ࡚ࡶࠊඖ⣲ศᯒ࡟ࡼࡿุูࡢྍ⬟ᛶࡀ࠶ࡿ࠿࡝࠺࠿࡟ࡘ࠸࡚ࠊ௒ᚋᐇ㦂ࢆᐇ᪋ࡋࡓ࠸
࡜⪃࠼࡚࠸ࡿࠋ

JRR3ࠊ୰ᛶᏊ฼⏝ඖ⣲ศᯒࠊࣛ࢖ࣇࢧ࢖࢚ࣥࢫ࡬ࡢᛂ⏝- 255 -

㻝㻜㻟

JAEA-Review 2013-040

4-6
ẟ㧥ヨᩱࡢᨺᑕ໬ศᯒ ,1$$DQDO\VLVRIKDLUVDPSOHV㇏⏣࿴ᘯ࣭ᕝᮧⱥு࣭$VWHU5DKD\X㸦໭ᾏ㐨኱Ꮫ࣭኱Ꮫ㝔⎔ቃ⛉Ꮫ㝔㸧.D]XKLUR7R\RGD+LGHDNL.DZDPXUD$VWHU5DKD\X*UDGXDWHVFKRRORI(QYLURQPHQWDO6FLHQFH+RNNDLGR8QLY໭ᾏ㐨኱Ꮫ࡟㏦ࡗ࡚ࡶࡽ࠸࠺ࡼ࠺࡟ᡭ㓄ࢆࡋ࡚ࠊ㸯◊✲┠ⓗ࡜ព⩏ࠊ࠸ࡁࡉࡘ
⎔ቃ࡜ࡢ㛵㐃࡟ࡘ࠸࡚ㄪᰝࡍࡿィ⏬ࢆ❧࡚ࡓࠋ ᖹᡂ㸯㸷ᖺᗘ㸦ึᖺᗘ㸧᪋タ฼⏝⏦ㄳ᫬ࡣࠊࠕẟ ࡲࡓࠊ7DNHXFKLHWDO  ࡢࢹ࣮ࢱ࡟ࡼࢀ
㧥୰ࡢ࣑ࢿࣛࣝ㸦㔠ᒓඖ⣲㸧ࡢ⃰ᗘࡢኚື࡟ࡼࡾࠊ
ࡤࠊ࢔ࣥࢳࣔࣥࡢᐃ㔞್࡟኱ࡁ࡞ࣂࣛࢶ࢟ࡀ࠶ࡿ
࢞ࣥࡢண඙᳨▱ࠊ㧗⾑ᅽ⑕ࠊ⫢ᶵ⬟࡞࡝ࡢデ᩿ࡀࡼ࠺࡟グ㍕ࡉࢀ࡚࠾ࡾࠊᖺ㱋ࡸᛶู࡛ࡢẟ㧥୰ࡢ་Ꮫⓗ᰿ᣐ࡟ᇶ࡙࠸࡚࡛ࡁࡿࡇ࡜ࡀุ᫂ࡋࡘࡘ
࢔ࣥࢳࣔࣥྵ᭷㔞࡟ࡘ࠸࡚ࡢ⪃ᐹࡶࡉࢀ࡚࠸࡞
࠶ࡾࠊẟ㧥୰ࡢᚤ㔞ඖ⣲ࡀὀ┠ࡉࢀ࡚࠸ࡿࠋẟ㧥࠸ࠋ࢔ࣥࢳࣔࣥࡣ࿘ᮇ⾲࡛ࡣࣄ⣲ࡢ┿ୗ࡟఩⨨ࡍ࡞࡝ࡢ⏕యヨᩱ୰ࡢ᭷ᐖ㔠ᒓࡸ᭷┈࡞࣑ࢿࣛࣝ
ࡿඖ⣲࡛ࠊࣄ⣲࡜ྠᵝ࡟ேయ࡟᭷ᐖ࡞ඖ⣲࡛࠶ࡾࠊᡂศࡢ⃰ᗘศᕸ࡟ࡘ࠸࡚ㄪ࡭ࡓ࠸ࠖ࡜⪃࠼ࠊࠕ⏦ேయ NJ ࠶ࡓࡾ࡬ࡢ⪏ᐜ୍᪥ᦤྲྀ㔞ࡣࣄ⣲ࡢ㸱ಸㄳ⪅ࡢᡤᒓࡍࡿᏛ㝔ࡣ⎔ቃၥ㢟ࢆྲྀࡾᢅ࠺◊✲ࡢ㸴wJNJGD\ ࡛࠶ࡿࠋᆅẆෆᏑᅾ㔞ࡣࣄ⣲ࡢ㸳ᩍ⫱ᶵ㛵࡛࠶ࡾࠊ኱Ꮫ㝔኱Ꮫ࡛Ꮫ㒊ࡀ࡞࠸ࡢ࡛ண
ศࡢ㸯࡛࠶ࡿࡀࠊ㏆ᖺ⎔ቃ୰࡬ࡢேⅭⓗ࡞᤼ฟ㔞࡛ࡁ࡞࠸ࡀࠊࡇࡢࡼ࠺࡞⏕యෆ࡛ࡢ᭷ᐖ㔜㔠ᒓࡀᛴቑࡋ࡚࠾ࡾࠊ7DNHXFKLHWDO  ࡛ࡢẟࡢᣲື࡟⯆࿡ࡢ࠶ࡿಟኈㄢ⛬㸯ᖺࡢ㝔⏕ࡀ㸵᭶㧥ヨᩱ୰ࡢ࢔ࣥࢳࣔࣥྵ᭷㔞ࡢ኱ࡁ࡞ኚືࡣࠊ⎔࡟㓄ᒓ࡟࡞ࡗࡓሙྜ࡟ഛ࠼࡚࠶ࡽ࠿ࡌࡵ⏦ㄳࢆቃ୰࠿ࡽࡢ⿕⇿ᒚṔࡢ┦㐪࡟ࡼࡿࡶࡢ࡛ࡣ࡞࠸
ࡋࡓࠖࢃࡅࡔࡀࠊṧᛕ࡞ࡀࡽࠊึᖺᗘ࡟ࡣ㝔⏕ࡢ࠿࡜సᴗ௬ㄝࢆ᝿ᐃࡋ࡚ࠊேⅭⓗ࡞᤼ฟ≀୰ࡢ࢔㐍Ꮫࡀ࡞ࡃࠊẟ㧥ヨᩱࡢᐃ㔞࡟ࡘ࠸࡚ணഛⓗ࡞ࣥࢳࣔࣥྵ᭷㔞࡟⯆࿡ࢆࡶࡗࡓࠋ
ᐃࢆ⾜࡞ࡗࡓࡔࡅ࡛࠶ࡾࠊḟᖺᗘࡢ᫓࡟ࡣࠊ㝔⏕ ࢔ࣥࢳࣔࣥࡢᕤᴗⓗ࡞⏝㏵࡜ࡋ࡚ࡣྛ✀ࣉࣛ㸴ྡࡢᏛ⏕ᐇ⩦࡜ࡋ࡚ࠊ⮬ศࡢẟ㧥ࡢᚤ㔞ඖ⣲ࢫࢳࢵࢡࡸࢦ࣒⧄⥔࡞࡝ࡢ⪏㜵ⅆᏳ඲ᛶᙉ໬ࡢ
ᐃࢆ࠾ࡇ࡞ࡗࡓࠋ  ࡕ࡞ࡳ࡟ࠊᮏ⏦ㄳ࡟ࡓ࠸ࡍࡿᑂᰝጤဨ఍࠿ࡽࡣࠊ ࡓࡵࡢ㞴⇞ຓ๣ࡸࠊ3(7 ࣎ࢺࣝᶞ⬡ࡢ࣏࢚ࣜࢳࣞ
ࣥࢸࣞࣇࢱ࣮ࣞࢺࡢ㔜ྜ๣࡜ࡋ࡚౑⏝ࡉࢀ࡚࠸ࠕẟ㧥ヨᩱ୰ࡢᚤ㔞ඖ⣲ࡢᨺᑕ໬ศᯒࡢ◊✲ࡣ࠿ࡿࠋࡲࡓࠊᮾிࡢ኱Ẽ୰ࡢ⢊ሻ࡟࢔ࣥࢳࣔࣥࡀ⃰࡞ࡾ᫇࡟⣔⤫ⓗ࡟⾜࡞ࢃࢀ࡚࠸ࡿࡢ࡛ࠊ௒ࡉࡽ◊⦰ࡋ࡚࠸ࡿࡢࡣࠊࣈ࣮ࣞ࢟⣲ᮦࡢ◳ᗘࢆ㧗ࡵࡿ࢔✲ࡍࡿࢸ࣮࣐࡛ࡣ࡞࠸ࡢ࡛ࡣ࡞࠸࠿ࠖࠊ࡜࠸࠺ࢥ
ࣥࢳࣔࣥྜ㔠ࡢᚤ⢏Ꮚࡢΰධࡀ୺࡞ཎᅉ࡜࠸࠺
࣓ࣥࢺࡶ࠶ࡗࡓࠋ☜࠿࡟ ᖺ௦࡟ࡍ࡛࡟⣔⤫◊✲㸦)XUXWDHWDO㸧ࡶ࠶ࡿࠋ࡜࠸࠺ࡇ࡜
ⓗ࡟ᨺᑕ໬ศᯒ࡟ࡼࡿ᪥ᮏேࡢẟ㧥୰ࡢከࡃࡢ
࡛ࠊ㸱ᖺ┠ࡢ⏦ㄳ᭩࡛ࡣࠊ3(7 ࣎ࢺࣝᶞ⬡ࡸࡑࡢᚤ㔞ඖ⣲ࡢᐃ㔞ࡋࡓ◊✲ࡀሗ࿌ࡉࢀ࡚࠸ࡿࠋ᫛࿴
↝༷⅊ෆࡢ࢔ࣥࢳࣔࣥྵ᭷㔞࡟ࡘ࠸࡚ศᯒࡍࡿ
㸦㸧ᖺ࡟ᅜ㝿ཎᏊຊᶵ㛵㸦,$($㸧ࡣࠊ⎔ቃࡼ࠺࡟⏦ㄳࡋࡓࠋ
ởᰁ≀㉁࡟ࡼࡿேయࡢởᰁࢆㄪ࡭ࡿࡓࡵྛᅜ࡛
 ◊✲⅔ࡢ✌ാࡀィ⏬እ೵Ṇࡢᮇ㛫ᘏ㛗ࡢ✚ࡳࡢᇶ‽࡜࡞ࡿẟ㧥୰ࡢᚤ㔞ඖ⣲⃰ᗘࢆㄪᰝࡍࡿ
㔜ࡡ࡟ࡘࡁࠊ ᖺ┠ࡶ࢖ࣥࢻࢿࢩ࢔ேࡢẟ㧥ࡢᨺ஦ࢆ່࿌ࡋࡓ㝿࡟ࠊி኱ཎᏊ⅔ᐇ㦂ᡤ࡟࡚ࠊ᪥ᮏ
ྛᆅ࠿ࡽ㞟ࡵࡽࢀࡓ  ᳨యࡢศᯒࡀ⾜࡞ࢃࢀ࡚ࠊ ᑕ໬ศᯒࡣ࠶ࡁࡽࡵࡊࡿࢆ࠼࡞࠿ࡗࡓࡀࠊ᪥ᮏ࡜
࢖ࣥࢻࢿࢩ࢔࡛㈍኎ࡉࢀ࡚࠸ࡿ࣌ࢵࢺ࣎ࢺࣝࠊ࠾
ヲࡋࡃゎᯒࡉࢀ࡚࠸ࡿࠋࡲࡓࠊ᭷ᶵỈ㖟࡜ẟ㧥ࡢࡼࡧᮐᖠᕷⓑ▼Ύᤲᕤሙࡢ  ᖺ  ᭶࠿ࡽ 㛵ಀ࡟ࡘ࠸࡚ࡶヲࡋࡃሗ࿌ࡉࢀ࡚࠸ࡿࠋࡲࡓࠊ኱ᖺ  ᭶ࡲ࡛࡟↝༷⅔ࡢℐ㐣ᘧ㞟ሻᶵ࡟ᤕ㞟ࡉࢀࡓ᳃ᕥ⯆Ꮚᩍᤵ㸦኱ጔዪᏊ኱㸧࡟ࡼࡾẟ㧥ࡢᨺᑕ໬㣕⅊ヨᩱࡣ㸱ᖺ┠ࡢᖺᗘᮎ࡟ศᯒࢆ⾜࡞࠼ࡓࡢศᯒ࡟㛵ࡍࡿ◊✲⤖ᯝࡸ⥲ㄽࡀࠕᨺᑕ໬ศᯒࠖ
࡛ࠊࡑࡢศᯒ್࡟ࡘ࠸࡚ሗ࿌ࡍࡿࠋࡲࡓࠊ㣕⅊ヨ1R ࡜  ࡟ሗ࿌ࡉࢀ࡚࠸ࡿࠋ
ᩱ୰ࡢ࢔ࣥࢳࣔࣥࡢ࠺ࡕ࡝ࢀࡃࡽ࠸ࡢ๭ྜࡀࣜ ࡑࡇ࡛ࡲࡔ ᐃࡀࡉࢀࡓࡇ࡜ࡀ࡞࠸ヨᩱࢆᑐࢧ࢖ࢡࣝࡉࢀ࡞࠿ࡗࡓ࣌ࢵࢺ࣎ࢺࣝ࠿ࡽ⏕ࡌࡓ㇟࡟㑅ࡪ࡭ࡋ࡜࠸࠺ࡇ࡜࡛ࠊ◊✲ᐊ࡟᮶ࡓ࢖ࣥࢻࡶࡢ࠿ࢆぢ✚ࡶࡿࠋࡇࡢࡼ࠺࡟ࠊࣜࢧ࢖ࢡࣝࡸᗫ
ࢿࢩ࢔ே◊✲␃Ꮫ⏕ࡢ◊✲ࢸ࣮࣐ࢆࠊ࢖ࣥࢻࢿࢩ
Რ≀࡟࠾ࡅࡿᚤ㔞ඖ⣲ࡢᣲືࢆㄪ࡭ࡿ஦ࡣ⎔ቃ࢔ேࡢẟ㧥ࡢᨺᑕ໬ศᯒࠊ࡜ᐃࡵ࡚ࠊᙼዪ࡟ฟ㌟ၥ㢟ࢆ⪃࠼ࡿୖ࡛ࠊ㔜せ࡞஦࡛࠶ࡿࠋ
ᆅࡢࢫ࣐ࢺࣛᓥࡸࢪࣕ࣡ᓥࡢఫேࡢẟ㧥ヨᩱࢆ            -55ࠊ+5 Ꮝࠊ-55ࠊ7 Ꮝࠊᨺᑕ໬ศᯒ㸦⎔ቃヨᩱ㸧- 256 -

㻝㻜㻠

JAEA-Review 2013-040

ศࡗࡓࠋ ࡲࡓࠊ࣌ࢵࢺ࣎ࢺࣝᶞ⬡ࡣ⸆ရ࡟ࡓ࠸ࡋ࡚᢬ᢠ ୍᪉ࠊ ࣨ᭶෭༷ᚋ࡟ ᐃࡋࡓ㛗ᑑ࿨⏕ᡂ᰾✀ᛶࡀᙉࡃࠊ⋤Ỉ࡞࡝ࡢᙉ㓟࡛ᖖᅽୗ࡛↻࡚ࡶࠊ᏶࡟ ࡘ ࠸ ࡚ ࡣࠊ ᭷ ᐖ ඖ ⣲࡟ 㝈 ࡗ ࡚ ิᣲ ࡍ ࡿ ࡜ ࠊ඲࡟ศゎࡋ࡚⁐ᾮ࡟࡞ࡽ࡞࠸ࠋḟ࡟ࠊ㣕⅊ヨᩱ࡟+J㸦༙ῶᮇ⣙  ᪥㸧ࠊ6E㸦༙ῶᮇ⣙ ࡣᾘ▼⅊ࡀΰධࡉࢀ࡚࠸ࡿࡢ࡛ࠊ,&3 ᐃ࡟౪ࡍ᪥㸧ࠊ)H㸦༙ῶᮇ⣙  ᪥㸧ࠊ=Q㸦༙ῶᮇ⣙ࡿࡓࡵ࡟ࡣࠊヨᩱࢆ㓟࡛⁐࠿ࡋ࡚ࡶ኱㔞࡟ᕼ㔘ࡍ ᪥㸧ࠊ&U㸦༙ῶᮇ⣙  ᪥㸧࡞࡝ࡢከᩘࡢඖࡿᚲせࡀ࠶ࡿࠋࡲࡓࠊάᛶⅣࡸ⌛㓟ሷ࡞࡝ࡶΰࡌ
⣲ࡢࣆ࣮ࢡࡀ☜ㄆ࡛ࡁࡓࠋࡓࡔࡋࠊ ศ↷ᑕᚋ࡟ࡗ࡚࠸ࡿࡓࡵ࡟ࠊ᏶඲࡟⁐ᾮ໬ࡍࡿࡢ࡟ࡣࡸࡸᡭ
㸯ヨᩱ  ୓⛊ ᐃ࡛ࠊᐃ㔞࡛ࡁࡓ⏕ᡂ᰾✀ࡣ㛫ࡶ࠿࠿ࡿࠋᚑࡗ࡚ࠊ⁐ᾮ໬ࡢ᧯సࡀ୙せ࡞ᨺᑕ+J ࡜ =Q ࡢࡳࠋྠࡌ᮲௳࡛௚ࡢඖ⣲ࡶᐃ㔞໬ศᯒࡣࡇࢀࡽࡢヨᩱࡢᚤ㔞ศᯒ࡟㐺ࡋ࡚࠸ࡿࠋ
ࡍࡿሙྜ࡟ࡣࠊ㧗⣧ᗘ▼ⱥ࢞ࣛࢫ࡟ヨᩱࢆᑒධࡋ
࡚ࠊ㸴᫬㛫↷ᑕࢆࡍࡿᚲせࡀ࠶ࡿࠋ
ẟ㧥ヨᩱࡢᨺᑕ໬ศᯒ ࡞࠾ࠊ኱Ꮫ㝔ᐇ⩦࡛⾜࡞ࡗࡓ㝔⏕㸴ྡࡢẟ㧥ヨᩱࡢᨺᑕ໬ศᯒࡢ⤖ᯝᚓࡽࢀࡓỈ㖟⃰ᗘࡣ㸯ྡ ึᖺᗘࡢணഛᐇ㦂࡜ࡋ࡚࠾ࡇ࡞ࡗࡓࠊẟ㧥ヨᩱࡀ SSP ࡜ప࠿ࡗࡓࡀࠊṧࡾࡢ㸳ྡࡣࡍ࡭࡚⣙ࡢᨺᑕ໬ศᯒࡢ᧯స࡟ࡘ࠸࡚ㄝ᫂ࡍࡿࠋࡇࡲ࠿ࡃ
SSP ࡜ᐃ㔞ࡉࢀࡓࠋ㣗஦ࡢዲࡳࢆイࡡࡓᡤࠊẟษࡾ้ࢇࡔẟ㧥ヨᩱࢆ Υ࡛㸲᫬㛫஝⇱ࡉࡏ࡚ࠊ㧥୰ࡢỈ㖟⃰ᗘࡀ௚ࡢேࡢ༙ศࡔࡗࡓ㸯ྡࡔࡅ⛗㔞ࡋࡓࠋ࣏࢚ࣜࢳ࡛ࣞࣥ㸱㔜࡟ࢩ࣮࣒ᑒධࡋࡓ
ࡀ㨶ࡀ᎘࠸࡜ᅇ⟅ࡋࡓࡢ࡛ࠊࡸࡣࡾẟ㧥୰ࡢඖ⣲⣙ PJ ࡢẟ㧥ヨᩱࢆࠊᅜ❧⎔ቃ◊Ⓨ⾜ࡢᶆ‽ヨ⃰ᗘࡣ⎔ቃࡸ⏕ά⩦័࡜ࡢ㛵㐃ࢆ♧ࡋ࡚࠸ࡿࡢ
ᩱ 1,(6&501R ࡜ඹ࡟ࠊධࢀࡓ࢝ࣉࢭࣝࢆࠊ
ࡔ࡜ㄆ㆑ࡋࡓࠋ
-55 ࡢ⟶↷ᑕタഛ 7$ ࡛  ศ㛫↷ᑕࡋ࡚ࠊ㸯㐌㛫࡯࡝෭༷ᚋ࡟Ⓨ㏦ࠊ໭኱࡬ᦙ㏦ࡋ࡚ࠊ໭኱ࡢ
࣌ࢵࢺ࣎ࢺࣝᶞ⬡୰ࡢ࢔ࣥࢳࣔࣥྵ᭷㔞⟶⌮༊ᇦෆ࡛ワࡵ᭰࠼࡚㸯ヨᩱ࠶ࡓࡾࡑࢀࡒࢀ㸱᫬㛫 ᐃࢆ⾜࡞ࡗࡓࠋࡉࡽ࡟㸯ࣨ᭶௨ୖ෭༷ࡋ
ࡓᚋࠊ㸯ヨᩱ࠶ࡓࡾࡑࢀࡒࢀ㸴᫬㛫 ᐃࢆヨࡳࡓࠋ  ࣌ࢵࢺ࣎ࢺࣝᶞ⬡ࡢᖹ㠃࡜࡞ࡗ࡚࠸ࡿ㒊ศࢆ┤ᚄ㸯FP ࡢ෇┙≧࡟ษࡾᢤ࠸ࡓࡶࡢࢆ㸰ࠊ㸱ᯛ㔜 ᙜึࡣ᭱ึࡢ ᐃ๓ࡢ෭༷ᮇ㛫ࡣ㸱᪥࡯࡝࡟ࡡ࡚⛗㔞ࡋࡓヨᩱ⣙ PJ ࢆ࣏࢚ࣜࢳ࡛ࣞࣥ ࡋ࡚ࠊ኱Ꮫ㛤ᨺ◊࡟࡚ &G㸦༙ῶᮇ⣙  ᪥㸧㔜࡟ࢩ࣮࣒ᑒධࡋࡓᨺᑕ໬ヨᩱࢆࠊ࢔ࣥࢳࣔࣥཎ
ࡸ $V㸦༙ῶᮇ⣙  ᪥㸧࡞࡝ࡢ᭷ᐖ㔠ᒓࡢᐃᏊ྾ගศᯒ⏝ᶆ‽⁐ᾮࢆࢁ⣬࡟ᆶࡽࡋ࡚࠿ࡽ஝
㔞ࢆ⾜࡞࠺ࡘࡶࡾࡔࡗࡓࡀࠊ%U㸦༙ῶᮇ⣙ ᅛࡍࡿࡇ࡜࡛సᡂࡋࡓᶆ‽ヨᩱࡸᶆ‽ሁ✚≀ヨ᪥㸧ࡢᨺᑕ⬟ࡀᙉࡃࡼ࠸ᐃ㔞್ࡀᚓࡽࢀ࡞࠸ࡇ࡜
ᩱ -6G㸦࢔ࣥࢳࣔࣥྵ᭷㔞 SSP ࡯࡝㸧࡜ඹࡀุ᫂ࡋࡓࠋࡲࡓࠊ໭኱࡟㍺㏦ࡍࡿ࡟ࡣ㸯㐌㛫㏆࡟ධࢀࡓ࢝ࣉࢭࣝࢆࠊ-55 ࡢ⟶↷ᑕタഛ +5 ࡛ࡃ෭༷ࡍࡿᚲせࡀ࠶ࡗࡓࠋ≉࡟ᶆ‽ヨᩱ 1,(6&50 ศ㛫↷ᑕࡋ࡚ࠊ ᪥࡯࡝෭༷ᚋ࡟Ⓨ㏦ࠊ໭኱
1R ࡟ࡣ⮯⣲ࡀ㏻ᖖࡢẟ㧥ヨᩱࡼࡾࡶ୍᱆௨ୖ
࡬ᦙ㏦ࡋ࡚ࠊ໭኱ࡢ⟶⌮༊ᇦෆ࡛ワࡵ᭰࠼࡚㸯ከࡃ⣙ⓒSSP ྵࡲࢀ࡚࠸ࡿࡓࡵࠊᨺᑕ໬ศᯒࡢ୰
ヨᩱ࠶ࡓࡾࡑࢀࡒࢀ㸰᫬㛫࡯࡝Ț⥺ィ ࢆ࠾ࡇᑑ࿨᰾✀ ᐃࡢᶆ‽ヨᩱ࡜ࡋ࡚ࡣ㐺ࡉ࡞࠸ࡇ࡜
࡞ࡗࡓࠋࡀࢃ࠿ࡗࡓࠋࣃ࣮࣐ࡸẟᰁࡵ࡞࡝ࢆࡋ࡚࠸࡞࠸ே ศᯒࡋࡓ᪥ᮏ〇ရࡢ࣌ࢵࢺ࣎ࢺࣝᐜჾࡢ〇ရ㛫ࡢ㏻ᖖࡢẟ㧥୰ࡢ⮯⣲⃰ᗘࡣᩘ SSP ⛬ᗘ࡛࠶ࡿ㈍኎ඖ ࡣࠊ∝೺⨾ⲔPO ࢥ࢝ࢥ࣮ࣛ ࠊ∝ࡓࡵࠊᶆ‽ヨᩱ 1,(6&501R ࡣࣃ࣮࣐ࡸẟᰁ೺⨾Ⲕ/ࢥ࢝ࢥ࣮ࣛ ࠊࣅࢱ࣑࢛࣮ࣥ࢘ࢱ࣮
ࡵࢆࡋࡓᡂேዪᛶࡢẟ㧥ࢆ୺࡞ཎᩱ࡟ࡋ࡚సᡂ
PO ࢧࣥࢺ࣮ࣜ ࠊ༗ᚋࡢ⣚Ⲕ/ ࢟ࣜࣥ ࠊࡉࢀࡓࡢࡔ࡜᥎ ࡋ࡚࠸ࡿࠋ
༗ᚋࡢ⣚ⲔPO ࢟ࣜࣥ ࠊ&& ࣞࣔࣥ/ ࢧ ࡑࡇ࡛⮯⣲ྵ᭷㔞ࡀ㸱SSP ྎࡢᅜ㝿ཎᏊຊᶵ㛵ࣥࢺ࣮ࣜ ࠊࣇ࢓ࣥࢱࢢ࣮ࣞࣉPO ࢥ࢝ࢥ࣮Ⓨ⾜ࡢᶆ‽ヨᩱ ,$($ ࢆὀᩥࡋࡓࡀࠊࡇࡢヨࣛ ࠊ࢔ࣝ࢝ࣜ࢖࢜ࣥࡢỈ/ ࢟ࣜࣥ ࠊ᳃ࡢᩱࡢྵ᭷㔞ࡢ᥎ዡ᳨್࡛㔞⥺ࢆ☜ᐃࡋ࡞࠸࡛࡯
Ỉࡔࡼࡾ/ ࢥ࢝ࢥ࣮ࣛ ࠊ࣌ࣉࢩࢿࢵࢡࢫ
ࡋ࠸࡜ࠊ࡜ࡑࡢᶆ‽ヨᩱࡢ஦ົᒁ࠿ࡽヨᩱⓎ㏦᫬ࢮࣟPO ࢧࣥࢺ࣮ࣜ ࠊ࣌ࣉࢩࢿࢵࢡࢫࢮࣟ
࡟࣓࣮࡛ࣝᛕࢆᢲࡉࢀࡓࠋ኱᳃ඛ⏕࡟ࡼࡿ࡜ࠕẟ/ ࢧࣥࢺ࣮ࣜ ࠊᑠᒾ஭ࡳ࠿ࢇ/ ࢟ࣜࣥ ࠊ㧥ࡢᶆ‽ヨᩱࡢྵ᭷㔞ࡣ୙ᆒ୍ᛶࡀ኱ࡁ࠸ࠖ࡜࠸
ᑠᒾ஭ࡳ࠿ࢇPO ࢟ࣜࣥ ࠊ㯮ᯇෆỈᙬࡢ᳃࠺ࡇ࡜࡛࠶ࡿࡢ࡛ࠊ᥎ዡ್࡟⮬ಙࡀ࡞࠸ࡽࡋ࠸ࠋ
/ 㯮ᯇෆ㖭Ỉᰴᘧ఍♫ ࠊභ᮲㯏Ⲕ/ ᳨࢝㔞⥺ࢆసᡂࡍࡿ࡟ࡣཎᏊ྾ග⏝ᶆ‽⁐ᾮࡢΰࢦ࣓ ࡞࡝࡛ࠊP/ ᐜჾࡣ  ✀㢮ࡢ〇ရࢆࠊ/ྜᾮࢆ஝⇱ࡉࡏ࡚సᡂࡋ࡚ࠊ࣐ࢺࣜࢵࢡࢫຠᯝࡢ࠿ࡽ / ࡢᐜჾࡣ  ✀㢮ࡢᶞ⬡୰ࡢ࢔ࣥࢳࣔࣥ࡟
ᑠࡉ࠸ᨺᑕ໬ศᯒࡢ≉ᚩࢆ⏕࠿ࡋ࡚ࠊᶆ‽ヨᩱࡣࡘ࠸࡚ศᯒࢆ࠾ࡇ࡞ࡗࡓࠋ
ẟ㧥࡟㝈ࡽࡎ࡟┠ⓗᚤ㔞ඖ⣲ࡢ⃰ᗘࡀᐃ㔞࡛ࡁ ࡲࡓḢ⡿ࡢእᅜ〇ရ࡟ࡘ࠸࡚ࡣࠊࣦ࢕ࢵࢸࣝ
ࡿ⛬㧗ࡃࠊ࠿ࡘᆒ୍ᛶࡀ㧗ࡃ࡚᥎ዡ್ࡢಙ㢗ࡁࡿ㸦ࣇࣛࣥࢫ㸧ࠊ࢚ࣅ࢔ࣥ㸦ࣇࣛࣥࢫ㸧ࠊ࣎ࣝ࢕ࢵࢡ
⏕యᶆ‽ヨᩱࡶే⏝ࡍࡿ஦ࡀᚲせ࡛࠶ࡿࡇ࡜ࡀ

4-6


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JAEA-Review 2013-040ࡋࡓᡂศࡀ௜╔ࡍࡿࡓࡵࠊከࡃࡢሙྜࡣ᭷ᐖ࡞㔜㸦ࣇࣛࣥࢫ㸧ࠊࢥࣥࢺࣞࢵࢡࢫ㸦ࣇࣛࣥࢫ㸧ࠊࢡࣜ㔠ᒓࡀ⃰⦰ࡋ࡚࠸ࡿ஦ࡀከ࠸ࠋࡋ࠿ࡋࠊࡍ࡭࡚ࡢ
ࢫࢱࣝ࢞࢖ࢨ࣮㸦⡿ᅜ㸧ࠊࢧࣥࢱࣖࢼ㸦ࢡࣟ࢔ࢳ㔜㔠ᒓࡀ㣕⅊࡟⛣⾜ࡍࡿヂ࡛ࡣ࡞ࡃࠊ㣕⅊࡜୺⅊࢔㸧ࠊ࣒ࣖࢽࢵࢶ࢔㸦࢖ࢱࣜ࢔㸧ࠊࢧࣥ࣋ࢿࢹࢵࢺ
ࡢ୧᪉࡟ศ㓄ࡉࢀࡿ࡜࠸࠺ࠋ౛࠼ࡤࠊ኱㜰ᕷࡢ㒔㸦࢖ࢱࣜ࢔㸧ࠊ࣮࢘ࣜ࣋ࢻ㸦࢖ࢱࣜ࢔㸧ࠊࢧࣥࣉࣞᕷࡈࡳ  ࢺࣥ࠶ࡓࡾ࡟ࡣ࢔ࣥࢳࣔࣥࡣ J ྵࢢࣜࣀ㸦࢖ࢱࣜ࢔㸧ࡢ  ✀㢮ࡢ P/ᐜჾࢆࠊ
ࡲࢀࠊ↝༷ࡉࢀࡿ࡜㣕⅊୰࡟࢔ࣥࢳࣔࣥࡀ 
/ࠥ/ ᐜჾ࡟ࡘ࠸࡚ࡣࣦ࢕ࢵࢸࣝ㸦ࣇࣛࣥࢫ㸧ࠊศ 㓄 ࡉ ࢀ ࡓ ࡜ ᥎ ᐃ ࡉ ࢀ ࡚ ࠸ ࡿ 㸦 :DWDQDEH HW࢚ࣅ࢔ࣥ㸦ࣇࣛࣥࢫ㸧ࠊ࣎ࣝ࢕ࢵࢡ㸦ࣇࣛࣥࢫ㸧ࠊ
DO㸧ࠋࡶࡕࢁࢇࠊ↝༷ሙ࡟ࡼࡗ࡚ࠊ㔜㔠ᒓࢥࣥࢺࣞࢵࢡࢫ㸦ࣇࣛࣥࢫ㸧ࡢ㸲✀㢮ࡢᐜჾ࡟ࡘ
ࡢ⛣ືࡸ㓄ศࡣ኱ࡁࡃ␗࡞ࡿ஦ࡶ࠶ࡾ࠼ࡿࠋ࡛ࡣࠊ
࠸࡚ศᯒࢆ࠾ࡇ࡞ࡗࡓࠋࡉࡽ࡟ࠊ࢖ࣥࢻࢿࢩ࢔࡟
ᮐᖠᕷⓑ▼Ύᤲᕤሙ࡛ࡢࢦ࣑ฎ⌮㐣⛬࡟࠾ࡅࡿ
࡚㈍኎ࡋ࡚࠸ࡿ࣌ࢵࢺ࣎ࢺࣝࡣࣉ࣐ࣜࠊ࢜ࣝࢺࠊ
࢔ࣥࢳࣔࣥࡢᣲືࡣ࡝ࡢࡼ࠺࡛࠶ࢁ࠺࠿ࠋ
ࢱࣥࢢࠊࣅࢵࢸࠊ࢔ࢡ࢔ࠊࢡࣞ࢜ࠊࣆࣗ࢔ࣛ࢖ࣇ ᮏ◊✲࡛ࡣࠊ ᖺ  ᭶  ᪥࡜ࠊ ᖺ 㸦ࢿࢵࢫࣝ㸧ࡢ㸵✀㢮࡛ࡍ࡭࡚㸰/ ᐜჾ࡛࠶ࡿࠋࡍ
᭶㸯᪥࠿ࡽ  ᖺ  ᭶  ᪥࡟⮳ࡲ࡛࡯ࡰ㸰㐌㛫࡭࡚㸯✀㢮ࡢᐜჾ࡟ࡘ࠸࡚㸰ヨᩱᨺᑕ໬ヨᩱࢆ࠾ࡁ࡟᥇ྲྀࡉࢀࡓ㣕⅊  ヨᩱࠊ࠾ࡼࡧ  ᖺ ࠊసᡂࡋ࡚ศᯒ࡟౪ࡋࡓࠋ ᭶࠾ࡼࡧ  ᖺ㸰᭶࡟᥇ྲྀࡉࢀࡓ୺⅊㸲ヨᩱ ศᯒࡢ⤖ᯝࠊእᅜࡢ 3(7 ᐜჾᶞ⬡࡟ࡣ  〇ရ࡟ࡘ࠸࡚ࠊ୰ᛶᏊᨺᑕ໬ศᯒࢆ࠾ࡇ࡞ࡗࡓࠋ࡞࠾ࠊ ✀㢮ࡢᐜჾࡍ࡭࡚࡟ࠊ࢔ࣥࢳࣔࣥࡀ 
 ᖺ  ᭶࡜  ᭶ࡣィ⏬⿵ಟᕤ஦ࡢࡓࡵ࡟ⓑ▼ᕤ
SSP ྵࡲࢀ࡚࠸ࡿࡢ࡟ࡓ࠸ࡋ࡚ࠊ᪥ᮏࡢ 3(7 ᐜჾሙࡣ✌ാࢆ೵Ṇࡋ࡚࠸ࡓࡓࡵ࡟ࠊࡑࡢ㛫ࡣヨᩱࡶᶞ⬡ࡢ⣙㸵๭࡟ࡣ࢔ࣥࢳࣔࣥࡀ SSP ྵࡲධᡭ࡛ࡁ࡞࠿ࡗࡓࠋ
ࢀ࡚࠸ࡿࡀࠊṧࡾࡢ㸱๭࡟ࡣ࢔ࣥࢳࣔࣥࡣ඲ࡃྵ ศᯒἲ࡜ࡋ࡚ࡣࠊ࣏࢚ࣜࢳ࡛ࣞࣥ  㔜࡟ࢩ࣮࣒ࡲࢀ࡚࠸࡞࠿ࡗࡓࠋ᪥ᮏࡢ㸱๭ࡢ 3(7 ᐜჾᶞ⬡ࡢᑒධࡋࡓ⣙ PJ ࡢ㣕⅊ヨᩱࡲࡓࡣ୺⅊ࢆࠊᶆ‽࣏࢚ࣜࢳࣞࣥࢸࣞࣉࢱ࣮ࣞࢺࡢ㔜ྜ๣࡟ࡣ࢔ࣥ
ሁ✚≀ヨᩱ -6G ࡜ඹ࡟ࠊࢁ⣬࡛ヨᩱࡢ㛫ࢆᣳࢇࢳ࡛ࣔࣥࡣ࡞ࡃࢤ࣐ࣝࢽ࣒࢘ࡀ౑⏝ࡉࢀ࡚࠸ࡿ
ࡔ≧ែ࡛ධࢀࡓ࢝ࣉࢭࣝࢆࠊ-55 ࡢ⟶↷ᑕタഛ࡜⪃࠼࡚ࡼ࠸ࠋ
7$ ࡛  ศ㛫↷ᑕᚋࠊ㸯㐌㛫࡯࡝෭༷ᚋ࡟Ⓨ㏦ࠊ ඛ⾜◊✲㸦ᆏᮏ࣭㔠Ꮚࠊ㸧࡛ࡣࠊᅜ⏘ 3(7໭኱࡬ᦙ㏦ࡋ࡚ࠊ໭኱ࡢ⟶⌮༊ᇦෆ࡛ワࡵ᭰࠼࣎ࢺࣝ  ရ┠୰  ရ┠࡟࢔ࣥࢳࣔࣥࡀ 㹼࡚㸯ヨᩱ࠶ࡓࡾࡑࢀࡒࢀ㸱᫬㛫 ᐃࢆ⾜࡞ࡗࡓࠋSSPࠊ㍺ධ 3(7 ࣎ࢺࣝ  ရ┠඲࡚࡟ࡣ 㹼SSP
ࡉࡽ࡟㸯ࣨ᭶௨ୖ෭༷ࡋࡓᚋࠊ㸯ヨᩱ࠶ࡓࡾࡑࢀ
ࡀྵࡲࢀ࡚࠸ࡓࠊ࡜ሗ࿌ࡉࢀ࡚࠾ࡾࠊᮏ◊✲࡛ࡣࠊࡒࢀ㸴᫬㛫 ᐃࢆヨࡳࡓࠋඛ⾜◊✲ࡢ⤖ᯝࡼࡾࡶ࢔ࣥࢳࣔࣥࡢ⃰ᗘࡀ㧗ࡃࠊᐃࡢ⤖ᯝࠊ ᖺ  ᭶㸯᪥࠿ࡽ  ᖺ  ᭶ࡲࡓ᪥ᮏ〇ရ࡛ࡣ࢔ࣥࢳࣔࣥࢆ㔜ྜ๣࡜ࡋ࡚౑ ᪥ࡲ࡛ࡢ㣕⅊ヨᩱ୰ࡢ࢔ࣥࢳࣔࣥᖹᆒ⃰ᗘࡣࠊ⏝ࡋ࡚࠸ࡿ〇ရࡀ㸵๭࡜㧗࠸๭ྜ࡜࡞ࡗࡓࠋእᅜ
㔜㔞ࡢ㸱๭ࡀΰྜࡉࢀࡓᾘ▼⅊࡜⪃࠼࡚⿵ṇࡍ〇ရ࡛ࡣࡍ࡭࡚࢔ࣥࢳࣔࣥࡀ㔜ྜ๣࡜ࡋ࡚౑⏝ࡿ࡜ࠊsSSP ࡞ࡢ࡟ࡓ࠸ࡋ࡚ࠊ୺⅊㸲ヨᩱࡉࢀ࡚࠸ࡿ஦ࡣඛ⾜◊✲࡜୍⮴ࡋࡓࠋࡢᖹᆒ⃰ᗘࡣ sSSP ࡜࡞ࡾࠊ࢔ࣥࢳࣔࣥࡢ
ሙྜ࡟ࡣ㣕⅊࡜୺⅊࡟࡯ࡰ༙ࠎ࡛ศ㓄ࡉࢀࡿࡼᮐᖠᕷΎᤲᕤሙࡢ㣕⅊୰࢔ࣥࢳࣔࣥྵ᭷㔞࠺࡛࠶ࡿࠋࡇࢀࡣࠊ኱㜰ࡢ↝༷⅔࡛ࡢㄪᰝ⤖ᯝ㸦:DWDQDEHHWDO㸧࡜ࡶྠࡌ࡛࠶ࡿࠋࡲࡓࠊ ᮐᖠᕷ࡟ࡣᕷẸ࠿ࡽ࡛ࡿࢦ࣑↝༷ሙࡀ࠸ࡃࡘ
ி㒔ᕷࡢ஧ࡘࡢ㒔ᕷࡈࡳ↝༷⅔ࡢ㣕⅊୰࡟ࡣࠊ࢔
࠿࠶ࡿࡀࠊࡑࡢ୰ࡢ᭱኱ࡢ᪋タࡣࠊᖹᡂ  ᖺ ࣥࢳࣔࣥࡀࡑࢀࡒࢀ SSPࠊSSP ྵࡲࢀ࡚᭶❹ᕤࡋࡓᮐᖠᕷⓑ▼Ύᤲᕤሙ࡛࠶ࡿࠋ ᖺᗘࡢࡇࡢᕤሙ࡛ࡢ୍ᖺ㛫ࡢࢦ࣑ฎ⌮㔞ࡣ Wࠋ ࠸ࡓ㸦1DNDPXUDHWDO㸧࡜ሗ࿌ࡉࢀ࡚࠸
ࡿࡢ࡛ࠊᚋ⪅ࡢ ᐃ್࡜࡯ࡰྠࡌ⤖ᯝ࡜࡞ࡗࡓࠋ
ࡑࢀ࡟ᑐࡋ࡚ࠊᮐᖠᕷ඲య࡛ࡣ Wࡢࢦ࣑ ࡲࡓࠊ㣕⅊࡜୺⅊࡜࡛ࡣࠊள㖄ࠊࢥࣂࣝࢺࠊ㕲ࠊࢆ↝༷ฎศࡋ࡚࠸ࡿ࡜࠸࠺஦࡞ࡢ࡛ࠊᮐᖠᕷ࠿ࡽ
ࢫ࢝ࣥࢪ࣒࢘࡞࡝ࡢඖ⣲ྵ᭷㔞ࡀ኱ࡁࡃ␗࡞ࡾࠊ
ฟࡿࢦ࣑ࡢ⣙㸲๭ࢆฎ⌮ࡋ࡚࠸ࡿィ⟬࡜࡞ࡿࠋࢦ
ࡇࡢ⤖ᯝ࡟ࡘ࠸࡚ࡣ ,&3 Ⓨගศᯒࡢࢹ࣮ࢱ࡜ඹ࡟
࣑ࡣ↝༷⅔࡛⇞ࡸࡉࢀ࡚ࠊ↝༷⅔ࡢᗏ࡟ࡓࡲࡿ⅊࠶࡜࡛Ⓨ⾲ࡋࡓ࠸࡜⪃࠼࡚࠸ࡿࠋ࡞࠾ࠊ ᖺ ࡣࠕ୺⅊ࠖ࡜࿧ࡤࢀ࡚࠸ࡿࡢ࡟ᑐࡋ࡚ࠊ↝༷⅔ෆ
᭶  ᪥ࡢヨᩱࡢࡳࠊ࢔ࣥࢳࣔࣥ⃰ᗘࡀ SSP
ࡢ✵୰࡟ᾋ㐟ࡍࡿᚤ⢏Ꮚ࠿ࡽ࡞ࡿ⅊ࢆࣇࣛ࢖࢔
࡜㸯㸮᭶௨㝆ࡢᖹᆒ್ࡢ㸰ಸ㏆࠸್ࢆᣢࡗ࡚࠸
ࢵࢩࣗ㸦㣕⅊㸧ࡲࡓࡣࠕࡤ࠸ࡌࢇࠖ࡜࿧ࡤࢀ࡚࠸
ࡓࠋᜍࡽࡃࠊᮐᖠᕷ࡛ࡣࢦ࣑ࡢ௙ศࡅࡢ௙᪉ࡀ
ࡿࠋࡇࡢⓑ▼Ύᤲᕤሙ࡛ࡣࠊࡇࡢ㣕⅊ࡣᾘ▼⅊ࡸ ᖺࡢ㸵᭶࠿ࡽ኱ᖜ࡟ኚࢃࡗࡓࡓࡵ࡟ࠊࢦ࣑ࡢ
άᛶⅣ࡜ΰྜࡉࢀࡓᚋ࡟ࠊ㞟ሻᶵࡢࣇ࢕ࣝࢱ࣮࡛
ෆᐜ≀ࡶ㸵᭶௨๓࡜㸯㸮᭶௨㝆࡛኱ࡁࡃኚ໬ࡋ
࡯࡜ࢇ࡝ࡀᤕ㞟ࡉࢀ࡚ࠊእ㒊࡟᤼ฟࡉࢀࡿ㔞ࡣ㝈ࡓ஦ࢆ཯ᫎࡋ࡚࠸ࡿࡢࡔࢁ࠺࡜᥎ᐹࡋ࡚࠸ࡿࠋ
ࡽࢀࡿࡑ࠺ࡔࠋ࡞࠾ࠊࡇࡢ㣕⅊࡟ࡣࠊ↝༷⅔ෆ࡛
 ๓⠇ࡢ࣌ࢵࢺ࣎ࢺࣝ୰ࡢ࢔ࣥࢳࣔࣥྵ᭷㔞ࡢ࠸ࡗࡓࢇ᥹Ⓨࡋ࡚࠿ࡽ෭ࡉࢀ࡚࠸ࡃ࠺ࡕ࡟จ㞟4-6


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JAEA-Review 2013-040ᐃ㔞⤖ᯝ࠿ࡽࠊ3(7 ࣎ࢺࣝᐜჾᖹᆒ࢔ࣥࢳࣔࣥྵ
᭷㔞ࢆ PJNJ ࡜ࡍࡿࠋᖹᡂ  ᖺᗘᮐᖠᕷ⎔ቃᒁሗ࿌᭩࡟ࡼࡿ࡜ࠊᮐᖠᕷ 3(7 ࣎ࢺࣝฎ⌮㔞ࡣ W ࠊᮐᖠᕷ 3(7 ࣎ࢺࣝศูᅇ཰⋡ࡣ ࡞ࡢ࡛ࠊศูᅇ཰ࡉࢀ࡞࠸ 3(7 ࣎ࢺࣝࡀ୍⯡ࢦ࣑࡟ΰࡌࡗ࡚ࠊ඲࡚⇞ࡸࡉࢀࡿ࡜௬ᐃࡍࡿ࡜ࠊ୍ᖺ
㛫࡟ᮐᖠᕷ࡛↝༷ࡉࢀࡿ 3(7 ࣎ࢺࣝண᝿㔞ࡣ 
W ࡜࡞ࡿࠋࡑ࠺ࡍࡿ࡜ࠊ୍ᖺ㛫࡟ᮐᖠᕷ࡛↝༷
ࡉࢀࡿ 3(7 ࣎ࢺࣝ⏤᮶ࡢ࢔ࣥࢳࣔࣥ㔞ࡢண᝿㔞ࡣ㸭  NJ ࡜ィ⟬ࡉࢀࡿࠋࡇࡢ
༙ศࡀ㣕⅊࡟ศ㓄ࡉࢀࡿ࡜௬ᐃࡍࡿࠋ ୍᪉㸪ⓑ▼Ύᤲᕤሙࡢᢸᙜ⪅࡟࠺࠿ࡀࡗࡓ࡜ࡇࢁࠊ ᖺ㛫࡟ⓑ▼Ύᤲᕤሙ࡛⏕ᡂࡉࢀࡿ㣕⅊㔞ࡣW ࡛ࠊⓑ▼Ύᤲᕤሙࡀᮐᖠᕷࡢ⣙ ࡢ↝༷㔞ࢆ༨ࡵࡿࡇ࡜࠿ࡽࠊ ᖺ㛫࡟ᮐᖠᕷࡢΎᤲᕤ
ሙ࡛⏕ᡂࡉࢀࡿ㣕⅊඲㔞ࡣ⣙W ࡜࡞ࡿࠋ௨ୖࡢ஦࠿ࡽࠊᮐᖠᕷࡢΎᤲᕤሙ࡛⏕ᡂࡉࢀࡿ㣕⅊୰ࡢ 3(7 ࣎ࢺࣝ⏤᮶ࡢ࢔ࣥࢳࣔࣥ⃰ᗘࡣ
Ҹ SSP  ࡔ࡜ィ⟬ࡉࢀࡿࠋࡘࡲࡾࠊ㣕⅊୰ࡢ࢔ࣥࢳࣔࣥࡢ࠺ࡕࡢࡓࡗࡓ㸯㸣⛬ᗘࡀࠊࣜࢧ࢖ࢡࣝࡏࡎ࡟↝༷ࡉࢀࡓ 3(7 ࣎ࢺࣝ࡜࠸࠺ពእ࡞⤖ᯝ࡟࡞ࡗࡓࠋᜍࡽࡃࠊ3(7 ࣎ࢺࣝࡢࣜࢧ࢖ࢡࣝ࡟ࡼࡾసࡽࢀࡓࣉࣛࢫࢳࢵࢡ〇ရࠊ౛࠼ࡤ༸ࡢࣃࢵࢡࡸࠊ㞴⇞ຓ๣࡜ࡋ࡚࢔ࣥࢳࣔࣥ
ࡀῧຍࡉࢀࡓࣉࣛࢫࢳࢵࢡ〇ရ࡟ࡼࡿᐤ୚ࡀ኱
ࡁ࠸ࡢࡔࢁ࠺࡜᥎ᐹࡋ࡚࠸ࡿࠋ ࡑࡢᡂᯝࡢホ౯࡜௒ᚋࡢ᪉㔪 ẟ㧥ヨᩱࡢᨺᑕ໬ศᯒࢆࡍࡿሙྜ࡟ࡣࠊㅖඛ㍮
࠿ࡽᣦ᦬ࡉࢀࡓࡼ࠺࡟ࠊ࢔ࣥࢣ࣮ࢺ࡞࡝ࡢ࿘฿࡞
ࡿ᝟ሗࡢ࠶ࡿヨᩱ࡟ࡘ࠸࡚⣔⤫ⓗ࡟ศᯒࡍࡿᚲ
せࡀ࠶ࡾࠊ࢖ࣥࢻࢿࢩ࢔࡞࡝ࡢᆅᇦࡢヨᩱ࡟╔࠸࡚ศᯒࡍࡿ㝿࡟ࡶ␃ពࡋ࡚⾜ࡁࡓ࠸ࠋ
 3(7 ࣎ࢺࣝᐜჾ࡟ࡘ࠸࡚ࡢ◊✲⤖ᯝࡣࠊỈ࡬ࡢ࢔ࣥࢳࣔࣥࡢ⁐ฟᐇ㦂࡜࡜ࡶ࡟ࠊᡂᯝࢆⓎ⾲ࡍࡿணᐃ࡛࠸ࡿࠋ 㣕⅊ヨᩱ࡟ࡘ࠸࡚ࡣ⌧ᅾ 03*$ ࡛࢝ࢻ࣑࣒࢘ࢆ
ศᯒࡋ࡚࠾ࡾࠊࡉࡽ࡟ ,&3 Ⓨගศᯒࡢ⤖ᯝࡶྜࢃࡏ࡚ࠊᏛ⾡ㄅ࡟Ⓨ⾲ࡍࡿணᐃ࡛࠸ࡿࠋ
>ཧ⪃ᩥ⊩@<DVXWDNH $NLUD 0DWVXPRWR 0L\XNL <DPDJXFKL0DVDNR DQG +DFKL\D 1RUL\XNL   &XUUHQW+DLU0HUFXU\/HYHOVLQ-DSDQHVHIRU(VWLPDWLRQ
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኱᳃ᕥ⯆Ꮚ㸦㸧ࠕẟ㧥ࡢከඖ⣲ᨺᑕ໬ศᯒ̾̾
⎔ቃởᰁ≀ᐊ᭚㟢ᣦᶆ࡜ࡑࡢ⏕యᙳ㡪ᗘᢕᥱ࡬ࡢ㐺⏝ࠖᨺᑕ໬ศᯒ 1RSS
1)XUXWD$,LMLPD$.DQEH.6DNDLDQG
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SDUWLFXODWH PDWWHU FROOHFWHG LQ 7RN\R IURPWR-(QYLURQ0RQLW
ᆏᮏᗈ⨾㔠Ꮚᰤᘅ  3(7 ࣎ࢺࣝ࡜ࡑࡢࣜࢧ࢖ࢡࣝ〇ရ࡟ྵࡲࢀࡿ 6E ཬࡧ *H ࡢᐃ㔞⎔ቃ໬Ꮫ

1:DWDQDEH6,QRXHDQG+,WR  0DVVEDODQFHRIDUVHQLFDQGDQWLPRQ\LQPXQLFLSDOZDVWHLQFLQHUDWRUV-RXUQDORIPDWHULDOF\FOHVDQGZDVWHPDQDJHPHQW9RO
.1DNDPXUD6.LQRVKLWDDQG+7DNDWVXNL 7KHRULJLQDQGEHKDYLRURIOHDGFDGPLXPDQGDQWLPRQ\LQ06:LQFLQHUDWRU:DVWH
0DQDJHPHQW
ᖹᡂ  ᖺᗘᮐᖠᕷ⎔ቃᒁሗ࿌᭩
KWWSZZZFLW\VDSSRURMSNDQN\RPDQDJHPHQWHPVBMLJ\RVKDKRXNRNXVKRWHQKWPO㸬ᡂᯝࡢබ⾲
ࠝᏛ఍Ⓨ⾲ࠞձࠕᮐᖠᕷ࡟࠾ࡅࡿ 3(7 ࣎ࢺࣝᶞ⬡୰࡟ྵࡲࢀࡿ࢔ࣥࢳࣔࣥࡢ⎔ቃືែࠖ
ᕝᮧⱥுࠊ㇏⏣࿴ᘯ  ᖺ  ᭶  ᪥ᨺᑕ໬ศᯒᑓ㛛◊✲఍ ி㒔኱ᏛཎᏊ⅔ᐇ㦂ᡤ

4-6

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JAEA-Review 2013-040

4-7
࢝࣡࢘(Phalacrocorax carbo) ࡟࠾ࡅࡿ᭷ᶵែࣁࣟࢤࣥ(EOX)ࡢయෆศᕸ࡜⵳✚≉ᛶ'LVWULEXWLRQDQG$FFXPXODWLRQ&KDUDFWHULVWLFVRI([WUDFWDEOH2UJDQLF+DORJHQV (2; 
LQ2UJDQVDQG7LVVXHVRI*UHDW&RUPRUDQWឡ፾኱Ꮫ㎰Ꮫ㒊 Ἑ㔝බᰤᯇ⏣᐀᫂
ཬࡧ &DQEHUUD0RGHO$ ࢆ⏝࠸Țࢫ࣌ࢡࢺ࣓ࣟࢺ

ࡣࡌࡵ࡟᭷ᶵࣁࣟࢤࣥ໬ྜ≀ࡣࠊ⎔ቃ୰࡛Ᏻᐃࡋ࠿ࡶ⏕≀࡟ᑐࡋ࣮ࣜࢆ⾜ࡗࡓࠋ

ẘᛶᙳ㡪ࢆཬࡰࡍࡇ࡜࠿ࡽࠊ⎔ቃ໬Ꮫࡢ◊✲ศ㔝࡛ࡣႚ⥭

PCBs ศᯒ࡟ࡘ࠸࡚ࡣࠊEOX ศᯒ⏝࡟ㄪ〇ࡋࡓ᭷ᶵ⁐࡟᳨ウࡍ࡭ࡁ⎔ቃởᰁ≀㉁࡜ࡋ࡚ᅜ㝿ⓗ࡟ࡶㄆ㆑ࡉࢀࠊṧ፹⢒ᢳฟᾮࡢ୍㒊ࢆศྲྀࡋ࣊࢟ࢧࣥὙίỈࢆຍ࠼᣺࡜࠺

␃ᛶ᭷ᶵởᰁ≀㉁ 3HUVLVWHQW2UJDQLF3ROOXWDQWV㸸㹎㹍ᚋ㟼⨨ࡋࠊୖᒙࡢ᭷ᶵ⁐፹ᒙࢆᅇ཰ࡋࡓࠋࡉࡽ࡟ࡑࡢ᭷ᶵ㹎㹱 ࡜ࡋ࡚ᆅ⌫つᶍ࡛ࡢ኱Ẽࠊᾏὒ࡞࡝ࡢ⎔ቃࣞ࣋ࣝᢕ

⁐፹ᒙ୰࡟⁐Ꮡࡍࡿጉᐖ≀㉁ࢆ㝖ཤࡍࡿࡓࡵ࡟⃰◲㓟ࢆᥱ࡜ືែゎᯒࡀ⾜ࢃࢀ࡚࠸ࡿࠋ௚᪉ࠊ⏕≀࡟㛵ࡋ࡚ࡶ⵳✚ຍ࠼᣺࡜࠺ࡋࠊ㓟ศゎฎ⌮ࢆ⾜ࡗࡓࠋࡑࡢᚋࠊࡉࡽ࡟ඹᏑ

ࣞ࣋ࣝࡢ᳨ウࡀ⾜ࢃࢀࠊࡑࢀࡽ໬ྜ≀ࡢ໬Ꮫⓗᛶ㉁࠿ࡽ୺

ጉᐖ≀㉁ࢆ㝖ཤࡍࡿࡓࡵ࡟࢔࣑ࣝࢼ࣒࢝ࣛࢡ࣐ࣟࢺࢢࣛ

࡟⬡⫫⤌⧊࡟⵳✚ࡍࡿࡇ࡜ࡀ᫂ࡽ࠿࡟ࡉࢀ࡚ࡁࡓࠋࡋ࠿ࡋ

ࣇ࢕࣮ࢆ⾜࠸ᚓࡽࢀࡓ PCBs ࢆྵࡴ⁐ฟ⏬ศࡢ⃰⦰ᾮࢆ࡞ࡀࡽ㏆ᖺࠊࣄࢺ⾑ᾮ୰࡟௦⾲ⓗ࡞᭷ᶵࣁࣟࢤࣥ໬ྜ≀࡛࢞ࢫࢡ࣐ࣟࢺࢢࣛࣇ㉁㔞ศᯒィ(HRGC/HRMS)ࢆ⏝࠸ࠊ࠶ࡿሷ⣲໬ࣅࣇ࢙ࢽ࣮ࣝ 㹎㹁㹀㹱 ࡢỈ㓟໬௦ㅰ≀ Ỉ㓟

PCBs ࢆᐃ㔞ࡋࡓࠋ࡞࠾ HRGC/HRMS ࡣ Agilent ♫〇໬ 3&%V㹆㹍㸫㹎㹁㹀㹱 ࡀࠊ⬡⫫⤌⧊࡟ẚ࡭ࡴࡋࢁ⾑ᾮ

6890 ᆺཬࡧ᪥ᮏ㟁Ꮚ〇 JMS-800D ᆺࢆ⏝࠸ࠊGC ⏝ࡢ࢟୰࡟㧗⃰ᗘ࡛Ꮡᅾࡍࡿࡇ࡜ࡀ᫂ࡽ࠿࡟ࡉࢀࠊࡑࡢẘᛶᙳ㡪ࣕࣆ࣮࣒ࣛࣜ࢝ࣛ࡜ࡋ࡚ HT-8 PCB(㛵ᮾ໬Ꮫ〇ࠊ࣒࢝ࣛࡀᠱᛕࡉࢀ࡚࠸ࡿࠋ≉࡟Ḣ⡿࡛ࡣࠊ㹎㹁㹀㹱ởᰁ㨶ࡢከ㣗㛗 60m, ෆᚄ 0.25mm)ࢆ⏝࠸ࡓࠋ࡞࠾ศᯒ᧯స᫬࡟࠾ࡅ

⪅ࡢᏊ౪࡟⬻ᶵ⬟ࡢⓎ㐩㞀ᐖࡀほᐹࡉࢀࠊ㹆㹍㸫㹎㹁㹀㹱ࡿศᯒㄗᕪࢆ᫂ࡽ࠿࡟ࡍࡿࡓࡵ࡟ࢡ࣮ࣜࣥ࢔ࢵࣉࢫࣃ࢖

ࡢᙳ㡪ࡀᣦ᦬ࡉࢀ࡚࠸ࡿࠋᐇ㝿ࠊࣛࢵࢺࢆ⏝࠸ࡓ LQYLWURࢡཬࡧࢩࣜࣥࢪࢫࣃ࢖ࢡ࡜ࡋ࡚ PCBs ࡢ 13C ࣛ࣋ࣝ໬ྜ≀ࡢヨ㦂⤖ᯝࠊ㹆㹍㸫㹎㹁㹀㹱ࡀ⬻⚄⤒⣽⬊ࡢᶞ≧✺㉳ࡢఙࢆ⏝࠸ࡓࠋ㛗ࢆ㜼ᐖࡋࠊᏛ⩦⬟ຊࡢపୗࢆᣍࡃࡇ࡜ࡀሗ࿌ࡉࢀ࡚࠸ࡿࠋ
ࡑࡇ࡛ᮏ◊✲࡛ࡣࠊ3&%V ࢆࡣࡌࡵ㹎㹍㹎㹱ࡢయෆ⃰ᗘࡀ⤖ᯝ࡜⪃ᐹ㧗࠸㨶㣗ᛶࡢ㔝⏕㫽㢮࡛࠶ࡿ࢝࣡࢘ࢆᑐ㇟࡟ࠊ⾑ᾮヨᩱࢆศᯒ࡟౪ࡋࡓ࢝࣡࢘ࡢ඲࡚ࡢ⤌⧊࣭ჾᐁヨᩱ࠿ࡽ EOX

ࡣࡌࡵࠊ㹎㹍㹎㹱ࡢ⵳✚⤌⧊࡜ࡋ࡚௦⾲ⓗ࡞⬡⫫⤌⧊ཬࡧࡀ᳨ฟࡉࢀࡓࠋ࢝࣡࢘ᡂ㫽㸦ܴ㸧㸯ಶయࡢ⤌⧊࣭ჾᐁ୰㹃ࡑࡢ௚ࡢ⤌⧊࣭ჾᐁ࡟ࡘ࠸࡚ࠊ㹃㹍㹖⃰ᗘࣞ࣋ࣝࢆẚ㍑᳨

㹍㹖ࡢ⃰ᗘ⠊ᅖࡣ㸮㸬70㹼㸱1ȣ㹥㸭㹥 㸦‵㔜㸧࡛࠶ࡾࠊウࡋࡓࠋ᭱ప⃰ᗘࡣ⭈⮚࠿ࡽࠊ᭱㧗⃰ᗘࡣ⬡⫫⤌⧊࠿ࡽ᳨ฟࡉࢀࡓࠋ
ࡕ࡞ࡳ࡟ศᯒ࡟౪ࡋࡓࡶ࠺㸯ಶయ㸦ᡂ㫽ࠊܴ㸧ࡶྠࡌࡃ⬡⫫⤌⧊ࡀ㧗⃰ᗘࢆ♧ࡋࠊ⤌⧊࣭ჾᐁ୰ࡢ⃰ᗘศᕸࡣྠࡌഴ

ヨᩱ࡜᪉ἲ
࢝࣡࢘ヨᩱࡣࠊ⍇⍈†➉⏕ᓥ࡟࠾࠸࡚  ᖺ  ᭶࡜ྥࢆ࿊ࡋࡓࠋᅗ 1 ࡟ࠊ࢝࣡࢘ࡢ⬡⫫⤌⧊ᢳฟᾮ࡟୰ᛶᏊࢆ

 ᖺ  ᭶࡟ࠊᐖ⋇㥑㝖ࡀ⾜ࢃࢀࡓṚஸಶయࢆチྍࡢࡶ↷ᑕࡋ࡚ᚓࡽࢀࡓȚ⥺ࢫ࣌ࢡࢺࣝࢆ♧ࡍࠋ38Cl, 80Br, 128I

࡜࡟᥇ྲྀࡋࡓࠋࡇࢀࡽࡢ᥇ྲྀヨᩱ࡟ࡘ࠸࡚ࠊゎ๗࡟ࡼࡗ࡚

ࡢࣆ࣮ࢡࢆ☜ㄆࡍࡿࡇ࡜ࡀ࡛ࡁࡿࠋ

⤌⧊࣭ჾᐁ࠾ࡼࡧ⾑ᾮヨᩱࢆศྲྀࡋࠊศᯒࡲ࡛Υ௨ୗᅗ  ࡟ࡣ࢝࣡࢘ᡂ⇍࢜ࢫ  ಶయࡢ⤌⧊ࠊჾᐁ࡟࠾ࡅࡿ

࡛෾⤖ಖᏑࡋࡓࠋ㹃㹍㹖ศᯒࡣࠊ᭷ᶵ⁐፹࡟ࡼࡿᢳฟᚋࠊ

㹃㹍㹖⃰ᗘࢆ♧ࡋ࡚࠸ࡿࠋ⬡⫫⤌⧊࡛⃰ᗘࡀ㧗࠸ࡢࡣࠊ㹃↓ᶵࣁࣟࢤࣥࢆ㝖ཤࡋ࣏࢚ࣜࢳࣞࣥ⟶࡟⁐ᑒࡋࡓᚋࠊ᪥ᮏ

㹍㹖ࢆᵓᡂࡍࡿ᭷ᶵࣁࣟࢤࣥ໬ྜ≀ࡀ␯Ỉᛶ࡛⬡⁐ᛶ࡟ཎᏊຊ◊✲㛤Ⓨᶵᵓ㹈㹐㹐㸫㸱ࢆ⏝࠸ࠊ㹇㹌㸿㸿ࢆ⾜ࡗᐩࡴࡇ࡜ࢆ♧၀ࡋ࡚࠸ࡿࠋ㹃㹍㹖ࢆᵓᡂࡍࡿሷ⣲ࠊ⮯⣲ཬࡓࠋ୰ᛶᏊᨺᑕ໬➼ࡢ᮲௳ࡣࠊࢻࣛ࢖࢔࢖ࢫ࡛ヨᩱࢆࡧࣚ࢘⣲ࡢ⃰ᗘ㛵ಀࡣࠊ᭷ᶵែሷ⣲ 㹃㹍㹁㹪 !᭷ᶵែ⮯෭༷ࡋࡘࡘࠊ୰ᛶᏊ᮰ᐦᗘ;QFP࣭VHF ࡛⣲ 㹃㹍㹀㹰 !᭷ᶵែࣚ࢘⣲ 㹃㹍㹇 ࢆ࿊ࡋࠊᆅẆᏑᅾᗘศ↷ᑕᚋࠊ┤ࡕ࡟ &DQEHUUD0RGHO*;6/࡜ྠࡌ㡰఩࡛࠶ࡾࠊࡇࢀࡲ᳨࡛ウࡋࡓ௚ࡢ㔝⏕⏕≀ࡸ⎔ቃ

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JAEA-Review 2013-040

ヨᩱ࡜ྠࡌഴྥࢆ♧ࡋࡓࠋࡇࡇ࡛ࠊ⬡⫫⤌⧊࡟ḟ࠸࡛⬻ࡀ⬻ࡢ⤌⧊ࡣࢺࣜࢢࣜࢭ࣮ࣟࣝ࡞࡝ࡢ୰ᛶ⬡㉁ࡢྵ㔞ࡣపࡃࠊᴟᛶ⬡⫫࡛࠶ࡿࣜࣥ⬡㉁ࡢྵ᭷㔞ࡀከ࠸ࡇ࡜ࡀ▱ࡽ㻝㻜㻜㻜㻜Counts

㻝㻜㻜㻜

128

I

80

Br

38

Cl

EOX Concentrations(Pg/g wet weight)㧗⃰ᗘ࡛࠶ࡿࡇ࡜ࡣὀ┠࡟್ࡍࡿ ᅗ  ࠋ

Specimen 1(Adult Male)
㻡㻜
㻠㻜
㻟㻜
㻞㻜
㻝㻜
㻜 MuscleBlood㻲㼍㼠㻷㼕㼐㼚㼑㼥
㻮㼞㼍㼕㼚
Liver
㻸㼡㼚㼓
㻴㼑㼍㼞㼠
㼀㼑㼟㼠㼕㼟

Tissue and Organ㻝㻜㻜Specimen 2(Adult Male)

㻝
㻝

㻞㻜㻜㻜

㻠㻜㻜㻜

㻢㻜㻜㻜

㻤㻜㻜㻜

Channel Number

Fig.1 Ț-Spectrum of Extractable Organohalogens (EOX) Determined in Fat Tissueof great cormorant.

EOX Concentrations(Pg/g wet weight)

㻝㻜

35
30
25
20
15
10
5
0 Muscle
Fat
KidneyBrain
BloodTestis
Lung
Liver
Heart

Tissue and OrganFig.2 EOX concentration in tissue andorgan.㻌
ࢀ࡚࠸ࡿࠋࡑࢀࡽࡢ⬡㉁࡟ぶ࿴ᛶࡢᙉ࠸᭷ᶵࣁࣟࢤࣥ໬ྜ
≀ࡀ⬻࡟⵳✚ࡋ࡚࠸ࡿྍ⬟ᛶࢆᮏ⤖ᯝࡣ♧၀ࡋ࡚࠸ࡿࠋ
⬻࡟ࡣ⾑ᾮ࣭⬻㛵㛛ࡀᏑᅾࡋ⏕య␗≀࡛࠶ࡿ᭷ᶵࣁࣟࢤ
ࣥ໬ྜ≀ࡣ୍⯡࡟ࡣ⾑ᾮࢆ௓ࡋࡓ⬻࡬ࡢ⛣⾜ࡣᑡ࡞࠸࡜

Blood

MuscleBrain Heart

Liver
㻌 Fat

⪃࠼ࡽࢀࡿࡀࠊᮏ⤖ᯝࡣ⬻࡬⛣⾜ࡋࡸࡍ࠸᭷ᶵࣁࣟࢤࣥ໬
ྜ≀ࡢᏑᅾࢆ♧၀ࡋ࡚࠾ࡾࠊࡑࡢ⬻࡬ࡢẘᛶᙳ㡪ࡀᠱᛕࡉࢀࡿࠋࡇࢀࡲ࡛᭷ᶵሷ⣲໬ྜ≀(DDTs, PCBs)➼ࡢ⬻࡬ࡢ⵳✚࡟㛵ࡋ࡚ࠊ⬡⫫⤌⧊࡟ẚ࡭ప࡛ࣞ࣋ࣝ࠶ࡿࡇ࡜ࡀ᫂ࡽ
࠿࡟ࡉࢀ࡚࠸ࡿࠋࡋࡓࡀࡗ࡚ࡇࢀࡽࡢ௦ㅰศゎ≀࡛ࣜࣥ⬡Lung
Kidney㉁࡜ࡢぶ࿴ᛶࢆ⋓ᚓࡋࡓᴟᛶ໬ྜ≀ࡀ⬻࡟㞟✚ࡋ࡚࠸ࡿྍ⬟ᛶࡀ⪃࠼ࡽࢀࡿࠋ⬻୰ EOX ࡢ TOCl, TOBr, TOI ⤌TestisFig.3 Distribution of EOX in tissue
and organ of Great Cormorant.

ᡂẚࡣ TOCl ࡀ᭱ࡶ኱ࡁࡃࠊྑᅗ࡟♧ࡍࡼ࠺࡟ࠊTOCl ࡜
TOBrࠊཬࡧ TOCl ࡜ TOI 㛫࡟ࡣࠊ⤌⧊࣭ჾᐁ㛫࡛ⱝᖸ␗࡞ࡿࡶࡢࡢ୍ᐃࡢ㛵ಀࡀぢࡽࢀࡓ(ᅗ 4)ࠋ

⬻࡟㞟✚ࡋ᫆࠸᭷ᶵࣁࣟࢤࣥ໬ྜ≀ࡢᏑᅾࡀ᫂ࡽ࠿࡜࡞

➽⫗ヨᩱ࡟㛵ࡋ࡚ࠊ㹃㹍㹖୰ࡢ㹃㹍㹁㹪࡜㹎㹁㹀㹱୰ࡢࡗࡓࠋࡑࡢẘᛶᙳ㡪ࡀᠱᛕࡉࢀ໬Ꮫᵓ㐀ࡢゎ᫂ࡀᮃࡲࢀࡿࠋ

㹁㹪⃰ᗘࡢ㛵ಀ࡟ࡘ࠸᳨࡚ウࡋࡓ࡜ࡇࢁࠊ㹃㹍㹁㹪⃰ᗘࡲࡓ࢝࣡࢘ヨᩱ୰ࡢ㹃㹍㹖⃰ᗘࡣࠊ௚ࡢ⏕≀࡟ẚ㍑ࡋ࡚㧗ࡀ㹎㹁㹀㹱⃰ᗘࡼࡾ  ᱆⛬ᗘ㧗ࡃࠊ㹃㹍㹁㹪⃰ᗘࡀ㧗࠸࡯⃰ᗘ࡛࠶ࡾ㹃㹍㹖࡟ࡼࡿ㔝⏕⏕≀ởᰁ◊✲࡟㛵ࡋ࡚ࠊ࢝࣡

࡝㹎㹁㹀㹱⃰ᗘࡶ㧗ࡃ࡞ࡿഴྥࢆ࿊ࡋࡓ(ᅗ 5)ࠋ࢘ࡣ⤯ዲࡢ⏕≀ヨᩱ࡜ப࠼ࠊ᪂ࡓ࡞ởᰁ≀㉁ࡢᏑᅾࡢ☜ㄆࠊ௨ୖࠊᮏ◊✲᳨࡛ウࡋࡓ࢝࣡࢘ヨᩱ࡟㛵ࡋ࡚ࠊ⬡⫫⤌⧊୰⃰ᗘ࡟༉ᩛࡍࡿ㧗⃰ᗘࡢ㹃㹍㹖ࡀ⬻⤌⧊࠿ࡽ᳨ฟࡉࢀࠊ

໬Ꮫᵓ㐀ཬࡧࡑࡢ⤥※ゎ᫂࡟኱ࡁࡃᐤ୚ࡍࡿࡶࡢ࡜⪃࠼
ࡽࢀࡿࠋ

JRR-3ࠊẼ㏦⟶↷ᑕ᪋タࠊ⎔ቃ໬Ꮫ- 261 -

4-7
㻝㻜㻥

JAEA-Review 2013-040◊✲ᡂᯝConcentrations of
EOB and EOI

0.8

Ἑ㔝බᰤ, ᳃⏣ᫀᩄ, ໭㒊໭ኴᖹὒ࡛ᤕ⋓ࡉࢀࡓࣉࣛࣥࢡ

EOCl-EOBr
0.6

ࢺࣥཬࡧ㨶㈨ᩱ୰ࡢ᭷ᶵែࣁࣟࢤࣥ(EOX)ࡢᨺᑕ໬ศᯒ,Fat Tissue

0.42008 ᪥ᮏᨺᑕ໬Ꮫ఍࣭➨ 52 ᅇᨺᑕ໬Ꮫウㄽ఍せ᪨㞟, 103,

Brain

0.2

ᗈᓥ, 9 ᭶ (2008)

EOCl-EOI

00

10

20
30
EOCl Concentration

40

Fig.4 Relationships between EOCl and
EOBr/EOI in Organ and Tissue of Great
Cormorant.

50Ἑ㔝බᰤ, Falandysz, J., ᳃⏣ᫀᩄ, ୰ᛶᏊᨺᑕ໬ἲ(INAA)࡟ࡼࡿࣂࣝࢺᾏ⏘ࢿࢬ࣑࢖ࣝ࢝୰ࡢ᭷ᶵែࣁࣟࢤ
ࣥศᯒ࡜ࡑࡢ㣵⏕≀࠿ࡽࡢ⃰⦰≉ᛶ, ➨ 45 ᅇ࢔࢖ࢯࢺ࣮
ࣉ࣭ᨺᑕ⥺◊✲Ⓨ⾲఍せ᪨㞟, 153, ᮾி, 7 ᭶ (2008)

Kawano, M., Falandysz, J., Morita, M., Instrumental
neutron activation analysis of extractableorganohalogens in marine mammal, harbour porpoise

PCB Concentration(Cl ng/g wet weight)

14
12
10
8
6
4
2
0
0

(Phocoena phocoena) and its feed, Atlantic herring(Clupea harengus), from the Baltic Sea, Journal ofRadioanalytical and Nuclear Chemistry, 278, 263-266(2008)Ἑ㔝බᰤ, ᯇ⏣᐀᫂, ୰ᛶᏊᨺᑕ໬ศᯒἲ࡟ࡼࡿ⎔ቃヨᩱ

50
100
150
200
EOCl Concentration

Fig.5 Relationships between PCBs
and EOCl Concentrations (ng/g wetweight)ࡢ ᭷ ᶵ ែ ࣁ ࣟ ࢤ ࣥ (EOX) ศ ᯒ - 㨶 㣗 ᛶ 㔝 ⏕ 㫽 㢮 ࢝ ࣡ ࢘(Phalacrocorax carbo)࠿ࡽࡢ᳨ฟ, ᖹᡂ 21 ᖺᗘཎᏊຊᶵᵓ᪋タ฼⏝୍⯡ඹྠ◊✲ᡂᯝሗ࿌఍,ᮾி኱Ꮫ኱Ꮫ㝔ᕤᏛ⣔◊✲⛉ཎᏊຊᑓᨷᮾி኱Ꮫ ᭶  㻌ᚿᒱຬ㤿, Ἑ㔝බᰤ,ᯇ⏣᐀᫂,᳃⏣ᫀᩄ, ࢝࣡࢘(Phalacrocorax carbo) ࡢ⾑ᾮࠊ⫢⮚ཬࡧ⫹ࡢ࠺㛫࡟࠾ࡅࡿỈ㓟໬ PCBs(HO-PCBs)ࡢ⵳✚≉ᛶ, ⎔ቃ໬Ꮫ, 19,
77-86 (2009)Ἑ㔝බᰤ, ᚿᒱຬ㤿, ᰵ ᣅஓ, ᯇ⏣᐀᫂, 㡲⸨᫂Ꮚ, ᳃⏣ ᫀ ᩄ , ᭷ ᶵ ែ ࣁ ࣟ ࢤ ࣥ (EOX) ࡢ ࢝ ࣡ ࢘ (Phalacrocorax
carbo)యෆ࡟࠾ࡅࡿ⤌⧊ჾᐁศᕸ㸬2009 ᪥ᮏᨺᑕ໬Ꮫ఍ᖺ
఍࣭➨ 53 ᅇᨺᑕ໬Ꮫウㄽ఍,ㅮ₇せ᪨, 75 ᮾி, 9 ᭶ (2009)Ἑ㔝බᰤ, ᚿᒱຬ㤿, ᰵ ᣅஓ, ᯇ⏣᐀᫂, 㡲⸨᫂Ꮚ, ᳃⏣ᫀᩄ, ⍇⍈†⏘࢝࣡࢘࠿ࡽ᳨ฟࡉࢀࡿ᭷ᶵែࣁࣟࢤࣥ
(EOX)࡜ሷ⣲໬ࣅࣇ࢙ࢽ࣮ࣝ(PCBs), ➨ 47 ᅇ࢔࢖ࢯࢺ࣮
ࣉ࣭ᨺᑕ⥺◊✲Ⓨ⾲఍せ᪨㞟, 154, ᮾி, 7 ᭶ (2010)

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Ἑ㔝බᰤ, ⎔ቃ໬Ꮫ◊✲ศ㔝࡟࠾ࡅࡿᨺᑕ໬ศᯒࡢ฼⏝-㔝⏕⏕≀࠿ࡽ᳨ฟࡉࢀࡿ᭷ᶵែࣁࣟࢤࣥ-,᪥ᮏᨺᑕ໬Ꮫ఍ㄅ ู෉, 11, 27 (2010)

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JAEA-Review 2013-040

4-8࣑ࣖࢥࢢࢧ✀Ꮚ୰ࡢᚤ㔞ඖ⣲㞟✚࡟㛵ࢃࡿ QTL ࡢゎᯒ
Analysis of QTL related to trace elements accumulationin seeds of Lotus japonicus⟃Ἴ኱Ꮫ ࢔࢖ࢯࢺ࣮ࣉ⥲ྜࢭࣥࢱ࣮ ྂᕝ ⣧◊✲ࡢ┠ⓗ࡜ព⩏⏝ࡋ࡚ࢲ࢖ࢬ࡛ࡶྲྀᚓࡀᐜ࡛᫆࠶ࡿࡇ࡜࠿ࡽࠊࡼ

ࣇ࢓࢖ࢺ࣓ࣞࢹ࢕࢚࣮ࢩࣙࣥࡣ᭷ᐖ㔠ᒓ࡞࡝ࡾࣂ࢖࣐࢜ࢫࡢ኱ࡁ࠸ࢲ࢖ࢬࢆ⏝࠸ࡓ⎔ቃί໬࡟ࡼࡗ࡚ởᰁࡉࢀࡓᅵተࢆᑐ㇟࡜ࡋࡓ⎔ቃί໬ࡸࢲ࢖ࢬ✀Ꮚ୰ࡢ㔠ᒓඖ⣲ྵ㔞ࡢไᚚ࡟ྥࡅࡓ

ᡭἲ࡛࠶ࡾࠊ᳜≀ࡢ㔠ᒓඖ⣲࡟ᑐࡍࡿ྾཰࣭㞟✚㔜せ࡞᝟ሗࢆ୚࠼ࡿࡶࡢ࡛࠶ࡿࠋ

⬟ຊࢆά⏝ࡍࡿࡶࡢ࡛࠶ࡿࠋ⌧ᅾ୺࡟⏝࠸ࡽࢀ࡚࠸ࡿᐈᅵἲ࡞࡝࡟ẚ࡭࡚ࠊ⎔ቃ࡬ࡢ㈇Ⲵࡀᑡ࡞ࡃ

࡝ࡢࡼ࠺࡟⾜ࡗࡓ࠿పࢥࢫࢺ࡛࠶ࡿࡇ࡜࠿ࡽὀ┠ࡉࢀ࡚࠸ࡿࠋࣇ࢓࢖

ඛ⾜◊✲࠿ࡽ࣑ࣖࢥࢢࢧࡢ୺せᐇ㦂⣔⤫࡛࠶ࢺ࣓ࣞࢹ࢕࢚࣮ࢩࣙࣥ࡟ࡼࡿ⎔ቃί໬ࢆࡼࡾຠ

ࡿ Miyakojima MG-20 ࡜ Gifu B-129㸦ᅗ 1㸧ࡢ⋡ⓗ࡟㐩ᡂࡍࡿࡓࡵ࡟ࡣࠊ᭷ᐖ㔠ᒓ࡬ࡢ⪏ᛶࠊ㧗㛫࡛ࡣࠊள㖄ࢆྵࡴ」ᩘࡢ㔠ᒓඖ⣲ࡢ㞟✚⬟ຊ࡟࠸㔠ᒓ㞟✚⬟ຊࠊࣂ࢖࣐࢜ࢫࡀ኱ࡁ࠸࡜࠸ࡗࡓ≉ᕪࡀ࠶ࡿࡇ࡜ࡀ♧ࡉࢀ࡚࠸ࡓࡓࡵࠊᮏ◊✲࡛ࡣࡇᚩࢆᣢࡗ࡚࠸ࡿ᳜≀ࢆ⏝࠸ࡿࡇ࡜ࡀᮃࡲࡋ࠸ࠋࡋ

ࢀࡽࡢ⣔⤫ࡢ஺㓄࡟ࡼࡾసᡂࡉࢀࡿ⤌᥮࠼⮬Ṫ࠿ࡋࡇࡢࡼ࠺࡞⌮᝿ⓗ࡞᳜≀ࡣࡇࢀࡲ࡛࡟ぢࡘ⣔⤫ࢆᑐ㇟࡜ࡋࡓඖ⣲㞟✚㔞ࡢゎᯒࢆ⾜ࡗࡓࠋ࠿ࡗ࡚࠾ࡽࡎࠊከࡃࡢሙྜࠊ㔜㔠ᒓ㉸㞟✚᳜≀࡜ᐃ⤖ᯝ࠿ࡽள㖄ࢆ୺࡜ࡋࡓ࣑ࣖࢥࢢࢧ✀Ꮚ୰ࡢ࿧ࡤࢀࡿ㔝⏕᳜≀ࡀ⏝࠸ࡽࢀ࡚࠸ࡿࠋ㔜㔠ᒓ㉸㞟㔠ᒓ㞟✚ࢆྖࡿ㑇ఏᏊᗙࢆ᫂ࡽ࠿࡟ࡍࡿࡇ࡜࡛

✚᳜≀ࡣ௚ࡢ᳜≀࡜ẚ㍑ࡋ࡚ 100 ಸ௨ୖࡢ㔜㔠ᒓᚤ㔞㔠ᒓඖ⣲ࡢ⵳✚࡟㛵㐃ࡍࡿ㑇ఏᏊࡢྠᐃࢆ

ࢆ⵳✚ࡍࡿ᳜≀࡛࠶ࡾࠊ⌧ᅾࡲ࡛࡟⣙ 400 ✀ࡀྠヨࡳࡓࠋ᳜≀ࡢ㔠ᒓ㞟✚ࡣ」ᩘࡢ㑇ఏᏊ࡟ࡼࡗ࡚

ᐃࡉࢀ࡚࠸ࡿࠋࡋ࠿ࡋ࡞ࡀࡽࡇࢀࡽࡢ᳜≀࡟ࡣࠊไᚚࡉࢀࠊಶࠎࡢ㑇ఏᏊࡀస⏝ࡍࡿࡇ࡜࡛┦ຍⓗࣂ࢖࣐࢜ࢫࡀ㠀ᖖ࡟ᑠࡉ࠸ࠊ⏕⫱㏿ᗘࡀ㐜࠸ࠊ⏕

࡞ᙧ㉁ࢆ♧ࡍ࡜⪃࠼ࡽࢀࡿࠋࡇࡢࡼ࠺࡞ሙྜࠊ㔠⫱᪉ἲࡀ☜❧ࡋ࡚࠸࡞࠸ࠊ࡜࠸ࡗࡓၥ㢟ࡀ࠶ࡿࡇᒓ㞟✚ࡢᙧ㉁ࢆᕥྑࡍࡿಶࠎࡢ㑇ఏᏊᗙࡣ QTL

࡜࠿ࡽࠊ⌧ᅾ࡛ࡣࣂ࢖࣐࢜ࢫࡀ኱ࡁࡃࠊ࠿ࡘ⏕⫱㸦㔞ⓗᙧ㉁㑇ఏᏊᗙ㸧࡜࿧ࡤࢀࠊQTL ࢆ᫂ࡽ࠿࡟

ἲࡀ☜❧ࡋ࡚࠸ࡿ᱂ᇵస≀࡟࠾࠸࡚᭷ᐖ㔠ᒓ⪏ࡍࡿࡇ࡜࡛ᶵ⬟ࡋ࡚࠸ࡿ㑇ఏᏊࡢᏑᅾࡍࡿ㡿ᇦᛶ࣭㞟✚⬟ຊࢆᙉ໬ࡍࡿࡇ࡜ࡀᚲせ࡛࠶ࡿ࡜⪃࠼ࢆ≉ᐃࡍࡿ QTL ゎᯒ࡜࠸࠺ᡭἲࡀᗈࡃ⏝࠸ࡽࢀࡽࢀ࡚࠸ࡿࠋࡲࡓ᱂ᇵస≀ࡣከࡃࡢሙྜ┤᥋㣗⏝

࡚࠸ࡿࠋQTL ゎᯒࢆ⾜࠺ࡓࡵ࡟ࡣࠊ㔠ᒓ⵳✚㔞࡟࡟౪ࡉࢀࡿ᳜≀࡛࠶ࡿࡇ࡜࠿ࡽࠊ㔠ᒓඖ⣲ྵ᭷㔞ᕪࡀ࠶ࡿぶࢆ஺㓄ࡋࡓᚋ௦ࡀᚲせ࡜࡞ࡿࡀࠊ࣑ࣖ

ࡢไᚚ࡟㛵ࢃࡿ㑇ఏᏊࡢྠᐃࡣࠊศᏊ࣐࣮࣮࢝ࢆ

ࢥࢢࢧࡣࢼࢩࣙࢼࣝࣂ࢖࢜ࣜࢯ࣮ࢫࣉࣟࢪ࢙ࢡ

⏝࠸ࡓ⫱✀ࡸရ✀㑅ᢤ࡟ࡶ㈉⊩ࡍࡿࡇ࡜ࡀྍ⬟ࢺ࡟࠾ࡅࡿࣂ࢖࢜ࣜࢯ࣮ࢫࡢ཰㞟࣭ಖᏑ࣭ᥦ౪ࡢ

࡛࠶ࡿࠋ≉࡟㕲ࡸள㖄࡟㛵ࡋ࡚ࡣୡ⏺ࡢᵝࠎ࡞ᆅᑐ㇟᳜≀࡛࠶ࡾࠊMiyakojima MG-20 ࡜ Gifu B-ᇦ࡛Ḟஈ⑕࡟ᝎࡲࡉࢀ࡚࠸ࡿࡇ࡜࠿ࡽࠊࡇࢀࡽࡢ
⵳✚࡟㛵㐃ࡍࡿ㑇ఏᏊࡢྠᐃࡣே㛫࡟࡜ࡗ࡚ࡶ
ᚲ㡲ඖ⣲ࡢᦤྲྀ࡜࠸ࡗࡓほⅬ࠿ࡽ኱ࡁ࡞ព⩏ࡀ࠶ࡿࠋࡑࡇ࡛ᮏ◊✲࡛ࡣศᏊ⏕≀Ꮫ࡟࠾ࡅࡿ࣐࣓⛉ ࡢ ࣔ ࢹ ࣝ ᳜ ≀ ࡛ ࠶ ࡿ ࣑ ࣖ ࢥ ࢢ ࢧ 㸦 Lotus

japonicus㸧ࢆ⏝࠸࡚ࠊ㔠ᒓ㞟✚⬟ຊ࡟㛵ࢃࡿ㑇ఏᏊࡢྠᐃࢆ┠ⓗ࡜ࡋࡓゎᯒࢆ⾜ࡗࡓࠋࡲࡓ࣑ࣖࢥ

http://www.shigen.nig.ac.jp/bean/lotusjaponicus/top/top.jsp

ᅗ 1 ࣑ࣖࢥࢢࢧ୺せᐇ㦂⣔⤫ࢢࢧ࡛ྠᐃࡉࢀࡓ㑇ఏᏊࡣࠊᰁⰍయࡢ㢮ఝᛶࢆ฼ᕥ㸸Miyakojima MG-20ࠊྑ㸸Gifu B-129

JRR-3ࠊPN-1&2ࠊᨺᑕ໬ศᯒ㸦ࣛ࢖ࣇࢧ࢖࢚ࣥࢫ㸧- 264 -

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JAEA-Review 2013-040

129 ࢆぶ࡜ࡋࡓ⤌᥮࠼⮬Ṫ⣔⤫㸦Recombinant࠿ࡿྍ⬟ᛶࡀ࠶ࡿࠋ࣐࣓⛉᳜≀࡟࠾࠸࡚ࡣࡇࢀࡲ

Inbred Lines; RILs㸧205 ⣔⤫ࡀᥦ౪ࡉࢀ࡚࠸ࡿࠋ

࡛࡟ࡶࢲ࢖ࢬ࡛ள㖄࡜࢝ࢻ࣑࣒࢘ࡢ㞟✚࡟┦㛵⤌᥮࠼⮬Ṫ⣔⤫ࡣ⣧⣔㛫㸦ࡇࡇ࡛ࡣ Miyakojimaࡀ࠶ࡿࡇ࡜ࡀሗ࿌ࡉࢀࡿ࡞࡝ࠊඹ㏻ࡢᶵᵓ࡟ࡼࡗ

MG-20 ࡜ Gifu B-129 㛫㸧ࡢ஺㓄ࢆ⾜࠸ࠊࡑࡢᏊ

࡚」ᩘࡢඖ⣲ࡀ㞟✚ࡉࢀ࡚࠸ࡿྍ⬟ᛶࡀ࠶ࡿࡇ

Ꮮ࡟ࡘ࠸࡚ಶࠎࡢ᳜≀యࡢ⮬Ṫ࡟ࡼࡿ㑇ఏᏊᆺ࡜࠿ࡽࠊᮏ◊✲࡛ࡶ௚ඖ⣲ࡢ㞟✚࡜ࡢ┦㛵࡟ࡘ࠸ࡢᅛᐃࡀ⾜ࢃࢀࡓ⣔⤫࡛࠶ࡿࠋࡇࢀࡽࡢ⣔⤫࡛ࡣࠊ࡚╔┠ࡋࡓࠋ

඲ࢤࣀ࣒ࢆ࢝ࣂ࣮ࡍࡿศᏊ࣐࣮࣮࢝࡟ࡼࡗ࡚ࠊ࡝ࡢ ⤌ ᥮ ࠼ ⮬ Ṫ ⣔ ⤫ ࡢ ࡝ ࡢ 㒊 ఩ ࡀ Miyakojima࡝ࡢࡼ࠺࡞ᡂᯝࢆᚓࡓ࠿
ᮏ

MG-20 ᆺࡢ㑇ఏᏊ࡛࠶ࡿ࠿ࠊ࠶ࡿ࠸ࡣ Gifu B-129

ᐃ ࡟ ࡼ ࡾ K-40, Fe-59, Co-60, Zn-65,

ᆺ㑇ఏᏊ࡛࠶ࡿ࠿࡜࠸ࡗࡓ㑇ఏᏊᆺ࡟ࡘ࠸࡚ࡢ

Sn-177m, Tl-208, Bi-214 ࡢ 7 ᰾✀ࡢྠ᫬᝟ሗࡀỴᐃࡉࢀ࡚࠸ࡿࠋࡲࡓࠊᥦ౪ࡉࢀࡿ⤌᥮࠼ྍ⬟࡛࠶ࡾࠊ
ࡇࡢ࠺ࡕ Miyakojima MG-20 ࡜ Gifu⮬Ṫ⣔⤫ࡢ✀Ꮚࡣࠊྠ୍ᅵተࠊྠ୍⎔ቃ࡛᥇ྲྀࡉ

B-129 ࡛㞟✚㔞࡟ᕪࡀㄆࡵࡽࢀࡓඖ⣲ࡣ Co, Zn,

ࢀ࡚࠾ࡾࠊศㆡࡉࢀࡓ✀Ꮚࢆࡑࡢࡲࡲඖ⣲㔞ࡢẚSn ࡛࠶ࡗࡓࠋCo ࡣ Miyakojima MG-20 ࡟࠾࠸㍑࡟⏝࠸࡚ࡶ㑇ఏᏊᆺ࡟ࡼࡿ⾲⌧ᆺ࡜ࡋ࡚ゎᯒ࡚ Gifu B-129 ࡢ 2.9 ಸࡢ㞟✚㔞ࡀ♧ࡉࢀࠊZn ࡜ࡍࡿࡇ࡜ࡀྍ⬟࡜࠸࠺฼Ⅼࡀ࠶ࡿࠋSn ࡛ࡣ㏫࡟ Gifu B-129 ࡟࠾࠸࡚ Miyakojimaࡇࢀࡽࡢ✀Ꮚ࡟࠾ࡅࡿ㔠ᒓඖ⣲ྵ㔞ࢆࠊ㠀◚ቯ࡛ࡢ㧗ឤᗘᐃࡀ≉ᚩ࡛࠶ࡿ୰ᛶᏊᨺᑕ໬ศᯒ

ᐃࡀ

MG-20 ࡢࡑࢀࡒࢀ 1.5 ಸࠊ1.4 ಸࡢ㞟✚㔞࡛࠶ࡗࡓ㸦ᅗ 2㸧ࠋἲ࡟ࡼࡾゎᯒࡋࡓࠋྛ⣔⤫ࡢ✀Ꮚࢆ㧗⣧ᗘ࣏࢚ࣜࢳࣞࣥ〇ࡢࢩ࣮ࢺ࡟ᑒධࡋࠊࡑࢀࡽࢆࡉࡽ࡟Ẽ㏦⟶⏝ࡢ࢔࢘ࢱ࣮࢟ࣕࣉࢭࣝෆ࡟ධࢀ࡚↷ᑕࢆ⾜ࡗࡓࠋ⣔⤫ู✀Ꮚヨᩱࡢ᭱ప㔜㔞ࡣ 20 mg㸦10ᅗ 2 Miyakojimaࣨ௨ୖࡢ✀Ꮚࢆྵࡴ㸧࡛࠶ࡾࠊ↷ᑕ᫬㛫ࡣ 17 ศ

MG-20 ࠾ࡼࡧ Gifu࡜ࡋࡓࠋ᪥ᮏཎᏊຊ◊✲㛤Ⓨᶵᵓࡢ◊✲⅔

B-129 ࡟࠾ࡅࡿ✀Ꮚ୰ࡢ

㸦JRR-3㸧࡟࠾࠸࡚୰ᛶᏊ⥺㸦୰ᛶᏊ᮰: 5.2 × 1013

㔠ᒓඖ⣲ྵ᭷㔞ẚ

neutron·cm-2·sec-1㸧ࢆ↷ᑕࡋࠊᨺᑕ໬ࡉࢀࡓヨᩱ㸦Miyakojima MG-20 ࢆ

࠿ࡽⓎࡏࡽࢀࡿ࣐࢞ࣥ⥺ࢆ Ge ༙ᑟయ᳨ฟჾࢆ⏝1 ࡜ࡋࡓ┦ᑐ㔠ᒓྵ㔞㸧࠸᳨࡚ฟࡍࡿࡇ࡜࡟ࡼࡾ㔠ᒓඖ⣲ྵ㔞ࡢᐃ㔞ࢆ
ࡇࢀࡽ 3 ඖ⣲࡟ࡘ࠸࡚ RILs ࠿ࡽ Zn ࡟ࡘ࠸࡚⾜ࡗࡓࠋᮏ◊✲࡛ᑐ㇟࡜ࡍࡿ࣑ࣖࢥࢢࢧࡢ✀Ꮚࡣሀ࠸✀⓶࡟そࢃࢀ࡚࠸ࡿࡇ࡜࠿ࡽ㓟࡟ࡼࡿศゎ43 ⣔⤫ࠊCo, Sn ࡟ࡘ࠸࡚ 29 ⣔⤫ࢆ⏝࠸ࡓ࡟ᑐࡋ࡚ᙉᅛ࡛࠶ࡾࠊ᏶඲࡟⁐ゎࡍࡿࡇ࡜ࡣᅔ㞴ࢆ⾜࠸ࠊඖ⣲㞟✚ࡢཎᅉ࡜࡞ࡿ㑇ఏᏊࡢ఩⨨᝟ሗ࡛࠶ࡿࠋࡑࡢࡓࡵ୍⯡ⓗ࡞ཎᏊ྾ගศගἲ࡞࡝࡟

ࢆᚓࡿ QTL ゎᯒࢆ⾜ࡗࡓࠋྛ⣔⤫ࡢඖ⣲ྵ㔞ࢆࡼࡿᐃ࡛ࡣṇ☜࡟ᐃ㔞࡛ࡁ࡞࠸ྍ⬟ᛶࡀ࠶ࡿࠋ

ᅗ 3 ࡟♧ࡍࠋࢯࣇࢺ࢚࢘࢔㸦j/qtl v1.2.1㸧ࢆ⏝࠸≉࡟ᚤ㔞㔠ᒓඖ⣲ࡢ⵳✚࡟㛵ࡋ࡚ࡣ✀Ꮚ୰࡛ࡢ࡚ࡑࢀࡒࢀࡢཎᅉ㑇ఏᏊࡀᗙ஌ࡋ࡚࠸ࡿྍ⬟ᛶᒁᅾ㒊఩ࡀ᫂ࡽ࠿࡛࡞࠸ࡇ࡜ࡀከ࠸ࡓࡵࠊヨᩱㄪࡢ࠶ࡿ఩⨨ࢆゎᯒࡋࡓ࡜ࡇࢁࠊࡲࡔ༑ศ࡞⢭ᗘ࡟ᩚ᫬ࡢᦆኻࢆ᭱ᑠ㝈࡟ࡍࡿࡓࡵ࡟ࡣ✀Ꮚࡑࡢࡶࡣ㐩ࡋ࡚࠸࡞࠸ࡶࡢࡢࠊZn ࡢ㞟✚࡟㛵㐃ࡍࡿ㑇ࡢ࡟ྵࡲࢀࡿ඲㔞ࢆ㠀◚ቯ࡛ᐃࡍࡿࡇ࡜ࡀᮃ

ఏᏊࡀ➨ 2 ᰁⰍయࡢ⣙ 23.6-29.1 cM ࡟ࠊCo ࡜ Snࡲࡋ࠸ࠋࡲࡓᨺᑕ໬ศᯒ࡛ࡣ╔┠ࡋ࡚࠸ࡿඖ⣲௨ࡢ㞟✚࡟㛵㐃ࡍࡿ㑇ఏᏊࡀࡑࢀࡒࢀ➨ 3 ᰁⰍయࡢእ࡟ࡶከࡃࡢඖ⣲࡟ࡘ࠸࡚ྠ୍ࢧࣥࣉ࡛ࣝ

ᐃ⣙ 55.1-70.4 cM ࡜ 82.4-89.9 cM ࡢ఩⨨࡟Ꮡᅾࡍࡍࡿࡇ࡜ࡀྍ⬟࡛࠶ࡿࡓࡵࠊᚲࡎࡋࡶពᅗࡋ࡚࠸

ࡿࡇ࡜ࡀ♧၀ࡉࢀࡓ㸦ᅗ 4㸧ࠋ࣑ࣖࢥࢢࢧࡢࢤࣀ࣒

࡞࠿ࡗࡓඖ⣲ࡢ㞟✚࡟ࡘ࠸࡚᪂ࡋ࠸஦ᐇࡀぢࡘ᝟ሗ࠿ࡽࡇࢀࡽࡢ఩⨨࡟ᗙ஌ࡍࡿ࡜⪃࠼ࡽࢀࡿ

JRR-3ࠊPN-1&2ࠊᨺᑕ໬ศᯒ㸦ࣛ࢖ࣇࢧ࢖࢚ࣥࢫ㸧- 265 -

ᐃ

4-8
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JAEA-Review 2013-040㔠ᒓ࢖࢜ࣥ㍺㏦యࢆࢥ࣮ࢻࡍࡿ㑇ఏᏊࢆ᳨⣴ࡍࡿಶయࢆ㑅ᢤࡋ࡚ 65Zn ࢆྵࡴỈ⪔ᾮ࡟⛣ࡋ᥮࠼

ࠊMTP1㸦➨ࡿ࡜ࠊHMA2㸦➨ 2 ᰁⰍయ 24.1 cM㸧ࡓࠋ2 ᪥㛫ࡢฎ⌮ࢆ⾜ࡗࡓᚋ࡟཰✭ࡋࠊᆅୖ㒊࡜

3 ᰁⰍయ 58.2 cM㸧ࠊCHX19㸦➨ 3 ᰁⰍయ 87.5 cM㸧ࠊ᰿࡟ศ๭ࡋ࡚ࡑࢀࡒࢀ࡟ྵࡲࢀࡿ 65Zn ࡢ㔞ࢆ࢞CHX28㸦➨ 3 ᰁⰍయ 88.2 cM㸧ࡀᏑᅾࡋ࡚࠸ࡓࠋ

࣐ࣥ⥺㔞࡟ࡼࡾ

≉࡟ Zn ࡢ QTL ࡜୍⮴ࡋ࡚࠸ࡿ HMA2 ࡣ✀Ꮚ࡬㒊 ࡟ ࠾ ࠸ ࡚ Miyakojima MG-20 ࡟ ẚ ࡭ Gifuࡢ㔠ᒓ㍺㏦࡟㛵୚ࡍࡿࡇ࡜ࡀ♧၀ࡉࢀ࡚࠸ࡿ㑇

B-129 ࡛⣙ 2.3 ಸࡢ Zn ྾཰ࡀㄆࡵࡽࢀࠊྠࡌࡃ

ఏᏊ࡛࠶ࡾࠊZn 㞟✚ࢆไᚚࡋ࡚࠸ࡿྍ⬟ᛶࡀ㧗

RILs ࠿ࡽ 20 ⣔⤫࡟ࡘ࠸࡚࠸࡜⪃࠼ࡽࢀࡿࠋ

ᚓࡓ࡜ࡇࢁࠊ➨ 2 ᰁⰍయࡢ⣙ 11 cM ࡢ఩⨨࡟ Zn

྾཰㏿ᗘࡢᕪ␗ࢆྖࡿ㑇ఏᏊࡀ࠶ࡿྍ⬟ᛶࡀ♧ᐃࡋࡓࠋࡇࡕࡽࡢゎᯒ࡛ࡶᆅୖ

ᐃࡋ QTL ࡢೃ⿵ࢆ၀ࡉࢀࡓ㸦ᅗ 4㸧ࠋࡇࡢ఩⨨ࡣඛࡢ✀Ꮚ࡬ࡢ Zn ⵳✚࡟㛵୚ࡍࡿ࡜⪃࠼ࡽࢀࡿ QTL ࡜ࡣ␗࡞ࡗ࡚࠾
ࡾࠊᆅୖ㒊࡬ࡢ Zn ㍺㏦࡜✀Ꮚ࡬ࡢ Zn ⵳✚ࡣ␗࡞ࡿ㑇ఏᏊ࡟ࡼࡗ࡚⊂❧࡟ไᚚࡉࢀ࡚࠸ࡿࡇ࡜
ࡀ♧၀ࡉࢀࡓࠋࡲࡓ Zn ࡜ Sn ࡣ࡜ࡶ࡟ Gifu B-129
࡛㧗࠸⵳✚ࢆ♧ࡋࡓࡀࠊQTL ࡣ␗࡞ࡗ࡚࠾ࡾࠊ⊂❧࡟ไᚚࡉࢀ࡚࠸ࡿࡶࡢ࡜⪃࠼ࡽࢀࡿࠋࡇࢀࡲ࡛
ࡢ࡜ࡇࢁྠ୍ࡢ㑇ఏᏊ࡟ࡼࡾ」ᩘࡢ㔠ᒓඖ⣲ࡢ⵳✚ࡀඹ㏻࡟ไᚚࡉࢀ࡚࠸ࡿ࡜⪃࠼ࡽࢀࡿࡼ࠺
࡞ QTL ࡣᚓࡽࢀ࡚࠸࡞࠸ࡀࠊ⣔⤫ᩘࢆቑࡸࡋࡓ
ゎᯒ࡟ࡼࡾ᪂ࡓ࡞ QTL ࡀᚓࡽࢀࡿྍ⬟ᛶࡶ࠶ࡿࡇ࡜࠿ࡽ௒ᚋࡶ╔┠ࡋ࡚࠸ࡃࠋ
ᮏ◊✲࡟ࡼࡾ≉ᐃࡉࢀࡓ QTL ࡟㔠ᒓ㍺㏦࡟㛵୚ࡍࡿ࡜⪃࠼ࡽࢀࡿ㍺㏦య㑇ఏᏊࡢᏑᅾࡀண
ࡉࢀࡓࡇ࡜࠿ࡽࠊࡑࢀࡽࡢⓎ⌧࡞ࡽࡧ࡟ᶵ⬟ゎᯒࢆ⾜࠺ࡇ࡜࡛ྛඖ⣲ࡢ㞟✚ᵝᘧࡢ㐪࠸ࡢཎᅉ࡜
࡞ࡿ㑇ఏᏊࢆ≉ᐃࡍࡿࡇ࡜ࡀྍ⬟࡟࡞ࡿࡶࡢ࡜ᅗ 3 ⤌᥮࠼⮬Ṫ⣔⤫࡟࠾ࡅࡿ Zn, Co, Sn ࡢ✀Ꮚ୰┦ᑐྵ㔞㸦Miyakojima

MG-20 ࢆ 1 ࡜ࡋࡓ┦ᑐ㔠



ᒓྵ㔞㸧

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chr.1

chr.2

chr.3

chr.4

chr.5

chr.6

ᅗ 4 ࣑ࣖࢥࢢࢧᰁⰍయୖࡢ㔠ᒓ⵳✚㛵㐃 QTL

ᡂᯝ࡟ᑐࡍࡿホ౯ᮏ◊✲࡟㛵㐃ࡋ࡚⌮໬Ꮫ◊✲ᡤࡢࢧ࢖ࢡࣟࢺ

㸦ᕥ࠿ࡽ࣑ࣖࢥࢢࢧ➨ 1㹼6 ᰁⰍయ㸧ࣟࣥ࡟ࡼࡾ〇㐀ࡉࢀࡓ 65Zn ࢆ⏝࠸ࡓࢺ࣮ࣞࢧ࣮: ᰤ㣴ᡂ㛗ᮇ Zn ྾཰㏿ᗘ㛵㐃 QTL: ✀Ꮚ୰ Zn ⵳✚㛵㐃 QTL

ᐇ㦂࡟ࡼࡾࠊ࣑ࣖࢥࢢࢧᗂ᳜≀࡟࠾ࡅࡿ⤒᰿ Zn

྾཰㏿ᗘࡢゎᯒࡶ⾜ࡗࡓࠋỈ⪔᱂ᇵ࡟ࡼࡾ⣙ 4 㐌

 : ✀Ꮚ୰ Co ⵳✚㛵㐃 QTL㛫᳜≀⫱ᡂჾࡢ୰࡛⫱ᡂࡋࠊ⏕⫱ẁ㝵ࡢᥞࡗ࡚࠸

 : ✀Ꮚ୰ Sn ⵳✚㛵㐃 QTL

JRR-3ࠊPN-1&2ࠊᨺᑕ໬ศᯒ㸦ࣛ࢖ࣇࢧ࢖࢚ࣥࢫ㸧- 266 -

4-8

㻝㻝㻠

JAEA-Review 2013-040⪃࠼࡚࠸ࡿࠋࡲࡓᨺᑕ໬ศᯒ࡛ᚓࡽࢀࡓ QTL ࡜࡛࠶ࡾࠊᰁⰍయ㛫࡟┦ྠᛶࡀ࠶ࡿࡇ࡜ࡀሗ࿌ࡉࢀ

ࢺ࣮ࣞࢧ࣮ᐇ㦂࠿ࡽᚓࡽࢀࡓ QTL ࡀ␗࡞ࡗ࡚࠸

࡚࠸ࡿࠋ࣑ࣖࢥࢢࢧ࡛ᚓࡽࢀࡓ QTL ᝟ሗ࠿ࡽࢲ

ࡿࡇ࡜࠿ࡽࠊ ᐃᑐ㇟࡜ࡍࡿᡂ㛗ẁ㝵ࡸ⤌⧊ࠊ࠶࢖ࢬࡢᰁⰍయ࡛㛵㐃㑇ఏᏊࡀᗙ஌ࡋ࡚࠸ࡿ࡜⪃ࡿ࠸ࡣඖ⣲ࡢ⥲㔞࡛࠶ࡿ࠿྾཰㏿ᗘ࡛࠶ࡿ࠿࡜

࠼ࡽࢀࡿ㒊఩ࢆ᥎ᐃࡋࠊࢲ࢖ࢬ࡟࠾ࡅࡿ✀Ꮚ୰ࡢ࠸ࡗࡓほⅬࡀ␗࡞ࡗࡓゎᯒࢆ⾜࠺ࡇ࡜࡛ࠊྠ୍ඖ

㔠ᒓ㞟✚ࡶྠᵝ࡟ไᚚࡉࢀ࡚࠸ࡿ࠿᳨ドࡍࡿࠋࢲ⣲ࡢ㞟✚࡛ࡶရ✀㛫ᕪࡢཎᅉ࡜࡞ࡿ㑇ఏᏊࡀ␗࢖ࢬ࡟࠾࠸࡚ࡣ⤌᥮࠼⮬Ṫ⣔⤫ࡀ」ᩘᩚഛࡉࢀ

࡞ࡿࡇ࡜ࡀ♧၀ࡉࢀࡓࠋࡇࡢࡇ࡜࠿ࡽ༢⣧࡞ᆅୖ࡚ ࠸ ࡿ ࡇ ࡜࠿ ࡽ ஺ 㓄 ࡟⏝ ࠸ ࡓ ぶ ᰴࡢ ⾲ ⌧ ᆺ ࡀ㒊࡬ࡢ㔠ᒓ㍺㏦ࡢไᚚࡢࡳ࡛ࡣ✀Ꮚࡸྍ㣗㒊ࡢ

Miyakojima MG-20 ࡜ Gifu B-129 ࡜㢮ఝ࡞⤌ࡳ㔠ᒓྵ㔞ࢆไᚚฟ᮶࡞࠸ࡇ࡜ࢆ♧ࡋ࡚࠾ࡾࠊಶࠎ

ྜࢃࡏࢆ㑅ࢇ࡛ゎᯒࢆ⾜࠺ࠋࡢᙺ๭ࢆᢸ࠺㑇ఏᏊࢆྠᐃࡋࠊࡑࢀࡒࢀࡢ㑇ఏᏊࡢᶵ⬟ࢆヲ⣽࡟᳨ドࡍࡿᚲせࡀ࠶ࡿࡇ࡜ࢆ♧ࡋᡂᯝࡢබ⾲࡚࠸ࡿࠋᮏ◊✲࡟ࡼࡾࡑࢀࡽࡢᑐ㇟࡜࡞ࡿ㑇ఏᏊᏛ఍Ⓨ⾲➼ࡢೃ⿵ࢆ」ᩘᚓࡿࡇ࡜ࡀ࡛ࡁࡓࠋ

㸯㸧ྛ✀ᨺᑕ⥺ィᡭἲࢆ⏝࠸ࡓ࣑ࣖࢥࢢࢧ࡟࠾

ࡅࡿ㔠ᒓ㞟✚ᶵᵓࡢゎᯒྂᕝ⣧ 1ࠊ▼ᮏග᠇ 2ࠊబ⸨ᚸ 1௒ᚋࡢ᪉㔪ࡇࢀࡲ࡛ࡢゎᯒ࠿ࡽࠊZn, Co, Sn ࡢ㞟✚࡟㛵㐃

1 ⟃Ἴ኱࣭⏕࿨⎔ቃ, 2 ᮾி኱࣭ᕤᏛ⣔ཎᏊຊ

ࡍࡿ QTL ࡀᚓࡽࢀ࡚࠸ࡿࠋࡋ࠿ࡋ࡞ࡀࡽ≉ᐃࡉ᪥ᮏ࢔࢖ࢯࢺ࣮ࣉ༠఍࣮࢜ࢱ࣒ࢫࢡ࣮ࣝ

ࢀࡓ㡿ᇦࡀࡲࡔᗈ⠊ᅖ࡟ࢃࡓࡿࡓࡵࠊ㔠ᒓ㞟✚ࢆ㸦㔝⏣ᕷࠊᖹᡂ 21 ᖺ 10 ᭶ 31 ᪥㸧ไᚚࡍࡿ㑇ఏᏊࢆྠᐃࡍࡿ࡟⮳ࡗ࡚࠸࡞࠸ࠋ⥅⥆ࡋ࡚⤌᥮࠼⮬Ṫ⣔⤫ࡢゎᯒࢆ㐍ࡵࡿࡇ࡜࡟ࡼࡾࠊ

㸰㸧Quantitative trait locus analysis for seedࡑࢀࡒࢀࡢᰁⰍయୖࡢ㔠ᒓ㞟✚㛵㐃 QTL ࡢ㡿ᇦzinc accumulation in model legume, Lotusࢆ⊃ࡵࠊ⢭ᗘࢆ㧗ࡵ࡚࠸ࡃࠋࡲࡓ QTL ゎᯒࡣ」japonicusᩘࡢ㑇ఏᏊᗙࡀ㛵୚ࡍࡿሙྜࢆ᝿ᐃࡋࡓゎᯒ࡛ྂᕝ⣧ 1ࠊ▼ᮏග᠇ 2ࠊబ⸨ᚸ 1࠶ࡿࡀࠊᚓࡽࢀࡓ QTL ࡣ Zn, Co, Sn ࡑࢀࡒࢀ࡟

1 ⟃Ἴ኱࣭⏕࿨⎔ቃ, 2 ᮾ኱࣭ᕤᏛ⣔ཎᏊຊࡘ࠸࡚༢⊂࡛࠶ࡿࠋࡇࢀࡣゎᯒ࡟⏝࠸ࡓ⣔⤫ᩘࡀ

Asia-Pacific Symposium on Radiochemistry '09ᑡ࡞࠸ࡇ࡜࡛⤫ィୖ᭷ព࡟ྠᐃࡉࢀࡿ QTL ࡀᑡ㸦⡿ᅜ࣭Napaࠊᖹᡂ 21 ᖺ 12 ᭶ 1 ᪥㸧࡞࠸ࡓࡵ࡛࠶ࡾࠊ⣔⤫ᩘࢆቑࡸࡋ࡚࠸ࡃࡇ࡜࡛᪂

4-8

ࡓ࡞ QTL ࡀᚓࡽࢀࡿࡶࡢ࡜⪃࠼࡚࠸ࡿࠋࡇࢀࡲ
࡛ Ge ༙ᑟయ᳨ฟჾࡢ༨᭷ྍ⬟᫬㛫ࡀ୺࡞ᚊ㏿せᅉ࡜࡞ࡗ࡚࠸ࡓࡀࠊᖹᡂ㸰㸰ᖺᗘ࡟⟃Ἴ኱Ꮫ࡟࠾
ࡅࡿ Ge ༙ᑟయ᳨ฟჾࡢᩚഛࡀ㐍ࡴணᐃ࡛࠶ࡿࡇ
࡜࠿ࡽࠊࡼࡾ୍ᒙࡢゎᯒ⣔⤫ᩘࡢ☜ಖࡀྍ⬟࡟࡞ࡿࡶࡢ࡜⪃࠼ࡿࠋࡇࢀ࡟ࡼࡾ࣑ࣖࢥࢢࢧࡢࢼࢩࣙ
ࢼࣝࣂ࢖࢜ࣜࢯ࣮ࢫࣉࣟࢪ࢙ࢡࢺ࡟࠾࠸࡚⏝ពࡉࢀ࡚࠸ࡿ 205 ⣔⤫ࡢ࠺ࡕධᡭྍ⬟࡞⣔⤫ࢆ඲࡚ゎᯒࡍࡿࡇ࡜࡛ࠊࡼࡾ㧗⢭ᗘ࡞ QTL ゎᯒࢆ⾜࠺ࡇ࡜࡜ࡍࡿࠋࡲࡓ㔠ᒓ㞟✚㛵㐃 QTL ࢆ⊃ࡵࡿࡓࡵࡢᐃࢆ⥅⥆ࡋ࡞ࡀࡽࠊᚓࡽࢀࡓ QTL ࡢ᝟ሗ࠿ࡽࢲ࢖ࢬ✀Ꮚ࡟࠾ࡅࡿ㔠ᒓ㞟✚࡟ࡘ࠸࡚ゎᯒࢆ⾜࠺ࠋ࣑ࣖࢥࢢࢧ࡜ࢲ࢖ࢬࡣྠࡌ࣐࣓⛉ࡢ᳜≀
JRR-3ࠊPN-1&2ࠊᨺᑕ໬ศᯒ㸦ࣛ࢖ࣇࢧ࢖࢚ࣥࢫ㸧- 267 -

㻝㻝㻡

JAEA-Review 2013-040

4-9ࢹ࢕࣮ࢮࣝ᤼Ẽ⢏Ꮚ '(3 ࡟ྵࡲࢀࡿᚤ㔞㔠ᒓࡢศᯒ࡜⏕యᙳ㡪࡟㛵ࡍࡿ◊✲
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㸦S13㸧ࠊ㸰࣓ࢳࣝࢽࢺࣟࣇ࢙ࣀ࣮ࣝ 01
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㏆ᖺࠊ'(3ࡢ೺ᗣᙳ㡪≀㈨࡜ࡋ࡚ࠊ࢞ࢫ࠶ࡿ࠸
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ࢺࣥࢿࣝ㸦┤ᚄFP㸧࡟ᑟධࡋࠊΎί✵Ẽ࡛ಸᕼ㔘ࡋࡓࡢࡕࠊᴫࡡࠊΥ࡟ಖࡓࢀࡓᕼ㔘ࢺࣥࢿࣝෆࢆPPLQࡢὶ㔞࡛ὶࡋࡓࠋ⢏Ꮚ

-557ࣃ࢖ࣉ ᨺᑕ໬ศᯒ㸦⎔ቃ㸧

- 268 -

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JAEA-Review 2013-040࢖ࣥࢪ࣒࢘ ,QP ࣄ⣲ 
㸦$V㸧࣐ࣥ࢞ࣥ 
㸦0Q㸧࣐ࢢࢿࢩ࣒࢘
㸦0J㸧ࢡ࣒ࣟ 
㸦&U㸧㕲 )H ள㖄 =Q ࢥࣂࣝࢺ 
&R ≧≀㉁ࡣᕼ㔘ࢺࣥࢿࣝෆ࡛ỿ╔ࠊᤕ㞟ࡋࡓࠋᤕ㞟ࡋࡓ⢏Ꮚ≧≀㉁ ࡟⇕୰ᛶᏊࢆ↷ᑕࡋࠊᨺᑕ

໬ࢆ⾜ࡗࡓࠋ࡞࠾ࠊᨺᑕ໬ࡣ᪥ᮏཎᏊຊ◊✲㛤ⓎᶵᵓཎᏊຊ⛉Ꮫ◊✲ᡤ࡛⾜ࡗࡓࠋᨺᑕ໬
ࡉࢀࡓヨᩱ୰ࡢ ࢖ࣥࢪ࣒࢘ ,QP ࠊࣄ⣲㸦$V㸧ࠊ࣐ࣥ࢞ࣥ㸦0Q㸧ࠊ࣐ࢢࢿࢩ࣒࢘
㸦0J㸧ࠊࢡ࣒ࣟ㸦&U㸧ࠊ㕲 )H ࠊள
㖄 =Q ࠊࢥࣂࣝࢺ &R ࢆGe༙ᑟయ᳨ฟ⿦⨨㸦SEIKO EG&G♫〇㸧࡛ᐃ㔞ࡋࡓࠋ㸱㸬⤖ᯝ
'(3࡟ྵࡲࢀ࡚࠸ࡿ㔠ᒓඖ⣲㔜㔞ࢆ7DEOHࠊ࢚ࣥࢪࣥ࢜࢖ࣝ࡟ྵࡲࢀ࡚࠸ࡿ㔠ᒓඖ⣲㔜㔞ࢆ7

1'



1'

1'













1'

1'





1'



DEOH࡟♧ࡍࠋ
7DEOH '(3             㔜㔞ȣJ

Table 3࡟♧ࡋࡓࡼ࠺࡟ࠊDEP୰࠿ࡽࡣࣄ⣲ࠊ࣐↷ᑕ᪋タ㸸᪥ᮏཎᏊຊ◊✲㛤ⓎᶵᵓෆཎᏊ⅔ ྕ⅔↷ᑕ᪥㸸ᖹᡂᖺ᭶᪥
୰ᛶᏊ↷ᑕ᫬㛫ศ↷ᑕ ཪࡣศ↷ᑕ  
ヨᩱ㸦'(3㸧ࡢ㔜ࡉ㸸㹥 ࣥ ࢞ࣥ ࠊ࣐ࢢ ࢿࢩ ࣒࢘ࠊ ࢡࣟ ࣒ࠊ㕲 ࠊள 㖄ࠊࢥ

'(3ࡢ᥇ྲྀᖺ᭶᪥
㔠ᒓඖ⣲+ + + + ࢖ࣥࢪ࣒࢘ 
1'
1'
1'
1'
,QP 
ࣄ⣲ 




㸦$V㸧࣐ࣥ࢞ࣥ 




㸦0Q㸧࣐ࢢࢿࢩ࣒࢘    
㸦0J㸧ࢡ࣒ࣟ    
㸦&U㸧㕲  
1'

)H ள㖄    
=Q ࢥࣂࣝࢺ 




&R ࡚࠸ࡓ࣐ࣥ࢞ࣥࠊ࣐ࢢࢿࢩ࣒࢘ࠊࢡ࣒ࣟࠊள㖄ࠊ


7DEOH ࢚ࣥࢪࣥ࢜࢖ࣝ  㔜㔞ȣJ ࣂ ࣝࢺ ࡀ᳨ฟ ࡉࢀ ࡓࠋ୍ ᪉౑ ⏝ᚋࡢ ࢚ࣥ ࢪࣥ࢜
࢖ࣝ࡟ࡣTable 4࡟♧ࡋࡓࡼ࠺࡟DEP୰࡟ྵࡲࢀࢥ ࣂࣝ ࢺࡢ࡯ ࠿࡟ ࢖ࣥࢪ ࣒࢘ ࡀ᳨ฟ ࡉࢀ ࡓࠋࡇࡢ ࠺ࡕ ࢖ࣥࢪ ࣒࢘ ࡜ࢥࣂ ࣝࢺ ࢆ㝖ࡃ ࡜࠸ ࡎࢀࡶ౑ ⏝๓ ࡢ࢚ࣥ ࢪࣥ ࡢ࢜࢖ ࣝ࡟ ྵࡲࢀ ࡚࠸ ࡿࡶࡢ࡛ ࠶ࡗ ࡓࠋࡑ ࢀ࡟ ᑐࡋࣄ ⣲ࡣ ౑⏝๓ ࠊ౑ ⏝ᚋ࠸ࡎࢀࡢ࢚ࣥࢪࣥ࢜࢖ࣝ࠿ࡽࡶ᳨ฟࡉࢀ࡞࠿ࡗࡓࠋ
'(3࡟ྵࡲࢀ࡚࠸ࡓࣄ⣲ࡣࠊ᤼ฟᇶ‽್ࡀపࡃࠊ೺ ᗣ㞀 ᐖ࡬ࡢ ᙳ㡪 ࡶ኱ࡁ ࠸ࡢ ࡛ࠊ⎔ ቃ୰ ࡟᤼ฟࡍ ࡿࡇ ࡜ࢆᴟ ຊῶ ࡽࡍࡇ ࡜ࡀ ồࡵࡽ ࢀ࡚ ࠸ࡿ㔠ᒓ࡛࠶ࡿࠋࡇࢀࡽࡢ⤖ᯝࡣࠊ'(3ࡢ⏕యᙳ㡪࡟㛵ࡍ ࡿ◊ ✲ࡣ᭷ ᶵศ Ꮚ࡟ࡘ ࠸࡚ ࡢࡳ࡞ ࡽࡎ ࠊᚤ㔞㔠 ᒓ࡟ ࡘ࠸࡚ ࡶ࡞ ࡉࢀࡿ ᚲせ ࡀ࠶ࡿ ࡇ࡜ ࢆ♧ࡋ
࡚࠸ࡿࠋ

ཧ⪃ᩥ⊩
㻝㻕

↷ᑕ᪋タ㸸᪥ᮏཎᏊຊ◊✲㛤ⓎᶵᵓෆཎᏊ⅔ ྕ⅔↷ᑕ᪥㸸ᖹᡂᖺ᭶᪥
୰ᛶᏊ↷ᑕ᫬㛫⛊↷ᑕ ཪࡣཬࡧศ↷ᑕ  ヨᩱ㸦࢚ࣥࢪࣥ࢜࢖ࣝ㸧ࡢᐜ㔞㸸PO 㼑㼒㼒㼕㼏㼕㼑㼚㼠㻌 㼟㼑㼜㼍㼞㼍㼠㼕㼛㼚㻌 㼙㼑㼠㼔㼛㼐㻌 㼒㼛㼞㻌 㼏㼔㼑㼙㼕㼏㼍㼘㼟㻌 㼕㼚㻌㼐㼕㼑㼟㼑㼘㻌 㼑㼤㼔㼍㼡㼟㼠㻌 㼜㼍㼞㼠㼕㼏㼘㼑㼟㻦㻌 㼍㼚㼍㼘㼥㼟㼕㼟㻌 㼒㼛㼞㻌 㼚㼕㼠㼞㼛㻙㻌㼜㼔㼑㼚㼛㼘㼟㻘㻌 㻱㻿㻼㻾㻌 㻔㻱㼚㼢㼕㼞㼛㼚㼙㼑㼚㼠㼍㼘㻌 㻿㼏㼕㼑㼚㼏㼑㻌 㼍㼚㼐㻌 㻌㻼㼛㼘㼘㼡㼠㼕㼛㼚㻌 㻾㼑㼟㼑㼍㼞㼏㼔㻕㻘㻌 㻝㻡㻌 㻔㻠㻕㻘㻟㻝㻤㻙㻟㻞㻝㻌 㻘㻞㻜㻜㻤㻌࢚ࣥࢪࣥ࢜࢖ࣝࡢ≧ែ
㔠ᒓඖ⣲
౑⏝๓

㼅㻌 㻺㼛㼥㼍㻘㻌 㻷㻌 㻿㼑㼗㼕㻘㻌 㼑㼠㻌 㼍㼘㻚㻘㻌 㻵㼙㼜㼞㼛㼢㼑㼙㼑㼚㼠㻌 㼛㼒㻌 㼍㼚㻌 㻌

4-9

౑⏝ᚋ

- 269 -

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JAEA-Review 2013-040

4-10࢞ࣥࢪࢫᕝὶᇦࡢࣄ⣲ởᰁᆅᇦࡢᅵተ୰ࡢࣄ⣲ศᯒᐑᓮ኱Ꮫ⏘Ꮫ㐃ᦠࢭࣥࢱ࣮ ⏣㎶ බᏊ㸦㸯㸧◊✲ࡢ┠ⓗ࡜ព⩏ ୍᪉ࠊᐑᓮ኱Ꮫࢢ࣮ࣝࣉࡣࡇࢀࡲ࡛ᐑᓮ┴ᅵ࿅㏆ᖺࠊ࢞ࣥࢪࢫᕝࢆࡣࡌࡵ࡜ࡍࡿ኱Ἑὶᇦ࡛ࡢ

ஂ㖔ᒣ࠿ࡽࡢὶฟࡍࡿࣄ⣲⿕ᐖࡢㄪᰝ࠾ࡼࡧᝈ

ᆅୗỈࣄ⣲ởᰁࡀ኱ࡁ࡞♫఍ၥ㢟࡜࡞ࡗ࡚࠸ࡿࠋ

⪅ࡢᨭ᥼࡟ྲྀࡾ⤌ࡳࠊゎỴ࡟㈉⊩ࡋ࡚ࡁࡓࠋࡇࡢ

➨஧ḟ኱ᡓࡲ࡛ࡣࠊᕝࡸ⁀ụ࡞࡝ࡢᆅ⾲Ỉࢆ㣧ᩱ▱㆑࡜⤒㦂ࢆ⏕࠿ࡋ࡚  ᖺࡼࡾ࢞ࣥࢪࢫᕝὶỈ ࡜ ࡋ ࡚ ࠸ࡓ ఫ Ẹ ࡀ ࠊಖ ೺ ⾨ ⏕ ୖࡢ ⌮ ⏤ ➼ ࡛ᇦ㸦ࣂࣥࢢࣛࢹࢩࣗࠊࢿࣃ࣮ࣝࠊ࢖ࣥࢻ࡞࡝㸧ࡢ

81,&() ࡟ࡼࡗ࡚᥀๐ࡉࢀࡓ஭ᡞࢆ฼⏝ࡋࠊ㣧ᩱỈࣄ⣲ởᰁᆅᇦ࡟࠾࠸࡚ࠊྛ✀ㄪᰝ◊✲ࢆ⾜ࡗ࡚ࡁࡢ኱㒊ศࢆ஭ᡞỈ࡛㈥࠺ࡼ࠺࡟࡞ࡗࡓࠋࡋ࠿ࡋࠊ

ࡓࠋࡇࢀࡲ࡛࡟ࠊࣂࣥࢢࣛࢹࢩࣗࠊࢪ࢙ࢯ࣮ࣝ┴ࡑࡢ஭ᡞỈࡀࣄ⣲࡟ࡼࡗ࡚ởᰁࡉࢀ࡚࠾ࡾࠊࡇࢀ

࡟࠾࠸࡚ࠊࣄ⣲ࡢ⁐ฟࡀᆅୗỈὶࡢᆅᒙ୰࡛ࡢ㑏ࢆ㣧ᩱỈ࡜ࡋࡓఫẸࡢ೺ᗣࡀᐖࡉࢀࠊ៏ᛶࣄ⣲୰ඖ≧ែ࡛⏕ࡌ࡚࠸ࡿࡇ࡜ࢆ᫂ࡽ࠿࡟ࡋࡓࠋࡲࡓࠊ

ẘᝈ⪅ࢆⓎ⏕ࡉࡏࠊ⓶⭵㞀ᐖࠊෆ⮚㞀ᐖࠊᝏᛶ⭘ࡑࡢ⁐ฟᶵᵓࢆ㏫࡟฼⏝ࡋࡓ⡆᫆ࣄ⣲㝖ཤ⿦⨨⒆➼ࡢ㞀ᐖࢆᘬࡁ㉳ࡇࡋ࡚࠸ࡿࠋࡲࡓࡑࡢࣄ⣲ࡢࡢ㛤Ⓨࢆ⾜࠸ࠊ⌧ᅾࠊࣂࣥࢢࣛࢹࢩ࡛ࣗ⣙  ᇶ㉳※ࡣࣄ࣐ࣛࣖᒣ⬦࡞࡝࡛ࡢ୰ୡ௦ᚋᮇࡢ㐀ᒣࡀ✌ືࡋ࡚࠸ࡿࠋ୍᫖ᖺᗘ࠿ࡽࡣ -,&$ ࡜ඹྠ࡛ࠊ

㐠ື࡟ࡼࡗ࡚ᄇࡁฟࡓ࣐ࢢ࣐୰ࡢࣄ⣲ࡀ㢼໬ࡋ࢖ࣥࢻࠊ࢘ࢵࢱࣛࣉࣛࢹࢩࣗᕞ࡟࠾࠸࡚ࠊㄪᰝ◊࡚኱Ἑ࡟ࡼࡗ࡚㐠ࡤࢀ࡚୰࣭ୗὶᇦ࡟ሁ✚ࡋࡓࡇ✲ࢆ⾜ࡗ࡚࠸ࡿࠋ

࡜࡟⏤᮶ࡋࠊࡉࡽ࡟ఱࡽ࠿ࡢᶵᵓ࡟ࡼࡗ࡚ᅵተ୰

ࡑࡇ࡛ᮏ◊✲ࡣୖグㄪᰝ◊✲ࡢ୍⎔࡜ࡋ࡚ᆅࡢࣄ⣲ࡀᆅୗỈ࡟⁐ฟࡋᆅୗỈ◉⣲ởᰁࡀⓎ⏕ୗỈࣄ⣲ởᰁㄪᰝ࡜ྜࢃࡏ࡚ㄪᰝᆅᇦࡢ࣮࣎ࣜ

ࡋࡓ࡜⪃࠼ࡽࢀ࡚࠸ࡿࠋࡑࢀࡺ࠼ᆅୗỈ◉⣲ởᰁࣥࢢ࡞࡝࡟ࡼࡗ࡚ᅵተヨᩱࢆ᥇ྲྀࡋ࡚ᅵተ୰ࡢ

ࡣࣄ࣐ࣛࣖᒣ⬦࡞࡝ࢆ※ὶ࡜ࡍࡿ࢞ࣥࢪࢫᕝࡸ

ࣄ⣲ྵ᭷㔞ศᯒࢆ⤌⧊ⓗ࡟⾜࠺ࡇ࡜ࢆ┠ⓗ࡜ࡍ㯤Ἑ࡞࡝ࡢ࢔ࢪ࢔ࡢ኱Ἑὶᇦࡢᗈ⠊ᅖ࡟ඹ㏻ࡋ

ࡿࠋࡇࢀࡽࢆ㏻ࡌ࡚ᆅ㉁ᒙᗎࢆ▱ࡾࠊࡉࡽ࡟⁐ฟࡓၥ㢟࡜࡞ࡗ࡚࠸ࡿࠋࡉࡽ࡟ࡑࢀࡽࡢᆅᇦࡢከࡃ

ᶵᵓࡢゎ᫂ࠊࡉࡽ࡟ᆅୗỈ◉⣲ởᰁ࡬ࡢᑐ⟇࡟㈉ࡣⓎᒎ㏵ୖᅜ࡛࠶ࡾࠊ⮬ᅜ࡛ࡢゎỴࡀ኱ኚ㞴ࡋ࠸⊩ࡍࡿ஦ࢆᮇᚅࡍࡿࠋᮏ◊✲ࡣࠊᏛ⾡ⓗ࡞◊✲ࡢ≧ἣ࡟࠶ࡿࠋᅗ  ࡟࢔ࢪ࢔ᆅᇦࡢࣄ⣲ởᰁᆅᅗࢆព㆟࡟ຍ࠼࡚ࠊ೺ᗣ⿕ᐖࡢཎᅉゎ᫂࡟ࡼࡿே࿨ᩆ

♧ࡍࠋຓ࡬ࡢ㈉⊩ࠊᅜ㝿㈉⊩࡞࡝ࡢព㆟ࡀ࠶ࡿࠋ
㸦㸰㸧◊✲᪉ἲᖹᡂ  ᖺ  ᭶࡟◊✲༠ຊ⪅ࡢ℩ᓮࡽࡀ -,&$
࡜ඹྠࡋ࡚࢞ࣥࢪࢫᕝὶᇦࡢ࢖ࣥࢻᅜ࢘ࢵࢱࣝ
ࣉࣛࢹࢩࣗᕞࣂࣛ࢖ࢳ┴ࢸࢪࣗ࣡ࣉࣝ㒆ࢳ࢙ࢺࣛᮧ࡟࠾࠸࡚ 㹼P ῝ࡉࡲ࡛ࡢ࣮࣎ࣜࣥࢢࢆ ⟠ᡤ⾜࠸ࠊᩘⓒࢧࣥࣉࣝࡢᅵተࢆ᥇ྲྀࡋࠊ᪥ᮏ
ᅜෆ࡟ᣢࡕᖐࡗࡓࠋᅗ  ࡟࣮࣎ࣜࣥࢢㄪᰝࡢᵝᏊࢆ♧ࡍࠋᖹᡂ  ᖺ࡟ࡇࢀࡽ᥇ྲྀᅵተヨᩱ࡟ࡘ࠸࡚ࣄ⣲ྵ᭷㔞ศᯒࢆ⾜ࡗࡓࠋࣄ⣲ྵ᭷㔞ศᯒࡣཎᅗ  ࢔ࢪ࢔ࡢࣄ⣲ởᰁᆅᅗᏊຊ⛉Ꮫ◊✲ᡤ -35 ࡢ 31 Ẽ㏦⟶↷ᑕࢆ⏝࠸㸦Ꮠࡣㄞࡵ࡞࠸ࡀࠊᅗ࠿ࡽࣄ⣲ศᕸࢆㄞࡳྲྀࡗ࡚

࡚⾜࠸ࠊࡲࡓᐑᓮ኱Ꮫ࡟࠾࠸࡚୪⾜ࡋ࡚㓟ศゎ࡟㡬ࡅࡿ࡜ᮇᚅࡍࡿࠋ࡞࠾ࠊᅗࡣ࢔ࢪ࢔◉⣲ࢿࢵࢺࡼࡿฎ⌮ᚋཎᏊ྾ගศගගᗘィࢆ⏝࠸ࡓ໬Ꮫⓗ࣮࣡ࢡࡢసᡂࠋ㸧࡞ศᯒࢆ⾜࠸ࠊࡇࢀࡽࡢ⤖ᯝࡢẚ㍑᳨ウࢆ⾜ࡗࡓࠋ
JRR-3ࠊẼ㏦⟶↷ᑕ⿦⨨㸦31㸧ࠊᨺᑕ໬ศᯒ㸦⎔ቃヨᩱ㸧- 270 -

㻝㻝㻤

JAEA-Review 2013-040ࡀ࠶ࡾࠊ≉ู࡛ࡣ࡞࠸ࡀࡑࢀ࡞ࡾࡢ๓⾜⛬ࡣᚲせ࡛࠶ࡿࠋࡔࡀఱࡼࡾ୰ᛶᏊᨺᑕ໬ศᯒ࡛ࡣヨᩱ୰ࡢᐃྵ᭷ඖ⣲ࡢ⤯ᑐ㔞ࢆ᭕᫕ࡉ࡞ࡃ≀⌮ⓗ࡟ᐃ࡛ࡁࡿⅬࡣศᯒᡭἲ࡜ࡋ࡚⤯ᑐⓗᙉࡳ࡛࠶ࡿࠋࡓࡔ㏫࡟

ᐃᑐ㇟ࡢ໬Ꮫᙧែࢆ඲ࡃ༊ู࡛ࡁ

࡞࠸Ⅼࡣ୙฼࡞Ⅼ࡛࠶ࡿࠋ໬Ꮫᙧែ࡟ࡘ࠸࡚ࡣࡸ
ࡣࡾ໬Ꮫⓗศᯒࢆᚲせ࡜ࡋࠊ୧⪅ࡢ┦⿵ⓗ࡞ᐃࡀᚲせ࡜ゝ࠼ࡿࠋ ⥆࠸࡚௒ᅇࡢ

ᐃヨᩱసᡂࡢᡭ⥆ࡁࢆㄝ᫂ࡍ

ࡿࠋ௒ᅇ࣮࣎ࣜࣥࢢࡋࡓᅵተヨᩱࡣ኱㒊ศࡀ◁≧࡛࠶ࡾࠊᆅ㠃࠿ࡽᘬࡁᢤࡃ㝿࡟࠶ࡩࢀฟࡿᆅୗỈ࡟ゐࢀ࡞ࡀࡽ᥇ྲྀࡍࡿᙧ࡜࡞ࡗࡓࡢ࡛ࠊ࠸ࡎࢀࡢ
῝ᗘࡢᅵተヨᩱࡶྠࡌᆅୗỈ࡟ᾐࡗ࡚࠸ࡿࠋࡑࡇ
࡛ᅵተヨᩱࢆ⵨␃Ỉࢆ⏝࠸࡚Ὑίࡋࠊℐ㐣ࡉࢀ࡚ฟ࡚ࡃࡿỈࡢⰍࡀ༑ศ࡟㏱᫂࡟࡞ࡿࡲ࡛⧞ࡾ㏉ࡋࡓࠋࡇࢀࢆྛヨᩱẖ࡟஝⇱ࠊィ㔞ࡢᚋࠊ୙⣧≀ࢆྵࡲ࡞࠸㧗⣧ᗘ࣏࢚ࣜࢳࣞࣥࢩ࣮ࢺࢆ࣏ࣜࢩ
࣮࣮࡛ࣛຍᕤࡋࡓ⿄࡟  㔜࡟ᑒධࡋࡓࠋ᭱ࡶእഃࡢ⿄ࡣཎᏊ⅔࡛ࡢ୰ᛶᏊ↷ᑕࡢᚋ࡟㛤ᑒࡋู࡚ࡢ⿄࡜ྲྀࡾ᭰࠼ࡿࡀࠊෆഃࡢ  㔜ࡢ⿄ࡣ᭱ᚋࡲ࡛ᅗ  ࢳ࢙ࢺࣛᮧ࡛ࡢ࣮࣎ࣜࣥࢢㄪᰝࡢᵝᏊᐦᑒࡋࡓࡲࡲ࡜ࡍࡿࠋ࡞࠾  㔜┠ࡢ⿄ࡣࠊ 㔜┠ࡢ⿄ࡀ௬࡟ṧᏑỈᡂศࡢ⭾ᙇ࡟ࡼࡗ࡚㉳ࡇࡗࡓ࡞࠾ࠊᐑᓮ኱Ꮫ࡛ࡣࡇࢀࡲ࡛ୖグࡢ໬Ꮫⓗศᯒ࡜ࡋ࡚ࡶヨᩱࡀእ࡟ฟ࡞࠸ࡓࡵࡢಖ㝤࡛࠶ࡿࠋᖹ

࡟ࡼࡗ࡚ࣄ⣲ྵ᭷㔞ศᯒࢆ⾜ࡗ࡚ࡁࡓࠋࡋ࠿ࡋ௒ᡂ  ᖺᗘࡣ  ᅇࡢ୰ᛶᏊᨺᑕ໬ศᯒࢆ⾜ࡗࡓࡀࠊᅇ⤌⧊ⓗ࡞࣮࣎ࣜࣥࢢㄪᰝ࡟ࡼࡗ࡚ศᯒヨᩱᩘᐃ࡛  㔜┠ࡢ⿄ࡀ◚ࢀࡿࡇ࡜ࡣ࡞࠿ࡗࡓࠋヨᩱࡀ୍Ẽ࡟ቑ࠼ࠊࡲࡓᾏእ࡛᥇ྲྀࡋࡓヨᩱࢆᅜෆ࡟㔞ࡣ  ᅇ┠ࡣ PJ ⛬ᗘࠊ ᅇ┠ࡣ PJ ⛬ᗘ࡜ᣢࡕᖐࡿᚲせୖ㍺㏦ࡍࡿヨᩱ㔞ࢆᑡ࡞ࡃᢚ࠼ࡓ

ࡋࡓࠋࡲࡓᶆ‽ヨᩱ࡜ࡋ࡚ࢁ⣬࡟ SSP ࣄ⣲ᶆ࠸஦࡞࡝࠿ࡽ໬Ꮫⓗศᯒ࡟ᑐࡋ࡚୰ᛶᏊᨺᑕ໬‽ᾮࢆ ࠊࠊࠊ ࣐࢖ࢡࣟࣜࢵࢺࣝ྾ࢃࡏ࡚

ศᯒࡢ஝⇱ࡉࡏࡓࡶࡢࢆసᡂࡋྠᵝ࡟⿄࡟ᐦᑒࡋࡓࠋ

㸦ϸ㸧ヨᩱࡢ≉ู࡞๓ฎ⌮ࢆᚲせ࡜ࡋ࡞࠸ࠊ ࡉࡽ࡟సᡂࡋࡓヨᩱࡣᏯ㓄౽࡛኱Ꮫ㛤ᨺ◊✲㸦Ϲ㸧ヨᩱ୰ඖ⣲ࡢ⤯ᑐྵ᭷㔞ศᯒࡀ࡛ࡁࡿࠊ

ᐊ࡟㏦ࡾᖹᡂ  ᖺ  ᭶࡜ᖹᡂ  ᖺ  ᭶ࡢィ  ᅇ㸦Ϻ㸧ᑡ㔞ࡢヨᩱ࡟ࡼࡿ㧗ឤᗘィ୰ᛶᏊᨺᑕ໬ࢆ⾜ࡗ࡚ࡶࡽࡗࡓࠋ୰ᛶᏊ↷ᑕࡣ 㸦ϻ㸧 ヨᩱ࠶ࡓࡾࡢ

ࡀྍ⬟ࠊᐃ᫬㛫ࡶࡑࢀ࡞ࡾ࡟▷࠸ࠊ

ྕ⅔ 31 Ẽ㏦⟶↷ᑕ⿦⨨ࢆ⏝࠸ࠊ࢔࢘ࢱ࣮࢟ࣕ

࡜࠸࠺฼Ⅼࢆ⪃࠼ࠊ௒ᅇࡢ୰ᛶᏊᨺᑕ໬ศᯒ࡟ࡼ

ࣉࢭࣝࡢୖୗ࡟ヨᩱ⿄ࢆ඘ሸࡋࡓࠋ↷ᑕ᫬㛫ࡣࡑࡿඹྠ◊✲ࢆ⏦ㄳࡋࡓࠋࡋ࠿ࡋ୍᪉࡛୰ᛶᏊᨺᑕࢀࡒࢀ  ศࠊ ศ࡜ࡋࠊ෭༷᫬㛫ࢆࡑࢀࡒࢀ ໬ศᯒ࡟ࡶ୙฼࡜ࡲ࡛ࡣゝ࠼࡞࠸ࡀヨᩱࢆධࢀ᪥༙ࠊ ᪥༙⛬ᗘ࡜ࡋࡓࠋ௒ᅇࡢ

ࡿ࣏࢚ࣜࢳࣞࣥ⿄ࡢసᡂ࠾ࡼࡧヨᩱࡢ⿄࡬ࡢᑒ࡞ࣂࢵࢡࢢࣛ࢘ࣥࢻ࡜࡞ࡗࡓඖ⣲ࡣண᝿㏻ࡾࢼ

ධసᴗࡀᚲせ࡛࠶ࡾࠊࡉࡽ࡟ཎᏊ⅔୰࡛ࡢ୰ᛶᏊ

ࢺ࣒࡛ࣜ࢘࠶ࡗࡓࠋ෭༷ᚋࡣ኱Ꮫ㛤ᨺ◊✲ᐊᐇ㦂↷ᑕࡢ⇕ὶධ࡟ࡼࡿỈ⵨Ẽ⏕ᡂ࡟ࡼࡿ⿄ࡢ◚⿣ᐊ࡟࠾࠸࡚࣏࢚ࣜࢳࣞࣥ⿄⛣ࡋ᭰࠼ࠊ ᐃჾ࡬ࡢࢆ㜵ࡄࡓࡵ࡟ヨᩱࢆ༑ศ࡟஝⇱ࡉࡏࡿᚲせ࡞࡝タ⨨ᚋࠊヨᩱࡢ⮬ື஺᥮ࣟ࣎ࢵࢺࢩࢫࢸ࣒ࢆ⏝࠸

JRR-3ࠊẼ㏦⟶↷ᑕ⿦⨨㸦31㸧ࠊᨺᑕ໬ศᯒ㸦⎔ቃヨᩱ㸧- 271 -

ᐃ࡛᭱ࡶ኱ࡁ

4-10
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JAEA-Review 2013-040

࡚ヨᩱࢆ⮬ືⓗ࡟஺᥮ࡋ࡞ࡀࡽ㧗⣧ᗘࢤ࣐ࣝࢽ

᳨࣒࢘ฟჾࢆ⏝࠸࡚  ヨᩱ࠶ࡓࡾ  ศ࠿ࡽ  ศ㸦㸱㸧◊✲ᡂᯝ㛫ィ ඛ࡟㏙࡭ࡓ᪉ἲࢆ⏝࠸࡚࣮࣎ࣜࣥࢢ࡟ࡼࡗ࡚

ࢆ⾜ࡗࡓࠋ ௒ᅇࡢᐃᑐ㇟ඖ⣲ࡣࣄ⣲࡛࠶ࡿࡀࠊ཯ᛂ㐣⛬᥇ྲྀࡋࡓᅵተヨᩱࡢࣄ⣲ྵ᭷㔞ศᯒࡢ⤖ᯝࢆᅗ ࢆ☜ㄆࡋ࡚࠾ࡃ࡜୰ᛶᏊࢆᤕ⋓ࡋࡓࣄ⣲ඖ⣲ࡣ࡟♧ࡍࠋ ᐃ⤖ᯝࡣᆅ⾲㠃࡟㏆࠸࡯࡝ࣄ⣲ྵ᭷㔞௨ୗࡢ㐣⛬ࢆ⤒࡚ᔂቯࡍࡿࠋ
n + 75As Ѝ 76As (୰ᛶᏊᤕ⋓)76
As Ѝ76Se* + e +Ȥ(șᔂቯ)
76 * 76Se Ѝ Se+Ț (Țᔂቯ)࡞࠾ $V ࡢ༙ῶᮇࡣ  ᪥࡛࠶ࡿࠋࡲࡓ௒ᅇ࢞

ࡀከ࠸஦ࢆ♧ࡋ࡚࠸ࡿࠋࡉࡽ࡟ᅗ  ࡟ྠ୍ᅵተヨᩱ࡟ᑐࡍࡿ୰ᛶᏊᨺᑕ໬ศᯒ࡟ࡼࡿ⤖ᯝ࠾ࡼࡧ໬Ꮫⓗศᯒࡢ⤖ᯝࢆ♧ࡍࠋ໬Ꮫⓗศᯒࡣྠ୍ᅵተ
ヨᩱ࡟ᑐࡋ࡚⊂❧ࡋࡓศᯒࢆ  ᅇ⾜ࡗࡓࠋ࣐ࣥ⥺ᨺฟ๭ྜࡢ᭱ࡶ኱ࡁ࡞ NH9 ࣐࢞ࣥ⥺ࡢィᩘ್ࢆ฼⏝ࡋࡓࠋᅗ  ࡟௒ᅇᐃࡋࡓ࣐࢞ࣥ⥺ࢫ࣌ࢡࢺࣝࡢ୍౛ࢆ♧ࡍࠋᅗ  ࣐࢞ࣥ⥺ࢫ࣌ࢡࢺࣝ
㸦ᕥᅗࡀᐃヨᩱࠊྑᅗࡣᶆ‽ヨᩱࠋ▮༳ࡣNH9 ࡢග㟁ࣆ࣮ࢡࢆ♧ࡍࠋ㸧ᅗ  ᖹᡂ  ᖺ  ᭶ࡢ ḟ࡟࣐࢞ࣥ⥺ィᚋࡢࣄ⣲ྵ᭷㔞Ỵᐃࡢᇶ‽࡜࡞ࡿᶆ‽ヨᩱࡢ᳨㔞⥺⤖ᯝࢆᅗ  ࡟♧ࡍࠋ⤖ᯝᐃ⤖ᯝ㸦ᶓ㍈ࡣᆅ⾲㠃࠿ࡽࡢ㊥㞳ࠊ⦪㍈ࡣࣄ⣲ྵ᭷㔞㸧ࡣ༑ศ࡟‶㊊࡛ࡁࡿ┤⥺ᛶࢆ♧ࡋ࡚࠸ࡿࠋ᳨㔞⥺ࡣ࢟ࣕࣉࢭࣝẖ࡟Ỵᐃࡋࠊࡉࡽ࡟࢟ࣕࣉࢭࣝෆࡢ
ୖୗࡑࢀࡒࢀ࡛ࡶ᳨㔞⥺ࢆồࡵࡓࡀࠊ୍ࡘࡢ࢟ࣕ
ࣉࢭࣝෆࡢୖୗ࡛ࡢ᳨㔞⥺ࡢ᭷ព࡞ᕪࡣㄆࡵࡽ
ࢀ࡞࠿ࡗࡓࠋ

ᅗ  ᖹᡂ  ᖺ  ᭶ࡢᐃ⤖ᯝ࠾ࡼࡧ໬Ꮫⓗศᯒ⤖ᯝ࡜ࡢẚ㍑ᅗ  ࣄ⣲ᶆ‽ヨᩱࡢ᳨㔞⥺㸦⣔ิ  ࡜࠶ࡿࡢࡣᨺᑕ໬ศᯒࡢ⤖ᯝࠊ⣔ิ ࠊ㸦ᶓ㍈ࡣࣄ⣲㔞ࠊ⦪㍈ࡣග㟁ࣆ࣮ࢡィᩘ㔞㸧ࡣ໬Ꮫⓗศᯒࡢ⤖ᯝࠋᶓ㍈ࠊ⦪㍈ࡣᅗ  ࡜ྠࡌࠋ㸧

JRR-3ࠊẼ㏦⟶↷ᑕ⿦⨨㸦31㸧ࠊᨺᑕ໬ศᯒ㸦⎔ቃヨᩱ㸧- 272 -

4-10
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JAEA-Review 2013-040ࡲࡓᖹᡂ  ᖺ  ᭶ࡢᨺᑕ໬ศᯒࡢ⤖ᯝࢆ⪃ᐹࡋᰝᆅᇦ࡛ࡢᆅୗỈ࡬ࡢࣄ⣲ࡢ⁐ฟࡢᶵᵓ࡟ࡘ࠸

࡚ࠊᖹᡂ  ᖺ  ᭶ࡢᨺᑕ໬ศᯒ࡛ࡣ෭༷᫬㛫ࢆ࡚ࡣᮍࡔ᫂࠿࡜ࡣ࡞ࡗ࡚࠾ࡽࡎࠊ⥅⥆ࡋࡓㄪᰝࡀ

㛗ࡃྲྀࡗࡓࠋࡑࡢ⤖ᯝࠊᨺᑕ໬ࡋࡓࢼࢺ࣒ࣜ࢘࠿ᚲせ࡛࠶ࡿࠋࡉࡽ࡟⡿ࠊᆅୗỈ࠾ࡼࡧⲡ࡞࡝ࢆ௓

ࡽࡢ࣐࢞ࣥ⥺ィᩘ⋡ࢆῶࡌࡘࡘࠊᨺᑕ໬ࡋࡓࣄ⣲ࡋࡓ∵⣅࡞࡝࡟ࡼࡿࣄ⣲ởᰁࡢᙳ㡪ࡶᮍ▱࡛࠶࠿ࡽࡢィᩘ⋡ࢆከࡃ✌ࡆࡓࡓࡵㄗᕪࡀᑠࡉࡃ࡛

ࡾࠊࡇࢀࡽࡢࣄ⣲⃰ᗘࡁࡓࠋ୰ᛶᏊᨺᑕ໬ศᯒ࡟

ྜࢃࡏ࡚ேయࡢࣄ⣲⵳✚࡜⑌⑓࡜ࡢ㛵ಀࡶ୙᫂ᐃ್࡜໬Ꮫศᯒ࡟ᐃࡢᚲせᛶࡶ⏕ࡌ࡚࠸ࡿࠋ

ᐃ್࡛ࡣⱝᖸࡢᕪࡣ࠶ࡿࡶࡢࡢࠊྠ୍ࡢഴྥࢆ♧࡞ⅬࡀከࡃࠊᆅᇦఫẸࡢẟ㧥୰ࡢࣄ⣲⃰ᗘࡋ࡚࠸ࡿࠋᚲせ࡛࠶ࡿࠋࡇࢀࡽࡢヨᩱࡢ୰ᛶᏊᨺᑕ໬ศᯒ࡟ᐃࡶᐃࢆ᳨ウࡋ࡚࠸ࡃࠋ

㸦㸲㸧◊✲ᡂᯝࡢホ౯ ᭱ᚋ࡟ࡇࡢඹྠ◊✲ࢆ㐍ࡵࡿୖ࡛ࡢ኱Ꮫ㛤ᨺ ᖹᡂ  ᖺᗘࡢ୰ᛶᏊᨺᑕ໬ศᯒ࡟ࡼࡿᅵተヨ◊✲ᐊࡢⓙᵝࡢ⊩㌟ⓗ༠ຊ࡟ឤㅰ⮴ࡋࡲࡍࠋ

ᩱ୰ࡢࣄ⣲ྵ᭷㔞ࢆ༑ศ࡞⢭ᗘ࡛

ᐃ࡛ࡁࡿࡇ



࡜ࡀ᫂࠿࡜࡞ࡗࡓࠋࡇࢀࡣ௒ᚋࡢ

ᐃ࡟༑ศ࡟ᮇ

ࠕᡂᯝࡢබ⾲ࠖᚅࡋ‶㊊࡛ࡁࡿ⤖ᯝ࡛࠶ࡿࠋࡲࡓᐑᓮ኱Ꮫࣄ⣲ᨺ

3XEOLFDWLRQVᑕ໬ศᯒ◊✲ࢢ࣮ࣝࣉ࡜ࡋ࡚ࡶ኱Ꮫ㛤ᨺ◊✲ᐊ

70$768'$㸪<0$('$㸪,0,<$+$5$㸪.2+(㸪<ࡢᣦᑟࢆཷࡅ࡚ᨺᑕ໬ศᯒࡢᡭἲࢆᏛ⩦ࠊ☜❧ࡍ

2*$:$㸪06(=$.,㸪.6+,2025,㸪$1$.$-,0$㸪ࡿ࡜࡜ࡶ࡟ࠊᨺᑕ໬ศᯒ࡟ᦠࢃࡿ࣓ࣥࣂ࣮ࡢேᩘ

.7$1$%(㸪(26$'$㸪6859(<2)$56(1,&&217(176ࢆቑࡸࡋ⤒㦂ࢆ✚ࡴ஦ࡀ࡛ࡁࡓࡇ࡜ࡶ኱ࡁ࡞ᡂ

,162,/62)7+(*$1*(65,9(5%$6,1%<86,1*

ᯝ࡛࠶ࡿࠋ

1(87521 $&7,9$7,21 $1$/<6,6 㸪 $UVHQLF6\PSR LQ ࡉࡽ࡟௒ᅇ࣮࣎ࣜࣥࢢㄪᰝࢆࡋࡓࢳ࢙ࢺࣛᮧ

0,<$=$.,  QG ,QWHUQDWLRQDO 6\PSRVLXP RQ

࡛ࡢᅵተヨᩱ୰ࡢࣄ⣲ྵ᭷㔞ࡢ῝ࡉ౫Ꮡᛶࢆᢕ

+HDOWK +D]DUGV RI $UVHQLF &RQWDPLQDWLRQ RI

ᥱ࡛ࡁࡓࡢࡣ኱ࡁ࡞ᡂᯝ࡛࠶ࡿࠋࡑࡢᐃ⤖ᯝࡣ

*URXQGZDWHUDQ,WV&RXQWHUPHDVXUHV̽([SDQVLRQRI

࠶ࡿព࿡࡛ண᝿እࡢࡶࡢ࡛࠶ࡗࡓࠋ௒ᅇ࣮࣎ࣜࣥ,QGLD3URMHFWWR$VLD$UHD  0D\

ࢢ᥇ྲྀࡋࡓᆅⅬ࡛ࡣࠊᙜึ࡟ண᝿ࡋ࡚࠸ࡓ⛬࡟ࡣ

0L\D]DNL .DQNR +RWHO 0L\D]DNL -DSDQ 2

ᅵተ୰ࡢࣄ⣲⃰ᗘࡣ኱ࡁ࡞ࡶࡢ࡛ࡣ࡞࠸஦ࡀ᫂

SS

࠿࡜࡞ࡗࡓࠋ୰ᛶᏊᨺᑕ໬ศᯒ࡛ࡣࣄ⣲ࡢ໬Ꮫᙧ

KWWSZZZPUFPL\D]DNLXDFMSLVDVែࢆ᫂࠿࡟ࡣ࡛ࡁ࡞࠸ࡀࠊࡋ࠿ࡋࡍ࡭࡚ࡢ໬Ꮫᙧ

4-10ែࡢୖ㝈್ࢆ୚࠼ࡿࡇ࡜ࡀ࡛ࡁࡿࡶࡢ࡛࠶ࡿࠋ
㸦㸳㸧௒ᚋ࡟ྥࡅ࡚ ᖹᡂ  ᖺᗘࡢᐃ⤖ᯝࢆ⪃៖ࡋࠊḟᅇ௨㝆ࡢ࣮࣎ࣜࣥࢢㄪᰝࡢ᪉ἲ࡜ࡋ࡚ከࡃࡢᆅⅬࢆὸࡃ࣮࣎ࣜࣥࢢㄪᰝࡍࡿ஦ࢆ᳨ウࡋ࡚࠸ࡿࠋᖾ࠸࡟ᖹᡂ  ᖺ࠿ࡽ  ᖺ㛫 -,&$ ࡢⲡࡢ᰿ᢏ⾡༠ຊ஦ᴗ࡜
ࡋ࡚ㄆࡵࡽࢀ⌧ᅾ࢖ࣥࢻഃࡢ஢ゎࢆᚅࡗ࡚ᖹᡂ ᖺ࡟࣮࣎ࣜࣥࢢㄪᰝࢆィ⏬ࡋ࡚࠸ࡿࠋࢳ࢙ࢺࣛ
ᮧ࡞࡝࡛୪⾜ࡋ࡚⾜ࡗࡓ஭ᡞỈࡢࣄ⣲⃰ᗘᐃ⤖ᯝ࠿ࡽࡣᚲࡎࡋࡶὸ࠸஭ᡞࡢᆅୗỈࡢࣄ⣲⃰ᗘࡀ㧗࠸࡜ࡣ㝈ࡽࡎࠊ῝࠸஭ᡞࡢᆅୗỈࣄ⣲⃰ᗘࡢ᪉ࡀ㧗࠸࡜࠸࠺⤖ᯝࡶᚓࡽࢀ࡚࠾ࡾࠊ࢖ࣥࢻㄪ
JRR-3ࠊẼ㏦⟶↷ᑕ⿦⨨㸦31㸧ࠊᨺᑕ໬ศᯒ㸦⎔ቃヨᩱ㸧- 273 -

㻝㻞㻝This is a blank page.

JAEA-Review 2013-040

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5.  ࣛ ࢪ࢜࢔࢖ࢯࢺ࣮ࣉ〇㐀 
5. Production of Radio Isotopes- 275 -

This is a blank page.

JAEA-Review 2013-040

5-1
197

Au ࣓ࢫࣂ࢘࢔࣮ศග࡟ࡼࡿ Au ࢼࣀࢡࣛࢫࢱ࣮ࡢ◊✲㸦㸰㸧
$X0¸VVEDXHUVWXG\RI$XQDQRFOXVWHUV  ி㒔኱ᏛཎᏊ⅔ᐇ㦂ᡤ ᑠᯘᗣᾈ
ᮾ໭኱Ꮫ㔠ᒓᮦᩱ◊✲ᡤ௜ᒓ㔞Ꮚ࢚ࢿࣝࢠ࣮ᮦᩱ⛉Ꮫᅜ㝿◊✲ࢭࣥࢱ࣮ ᮏ㛫ెဢ$X ࢼࣀࢡࣛࢫࢱ࣮ࡣ $X ཎᏊࡀᩘಶ࠿ࡽᩘ༑ಶ㞟ࢡࣛࢫࢱ࣮ࢆ㟁ẼὋື࡟ࡼࡗ࡚㉁㔞ẖ࡟ศ㞳ࡋࠊ$Xࡲࡗࡓࡶࡢ࡛ࠊ་⸆ရࡸゐ፹࡜ゝࡗࡓᐇ⏝㠃ࡔࡅ࡛ཎᏊ  ಶࡢࣞ࣋ࣝࡲ࡛኱ࡁࡉࢆࢥࣥࢺ࣮ࣟࣝࡋࡓ⢏࡞ࡃࠊ⣧⢋࡞≀⌮ⓗ໬Ꮫⓗ࡞⯆࿡࠿ࡽࡶὀ┠ࡉࢀ࡚Ꮚࢆᚓࡿࡇ࡜࡟ᡂຌࡋࡓ>@ࠋࡑࡢ୰࡛ $X ཎᏊ ࠸ࡿ≀㉁࡛࠶ࡿࠋ$X ཎᏊࡢࡳ࡛ࢡࣛࢫࢱ࣮ࡸᚤ⢏Ꮚಶ࡜ಖㆤᮦ࡜࡞ࡿ 6*㸦ࢢࣝࢱࢳ࢜ࣥ㸧 ಶࡀ⤖ྜࡋࢆసᡂࡋࡓሙྜࠊ⢏Ꮚࡢ⾲㠃ࡣ⁐⼥≧ែ࡟㏆࠸≧ែࡓࢡࣛࢫࢱ࣮ࡀ㠀ᖖ࡟Ᏻᐃࡋ࡚ᚓࡽࢀࡿࡇ࡜ࡀศ࠿

ࡢࡓࡵᐊ ࡛ࡶ $X ࢡࣛࢫࢱ࣮ྠኈࡀ⼥ྜࡋ࡚኱ࡁ

ࡗࡓࠋࡋ࠿ࡋࠊࡑࡢᏳᐃࡢཎᅉࡸࢡࣛࢫࢱ࣮ࡢᵓ㐀࡞⢏Ꮚ࡜࡞ࡗ࡚࠸ࡃࠋࡑࡇ࡛ࢡࣛࢫࢱ࣮⾲㠃ࢆಖㆤࡣ᫂ࡽ࠿࡛ࡣ࡞࠿ࡗࡓࠋᡃࠎࡢࢢ࣮ࣝࣉ࡛ࡣఢࢢࣝ

ᮦ࡜࿧ࡤࢀࡿศᏊ㸦⾲㠃άᛶ๣㸧࡛そ࠺ࡇ࡜࡟ࡼࡗ

࣮ࣉ࠿ࡽヨᩱࢆᥦ౪ࡋ࡚࠸ࡓࡔࡁࠊ$X ࣓ࢫࣂ࢘࢔

࡚⼥ྜࢆ㜵Ṇࡋࢡࣛࢫࢱ࣮࡜ࡋ࡚Ᏻᐃࡉࡏࡿࡇ࡜ࡀ

࣮ศග࠿ࡽࡇࡢࢡࣛࢫࢱ࣮ࡢᵓ㐀ࢆゎ᫂ࡍࡿࡇ࡜ࢆ

࡛ࡁࡿࠋࡇࡢࡼ࠺࡞ࢡࣛࢫࢱ࣮ࡸᚤ⢏Ꮚࢆసᡂࡍࡿ

ヨࡳࡓ>@ࠋ࣓ࢫࣂ࢘࢔࣮ศග࡛ࡣࡑࡢࢫ࣌ࢡࢺࣝࡢ

ᡭἲ࡜ࡋ࡚࠸ࡃࡘ࠿ࡢᡭἲࡀ࠶ࡿࡀࠊẚ㍑ⓗ⡆༢࡛ศ⿣ࡢᵝᏊࡸࢧࣈࢫ࣌ࢡࢺࣝࡢ㠃✚ẚ࠿ࡽ $X ཎᏊⰋዲ࡞ࢡࣛࢫࢱ࣮ࢆᚓࡿࡇ࡜ࡀ࡛ࡁࡿᡭἲ࡜ࡋ࡚⁐ࡢ≧ែࡸࡑࡢ≧ែ࡟࠶ࡿཎᏊᩘࡢ๭ྜࢆࡍࡿࡇ࡜ࡀ

ᾮ㑏ඖἲࡀ࠶ࡿࠋࡇࡢᡭἲࡣ $X ࢖࢜ࣥ࡜ಖㆤᮦ࡜࡞

࡛ࡁࡿࠋ࣓ࢫࣂ࢘࢔࣮ࢫ࣌ࢡࢺࣝ࠿ࡽ $X ཎᏊࡢ⎔ቃࡿ≀㉁ࡀ⁐ゎࡋࡓᾮయ୰࡟㑏ඖ๣ࢆຍ࠼ $X ࢆ㔠ᒓ࡜ࡑࡢ๭ྜࢆồࡵࠊࡇࢀ࡜ィ⟬ᶵ࡟ࡼࡿᵓ㐀ࢩ࣑ࣗ≧ែ࡟ࡍࡿ࡜ྠ᫬࡟ಖㆤᮦ࡛そ࠺ࡇ࡜࡟ࡼࡾᏳᐃࡋ

࣮ࣞࢩࣙࣥ࡜ࡢẚ㍑࠿ࡽࡑࡢᵓ㐀ࢆண ࡋࡓࠋ

ࡓ $X ࢡࣛࢫࢱ࣮ࢆసᡂࡍࡿࠋࡇࡢᡭἲࡣ୍ᗘ࡟ẚ㍑

ྠᵝࡢ $X ࢡࣛࢫࢱ࣮࡟ࡘ࠸࡚ࡣᚋ࡟ Heaven ࡽⓗ኱㔞ࡢ⢏Ꮚࢆసᡂ࡛ࡁࡿ࡜࠸࠺㛗ᡤࡶ࠶ࡿࠋࡓࡔ

ࡀ༢⤖ᬗࡢ ; ⥺ᵓ㐀ゎᯒ࡟ᡂຌࡋࠊࡑࡢᵓ㐀ࡀ᫂ࡽࡋࡇࡢᡭἲ࡛ࡣࠊ኱ࡲ࠿࡞ࢡࣛࢫࢱ࣮ࢧ࢖ࢬࡣ $X

࠿࡟࡞ࡗࡓ㸦ᅗ 㸧>@ࠋṧᛕ࡞ࡀࡽᚓࡽࢀࡓᵓ㐀ࡣ࢖࢜ࣥࡸಖㆤᮦࡢ⃰ᗘࠊ㑏ඖ๣ࡢᙉࡉ࡞࡝ࢆㄪᩚࡍ

ᡃࠎࡀண᝿ࡋࡓᵓ㐀࡜ࡣ␗࡞ࡗࡓࡀࠊᚓࡽࢀࡓᵓ㐀ࡿࡇ࡜࡟ࡼࡗ࡚ࢥࣥࢺ࣮࡛ࣟࣝࡁࡿࡀࠊࢧ࢖ࢬࡀᆒ

࠿ࡽண᝿ࡉࢀࡿ࣓ࢫࣂ࢘࢔࣮ࢫ࣌ࢡࢺࣝࡣᡃࠎࡀᚓ

୍࡞ࢡࣛࢫࢱ࣮ヨᩱࢆసᡂࡍࡿࡇ࡜ࡣ㞴ࡋ࠸ࠋࡓࢫ࣌ࢡࢺࣝ࡜୍⮴ࡍࡿ࡜ゝ࠼ࡿࠋࡍ࡞ࢃࡕࠊᡃࠎ

ఢࡽࡢࢢ࣮ࣝࣉ࡛ࡣࡇࡢࡼ࠺࡟ࡋ࡚సᡂࡋࡓ $X

ࡣ࣓ࢫࣂ࢘࢔࣮ࢫ࣌ࢡࢺࣝ࠿ࡽྛᡂศࡢ๭ྜࢆᚓࡓ
ࡀࠊࡑࡢᵓ㐀ࡢ⤌ࡳ❧࡚᪉࡟฿㐩࡛ࡁ࡞࠿ࡗࡓ࡜࠸
࠺ࡇ࡜࡟࡞ࡿࠋࡋ࠿ࡋࡇࡢ⤖ᯝ࠿ࡽࠊࢡࣛࢫࢱ࣮ࡢ
ᵓ㐀Ỵᐃ࡟᪊࠸࡚ $X ࣓ࢫࣂ࢘࢔࣮ศග ᐃࡣỴᐃⓗ࡜ࡣゝ࠼࡞࠸ࡲ࡛ࡶ༑ศ᭷⏝࡛࠶ࡿ࡜⪃࠼࡚࠸ࡿࠋ
ࡑࡇ࡛ᡃࠎࡣࡇࡢ $X ࢡࣛࢫࢱ࣮ࡢ⤒㦂ࢆ⏕࠿ࡋ࡞ࡀࡽࡉࡽ࡟␗࡞ࡗࡓࢧ࢖ࢬࡢࢡࣛࢫࢱ࣮ࡢᵓ㐀ࢆ᫂ࡽ࠿࡟ࡍࡿࡇ࡜ࢆィ⏬ࡋࡓࠋ$X ࢡࣛࢫࢱ࣮ࡣ㠀ᖖ࡟Ᏻᐃࡋࡓᵓ㐀ࢆࡋ࡚࠾ࡾࠊ༢⤖ᬗࢆసᡂࡍࡿࡇ
࡜ࡀྍ⬟࡛࠶ࡗࡓࡀࠊࡑࢀ௨እࡢࢧ࢖ࢬࡢࢡࣛࢫࢱ
࣮ࡣᏳᐃᛶࡀప࠸≀ࡀከࡃࠊ༢⤖ᬗࢆసᡂࡍࡿࡇ࡜
ࡣᐜ࡛᫆ࡣ࡞࠸ࠋࡑࡢࡓࡵ༢⤖ᬗࢆᚓ࡞ࡃ࡜ࡶᵓ㐀

ᅗ 1 Au25SG18 ࢡࣛࢫࢱ࣮ࡢᵓ㐀ࠋ[3]ࡢண᝿ࡀྍ⬟࡜࡞ࡿ࣓ࢫࣂ࢘࢔࣮ศගࡣ᭷ຠ࡞ ᐃᡭẁ࡜࡞ࡿࠋ

JRR-3ࠊHR2 Ỉຊ↷ᑕタഛࠊRI 〇㐀
㻠- 277 -

JAEA-Review 2013-040࣓ࢫࣂ࢘࢔࣮ศගࡣ୍⯡࡟ࡣ )H ᰾ࢆᑐ㇟࡜ࡋࡓ
ᐃࡀᗈࡃ▱ࡽࢀ࡚࠸ࡿࠋࡇࢀࡣ )H ࡢ࣓ࢫࣂ࢘࢔
࣮Ț⥺ࡢ࢚ࢿࣝࢠ࣮ࡀ NH9 ࡜పࡃᐊ ࡛ ᐃࡀ࡛ࡁࡿࡇ࡜ࠊ)H ࣓ࢫࣂ࢘࢔࣮ศගࡢȚ⥺※ࡢ༙ῶᮇࡀ  ᪥࡜ẚ㍑ⓗ㛗ࡃᕷ㈍ࡢᐦᑒ⥺※ࢆ฼⏝࡛ࡁࡿࡇ࡜ࠊ)H ࡀ⛉Ꮫ࠿ࡽ⏘ᴗࡲ࡛ᗈ࠸ศ㔝࡛⏝࠸ࡽࢀ࡚࠸ࡿඖ⣲࡛࠶ࡿࡇ࡜࡞࡝࡟ࡼࡿࠋ$X ࣓ࢫࣂ࢘࢔
࣮ศගࡣȚ⥺ࡢ࢚ࢿࣝࢠ࣮ࡀ NH9 ࡜ẚ㍑ⓗ㧗࠸ࡓࡵࠊヨᩱ࡜Ț⥺※ࢆ . ௨ୗࡢప ≧ែ࡛ࡢ ᐃᅗ 2 ྛ✀ࢹࣂ࢖ᗘ࡟࠾ࡅࡿ↓཯㊴ศ⋡ࡢᗘࡀᚲ㡲࡜࡞ࡿࠋ$X ࣓ࢫࣂ࢘࢔࣮ศග࡛⏝࠸ࡿ⿦⨨ࡣᇶᮏⓗ࡟ࡣ )H ࣓ࢫࣂ࢘࢔࣮ศග⏝ࡢ≀࡜ྠᵝ࡛ኚ໬࠶ࡿࡀࠊヨᩱ࡜ྠ᫬࡟⥺※ࢆ෭༷࡛ࡁࡿᶵᵓࢆᣢࡗ
ࡓ≉Ṧ࡞ࢡࣛ࢖࢜ࢫࢱࢵࢺࡀᚲせ࡜࡞ࡿࠋࡲࡓȚ⥺
197Pt※ࡢ༙ῶᮇࡀ  ᫬㛫࡜▷࠸ࡓࡵࠊ⥺※ࢆసᡂࡋ࡚㏿

18 hoursࡸ࠿࡟ ᐃࢆ㛤ጞࡋ࡞ࡅࢀࡤ࡞ࡽ࡞࠸ࠋ⥺※࡜࡞ࡿ

10%



3W ࡢᔂቯᅗࢆᅗ  ࡟♧ࡍࠋ3W ࡣ㔠ᒓ≧ែࡢ 3W

90%

࡟ཎᏊ⅔࡛ࡢ⇕୰ᛶᏊ↷ᑕࡍࡿࡇ࡜࡟ࡼࡗ࡚⏕ᡂ࡛

191.5 keV

I = 1/2
3/2

ࡁࡿࡓࡵࠊ$X ࣓ࢫࣂ࢘࢔࣮ศගࡣ◊✲⅔᪋タࡢ࿘

1.89 nsec㎶࡛ࡢࡳ ᐃࡍࡿࡇ࡜ࡀ࡛ࡁࡿࠋᮏㄢ㢟࡛ࡣ -55

77.3 keVࡲࡓ -55 ࡛ࡢ୰ᛶᏊ↷ᑕ࡛⏕ᡂࡋࡓȚ⥺※ࢆⲈᇛ┴኱Ὑ⏫࡟࠶ࡿᮾ໭኱Ꮫ㔠ᒓᮦᩱ◊✲ᡤ௜ᒓ㔞Ꮚ࢚

197Auࢿࣝࢠ࣮ᮦᩱ⛉Ꮫᅜ㝿◊✲ࢭࣥࢱ࣮㸦኱Ὑࢭࣥࢱ࣮㸧ᅗ 3 ⥺※㸦197Pt㸧ࡢᔂቯᅗ

࡬㏦ࡾࠊ኱Ὑࢭࣥࢱ࣮࢔ࢡࢳࣀ࢖ࢻᲷෆ࡟タ⨨ࡉࢀ࣓ࢫࣂ࢘࢔࣮ศගࡣཎᏊ᰾ࡢඹ㬆྾཰ࢆ฼⏝ࡋࡓศගἲ࡛ࠊ᰾‽఩ࡢ㉸ᚤ⣽ᵓ㐀࠿ࡽඹ㬆᰾ࡢ㟁Ꮚ≧ែࢆᐃࡍࡿࡇ࡜ࡀ࡛ࡁࡿࠋȚ⥺※࡟㏿ᗘࢆ୚࠼࡚

ࢻࢵࣉ࣮ࣛຠᯝ࡟ࡼࡗ࡚࢚ࢿࣝࢠ࣮ࢆኚㄪࡋ࡚ࢫ࣌
ࢡࢺࣝࡢ ᐃࢆ⾜࠺ࠋࢫ࣌ࢡࢺࣝ࠿ࡽồࡵࡽࢀࡿ࣓
ࢫࣂ࢘࢔࣮ࣃ࣓࣮ࣛࢱ࡟ࡣࠊཎᏊࡢ౯ᩘࢆ཯ᫎࡋࡓ
࢔࢖ࢯ࣐࣮ࢩࣇࢺࠊ ᐃཎᏊࡢ࿘ᅖࡢᑐ⛠ᛶࢆ཯ᫎࡋࡓᅄᴟᏊศ⿣ࠊ☢Ẽ࣮࣓ࣔࣥࢺࢆ཯ᫎࡍࡿ☢Ẽศ⿣࡞࡝ࡀ࠶ࡿࠋࡲࡓࠊࢫ࣌ࢡࢺࣝࡢᙧ≧࡛ࡣ࡞ࡃࢫ
࣌ࢡࢺࣝࡢ྾཰㠃✚࡜ࡋ࡚⌧ࢀࡿࣃ࣓࣮ࣛࢱ࡛࠶ࡿ
↓཯㊴ศ⋡ࡶ㔜せ࡜࡞ࡿࠋ↓཯㊴ศ⋡ࡣ࣓ࢫࣂ࢘࢔
࣮ຠᯝࡀ㉳ࡇࡿ☜⋡࡛࠶ࡾࠊ࣓ࢫࣂ࢘࢔࣮Ț⥺ࡢ࢚ࢿࣝࢠ࣮ࡀప࠸ሙྜࡸඹ㬆ཎᏊࡢ⤖ྜࡀᙉ࠸㸦ࢹࣂ࢖ᗘࡀ㧗࠸㸸ᅛ࠸㸧ሙྜ࡟㧗ࡃ࡞ࡿࠋᅗ  ࡟࠸ࡃࡘ࠿ࡢࢹࣂ࢖ ᗘ࡟࠾ࡅࡿ↓཯㊴ศ⋡ࡢ ᗘኚ໬ࢆ♧ࡍࠋࡓ෭෾ᶵ௜ࡁ࣓ࢫࣂ࢘࢔࣮ศග⿦⨨ࢆ⏝࠸࡚⾜࠺ࠋࡑࡢࡓࡵࠊ
࡛ࡢᐃࢆᐃ㛤ጞ࡟ඛ❧ࡕ࢔ࢡࢳࣀ࢖ࢻᲷ



3W ࡢ౑⏝チㄆྍ㔞ࡢኚ᭦ᡭ⥆ࡁࢆ⾜ࡗ࡚࠸ࡿࠋᅗ  ࡟ᮏㄢ㢟࡛ᚓࡽࢀࡓ $X ࣓ࢫࣂ࢘࢔࣮ࢫ࣌ࢡ
ࢺࣝࢆ♧ࡍࠋࢫ࣌ࢡࢺࣝࡢ୰ᚰ㸦㏿ᗘࢮࣟ㸧ࡣ $X⟩ࡢࢫ࣌ࢡࢺࣝࡢࣆ࣮ࢡ఩⨨࡟ᐃࡵ࡚࠸ࡿࠋ⥺※ࡣ
PJ ࡢ㔠ᒓ 3W ࡟ᑐࡋ࡚ -55+5 Ỉຊ↷ᑕタഛ⿦⨨࡛  ศ㛫↷ᑕ࡛సᡂࡋࡓࠋ3W ࡢ⏕ᡂ㔞ࡣ↷ᑕ⤊஢┤ᚋ࡛ 0%T ࡛࠶ࡿࠋࡇࡢ⥺※ࢆᑓ⏝౽࡛኱Ὑࢭࣥࢱ࣮࡟㏦ࡾ ᐃࢆ⾜ࡗࡓࠋᅗ  ୖࡢࢫ࣌ࢡࢺࣝࡣ࣓ࢫࣂ࢘࢔࣮⿦⨨ࡢ❧ࡕୖࡆ᫬࡟ヨ㦂ⓗ࡟ᐃࡋࡓ $X ⟩ࡢ࣓ࢫࣂ࢘࢔࣮ࢫ࣌ࢡࢺ࡛ࣝࠊࡇࢀ࡟
ࡘ࠸࡚ࡣ༑ศ࡞⤫ィ⢭ᗘࢆᚓࡽࢀ࡚࠸ࡿ࡜ゝ࠼ࡿࠋࡋ࠿ࡋࠊᅗ  ୗࡢ $X ࢡࣛࢫࢱ࣮ࡢヨᩱࡢࢫ࣌ࢡࢺ
ࣝࡣ⢭ᗘࡀపࡃࠊヲ⣽࡞ゎᯒࢆ⾜࠺ࡓࡵ࡟ᚲせ࡞⤫ィ⢭ᗘ࡟㐩ࡋ࡚࠸࡞࠸ࠋࡇࡢࡓࡵࠊࡇࡢ⤖ᯝ࡟ࡘ࠸

JRR-3ࠊHR2 Ỉຊ↷ᑕタഛࠊRI 〇㐀

5-1
㻡

- 278 -

JAEA-Review 2013-040ࡇࡢ஧ࡘࢆ༊ูࡍࡿࡓࡵࠊᡃࠎࡣ $X ཎᏊᩘࡀ␗࡞
ࡿ $X ࢡࣛࢫࢱ࣮࡛ࡢ↓཯㊴ศ⋡ࡢ ᐃࢆィ⏬ࡋ࡚

x10

3

810
800

Counts790

ࡕ $X ཎᏊྠኈࡢ⤖ྜࡀ༑ศ࡟ᙉࡃ $X ࢡࣛࢫࢱ࣮ࡢ

1.965࿘ࡾࡢಖㆤᮦࡀᰂࡽ࠿࠸ሙྜ࡟ࡣࠊࢡࣛࢫࢱ࣮ࡢ኱
ࡁࡉࡍ࡞ࢃࡕ㐠ືࡍࡿ⢏Ꮚࡢ㉁㔞ࡀ኱ࡁࡃ࡞ࡿ࡜ࣇ

1.960

࢛ࣀࣥບ㉳࡟ᚲせ࡞࢚ࢿࣝࢠ࣮ࡀ኱ࡁࡃ࡞ࡾࠊ↓཯x106࠸ࡿࠋࡶࡋࠊඛ࡟ᣲࡆࡓཎᅉࡢ࠺ࡕࡢᚋ⪅ࠊࡍ࡞ࢃ

Au foil㊴ศ⋡ࡣ኱ࡁࡃ࡞ࡿࡣࡎ࡛࠶ࡿࠋ୍᪉ࠊ๓⪅ࡘࡲࡾ

1.955

-10

ᅗ4

Au25SC18
0$X ཎᏊྠኈࡢ⤖ྜࡀᙅ࠸ሙྜ࡟ࡣࢡࣛࢫࢱ࣮ࢧ࢖
ࢬࡀኚ໬ࡋ࡚ࡶ㐠ືࡍࡿ⢏Ꮚ㸦ࡇࡢሙྜࡣ $X ཎᏊ㸧

10Velocity mm/s

ࡢ㉁㔞࡟ኚ໬ࡣ↓ࡃ↓཯㊴ศ⋡ࡢኚ໬ࡣᑠࡉ࠸ࡲࡲ

Au ⟩࡜ Au25 ࢡࣛࢫࢱ࣮ࡢ 197Au ࣓ࢫࣂ࡜ண᝿ࡉࢀࡿࠋ↓཯㊴ศ⋡ࢆồࡵࡿࡓࡵ࡟ࡣࠊ$X 㔞ࡀṇ☜࡟ศ࠿ࡗ࡚࠸ࡿヨᩱࡢࢫ࣌ࢡࢺࣝ྾཰㠃✚ࢆ࢘࢔࣮ࢫ࣌ࢡࢺࣝ

ẚ㍑ࡍࡿࡇ࡜࡟ࡼࡗ࡚ồࡵࡿࡇ࡜ࡀ࡛ࡁࡿࡀࠊࡑࡢ࡚ࡢㄽᩥⓎ⾲ࡣ࡛ࡁ࡚࠸࡞࠸ࠋ
$X ࢡࣛࢫࢱ࣮ࡢࢫ࣌ࢡࢺࣝࡢ⢭ᗘࡀప࠸ࡢࡣࡇ
ࡢヨᩱࡢ྾཰ᙉᗘࡀ $X ⟩ࡢࢫ࣌ࢡࢺࣝ࠿ࡽண᝿ࡋ
࡚࠸ࡓ್࡟ẚ࡭࡚㠀ᖖ࡟ప࠿ࡗࡓࡓࡵ࡛࠶ࡿࠋ࣓ࢫ
ࣂ࢘࢔࣮ࢫ࣌ࢡࢺࣝࡢ྾཰ᙉᗘࡣඹ㬆ࢆ㉳ࡇࡍ᰾ࡢᩘ࡜↓཯㊴ศ⋡ࡢ✚࡟ẚ౛ࡍࡿࠋࢫ࣌ࢡࢺࣝ྾཰ᙉ
ᗘࡀప࠸࡜࠸࠺ࡇ࡜ࡣࠊఱࡽ࠿ࡢཎᅉ࡟ࡼࡗ࡚ヨᩱ୰ࡢ $X ࡢ㔞ࡀῶᑡࡋ࡚࠸ࡓࠊࡶࡋࡃࡣ↓཯㊴ศ⋡ࡀண᝿௨ୖ࡟ప࠸࡜࠸࠺஧ࡘࡢཎᅉࡀ⪃࠼ࡽࢀࡿࠋヨᩱ୰ࡢ $X ࡢῶᑡ࡟ࡘ࠸࡚ࡣヨᩱసᡂ㐣⛬ࡢ᳨ウ࠿ᗘኚ໬ࢆ ᐃࡍࡿࡇ࡜࡟ࡼࡾࡉࡽ࡟ࢹࣂ࢖

ồࡵࡿࡇ࡜ࡀ࡛ࡁࡿࠋᅗ  ࡟♧ࡋࡓ࡜࠾ࡾࠊ↓཯㊴ศ⋡ࡢᡃࠎࡣࡇࡢ↓཯㊴ศ⋡ࡢῶᑡࡢཎᅉࢆ▱ࡿࡇ࡜ࡣࡼࡾⰋ࠸ ᐃࢆ⾜࠺࡜࠸࠺┠ⓗࡢࡳ࡞ࡽࡎ≀⌮ⓗ࡟⯆࿡ࡀ࠶ࡿ⌧㇟࡛࠶ࡿ࡜⪃࠼ࠊḟᮇㄢ㢟࡛ࡣࡇࡢ↓཯㊴ศ⋡࡟ࡘ࠸࡚ࡼࡾヲ⣽࡟ㄪ࡭ࡿࡇ࡜ࢆィ⏬ࡋ࡚࠸ࡿࠋ↓཯㊴ศ⋡ࡀప࠸࡜࠸࠺ࡇ࡜ࡣ $X ࢡࣛࢫࢱ࣮
ࡀࠕᰂࡽ࠿࠸ࠖࡇ࡜ࢆ♧ࡋ࡚࠸ࡿࡀࠊࡑࡢᰂࡽ࠿ࡉ
ࡢཎᅉ࡟ࡘ࠸࡚஧ࡘࡢྍ⬟ᛶࡀ⪃࠼ࡽࢀࡿࠋ୍ࡘࡣ
$X ࢡࣛࢫࢱ࣮ෆࡢ $X ཎᏊྠኈࡢ⤖ྜࡀᙅ࠸≧ែࠊࡶ࠺୍ࡘࡣ $X ཎᏊྠኈࡢ⤖ྜࡣ㏻ᖖࡢ㔠ᒓ࡜ྠ➼ࡔࡀࢡࣛࢫࢱ࣮ࢆྲྀࡾᕳࡃಖㆤᮦࡀᰂࡽ࠿࠸ሙྜ࡛
࠶ࡿࠋ࡝ࡕࡽࡢሙྜࡶ $X ཎᏊ࡟࡜ࡗ࡚ࡣᰂࡽ࠿࠸
㸦ࣇ࢛ࣀࣥࢆບ㉳ࡋࡸࡍ࠸㸧≧ែ࡛࠶ࡾࠊ↓཯㊴ศᗘኚ໬ࡣࢹࣂ࢖ ᗘ࡟ࡼࡗ࡚኱ࡁࡃ␗࡞ࡾࠊ

༢࡞ࡿ྾཰㠃✚ࡢẚ㍑ࡼࡾࡶࡼࡾṇ☜࡞᝟ሗࢆᚓࡿ
ࡇ࡜ࡀ࡛ࡁࡿࠋࢹࣂ࢖ ᗘ࡜ࢡࣛࢫࢱ࣮ࢧ࢖ࢬࡢ౫Ꮡᛶࢆ ᐃࡍࡿࡇ࡜ࡀ࡛ࡁࢀࡤࠊᑠࡉ࠸ࢧ࢖ࢬ࡛ࡣ
ศᏊ࡜ࡋ࡚᣺ࡿ⯙ࡗ࡚࠸ࡓࢡࣛࢫࢱ࣮ࡀࢧ࢖ࢬࡢቑ
ຍ࡜࡜ࡶ࡟㔠ᒓⓗ࡟ኚ໬ࡋ࡚࠸ࡃᵝᏊࢆぢࡿࡇ࡜ࡀ࡛ࡁࡿࡢ࡛ࡣ࡞࠸࠿࡜ண᝿ࡋ࡚࠸ࡿࠋ
ࡽྍ⬟ᛶࡣప࠸࡜⪃࠼ࡽࢀࡿࡓࡵࠊ↓཯㊴ศ⋡ࡢపୗࡀ྾཰ᙉᗘῶᑡࡢ୺せ࡞ཎᅉ࡜⪃࠼ࡽࢀࡿࠋ

ᗘࢆ

ཧ⪃ᩥ⊩
[1] Y. Negishi et al., J. Am. Chem. Soc., 127(2005) 5261-5270[2] K. Ikeda et al., J. Am. Chem. Soc., 129(2007) 7230
[3] M. W. Heaven et al., J. Am. Chem. Soc., 130(2008) 3754-3755
ᡂᯝࡢබ⾲ᮏᩥ୰࡟ࡶグࡋࡓ࡜࠾ࡾࠊᮍࡔ༑ศ࡞ࢫ࣌ࢡࢺࣝ
ࢆᚓࡿࡇ࡜ࡀ࡛ࡁ࡚࠸࡞࠸≧ែ࡛࠶ࡾࠊᡂᯝ࡜ࡋ
࡚ࡢබ⾲ࡣ⾜ࡗ࡚࠸࡞࠸ࠋ

⋡ࡣୗࡀࡾࢫ࣌ࢡࢺࣝ྾཰㠃✚ࡣᑠࡉࡃ࡞ࡿࡣࡎ࡛

5-1

࠶ࡿࠋ

JRR-3ࠊHR2 Ỉຊ↷ᑕタഛࠊRI 〇㐀
㻢- 279 -

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JAEA-Review 2013-040
















6.  ࡑ ࡢ௚ 


6. Others- 281 -

This is a blank page.

JAEA-Review 2013-040

6-1

Ș⥺ࢺࣛࢵࢡ࢚ࢵࢳࣥࢢἲ࡟ࡼࡿྛ✀㔠ᒓᮦᩱࡢ࣎ࣟࣥ≧ែศᕸࡢほᐹObservation of boron in various steel materials by -particle track etching method       ᮾி኱Ꮫ኱Ꮫ㝔ᕤᏛ⣔◊✲⛉࣐ࢸࣜ࢔ࣝᕤᏛᑓᨷ

ᮅ಴೺ኴ㑻ࠊᑠ㛵ᩄᙪ               Department of Materials Science, Faculty of Engineering, The Univ. of Tokyo          
K. Asakura and T. KosekiϨ㸬◊✲ࡢ┠ⓗ࡜ព⩏Ϩ㸫㸯㸬◊✲ࡢ┠ⓗ ㏆ᖺࠊᵓ㐀≀ࡢᏳ඲࡬ࡢ㓄៖ࡀ㧗ࡲࡾࠊ㧗ᙉᗘ࣭㧗ᘏᛶࡢᮦᩱ㛤Ⓨ࡟ᮇᚅࡀࡶࡓࢀ࡚࠸ࡿࠋ
ᩥ⛉┬࣭ࣉࣟࢪ࢙ࢡࢺ࣮ࣜࢲ࣮ࡢᑠ㛵ᩄᙪࡣࠕ㉸㧗ᙉᗘ㍍㔞⛣ືయࢆྍ⬟࡟ࡍࡿ」ᒙ㗰ᯈࠖ◊✲㛤
Ⓨࣉࣟࢪ࢙ࢡࢺࢆࠊ+ ᖺᗘ࠿ࡽ  ࢝ᖺィ⏬࡛ศᢸࡋ࡚ࡁࡓࠋᮏࣉࣟࢪ࢙ࢡࢺ࡛ࡣࠊ⇕㛫ᅽᘏཬࡧ෭㛫ᅽᘏ࡟ࡼࡗ࡚」ᒙ㗰ᯈࢆస〇ࡍࡿࡇ࡜࡟ࡼ
ࡾࠊձ」ᒙ⤌ࡳྜࢃࡏࡢタィ࣭㑅ᢥࠊղ✚ᒙᩘ࣭ᒙཌࡢᙳ㡪ࠊճྛᒙෆࡢ㔠ᒓ⤌⧊ไᚚࠊմ」ᒙ⏺
㠃ࡢ࣑ࢡ࣭ࣟࢼࣀ⤌⧊ไᚚࡢ᳨ウࢆ㐍ࡵ࡚࠸ࡿࠋ࡜ࡃ࡟㔜せ࡞せ⣲ࡣ」ᒙ໬ࡢ⏺㠃ᙧᡂ࡟ཬࡰࡍ
ᮦᩱࡢ㑅ᐃ࡜ࠊ⇕ฎ⌮ࡢᙳ㡪ࡣ㔜せ࡞࣏࢖ࣥࢺ࡛
࠶ࡿࠋࡓ࡜࠼ࡤ◳㉁㔠ᒓ࡜㌾㉁㔠ᒓࡢ⤌ࡳྜࢃࡏࠊ
ᒙཌ࡞࡝ࡀ㔠ᒓ࡬ࢸࣟ⏺㠃ࡢᙉᗘ࡜ᘏᛶ࡟኱ࡁ
࡞ᙳ㡪ࢆཬࡰࡍࠋࡇࡇ࡛ࡣ✚ᒙᵓ㐀ᮦࡢ⏺㠃ᙉᗘࢆ㧗ࡵࡿ࣎ࣟࣥࡢ≧ែศᕸࢆ⇕ฎ⌮ࡢどⅬ࠿ࡽ᫂ࡽ࠿࡟ࡋࡓࠋࡉࡽ࡟ ᆅ⌫⎔ቃၥ㢟࠿ࡽ&2᤼ฟ㔞ࡢ๐ῶࠊ໬
▼⇞ᩱࡢ⠇⣙ࡸ㧗㦐ࢆ⫼ᬒ࡟㧗ຠ⋡㸦㧗 㧗ᅽ໬㸧࡞ⅆຊⓎ㟁ࣉࣛࣥࢺࡀὀ┠ࡉࢀ࡚࠾ࡾࠊ
㉸ࠎ⮫⏺ᅽ㸦86&㸧ⅆຊⓎ㟁ࣉࣛࣥࢺ࣎࢖ࣛ⏝㧗ࢡ࣒ࣟ⣔ࣇ࢙ࣛ࢖ࢺ㗰࡟࠾ࡅࡿ㧗ᙉᗘ໬ࡀᛴࡀࢀ࡚࠸ࡿࠋ&U:⣔㗰ࡢ㛗᫬㛫ᙉᗘ࡟ᙳ㡪ࢆཬࡰࡍ&Rࠊ%ࡢᙳ㡪࡟ࡘ࠸࡚࣎ࣟࣥࡢᏑᅾᙧ
ែ࡜࣑ࢡࣟ⤌⧊࡜ࡢᑐᛂ࠿ࡽ᫂ࡽ࠿࡟ࡋࡓࠋ
Ϩ㸫㸰㸬◊✲ࡢᡭẁ࡜ព⩏࣎ࣟࣥࡢࡼ࠺࡞㍍ඖ⣲ࢆྍどⓗ࡟ほᐹࡍࡿࡇ࡜ࡣᐜ࡛᫆ࡣ࡞࠸ࠋ㍍ඖ⣲ࢆศᯒࡍࡿ࡟ࡣ㟁Ꮚ⥺ࢆ฼⏝ࡋࡓ㏱㐣㟁Ꮚ㢧ᚤ㙾㸦EDSࠊEELS㸧ࠊ࣮࢜ࢪ࢙ศගศᯒἲࠊ㟁Ꮚ⥺࣐࢖ࢡࣟ࢔ࢼࣛ࢖ࢨ࣮㸦EPMA㸧ࡀ⏝࠸ࡽࢀ࡚࠸ࡿࠋࡲࡓ࢖࢜ࣥࣅ࣮࣒
ࢆ⏝࠸ࡓ࢖࣐࢜ࣥ࢖ࢡࣟ࢔ࢼࣛ࢖ࢨ࣮(IMMA)ࠊ
஧ḟ࢖࢜ࣥ㉁㔞ศᯒ㸦SIMS㸧ἲ࡞࡝ࡀ⏝࠸ࡽࢀ࡚࠸ࡿࡀࠊศᯒ⢭ᗘࡣపࡃ 0.3㹼0.1mass㸣⛬ᗘ࡛࠶ࡿ 1)ࠋ௚᪉ࠊATE ἲࡣ࣎ࣟࣥඖ⣲ࡢࡳࡀ ppm ࣮࢜ࢲࡢ㧗ឤᗘ᳨࡛ฟ࡛ࡁࡿ࡜࠸࠺࣓ࣜࢵࢺࡀ࠶ࡿࠋ཯
㠃ࠊᐃ㔞ࡸᏑᅾᙧែࡀࢃ࠿ࡾ࡟ࡃ࠸࡞࡝ࡢࢹ࣓ࣜ
ࢵࢺࡀ࠶ࡿࠋ 㕲㗰ᮦᩱࡢ➃㒊ࡣ⇕ฎ⌮࡟ࡼࡗ࡚ࠊ⬺ Cࠊ⬺࣎ࣟࣥࡢᙳ㡪ࢆཷࡅࡸࡍ࠸ࠋࡇࡢࡓࡵ ATE ⏝ࡢヨᩱࡣࠊヨᩱ୰ኸ㒊ࡼࡾཌࡉ⣙ 1mm ࡟ษࡾฟࡋࡓᚋ ࠊ ࡉ ࡽ ࡟ヨ ᩱ ➃ ࢆ 㝖࠸ ࡚ ࠊ ヨ ᩱࢧ ࢖ ࢬ ࢆ ⦪
12mm× ᶓ 7mm× ཌ ࡉ 1mm ࡜ ࡋ ࡓ ࠋ ḟ ࡟ ࠊ
12mm×7mm ࡢᖹ㠃ࢆ㸡180㹼㸡1200 ࡢ࢚࣓࣮ࣜ⣬ࢆ⏝࠸࡚ᶵᲔ◊☻ࢆ⾜ࡗࡓᚋࠊࣂࣇ◊☻㸦1ȣ㹫࢔࣑ࣝࢼ⢊㸧࡛㙾㠃࡟௙ୖࡆࡓࠋ࡞࠾ࠊATE

Fig.1 ATE ἲࡢᴫ␎࡜ᡭ㡰ほᐹ㠃ࡣ⇕㛫ᅽᘏࡢ㝿ࡢᅽᘏ᪉ྥ࡟ᑐࡋ࡚ᆶ┤㠃ࠊ࠶ࡿ࠸ࡣࢡ࣮ࣜࣉヨ㦂∦ࡢᶓ᩿㠃࡛࠶ࡿࠋ࣎ࣟࣥ࡟㛵ࡋ࡚ࡣ ATE ἲࢆ⏝࠸࡚ࠊᯒฟᙧែ
࠾ࡼࡧศᕸࢆㄪ࡭ࡓࠋATE ἲࡣࠊ⇕୰ᛶᏊ↷ᑕ࡟ࡼࡗ࡚࣎ࣟࣥ୰࡟ྵࡲࢀ࡚࠸ࡿྠ఩యࡢ 10B ࡜୰ᛶᏊࡢ᰾཯ᛂ࡟ࡼࡾ▐㛫ⓗ࡟Ⓨ⏕ࡍࡿȘ⥺ࡀࠊヨᩱ⾲㠃࡟㈞ࡾ௜ࡅࡓ◪㓟ࢭ࣮ࣝࣟࢫࣇ࢕࣒ࣝ࡟
ࡘࡅࡓ⑞㊧ࢆࠊ2.5N-NaOH ᾮ࡛࢚ࢵࢳࣥࢢࡋࡓ
ᚋࠊගᏛ㢧ᚤ㙾ࢆ⏝࠸࡚࣎ࣟࣥศᕸ≧ែࢆほᐹࡍࡿࡇ࡜ࡀ࡛ࡁࡿ㸦10B㸩1n7Li㸩4He㸦㸧཯ᛂ㸧ࠋ
ATE ἲࡢᴫ␎ࢆ Fig.1 ࡟♧ࡍࠋࡇࡢᡭἲ࡟ࡼࡾ࣎

JRR-3㸦Ẽ㏦⟶↷ᑕ㸧ࠊJRR-4㸦་⒪⏝↷ᑕ㸧ࠊATE㸦Ș⥺ࢺࣛࢵࢡ࢚ࢵࢳࣥࢢ㸧ἲࠊ㕲㗰ᮦᩱࠊ࣎ࣟࣥ≧ែศᕸほᐹ㻝㻞㻟- 283 -

JAEA-Review 2013-040ࣟࣥࡢᏑᅾ఩⨨㸦⢏⏺ࠊ⢏ෆ㸧ࡸᏑᅾᙧែ㸦೫ᯒࠊᯒฟ㸧ࢆほᐹ࡛ࡁࠊឤᗘࡶ 1ppm ࣮࢜ࢲࡢ࣎ࣟࣥ
ࢆ᳨ฟࡍࡿࡇ࡜ࡀ࡛ࡁࡿࠋ୰ᛶᏊ↷ᑕࡣ᪥ᮏཎᏊ
ຊ◊✲㛤ⓎᶵᵓࡢཎᏊ⅔ JRR-4㸦3.5MW㸧࡜
JRR-3㸦20MW㸧ࢆ⏝࠸ࡓࠋϩ㸬◊✲ᡂᯝ
◊✲㸯㸸$7(㸦Ș⥺ࢺࣛࢵࢡ࢚ࢵࢳࣥࢢ㸧ἲ࡟ࡼࡿ✚ᒙẕᮦࡢ࣎ࣟࣥศᕸ㸯㸬⥴ゝ⇕㛫ᅽᘏཬࡧ෭㛫ᅽᘏ࡟ࡼࡗ࡚」ᒙ㗰ᯈࢆస〇ࡍࡿ㝿ࠊ」ᒙ⏺㠃ࡢ࣑ࢡࣟ⤌⧊࡜࣎ࣟࣥࡢ೫ᯒ
ཬࡧᯒฟ㸦࡯࠺໬≀ࡢศᕸ≧ែほᐹ㸧࡜࠸࠺どⅬ࠿ࡽࠊ」ᒙ໬ࡢ⏺㠃ᙧᡂ࡟ཬࡰࡍᅽᘏࣉࣟࢭࢫࡢ
ㅖ᮲௳ࡢᙳ㡪ࠊᅽᘏᚋࡢ⇕ฎ⌮ࡢᙳ㡪࡞࡝࡟ࡘ࠸
࡚ ATE ἲࢆ⏝࠸࡚ㄪᰝࡋࡓࠋ◊✲ 1 ࡛ࡣ✚ᒙẕᮦࡢ⇕ฎ⌮ࡢᙳ㡪࡜࣎ࣟࣥศᕸ࡟ࡘ࠸࡚ㄪᰝࡋࠊ
◊✲ 2 ࡛ࡣ㔠ᒓ࡬ࢸࣟ⏺㠃ࡢᙉᗘ࡜⤌⧊ⓗ┦㛵ᛶࠊ✚ᒙ㕲㗰ᮦᩱࢆ⏝࠸࡚ࠊ◳㉁㸭㌾㉁⏺㠃࡟࠾ࡅࡿB ࡢ≧ែศᕸᣲື࡟ࡘ࠸࡚᫂ࡽ࠿࡟ࡋࡓࠋ
 ATE㸦 ⥺ࢺࣛࢵࢡ࢚ࢵࢳࣥࢢ㸧ἲࡣࠊ1ppm⃰ᗘ௨ୗࡢ࡛࣎ࣟࣥࡶᤊ࠼ࡿࡇ࡜ࡢ࡛ࡁࡿ᝟ሗ
※࡜ࡋ࡚၏୍࡞ᐇ㦂ᡭẁ࡛࠶ࡿࡇ࡜ࠊࡲࡓ㗰୰࣎ࣟࣥࡢ≧ែศᕸࢆほᐹ࡛ࡁࡿࡇ࡜ࡀሗ࿌ࡉࢀ࡚࠸ࡿ 1)ࠋ࣎ࣟࣥࡣ BNࠊM3(CB)࠾ࡼࡧ Fe23(CB)6࡟ᅛ⁐ࡋ࡚ᯒฟࡍࡿࡇ࡜ࡀ▱ࡽࢀ࡚࠸ࡿ 2)ࠋ

 ௚᪉ࠊࣇ࢙ࣛ࢖ࢺ⤌⧊࡟࠾࠸࡚ᙉᗘ㸦࡜ࡃ࡟㝆అᙉᗘ㸧ࢆ㧗ࡵࠊࡉࡽ࡟㠎ᛶࢆ㧗ࡵࡿ၏୍ࡢ᪉ἲ
ࡣࣇ࢙ࣛ࢖ࢺ⢏ࡢ⣽⢏໬࡛࠶ࡿࠋ௚᪉ࠊ࣎ࣟࣥࡣ
࣮࢜ࢫࢸࢼ࢖ࢺ⢏⏺ࡸࣇ࢙ࣛ࢖ࢺ⢏⏺࡟೫ᯒࡋࠊ
⣽⢏໬࡜↝ࡁධࢀᛶࡢྥୖ࡟ᐤ୚ࡍࡿࡇ࡜ࡀ▱ࡽࢀ࡚࠾ࡾࠊࡑࡢ඲ᐜࢆ᫂ࡽ࠿࡟࡛ࡁࡿࠋࡇࡇ࡛
ࡣྛ✀✚ᒙẕᮦࢆ⏝࠸࡚ࠊ⇕ฎ⌮ࡢᙳ㡪ࢆ೫ᯒ࠾ࡼࡧᯒฟ≧ែࡢどⅬ࠿ࡽᐇ㦂ࢆ⾜ࡗࡓࠋ㸰㸬ᐇ㦂᪉ἲ
 Table 1 ࡟♧ࡋࡓ✚ᒙẕᮦࢆ⏝࠸࡚ ATE ീࡢほᐹ ࢆ ⾜ ࡗ ࡓ ࠋ ࣇ ࢙ ࣛ ࢖ ࢺ ⣔ 㗰 ࡣ WT780C ࠊ
SCM415ࠊSPCC ཬࡧ SUS420J2 ࡛࠶ࡿࠋ࣮࢜ࢫ
ࢸࢼ࢖ࢺ⣔㗰ࡣ SUS304 ཬࡧ SUS304N2 ࡛࠶ࡿࠋࡇࢀࡽࡢ✚ᒙẕᮦ࡟ࡘ࠸࡚ࣇ࢓࢖ࣥ࢝ࢵࢱ࣮ࢆ
⏝࠸࡚⣙ 5mm10mm ࡟ษࡾฟࡋࡓᚋࠊ900㹼
1100Υ5min ಖᣢᚋࠊࡑࢀࡒࢀỈ෭㸦WQ㸧ࠊ✵෭㸦AC㸧ཬࡧ⅔෭㸦FC㸧ࡢ⇕ฎ⌮ࢆ᪋ࡋࡓࠋࡑ
ࡢᚋࠊ࢚࣓࣮ࣜ⣬࡟࡚㸡1000 ࡲ࡛‵ᘧ◊☻ࡋࡓᚋࠊ㙾㠃◊☻ࢆ⾜ࡗࡓࠋ◪㓟ࢭ࣮ࣝࣟࢫࣇ࢕࣒ࣝ
ࢆ ㈞ ࡾ ௜ ࡅࠊ ᪥ ᮏ ཎ Ꮚຊ 㛤 Ⓨ ᶵ ᵓࡢ ↷ ᑕ タ ഛ
JRR-3 ࡟࡚ 40sec ࡢ୰ᛶᏊ↷ᑕࢆ⾜ࡗࡓࠋ↷ᑕᚋࠊࣇ࢕࣒ࣝࡢࡳࢆ๤㞳ࡋࠊ2.5N ࡢ NaOH ⁐ᾮ୰࡛࢚ࢵࢳࣥࢢฎ⌮ࢆ⾜࠸ࠊ஝⇱ᚋࠊගᏛ㢧ᚤ㙾࡛ࣇ࢕࣒ࣝ⾲㠃ࡢ ATE ീࢆ᧜ᙳࡋࡓࠋ࡞࠾ࠊ㯮࠸ࢥࣥࢺࣛࢫࢺࡣࡍ࡭࡚࣎ࣟࣥ⏤᮶ࡢࢥࣥࢺࣛࢫࢺ
࡛࠶ࡿࠋ

Table 1 ✚ᒙẕᮦࡢ໬Ꮫ⤌ᡂ㸦mass㸣㸧
C

Si

Mn

P

S

Cu

Ni

Cr

Mo

V

B

N

WT780C

0.13

0.25

0.92

0.012

0.001

0.18

0.02

0.83

0.32

0.02

0.0080㸫

SCM415

0.13

0.22

0.66

0.009

0.003

0.02

0.02

0.95

0.16

㸫

<0.0001

㸫

SPCC

0.03

0.01

0.16

0.009

0.010

㸫

㸫

㸫

㸫

㸫

<0.0001㸫

SUS420J2

0.32

0.79

0.60

0.025

0.002

㸫

㸫

13.52

㸫

㸫

0.0002㸫

SUS304

0.06

0.43

1.06

0.023

0.003

㸫

8.04

18.18

㸫

㸫

0.0011㸫

SUS304N2

0.05

0.76

1.91

0.029

0.000

㸫

7.75

18.52

㸫

㸫

0.00050.21

㸱㸬ᐇ㦂⤖ᯝ ྛ᮲௳࡛⇕ฎ⌮ࡋࡓᚋࡢ ATE ീࢆ Fig.2㹼
Fig.19 ࡟♧ࡍࠋ௨ୗࠊ(1)㹼(6)࡟ྛ✚ᒙẕᮦ࡟ࡘ࠸࡚ࡢ⤖ᯝࢆ㏙࡭ࡿࠋ
㸦㸯㸧WT780C
 WT780C ࡟ࡣ࣎ࣟࣥࡀ 80ppm ῧຍࡉࢀ࡚࠸ࡿࠋ
900Υຍ⇕࡛ࡣ Fig.2 ࡟♧ࡋࡓࡼ࠺࡟Ỉ෭㸦WQ㸧

㹼⅔෭㸦FC㸧ࡢ⇕ฎ⌮᮲௳࡛ࡣ㢧ⴭ࡞࣎ࣟࣥࡢ೫
ᯒࡣㄆࡵࡽࢀ࡞࠿ࡗࡓࠋ1000Υຍ⇕࡛ࡣࠊFig.3
࡟♧ࡋࡓࡼ࠺࡟✵෭(AC)ฎ⌮࡟࠾࠸࡚ࣇ࢙ࣛ࢖
ࢺ⢏⏺࡬ࡢ࣎ࣟࣥࡢ㢧ⴭ࡞೫ᯒࡀㄆࡵࡽࢀࡓࡀࠊ
ࣇ࢙ࣛ࢖ࢺ⢏ᚄ࡟኱ࡁ࡞ᕪ㸦෌⤖ᬗ⢏࡜ᮍ෌⤖ᬗ⢏ࡢΰ⢏㸧ࡀㄆࡵࡽࢀࡿࠋ௚᪉ࠊWQ ฎ⌮࡟࠾࠸࡚ࡣ࣮࢜ࢫࢸࢼ࢖ࢺ㸦௨ୗࠊȚ㸧⢏⏺࡟┦ᙜࡍࡿ

JRR-3㸦Ẽ㏦⟶↷ᑕ㸧ࠊJRR-4㸦་⒪⏝↷ᑕ㸧ࠊATE㸦Ș⥺ࢺࣛࢵࢡ࢚ࢵࢳࣥࢢ㸧ἲࠊ㕲㗰ᮦᩱࠊ࣎ࣟࣥ≧ែศᕸほᐹ

6-1- 284 -

㻝㻞㻠

JAEA-Review 2013-040㡿ᇦ࡟ࠊࢃࡎ࠿ࡢ࣎ࣟࣥ೫ᯒࡀㄆࡵࡽࢀࡿࠋFC
ฎ⌮࡛ࡣ⢏⏺೫ᯒࡣᴟࡵ࡚ᑡ࡞࠸࡞ࡀࡽࠊᯒฟ≀ࡶࢃࡎ࠿࡟ㄆࡵࡽࢀࡿࠋ
 1100Υຍ⇕࡛ࡣࠊFig.4 ࡟♧ࡋࡓࡼ࠺࡟ 1000Υ࡜ྠࡌࡼ࠺࡟ AC ฎ⌮࡛ࡣࣇ࢙ࣛ࢖ࢺ⢏⏺࡬ࡢ࣎ࣟࣥࡢ㢧ⴭ࡞೫ᯒ࠾ࡼࡧ⢏⏺ᯒฟࠊ⢏ෆᯒฟ≀ࡀㄆࡵࡽࢀࠊ⢒⢏໬ࡋࡓ➼㍈ࣇ࢙ࣛ࢖ࢺ⢏ࡀከᩘㄆࡵࡽࢀࡿࠋFC ฎ⌮࡛ࡣࣇ࢙ࣛ࢖ࢺ⢏⏺࡬ࡢ೫ᯒࠊ
࡞࠸ࡋࡣ⢏ෆ࡟࣎ࣟࣥࡢᯒฟ≀࡛࠶ࡿ M23(CB)6ࠊ
Mo2(CB)ࠊV(CN)࡞࡝ࡀㄆࡵࡽࢀࡿࡀࠊ✀㢮࡟ࡘ࠸࡚ࡣ≉ᐃࡋ࡚࠸࡞࠸ࠋWQ ฎ⌮࡛ࡣ࡯࡜ࢇ࡝ࡢ
࣎ࣟࣥࡣ࣐ࢺࣜࢵࢡࢫ୰࡟ᅛ⁐ࡋ࡚࠾ࡾࠊ࣎ࣟࣥ
೫ᯒࡶᴟࡃࢃࡎ࠿ࡋ࠿ㄆࡵࡽࢀ࡞࠿ࡗࡓࠋ

㸦㸰㸧SCM415
 SCM415 ࡢ࣎ࣟࣥ㔞ࡣ 1ppm ࡛࠶ࡾࠊWT780C
࡟ẚ࡭࡚⣙ 1/80 ࡜ప࠸ࠋ900Υຍ⇕ࡣ Fig.5 ࡟♧ࡍࡼ࠺࡟ࣇ࢙ࣛ࢖ࢺ⢏⏺࡬ࡢ࣎ࣟࣥ೫ᯒࡣᑡ࡞
࠸ࠋ1000Υຍ⇕㸫WQࠊAC ฎ⌮࡛ࡣ Fig.6 ࡟♧ࡍࡼ࠺࡟࣎ࣟࣥ㔞ࡀᑡ࡞࠸ࡏ࠸࠿࣐ࢺࣜࢵࢡࢫ
ࡣ͆ࡲࡔࡽ≧͇࡟ぢ࠼ࡿࡀࣇ࢙ࣛ࢖ࢺ⢏⏺࡟࣎ࣟࣥ೫ᯒࡀㄆࡵࡽࢀࡿࠋ࡜ࡃ࡟ ACࠊFC ฎ⌮࡛ࡣᮍᅛ⁐ࡢᯒฟ≀㸦࡯࠺໬≀㸧ࡀከᩘㄆࡵࡽࢀࡓࠋ
1100Υຍ⇕㸫WQࠊAC ฎ⌮࡟࠾࠸࡚ࡣ Fig.7 ࡟♧ࡍࡼ࠺࡟ࠊࣇ࢙ࣛ࢖ࢺ⢏⏺࣭⢏ෆ࡬ࡢ࣎ࣟࣥࡢ
㢧ⴭ࡞೫ᯒ࡜ᯒฟࡀㄆࡵࡽࢀࡓࠋFC ฎ⌮࡛ࡣࣇ࢙ࣛ࢖ࢺ⢏⏺࡬ࡢ࣎ࣟࣥ೫ᯒࡣㄆࡵࡽࢀࡎࠊ⢏ෆ࡟ M3(CB)࡞࠸ࡋࡣ Fe23(CB)6 ࡀㄆࡵࡽࢀࡓࠋ

100ȣ㹫

(a)WQ

(b) AC(c) FC

Fig.2 WT780C ࡟࠾ࡅࡿ 900Υ-5min ຍ⇕Ѝ⇕ฎ⌮ᚋࡢ ATE ീ

100ȣ㹫

(a)WQ

(b) AC(c) FC

Fig.3 WT780C ࡟࠾ࡅࡿ 1000Υ-5min ຍ⇕Ѝ⇕ฎ⌮ᚋࡢ ATE ീ

100ȣ㹫

(a)WQ

(b) AC(c) FC

Fig.4 WT780C ࡟࠾ࡅࡿ 1100Υ-5min ຍ⇕Ѝ⇕ฎ⌮ᚋࡢ ATE ീ
JRR-3㸦Ẽ㏦⟶↷ᑕ㸧ࠊJRR-4㸦་⒪⏝↷ᑕ㸧ࠊATE㸦Ș⥺ࢺࣛࢵࢡ࢚ࢵࢳࣥࢢ㸧ἲࠊ㕲㗰ᮦᩱࠊ࣎ࣟࣥ≧ែศᕸほᐹ

6-1- 285 -

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JAEA-Review 2013-040

100ȣ㹫

(a)WQ

(b) AC(c) FC

Fig.5 SCM415 ࡟࠾ࡅࡿ 900Υ-5min ຍ⇕Ѝ⇕ฎ⌮ᚋࡢ ATE ീ

100ȣ㹫

(a)WQ
Fig.6(b) AC(c) FCSCM415 ࡟࠾ࡅࡿ 1000Υ-5min ຍ⇕Ѝ⇕ฎ⌮ᚋࡢ ATE ീ

100ȣ㹫

(a)WQ
Fig.7(b) AC(c) FCSCM415 ࡟࠾ࡅࡿ 1100Υ-5min ຍ⇕Ѝ⇕ฎ⌮ᚋࡢ ATE ീ㸦㸱㸧SPCC࣎ࣟࣥ㔞ࡣ<1ppm ௨ୗ࡜ప࠸ࠋSPCC ࡣⅣ⣲㔞ࡀ 0.03mass㸣࡜ᴟࡵ࡚ప࠸ࡓࡵ Fe3C ࡢᯒฟࡶᑡ࡞࠸ࠋFe-C ⣔ᖹ⾮≧ែᅗ㸦ࣇ࢙ࣛ࢖ࢺࡢ Cᅛ⁐㔞ࢆ 0.0218mass㸣࡜ࡋࡓ㸧࠿ࡽࠕ࡚ࡇࡢཎ
⌮࡛ࠖࣃ࣮ࣛ࢖ࢺࡢ⏕ᡂ㔞ࢆィ⟬ࡍࡿ࡜ࢃࡎ࠿࡟
1.1㸣⛬ᗘ࡛ࠊࣇ࢙ࣛ࢖ࢺ㔞ࡀ 98.9㸣࡛࠶ࡗࡓࠋ
࡯࠺໬≀࡜ࡋ࡚ࡣ Fe3(CB)ࡢᯒฟࡀ⪃࠼ࡽࢀࡿࠋ
900Υຍ⇕㸫WQࠊAC ฎ⌮ࡣ Fig.8 ࡟♧ࡍࡼ࠺࡟ᴟࢃࡎ࠿ࡢ⢏⏺ᯒฟ㸦ᮍᅛ⁐ᯒฟ≀㸧ࡀㄆࡵࡽ
ࢀࡓࡀࠊFC ฎ⌮࡛ࡣࣇ࢙ࣛ࢖ࢺ⢏⏺௜㏆ࡀᖏ≧࡟ኴࡃほᐹࡉࢀࡓࠋࡇࢀࡣ⢏⏺㏆ഐ࡟࣎ࣟࣥࡀᅛ

⁐≧ែ࡛ᒁᡤ೫ᯒࡋ࡚࠸ࡿ࡜⪃࠼ࡽࢀࡿࡀヲ⣽࡟ࡘ࠸࡚ࡣࢃ࠿ࡽ࡞࠸ࠋ
1000Υຍ⇕㸫WQࠊACࠊFC ฎ⌮ඹ࡟ Fig.9 ࡟♧ࡍࡼ࠺࡟ࠊ࡯࠺໬≀≧ࡢ⢏ෆᯒฟࡀ㢧ⴭ࡟ㄆࡵࡽࢀࡓࡀࠊ⢏⏺ᯒฟ≀ࡶㄆࡵࡽࢀࡓࠋ
1100Υຍ⇕࡛ࡣ Fig.10 ࡟♧ࡍࡼ࠺࡟࡯࠺໬≀ࡀ࣐ࢺࣜࢵࢡࢫ࡟ᅛ⁐ࡋࡓࡏ࠸࠿ࠊࣇ࢙ࣛ࢖ࢺ⢏ෆ࡟ぢࡽࢀࡓ⢏ෆᯒฟࡀῶࡗ࡚࠾ࡾࠊ900Υ࡜㓞ఝࡋࡓ⤌⧊࡟࡞ࡗ࡚࠸ࡓࠋࡇࡢࡓࡵ⢏⏺ᯒฟࡀ㩭᫂࡟ぢ࠼ࡿࡼ࠺࡟࡞ࡗࡓࠋSPCC ඲⯡࡟ࡘ࠸࡚ᣦ
᦬࡛ࡁࡿࡇ࡜ࡣࠊ㢧ⴭ࡞⢏⏺೫ᯒࡀㄆࡵࡽࢀ࡞࠿
ࡗࡓࡇ࡜࡛࠶ࡿࠋ

JRR-3㸦Ẽ㏦⟶↷ᑕ㸧ࠊJRR-4㸦་⒪⏝↷ᑕ㸧ࠊATE㸦Ș⥺ࢺࣛࢵࢡ࢚ࢵࢳࣥࢢ㸧ἲࠊ㕲㗰ᮦᩱࠊ࣎ࣟࣥ≧ែศᕸほᐹ

6-1- 286 -

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JAEA-Review 2013-040

100ȣ㹫

(a)WQ

(b) AC(c) FC

Fig.8 SPCC ࡟࠾ࡅࡿ 900Υ-5min ຍ⇕Ѝ⇕ฎ⌮ᚋࡢ ATE ീ

100ȣ㹫

(a)WQ

(b) AC
Fig.9

(c) FCSPCC ࡟࠾ࡅࡿ 1000Υ-5min ຍ⇕Ѝ⇕ฎ⌮ᚋࡢ ATE ീ

100ȣ㹫

(a)WQ
Fig.10(b) AC(c) FCSPCC ࡟࠾ࡅࡿ 1100Υ-5min ຍ⇕Ѝ⇕ฎ⌮ᚋࡢ ATE ീ㸦㸲㸧SUS420J2
 SUS420J2 ࡢ໬Ꮫ⤌ᡂࡣ 0.3C-13Cr ࡛࠶ࡾࠊ඾
ᆺⓗ࡞࣐ࣝࢸࣥࢧ࢖ࢺ⤌⧊ࢆ᭷ࡋ࡚࠸ࡿࠋ࣎ࣟࣥ
㔞ࡣ 2ppm ࡛࠶ࡗࡓࠋ
900Υຍ⇕࡛ࡣ FC ฎ⌮ࢆ㝖࠸࡚ Fig.11 ࡟♧ࡍࡼ࠺࡟ࠊᅽᘏ᪉ྥ࡟ఙࡧࡓ࣎ࣟࣥࢆྵࢇࡔኚᙧᖏ
ࡀㄆࡵࡽࢀࡿࠋࡇࡢኚᙧᖏ࡟ἢ࠺ࡼ࠺࡟࣎ࣟࣥࡢ
೫ᯒࠊ࡞࠸ࡋࡣᯒฟ≀ࡀほᐹࡉࢀࡓࠋࡇࡢኚᙧᖏ
ࡣ㘫㐀᫬࡟Ⓨ⏕ࡋࡓࢫࢸࣥࣞࢫ㗰ࡢᡂศ೫ᯒࡀ
⏕ࡌࡓࡶࡢࠊ࠶ࡿ࠸ࡣȚ┦୰࡟ṧ␃ࡋࡓ  ࣇ࢙ࣛ࢖ࢺ┦ࡢྍ⬟ᛶࡶ࠶ࡿࡀヲ⣽ࡣ୙࡛᫂࠶ࡿࠋࡲࡓࠊࡼࡃほᐹࡍࡿ࡜࣎ࣟࣥࡀ೫ᯒࡋࡓࣇ࢙ࣛ࢖ࢺ⢏⏺ࡶほᐹ࡛ࡁࡿࠋ

1000Υຍ⇕㸫WQࠊACࠊFC ฎ⌮࡟࠾࠸࡚ࡣ
Fig.12 ࡟♧ࡍࡼ࠺࡟ࠊ900Υ࡛ほᐹࡉࢀࡓࡼ࠺࡞
ኚᙧᖏࡀほᐹ࡛ࡁࡿࠋࡲࡓ࣮࢜ࢫࢸࢼ࢖ࢺ⤖ᬗ㸦ȭ300ȣ㹫㸧⢏⏺࡟೫ᯒࡋࡓ࣎ࣟࣥ೫ᯒࡶほᐹ࡛ࡁࡿࠋ1100Υຍ⇕㸫WQ ฎ⌮࡛ࡣ Fig.13 ࡟♧ࡍࡼ࠺࡟ኚᙧᖏ࡬ࡢ࣎ࣟࣥ೫ᯒࡣῶᑡࡋࠊ⢏⏺೫ᯒ࡜⢏ෆᯒฟࡀほᐹ࡛ࡁࡿࠋAC ฎ⌮࡛ࡣ㘫㐀᫬
࡟Ⓨ⏕ࡋࡓ࡜⪃࠼ࡽࢀࡿኚᙧᖏ࡬ࡢ࣎ࣟࣥ೫ᯒ
ࡀ㢧ⴭ࡛࠶ࡗࡓࠋࡋࡓࡀࡗ࡚ኚᙧᖏ࡬ࡢ࣎ࣟࣥ೫
ᯒࡣࠊ900㹼1100Υ-WQࠊAC ฎ⌮࡛ㄆࡵࡽࢀࡓࠋ
FC ฎ⌮࡛ࡣ 1000Υฎ⌮ࡢࡳ࡛ࠊኚᙧᖏ࡬ࡢ࣎ࣟ
ࣥ೫ᯒࡀㄆࡵࡽࢀࡓࠋࡇࡢ⌮⏤࡟ࡘ࠸࡚ࡣࡼࡃࢃ
࠿ࡽ࡞࠸ࠋ

JRR-3㸦Ẽ㏦⟶↷ᑕ㸧ࠊJRR-4㸦་⒪⏝↷ᑕ㸧ࠊATE㸦Ș⥺ࢺࣛࢵࢡ࢚ࢵࢳࣥࢢ㸧ἲࠊ㕲㗰ᮦᩱࠊ࣎ࣟࣥ≧ែศᕸほᐹ

6-1- 287 -

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JAEA-Review 2013-040

100ȣ㹫

(a)WQ

(b) AC(c) FC

Fig.11 SUS420J2 ࡟࠾ࡅࡿ 900Υ-5min ຍ⇕Ѝ⇕ฎ⌮ᚋࡢ ATE ീ

100ȣ㹫

(a)WQ
Fig.12(b) AC(c) FCSUS420J2 ࡟࠾ࡅࡿ 1000Υ-5min ຍ⇕Ѝ⇕ฎ⌮ᚋࡢ ATE ീ

100ȣ㹫

(a)WQ
Fig.13(b) AC(c) FCSUS420J2 ࡟࠾ࡅࡿ 1100Υ-5min ຍ⇕Ѝ⇕ฎ⌮ᚋࡢ ATE ീࡇࢀࡽࡢ⤖ᯝࠊSUS420-J2 ࢆ㝖࠸࡚⢏⏺೫ᯒ࡟ཬࡰࡍ↝ධࢀ ᗘࡢᙳ㡪ࡣ㢧ⴭ࡛࠶ࡗࡓࠋࡇࢀ
ࡽࡢ㗰ࡣ 1000Υ-5min ຍ⇕ࡢ AC ฎ⌮࡛ࠊ࣎ࣟࣥ
ࡢ⢏⏺೫ᯒࡀᙉ࠿ࡗࡓࡀࠊWQ ฎ⌮࠾ࡼࡧ FC ฎ⌮࡛ࡣ⢏⏺೫ᯒࡣᙅ࠿ࡗࡓࠋࡇࢀࡣ Fig.14(a)࠾ࡼ
ࡧ(b)࡟♧ࡋࡓࡼ࠺࡟ࠊᖹ⾮೫ᯒࡢྍ⬟ᛶࡀ⪃࠼ࡽ
ࢀࡿࠋFig.14(a)ࡢሙྜࡣ AC ฎ⌮࡛㢧ⴭ࡞⢏⏺೫ᯒࡀぢࡽࢀࠊFig14(b)ࡢሙྜ࡛ࡣ㧗࠸↝ධࢀ ᗘ࡯࡝⢏⏺೫ᯒࡀᙉࡃ࡞ࡿࠋࡋࡓࡀࡗ࡚ᖹ⾮೫ᯒࡢྍ⬟ᛶࡀ㧗࠸ࠋ௚᪉ࠊWilliams ࡽ 3)ࡣ Fig.14(c)࡟♧ࡋࡓࡼ࠺࡟↝ධࢀ㛤ጞ ᗘࡢపୗ࡟క࠸࣎
ࣟࣥࡢ⢏⏺೫ᯒࡢ⛬ᗘࡀῶᑡࡋࡓࡇ࡜࡟ࡼࡗ࡚ࠊ
Ț┦ࡸȘ┦࡟ᣊࢃࡽࡎ⇕ฎ⌮୰࡟㠀ᖹ⾮೫ᯒ࡟ࡼࡗ࡚⏕ࡌࡿ࡜ሗ࿌ࡋ࡚࠸ࡿࠋ

(a)
(WQ)

‫(ۑ‬AC)

(FC)

(b)

(c)

Fig.14 B ࡢ⢏⏺೫ᯒࡀ㠀ᖹ⾮೫ᯒ 3)

JRR-3㸦Ẽ㏦⟶↷ᑕ㸧ࠊJRR-4㸦་⒪⏝↷ᑕ㸧ࠊATE㸦Ș⥺ࢺࣛࢵࢡ࢚ࢵࢳࣥࢢ㸧ἲࠊ㕲㗰ᮦᩱࠊ࣎ࣟࣥ≧ែศᕸほᐹ

6-1- 288 -

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JAEA-Review 2013-040ࡋࡓࡀࡗ࡚㠀ᖹ⾮೫ᯒࡣࠊ✵Ꮝ㸫⁐㉁ཎᏊ」ྜ
ᑐࡢ⢏⏺࡬ࡢ⛣ື࡟ࡼࡗ࡚೫ᯒࡀ⏕ࡌࡿ࡜ࡉࢀ
࡚࠸ࡿࠋࡲࡓࢥࢵࢺࣞࣝࡽࡣࠕ↝ධࢀ᫬࡟㐣㣬࿴✵Ꮝ㸦ཎᏊ✵Ꮝ㸧ࡀ⢏⏺࡟⛣ືࡍࡿࡢ࡟క࠸ࠊ⁐㉁ඖ⣲ࡀ⢏⏺࡟⛣ືࡍࡿ㠀ᖹ⾮೫ᯒࠖㄝࢆᥦၐࡋ
࡚࠸ࡿࡀࠊ⇕ฎ⌮᮲௳ࢆኚ࠼࡚ほᐹࡋࡓ⤖ᯝࠊ
WT780C ࡸ SCM415 ࡞࡝ࡢ㗰ࡣᖹ⾮೫ᯒࡢྍ⬟ᛶࡀ㧗࠸ࠋ㸦㸳㸧SUS304
࣎ࣟࣥ㔞ࡣ 11ppm ࡜ẚ㍑ⓗ㧗࠸ࠋ900Υຍ⇕࡛ࡣ Fig.15 ࡟♧ࡍࡼ࠺࡟ WQࠊACࠊFC ฎ⌮࡟࠾࠸࡚ࠊ➼㍈⢏ࡢᙧែࢆ᭷ࡋࡓȚ⢏⏺࡟㢧ⴭ࡞࣎ࣟࣥ೫ᯒ࡜ᯒฟࡀㄆࡵࡽࢀࡓࠋࡘࡲࡾ 900Υ࡛ࡣ࣎ࣟࣥࡣ 100㸣෌ᅛ⁐ࡋ࡚࠸࡞࠸ࡇ࡜ࢆ♧ࡋ࡚࠸ࡿࠋ
ࡉࡽ࡟Ț⢏ෆ࡟ࡶ M23(CB)6 ࡜⪃࠼ࡽࢀࡿᯒฟ≀ࡀከࡃぢࡽࢀࡿࠋ⤖ᬗ⢏ᚄࡣ 30㹼80ȣ㹫࡛ΰ⢏ࡋ࡚࠸ࡿࠋFC ฎ⌮࡛ࡣ͆ࡲࡔࡽ≧͇࡛࠶ࡿࡀ⢏ෆ೫ᯒࡀぢࡽࢀࡓࠋ
1000Υຍ⇕㸫WQ ฎ⌮࡛ࡣ Fig.16 ࡟♧ࡍࡼ࠺࡟Ț⢏⏺࡟ᴟࢃࡎ࠿࡟࣎ࣟࣥ೫ᯒࡀㄆࡵࡽࢀࡿࠋ
AC ฎ⌮࡛ࡣ 900Υ⇕ฎ⌮࡟ẚ࡭࡚Ț⢏ᚄࡀ኱ࡁࡃ࡞ࡗ࡚࠾ࡾࠊȚ⢏⏺࡬ࡢ࣎ࣟࣥ೫ᯒ࡜ᯒฟࡶㄆ
ࡵࡽࢀࡿࠋFC ฎ⌮࡛ࡣȚ⢏⏺࡬ࡢ೫ᯒ࡜⢏ෆᯒฟࢆㄆࡵࡓࠋ୍᪉ࠊ1100Υ㸫WQࠊAC ฎ⌮࡛ࡣ
Fig.17 ࡟♧ࡍࡼ࠺࡟࣎ࣟࣥࡢȚ࣐ࢺࣜࢵࢡࢫ࡬
ࡢᅛ⁐ࡀ⏕ࡌࠊ⢏⏺೫ᯒࠊ⢏ෆᯒฟ࡜ࡶ࡟ῶᑡࡍ
ࡿࠋࡋ࠿ࡋ FC ฎ⌮࡛ࡣࠊȚ⢏ࡢ⢒⢏໬࡜⢏⏺࡬ࡢ࣎ࣟࣥ೫ᯒ࡜⢏ෆᯒฟࢆㄆࡵࡓࠋ
㸦㸴㸧SUS304N2
SUS304 ࡜ẚ࡭ࡿ࡜ N 㔞ࡀ 0.2mass㸣࡜㧗ࡃࠊ࣎ࣟࣥ㔞ࡶ 5ppm ࡛࠶ࡗࡓࠋ900Υ-WQࠊACࠊFC ฎ⌮࡜ࡶ࡟ Fig.18 ࡟♧ࡍࡼ࠺࡟ࠊ࣎ࣟࣥ೫ᯒ
ࡣᴟࡃࢃࡎ࠿࡛࠶ࡿࠋ1000Υ-WQࠊAC ฎ⌮࡛ࡶ
Fig.19 ࡟♧ࡍࡼ࠺࡟࣎ࣟࣥ೫ᯒࡣࢃࡎ࠿࡛࠶ࡿࠋ
FC ฎ⌮࡛ࡣࠊᅽᘏ᪉ྥ࡟ఙࡧࡓᮍ෌⤖ᬗ⢏ࡢᙧែࢆ࿊ࡋ࡚࠾ࡾࠊȚ⢏⏺࡬ࡢ࣎ࣟࣥ೫ᯒࡀぢࡽࢀ
ࡿࠋ1100Υ㸫WQ ฎ⌮࡛ࡣ Fig.20 ♧ࡍࡼ࠺࡟㢧ⴭ࡞Ț⢏⏺࡬ࡢ೫ᯒࡣㄆࡵࡽࢀ࡞࠿ࡗࡓࡀࠊACฎ⌮࡟࠾࠸࡚࣎ࣟࣥࡢ⢏⏺೫ᯒࡀࢃࡎ࠿࡟ㄆࡵ
ࡽࢀࡿࠋFC ฎ⌮࡟࡞ࡿ࡜ 1000Υ࡛ぢࡽࢀࡓᅽᘏ
᪉ྥ࡟ఙࡧࡓఙ㛗⢏⏺ࡣࠊ➼㍈Ț⢏࡟ኚࢃࡾࠊ⢏ෆᯒฟࡶࢃࡎ࠿࡟ㄆࡵࡽࢀࡿࡼ࠺࡟࡞ࡿࠋ

100ȣ㹫

(a)WQ

(b) AC(c) FC

Fig.15 SUS304 ࡟࠾ࡅࡿ 900Υ-5min ຍ⇕Ѝ⇕ฎ⌮ᚋࡢ ATE ീ

100ȣ㹫

(a)WQ
Fig.16(b) AC(c) FC

SUS304 ࡟࠾ࡅࡿ 1000Υ-5min ຍ⇕Ѝ⇕ฎ⌮ᚋࡢ ATE ീ

JRR-3㸦Ẽ㏦⟶↷ᑕ㸧ࠊJRR-4㸦་⒪⏝↷ᑕ㸧ࠊATE㸦Ș⥺ࢺࣛࢵࢡ࢚ࢵࢳࣥࢢ㸧ἲࠊ㕲㗰ᮦᩱࠊ࣎ࣟࣥ≧ែศᕸほᐹ

6-1- 289 -

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JAEA-Review 2013-040

100ȣ㹫

(a)WQ
Fig.17(b) AC(c) FC

SUS304 ࡟࠾ࡅࡿ 1100Υ-5min ຍ⇕Ѝ⇕ฎ⌮ᚋࡢ ATE ീ

100ȣ㹫

(a)WQ
Fig.18(b) AC(c) FC

SUS304N2 ࡟࠾ࡅࡿ 900Υ-5min ຍ⇕Ѝ⇕ฎ⌮ᚋࡢ ATE ീ

100ȣ㹫

(a)WQ
Fig.19(b) AC(c) FC

SUS304N2 ࡟࠾ࡅࡿ 1000Υ-5min ຍ⇕Ѝ⇕ฎ⌮ᚋࡢ ATE ീ

100ȣ㹫

(a)WQ
Fig.20(b) AC(c) FC

SUS304N2 ࡟࠾ࡅࡿ 1100Υ-5min ຍ⇕Ѝ⇕ฎ⌮ᚋࡢ ATE ീ

JRR-3㸦Ẽ㏦⟶↷ᑕ㸧ࠊJRR-4㸦་⒪⏝↷ᑕ㸧ࠊATE㸦Ș⥺ࢺࣛࢵࢡ࢚ࢵࢳࣥࢢ㸧ἲࠊ㕲㗰ᮦᩱࠊ࣎ࣟࣥ≧ែศᕸほᐹ

6-1- 290 -

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JAEA-Review 2013-040㸳㸬⤖ㄽࡣ‫ۑ‬㸸strong㸦ᙉ㸧ࠊ‫ڹ‬㸸weak㸦ᙅ㸧ࠊ㸸very weakྛ✚ᒙẕᮦ࡟࠾ࡅࡿ࣎ࣟࣥࡢ⢏⏺೫ᯒࠊ⢏⏺ᯒ㸦ᴟࡵ࡚ᙅ㸧ࢆ♧ࡋ࡚࠸ࡿࠋ

ฟ࠾ࡼࡧ⢏ෆᯒฟࡢ≧ἣࢆ Table 2 ࡟♧ࡍࠋグྕTable 2. ྛ✚ᒙẕᮦ࡟࠾ࡅࡿ࣎ࣟࣥࡢ⢏⏺೫ᯒࠊ⢏⏺ᯒฟ࠾ࡼࡧ⢏ෆᯒฟ
㗰✀䉰㻌

⇕ฎ⌮㻌

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᮲௳

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                      ‫ۑ‬㸸strong ‫ڹ‬㸸weak 㸸very weak    
JRR-3㸦Ẽ㏦⟶↷ᑕ㸧ࠊJRR-4㸦་⒪⏝↷ᑕ㸧ࠊATE㸦Ș⥺ࢺࣛࢵࢡ࢚ࢵࢳࣥࢢ㸧ἲࠊ㕲㗰ᮦᩱࠊ࣎ࣟࣥ≧ែศᕸほᐹ

6-1- 291 -

㻝㻟㻝

JAEA-Review 2013-040◊✲ 2㸸ATE ἲ࡟ࡼࡿ✚ᒙᮦࡢ࣎ࣟࣥศᕸ࡜
ᙉᗘ┦㛵ᛶ㸯㸬ࡣࡌࡵ࡟
◊✲ 1 ࡛ࡣྛ✀✚ᒙẕᮦ࡟࠾ࡅࡿ⇕ฎ⌮ࡢᙳ㡪࡜ࠊ࣎ࣟࣥ≧ែศᕸ࡟ࡘ࠸࡚ㄪ࡭ࡓࠋࡇࡇ࡛ࡣ㌾㉁㸭◳㉁㸭㌾㉁ᮦࢆࢧࣥࢻ࢖ࢵࢳ࡟ࡋࡓ࡜ࡁࡢ
⏺㠃㸦௜㏆㸧࡟࠾ࡅࡿ࣎ࣟࣥࡢ≧ែศᕸࢆㄪ࡭ࡓࠋ
࡜ࡃ࡟࣮࢜ࢫࢸࢼ࢖ࢺ(Ț)㸭ࣇ࢙ࣛ࢖ࢺ⏺㠃ࡢ೫ᯒ࠾ࡼࡧᯒฟ≧ែࢆ▱ࡿࡓࡵ࡟ ATE㸦Ș⥺ࢺࣛࢵࢡ࢚ࢵࢳࣥࢢ㸧ἲࢆ㥑౑ࡋ࡚ᐇ㦂ࢆ⾜ࡗࡓࠋⴭ⪅ࡽࡣࡇࢀࡲ࡛ࡶ ATE ἲࡣࠊ1ppm ⃰ᗘ௨ୗࡢ࡛࣎ࣟࣥࡶᤊ࠼ࡿࡇ࡜ࡢ࡛ࡁࡿ᝟ሗ※࡜ࡋ࡚၏୍࡞ᐇ㦂ᡭẁ࡛࠶ࡿࡇ࡜ࠊࡲࡓ㗰୰࣎ࣟࣥࡢ≧ែศᕸࢆほᐹ࡛ࡁࡿ࣓ࣜࢵࢺࢆሗ࿌ࡋ࡚ࡁࡓ 1)ࠋ
㸰㸬ᐇ㦂᪉ἲ ࣇ࢓࢖ࣥ࢝ࢵࢱ࣮ࢆ⏝࠸࡚✚ᒙᮦࡢཌࡉࢆ 1.5
㹼2mm ࡟ษࡾฟࡋࡓᚋࠊFig.21 ࡟♧ࡍࡼ࠺࡟▷෉ᙧࡢヨ㦂∦ 3㹼4 ಶࢆ࢔ࣟࣥ࢔ࣝࣇ࢓᥋╔๣࡛㈞ࡾ௜ࡅࡓࠋࡋࡓࡀࡗ࡚ほᐹ㠃ࡣࡍ࡭࡚✚ᒙ᩿㠃࡛࠶ࡿࠋヨᩱ 1 ಶࡢ኱ࡁࡉࡣ⣙㸦5㹼8㸧mm
(10~12)mm ࡛࠶ࡿࠋ㙾㠃◊☻ᚋࠊ◪㓟ࢭ࣮ࣝࣟࢫࣇ࢕࣒ࣝࢆ㈞ࡾ௜
ࡅࠊཎᏊຊ㛤Ⓨᶵᵓࡢ་⒪⏝↷ᑕタഛ JRR-4 ࡟࡚
12h ࡢ୰ᛶᏊ↷ᑕࢆ⾜ࡗࡓࠋ↷ᑕᚋࠊࣇ࢕࣒ࣝࡢ
ࡳࢆ๤㞳ࡋࠊ2.5N ࡢ NaOH ⁐ᾮ୰࡛࢚ࢵࢳࣥࢢ
ฎ⌮ࢆ⾜࠸ࠊ஝⇱ᚋࠊගᏛ㢧ᚤ㙾࡛ࣇ࢕࣒ࣝ⾲㠃ࡢ ATE ീࢆ᧜ᙳࡋࡓࠋ࡞࠾ࠊ㯮࠸ࢥࣥࢺࣛࢫࢺ
ࡣࡍ࡭࡚࣎ࣟࣥ⏤᮶ࡢࢥࣥࢺࣛࢫࢺ࡛࠶ࡿࠋ

Fig.21 ATE ⏝✚ᒙᮦࡢᵓᡂ
㸱㸬✚ᒙヨᩱࡢ✀㢮
#1013㸦SUS304:5mm4L㸭WT780C:6mm
3L ࡟ Ni ⷧᯈ 0.5mm ࢆ✚ᒙࡋࡓ඲ 7 ᒙ㸧ࢆึᮇ
ᯈཌ 41mm ࡜ࡋࠊ᭱⤊ 1mm ཌ(ᅽୗ⋡ 97.5㸣)࡟

ࡋࡓࠋWT780C ࡣึᮇᯈཌ 9mmࠊ12mm ࡢࡶࡢࢆ 6mm ࡟ㄪ〇ࡋ࡚⏝࠸࡚࠸ࡓࠋ࣎ࣟࣥ㔞ࡣ
80ppm ࡛࠶ࡗࡓࠋ⇕ฎ⌮ࡣ 900Υ-2minࠊ1000Υ
-2minࠊ1000Υ-30minࠊ60minࠊ120min ฎ⌮ࡋࡓヨᩱ࡟ࡘ࠸࡚ㄪ࡭ࡓࠋSUS304㸭SCM415 ࡣ
19L ࡜ࠊ3L ࡢヨᩱࢆ⏝࠸ࡓࠋSUS304 ࡢ࣎ࣟࣥ㔞ࡣ 2ppmࠊSCM415 ࡣ<1ppm ࡛࠶ࡗࡓࠋNi ࡢ࣎ࣟࣥ㔞ࡣ୙࡛᫂࠶ࡿࠋ⇕ฎ⌮ࡣ 900Υࠊ1000Υࠊ
1100Υ࡛ྛ 5min ࢆ᪋ࡋࡓࠋ
㸲㸬ᐇ㦂⤖ᯝ
㸦㸯㸧#1013㸦SUS304㸭Ni㸭WT780C㸧
#1013 ࡢ 900Υ-2min Ỉ෭ᮦࢆ Fig.22 ࡟♧ࡍࠋ᥋╔ᒙഃ࠿ࡽୖ࡟ྥ࠿ࡗ࡚ SUS304ࠊNiࠊWT780
CࠊNiࠊSUS304࣭࣭࣭ࡢ㡰࡟㸵ᒙࡀ✚ᒙࡉࢀ࡚࠸ࡿࠋSUS304ࠊWT780C ࡢ࣎ࣟࣥ㔞ࡣࡑࢀࡒࢀ
80ppm ࡜ 11ppm ࡛࠶ࡾࠊ࣎ࣟࣥῧຍ㔞࡟኱ᕪࡀ࠶ࡿࠋࡋ࠿ࡋỈ෭ࡢࡓࡵ୧⪅࡟኱ࡁ࡞ᕪࡣㄆࡵࡽ
ࢀࡎࠊఝࡓࡼ࠺࡞ࢥࣥࢺࣛࢫࢺࢆ♧ࡋࡓࠋ
 900Υ-2min ࡛ࡣ㢧ⴭ࡞⢏⏺ᯒฟࠊ⢏ෆᯒฟࡣぢࡽࢀ࡞࠿ࡗࡓࡀࠊSUS304㸭Ni ⏺㠃࡜ WT780C
㸭Ni ⏺㠃࡟࣎ࣟࣥࡢ೫ᯒࡽࡋࡁࢥࣥࢺࣛࢫࢺࡀ
☜ㄆ࡛ࡁࡓࡀࠊSUS304 ഃ࡜ WT780C ഃ࡟⃰໬ࡀぢࡽࢀࡿࠋ௚᪉ࠊNi ᒙ࡟ࡣ࣎ࣟࣥࡀ⃰໬ࡋ࡚࠸࡞࠸ⓑ࠸ࢥࣥࢺࣛࢫࢺࡀほᐹࡉࢀࡓࠋᘬᙇᙉࡉࡣ
964MPaࠊఙࡧࡣ⣙ 21㸣࡛࠶ࡗࡓࠋ
⤖ᬗ⢏⏺࡬ࡢ࣎ࣟࣥ೫ᯒࡣ WT780CࠊSUS304
ඹ࡟ప࠸ࡀȚ⢏⏺࡬ࡢ㢧ⴭ࡞೫ᯒࡀ☜ㄆ࡛ࡁࡓࠋ
⯆࿡࠶ࡿ▱ぢࡣ Ni ࢩ࣮ࢺࢆ㊬࠸࡛ࠊȚ⢏⏺ࡢ୍య໬ࡀほᐹ࡛ࡁࡓࡇ࡜࡛࠶ࡿࠋFig.23 ࡣࠊFig.22
ࡢ ATE ീ࡟ᡭ᭩ࡁ࡛Ț⢏⏺ࢆࢺ࣮ࣞࢫࡋࡓࡶࡢ
࡛࠶ࡿࠋࡇࡢ⏺㠃ᙧᡂࡣࠕ㌾㉁ᒙ࡜◳㉁ᒙࡀ෌⤖ᬗ࠾ࡼࡧȘЍȚኚែࢆ⤒࡚ࠊȚ⢏ࡢ୍య໬ࠖࡀぢࡽࢀࡓഐド࡟࡞ࡗ࡚࠸ࡿࠋࡋ࠿ࡋ#1013 ✚ᒙᮦ࡟
ࡣ Ni ࢩ࣮ࢺ㸦C ࡢᣑᩓ㞀ቨ㸧ࡀࢡࣛࢵࢻࡉࢀ࡚
࠸ࡿࡀࠊȚ⢏ࡢ୍య໬ࢆ㜼Ṇࡍࡿࡇ࡜࡟ Ni ࡣ㛵୚ࡋ࡚࠸࡞࠸ࡇ࡜ࢆ♧၀ࡋ࡚࠸ࡿࠋ
ࡲࡓࠊ1000Υ-2min Ỉ෭ᮦࡶ Fig.24 ࡟♧ࡋࡓࡼ࠺࡟࡯࡜ࢇ࡝ྠࡌ⤖ᯝ࡛࠶ࡗࡓࡀ 304/Niࠊ
Ni/WT780C ⏺㠃ࡢ⢏⏺೫ᯒࡣቑࡋࡓࠋࡕ࡞ࡳ࡟
࣎ࣟࣥࡣȚ-Fe ୰࡛ࡣ౵ධᆺඖ⣲࡜ࡋ࡚ᅛ⁐ࡋࠊȘ-Fe ୰࡛ࡣ⨨᥮ᆺඖ⣲࡟㏆࠸ᣑᩓಀᩘࢆࡶࡘࡇ
࡜ࡀ▱ࡽࢀ࡚࠸ࡿࠋ
 WT780C ࠾ࡼࡧ SUS304 ẕᮦࡣ◊✲ 1 ࡢ࡜ࡁࡣ 900Υ-5min ຍ⇕࡛࠶ࡾࠊ◊✲ 2 ࡛ࡣ 900Υ
-2min ࡢ⇕ฎ⌮࡛࠶ࡾࠊ⇕ฎ⌮᫬㛫ࡢᕪࡣ 3min

JRR-3㸦Ẽ㏦⟶↷ᑕ㸧ࠊJRR-4㸦་⒪⏝↷ᑕ㸧ࠊATE㸦Ș⥺ࢺࣛࢵࢡ࢚ࢵࢳࣥࢢ㸧ἲࠊ㕲㗰ᮦᩱࠊ࣎ࣟࣥ≧ែศᕸほᐹ

6-1- 292 -

㻝㻟㻞

JAEA-Review 2013-040࡛࠶ࡗࡓࠋFig.2 ࡢ⤖ᯝ࠿ࡽࠊWT780C ࡛ࡣࢃࡎ࠿࡞⢏⏺೫ᯒࠊFig.15 ࡢ SUS304 ࡟ࡣ㩭᫂࡞⢏⏺
೫ ᯒ ࡀ ほ ᐹ ࡛ ࡁ ࡓ ࠋ ࡋ ࠿ ࡋ Fig.22 ࡟ ♧ ࡋ ࡓ
SUS304 ✚ᒙᮦ࡟ࡣᴟࢃࡎ࠿ࡢ⢏⏺೫ᯒࡋ࠿ほᐹ࡛ࡁ࡞࠿ࡗࡓࠋࡇࡢ ATE ീࡢᕪࡀ࡞ࡐ⏕ࡌࡓࡢ࠿ࡣࡼࡃࢃ࠿ࡽ࡞࠸ࡀࠊ␗࡞ࡿࡢࡣຍ⇕᫬㛫࡜ほᐹ᪉ྥ࡟ຍ࠼ࠊ5mm ࠿ࡽ 0.1mm ࡟✚ᒙ㸦98㸣ᅽୗ⋡㸧ࡋࡓࡇ࡜࡛࠶ࡿࠋ

#1013 ࡢ N/A㸦෭ᘏࡲࡲ㸧ᮦ࡜ 1000Υࠊ30㹼
120min ຍ⇕ᚋỈ෭ࡋࡓ࡜ࡁࡢ ATE ീࢆ Fig.25
㹼Fig.27 ࡟♧ࡍࠋFig.22 ࡟♧ࡋࡓ 900Υ-2min ࡛ࡣ Ni ࢩ࣮ࢺ࡟ࡣ࣎ࣟࣥࡢ⢏⏺೫ᯒ࣭ᯒฟࡣほᐹ࡛ࡁ࡞࠿ࡗࡓࡀࠊN/A ᮦ㸦Fig.25㸧࡛ࡣ Ni ࢩ࣮ࢺ୰࡟࡯࠺໬≀㸦▮༳㸸㔠ᒓ㛫໬ྜ≀ Ni3CrB㸽㸧ࡢࢥࣥࢺࣛࢫࢺࡀぢࡽࢀࡓࠋࡲࡓ SUS304㸭Ni⏺㠃࡜ WT780C㸭Ni ⏺㠃࡟ࡶࠊࢃࡎ࠿࡞࣎ࣟࣥ

㼃㼀㻣㻤㻜㻯㻌

㼃㼀㻣㻤㻜㻯

㻺㼕㻌

㻺㼕㻌

䢳䢲䢲䪱䣯

㻿㼁㻿㻟㻜㻠㻌

䢳䢲䢲䪱䣯㻿㼁㻿㻟㻜㻠

᥋╔ᒙ㻌᥋╔ᒙ㻌Fig.22 SUS304㸭WT780C-7L㸸900Υ-2minЍWQ

Fig.25 1013㸸N/A㸦෭ᘏࡲࡲ㸧ᮦ㻿㼁㻿㻟㻜㻠㻌

㻿㼁㻿㻟㻜㻠 ᇦ㻌㻺㼕㻌㼃㼀㻣㻤㻜㻯㻌
㻺㼕㻌㻿㼁㻿㻟㻜㻠㻌

䢳䢲䢲䪱䣯

Fig.26 1013㸸1000Υ- 30minЍWQ

Fig. 23 Fig.19 ࡢȚ⢏⏺㸦ᡭ᭩ࡁ㸧㻿㼁㻿㻟㻜㻠 ᇦ㼃㼀㻣㻤㻜㻯㻌

㼃㼀㻣㻤㻜㻯㻌
㻺㼕㻌

㻺㼕㻌

䢳䢲䢲䪱䣯

䢳䢲䢲䪱䣯

㻿㼁㻿㻟㻜㻠㻌

㻿㼁㻿㻟㻜㻠㻌

᥋╔ᒙ㻌
Fig.24 SUS304㸭WT780C-7L㸸1000Υ-2minЍWQ

Fig.27 1013㸸1000Υ- 60minЍWQ

JRR-3㸦Ẽ㏦⟶↷ᑕ㸧ࠊJRR-4㸦་⒪⏝↷ᑕ㸧ࠊATE㸦Ș⥺ࢺࣛࢵࢡ࢚ࢵࢳࣥࢢ㸧ἲࠊ㕲㗰ᮦᩱࠊ࣎ࣟࣥ≧ែศᕸほᐹ

6-1- 293 -

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JAEA-Review 2013-040㻿㼁㻿㻟㻜㻠 ᇦ㻌㼃㼀㻣㻤㻜㻯㻌
㻺㼕㻌㻿㼁㻿㻟㻜㻠㻌

䢳䢲䢲䪱䣯㻿㻯㻹㻠㻝㻡㻌
㻿㼁㻿㻟㻜㻠㻌

᥋╔ᒙ㻌㻿㼁㻿㻟㻜㻠㻌

䢳䢲䢲䪱䣯

᥋╔ᒙ㻌

Fig.29 SUS304/SCM415-19L:N/A

Fig.28 1013㸸1000Υ- 120minЍWQ೫ᯒ࡜ᯒฟࡀ☜ㄆ࡛ࡁࡓࠋSUS304/WT780C ඲ᇦ࡟࠾࠸࡚࣎ࣟࣥࡢ⢏⏺೫ᯒࡣࡁࢃࡵ࡚ᙅ࠸ࡇ࡜
ࡀ☜ㄆ࡛ࡁࡓࠋ
1000Υ-30min Ỉ෭ᮦ㸦Fig.26㸧࡛ࡣ Ni ࢩ࣮ࢺ୰ࡢᯒฟ≀ࡀᾘኻࡋࡓࠋࡇࢀࡣ࣐ࢺࣜࢵࢡࢫ࡟࣎
ࣟࣥࡀᅛ⁐ࡍࡿࡇ࡜࡟ࡼࡗ࡚ WT780C ࠾ࡼࡧ
SUS304 ࡢ⢏⏺࣭⢏ෆᯒฟࡀࡼࡾ㩭᫂࡟࡞ࡗࡓ࡜
⪃࠼ࡽࢀࡿࠋWT780C ࡜ SUS304 ࡟⢏ෆᯒฟࡋࡓ⤖ᯝࠊᘬᙇᙉࡉࡣ 964MPaЍ711MPa ࡟పୗࡋࠊ
ఙࡧࡣ 21㸣Ѝ31㸣࡟ቑࡋࡓࠋࡲࡓ✚ᒙ୰ኸ௜㏆࡟఩⨨ࡋࡓ SUS304㸦304 ᇦ࡜⾲グ㸧࡟ࡣ⢏⏺ᯒฟ㸦࡯࠺໬≀㸧ࡀከᩘほᐹࡉࢀࡓࠋ
1000Υ-60min Ỉ෭ᮦ㸦Fig.27㸧࡛ࡣ SUS304
㸭Ni ⏺㠃ࠊWT780C㸭Ni ⏺㠃ࠊࡉࡽ࡟ Ni ࢩ࣮ࢺࢆࡣࡉࢇࡔ SUS ഃ࡟ࡼࡾ࣎ࣟࣥࡀ㢧ⴭ࡟೫ᯒࡍ
ࡿᵝᏊࢆ࿊ࡋࡓࠋࡇࢀࡣ WT780C ഃ࠿ࡽ SUS ഃ࡬ࡢ࣎ࣟࣥࡢᣑᩓࡀ⏕ࡌࡓࡶࡢ࡜⪃࠼ࡽࢀࡿࠋ
1000Υ-120min Ỉ෭ᮦ㸦Fig.28㸧࡛ࡣ SUS304
㸭 Ni ⏺ 㠃 ࠊ WT780C 㸭 Ni ⏺ 㠃 ࡣ ࡶ ࡜ ࡼ ࡾ ࠊ
WT780CࠊSUS304 ⢏ෆ࡟ከࡃࡢᯒฟ≀㸦࡯࠺໬≀㸧ࡀほᐹ࡛ࡁࡿࠋ࣎ࣟࣥࡢ≧ែศᕸ࠿ࡽࠊ࡯࠺
໬≀㸦M23(CB)6㸧ࡀᯒฟࡋ࡞࠸≧ែࡢᘬᙇᙉࡉࡀ
㧗࠸ഴྥࢆ♧ࡋࡓࠋࡲࡓ ATE ἲ࡟ࡼࡗ࡚✚ᒙᮦ࠶ࡿ࠸ࡣ Ni ࡢ᭷↓࡟ᣊࢃࡽࡎࠊȚ⤖ᬗ⢏ࡀ୍య໬ࡍࡿࡇ࡜ࡀ᫂ࡽ࠿࡟࡞ࡗࡓࠋ࡞࠾ࠊヨᩱ୰ኸ㒊ࡢ SUS304 ᇦࡼࡾࡶヨᩱ➃ࡢ SUS304 ࡟࠾࠸࡚ࠊ
࡯࠺໬≀ࡢᯒฟࡀᑡ࡞࠸⌮⏤ࡣ⬺࣎ࣟࣥࡢᙳ㡪࡜⪃࠼ࡽࢀࡿࠋ
㸦㸰㸧SUS304㸭SCM415-19LH
SUS304㸭SCM415㸦19 ᒙ㸧ࡢ N/A㸦෭ᘏࡲࡲ㸧ᮦ࡜ 900㹼1100Υ-5min ຍ⇕ᚋỈ෭ࡋࡓ࡜ࡁࡢ
ATE ീࢆ Fig.29㹼Fig.32 ࡟♧ࡍࠋN/A㸦Fig.29㸧㻿㼁㻿㻟㻜㻠㻌
㻿㻯㻹㻠㻝㻡㻌
㻿㼁㻿㻟㻜㻠㻌
᥋╔ᒙ㻌
Fig.30

SUS304/SCM415-19L:900Υ-5minЍWQ㻿㼁㻿㻟㻜㻠㻌
㻿㻯㻹㻠㻝㻡㻌
᥋╔ᒙ㻌㻿㼁㻿㻟㻜㻠㻌
Fig.31

䢳䢲䢲䪱䣯

䢳䢲䢲䪱䣯

SUS304/SCM415-19L:1000Υ-5minЍWQ࡛ࡣ SUS304㸭SCM415 ⏺㠃࡟ࠊࣂࣥࢻ≧ࡢ࣎ࣟࣥࡢ⢏⏺೫ᯒࡀ㩭᫂࡟ほᐹ࡛ࡁࡓࠋSUS304/SCM
415 ⏺㠃࡬ࡢ࣎ࣟࣥ೫ᯒࡀ㧗࠸ࠋࡇࡢࡇ࡜ࡀᘬᙇ
ᙉࡉࢆ 1197MPa㸦ఙࡧ 3.6㸣㸧࡟㧗ࡵࡓཎᅉ࡜⪃࠼ࡽࢀࡿࠋࡲࡓ SUS304 ࠾ࡼࡧ SCM415 ⢏ෆ࡟ࡣከࡃࡢ⢏⏺ᯒฟ࠾ࡼࡧ⢏ෆᯒฟࡀぢࡽࢀࡓࠋЍ༳࡛⾲グࡋࡓ SUS㸭SUS ⏺㠃࡟ࡣఙ㛗≧ࡢ࣎ࣟࣥࢆྵࢇࡔ௓ᅾ≀㸦࡯࠺໬≀࠿ࠊ࣎ࣟࣥࢆᅛ⁐ࡋ

JRR-3㸦Ẽ㏦⟶↷ᑕ㸧ࠊJRR-4㸦་⒪⏝↷ᑕ㸧ࠊATE㸦Ș⥺ࢺࣛࢵࢡ࢚ࢵࢳࣥࢢ㸧ἲࠊ㕲㗰ᮦᩱࠊ࣎ࣟࣥ≧ែศᕸほᐹ

6-1- 294 -

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JAEA-Review 2013-040㻿㼁㻿㻟㻜㻠㻌

㻿㻯㻹㻠㻝㻡㻌
㻿㼁㻿㻟㻜㻠㻌

䢳䢲䢲䪱䣯䢢

㻿㼁㻿㻟㻜㻠㻌

䢳䢲䢲䪱䣯䢢

㻿㼁㻿㻟㻜㻠㻌
᥋╔ᒙ㻌᥋╔ᒙ㻌Fig.32 SUS304/SCM415-19L:1100Υ-5minЍWQ

Fig.33ࡓ㔠ᒓ㛫໬ྜ≀㸧ࡀほᐹ࡛ࡁࡿࠋ
900Υ-5min ຍ⇕㸦Fig.31㸧ࡍࡿࡇ࡜࡟ࡼࡾࠊ
ࡇࡢ SUS㸭SUS ⏺㠃ࡢ௓ᅾ≀ࡣᾘኻࡍࡿഴྥ࡟
࠶ࡾࠊSUS304 ෆ࡟࠾ࡅࡿ࣎ࣟࣥࡢ⃰ᗘࡣᆒ㉁໬
ࡍࡿഴྥࢆ♧ࡍࠋࡇࡢࡇ࡜࡟ࡼࡾ SUS㸭SUS ࡢᐦ╔ᛶࡣྥୖࡍࡿࡀࠊ⤌⧊ⓗᅇ᚟㸦⤖ᬗ⢏ᚄࡢ⢒⢏໬ࠊ㌿఩ᐦᗘࡢῶᑡ࡞࡝㸧࡟ࡼࡾࠊᙉᗘࡣపୗ
ࡍࡿ࡜⪃࠼ࡽࢀࡿࠋ஦ᐇࠊᘬᙇᙉࡉࡣ 1197MPa
Ѝ755MPa ࡟పୗࡋࠊఙࡧࡣ 3.6㸣Ѝ27㸣࡟ቑࡋ
ࡓࠋ1000Υ-5min ຍ⇕㸦Fig.31㸧࡛ࡣࠊSUS304⢏ෆ࡟࠾࠸࡚࣎ࣟࣥࡢᆒ㉁໬ഴྥࡀࡉࡽ࡟㢧ⴭ࡟ ࡞ ࡿ ࠋ ᘬ ᙇ ᙉ ࡉ ࡀ 900 Υ -5min ຍ ⇕ ࡼ ࡾ755MPaЍ790Mpa ࡜ࠊࢃࡎ࠿࡟㧗࠿ࡗࡓ⌮⏤ࡣࠊࡇࡢ೫ᯒࡢ⛬ᗘ࡟౫Ꮡࡍࡿ࡜⪃࠼ࡽࢀࡿࠋ
1100Υ-5min ຍ⇕㸦Fig.32㸧࡛ࡣࠊSUS304 ࡜
SCM415 㛫ࡢ⃰ᗘ໙㓄ࡣ࡞ࡃ࡞ࡿഴྥࢆ♧ࡍࡀࠊ
7 ᒙ⏺㠃ࡢ SUS ᥋ྜ㡿ᇦ࡟࠾࠸࡚㢧ⴭ࡞࡯࠺໬
≀㸦▮༳࡛⾲グ㸧ࡀㄆࡵࡽࢀࡿࡼ࠺࡟࡞ࡿࠋᯒฟ
≀㸦࡯࠺໬≀㸧ࡣ඲యⓗ࡟ᚤ⣽࡛ࠊᆒ୍࡟ほᐹࡉࢀࡿࡼ࠺࡟࡞ࡿࡀ⢏⏺೫ᯒ࡜⢏⏺ᯒฟࡶぢࡽࢀࡿࡼ࠺࡟࡞ࡿࠋࡇࢀࡣ⢏⏺ᯒฟ࡞࠸ࡋࡣ⢏ෆᯒฟࡋ࡚࠸ࡓ࡯࠺໬≀ࡀࠊΥࡢ ᗘ࡛࣐ࢺࣜࢵࢡ
ࢫ࡟෌ᅛ⁐ࡋࡓࡓࡵ࡜⪃࠼ࡽࢀࡿࠋ

㸦3㸧SUS304㸭SCM415-3LH
SUS304㸭SCM415㸦3 ᒙ㸧ࡢ N/A㸦෭ᘏࡲࡲᮦ࡜ 900㹼1100Υ-5min ຍ⇕ᚋỈ෭ࡋࡓ࡜ࡁࡢ
ATE ീࢆ Fig.33㹼Fig.36 ࡟♧ࡍࠋN/A㸦Fig.33㸧
࡛ࡣ SUS304㸭SCM415 ⏺㠃࡟ࠊ19 ᒙ✚ᒙᮦ࡜ྠࡌࡼ࠺࡟࣎ࣟࣥࡢࣂࣥࢻ≧⢏⏺೫ᯒࡀ㩭᫂࡟ほᐹ࡛ࡁࡓࠋࡲࡓ SUS304 ࠾ࡼࡧ SCM415 ࡟ࡶ⢏⏺೫ᯒ࡜ࠊ㢧ⴭ࡞⢏⏺ᯒฟ࠾ࡼࡧ⢏ෆᯒฟࡀぢࡽࢀࡓࠋᘬᙇᙉࡉࡣ 1014MPaࠊఙࡧࡣ 1.3㸣࡛࠶

SUS304/SCM415-3L:N/A㻿㻯㻹㻠㻝㻡㻌

㻿㻯㻹㻠㻝㻡㻌

䢳䢲䢲䪱䣯䢢
᥋╔ᒙ㻌

Fig.34 SUS304㸭SCM415-3L㸸900Υ- 5minЍWQ㻿㻯㻹㻠㻝㻡㻌

䢳䢲䢲䪱䣯㻿㼁㻿㻟㻜㻠㻌
᥋╔ᒙ㻌

Fig.35 SUS304㸭SCM415-3L㸸1000Υ- 5minЍWQࡗࡓࠋᙉᗘࡀᙉ࠸ࡢࡣ SUS304/SCM415 ⏺㠃࡬ࡢ࣎ࣟࣥࡢ೫ᯒࡀᐤ୚ࡋ࡚࠸ࡿྍ⬟ᛶࡀ㧗࠸ࠋ
 900Υ-5min ຍ⇕㸦Fig.34㸧࡛ࡣࠊ␗┦⏺㠃ࡢ೫ᯒࡣᙅࡃ࡞ࡿࠋ➃㒊࡟࠶ࡿ SUS304 ࡢ⢏⏺೫ᯒࡣ ⃰ ໬ ࡍ ࡿ ഴ ྥ ࢆ ♧ ࡋ ࡓ ࠋ ࡇ ࢀ ࡣ SUS304 㸭
SCM415 ⏺㠃࡟೫ᯒࡋ࡚࠸ࡓ࣎ࣟࣥࡀ SUS304
ഃ࡟ᆒ୍ᣑᩓࡋࡓࡓࡵ࡜⪃࠼ࡽࢀࡿࠋࡲࡓ࣎ࣟࣥ

JRR-3㸦Ẽ㏦⟶↷ᑕ㸧ࠊJRR-4㸦་⒪⏝↷ᑕ㸧ࠊATE㸦Ș⥺ࢺࣛࢵࢡ࢚ࢵࢳࣥࢢ㸧ἲࠊ㕲㗰ᮦᩱࠊ࣎ࣟࣥ≧ែศᕸほᐹ

6-1- 295 -

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JAEA-Review 2013-040

812MPaЍ764MPa ࡟పୗࡋࠊఙࡧࡣ 24㸣Ѝ27㸣
࡟ቑࡋࡓࠋ
㸳㸬⤖ㄽ
(1) ⯆࿡࠶ࡿ▱ぢ࡜ࡋ࡚ࡣ Ni ࢩ࣮ࢺࢆ㊬࠸࡛ࠊ㻿㻯㻹㻠㻝㻡㻌
Ț⢏⏺ࡢ୍య໬ࡀほᐹ࡛ࡁࡓࠋȚ⢏ࡢ୍య໬࡟
ࡣ Ni ࡣ㛵୚ࡋ࡞࠸ࠋ
(2) #1013 ࡢ N/A㸦෭ᘏࡲࡲ㸧ᮦ࡟࠾࠸࡚ࠊNiࢩ࣮ࢺ୰࡟࡯࠺໬≀㸦Ni3CrB㸧ࡢࢥࣥࢺࣛࢫࢺ
㻿㼁㻿㻟㻜㻠㻌䢳䢲䢲䪱䣯᥋╔ᒙ㻌ࡀぢࡽࢀࡓࠋ࡯࠺໬≀ࡀᯒฟࡋ࡞࠿ࡗࡓ࡜ࡁࡢ
ᘬᙇᙉࡉࡣ㧗࠿ࡗࡓࠋ(3) SUS304㸭SCM415 ⏺㠃࡟ࡣ࣎ࣟࣥࡢࣂࣥ
Fig.36 SUS304㸭SCM415-3L㸸1100Υ- 5minЍWQࢻ≧⢏⏺೫ᯒࡀ㩭᫂࡟ほᐹ࡛ࡁࡓࠋᘬᙇᙉࡉࡀ
㧗࠸࡜ࡁࡣ␗┦⏺㠃࡬ࡢ࣎ࣟࣥࡢ೫ᯒࡀᐤ୚
ࡲࡓ࣎ࣟࣥศᕸࡢ⢏⏺೫ᯒ࠿ࡽ⤖ᬗ⢏ᚄࢆィࡋ࡚࠸ࡿ࡜⪃࠼ࡽࢀࡿࠋ
ࡍࡿ࡜ࠊSCM415 ࡢ᪉ࡀ SUS304 ࡼࡾࡶ኱ࡁ࠸(4)
ATE ἲ࡟ࡼࡾࠊSUS/SUS ⏺㠃ࡢᐦ╔ᛶࡀุࡇ࡜ࡀࢃ࠿ࡿࠋ
ู࡛ࡁࡿྍ⬟ᛶࡀ࠶ࡿࠋ900Υຍ⇕࡟ࡼࡗ࡚
1000Υ-5min ຍ⇕㸦Fig.35㸧࡛ࡶࠊSUS304㸭
SCM415 ࡢ ⏺ 㠃 ࡣ ᖜ ࢆ ࡶ ࡗ ࡚ ほ ᐹ ࡛ ࡁ ࡿ ࠋ   SUS/SUS ⏺㠃ࡢᐦ╔ᛶࡣྥୖࡋࡓࠋ
SUS304 ࡢȚ⢏ᚄࡣࠊ900Υຍ⇕࡜ẚ㍑ࡍࡿ࡜⢒  (5) ⇕ฎ⌮࡟ࡼࡗ࡚ᐦ╔ᛶࡀᨵၿ࡛ࡁࡓ࡜ࡋ࡚
⢏࡟࡞ࡗ࡚࠸ࡿࡇ࡜ࡀࢃ࠿ࡿࠋࡲࡓ࣎ࣟࣥࡢ⢏⏺   ࡶ⤌⧊ⓗᅇ᚟㸦⤖ᬗ⢏ᚄࡢ⢒⢏໬ࠊ㌿఩ᐦᗘࡢῶᑡ࡞࡝㸧࡟ࡼࡾᙉᗘࡣపୗࡍࡿࠋ
೫ᯒ࡟ຍ࠼࡚⢏⏺ᯒฟࡀከࡃぢࡽࢀࡿࠋ(6)
1100Υ-5min ຍ⇕࡟ࡼࡾࠊSUS304 ࡜ SCM
1100Υ-5min ຍ⇕㸦Fig.36㸧࡛ࡣࠊSUS304㸭
 415 㛫ࡢ࣎ࣟࣥࡢ⃰ᗘ໙㓄ࡣ࡞ࡃ࡞ࡿഴྥࢆ♧SCM415 ⏺㠃ࡢ⃰ᗘ໙㓄ࡣᾘኻࡍࡿഴྥࢆ♧ࡍࠋ ࡋࠊᘬᙇᙉࡉࡀపୗࡋࡓࠋ
ࡇࢀ࡟క࠸ࠊ࣎ࣟࣥࡢ࣐ࢺࣜࢵࢡࢫ࡬ࡢᅛ⁐ࡀ⏕(7) ATE ἲ࡟ࡼࡾࠊTable 3 ࡟♧ࡋࡓࡼ࠺࡟࣎ࣟࡌࠊSUS ഃ࡟ࡣ⢏⏺ᯒฟࠊSCM415 ഃ࡟ࡣ⢏ෆ ࣥࡢ⢏⏺೫ᯒࠊ⢏⏺ᯒฟ࠾ࡼࡧ⢏ෆᯒฟ࡜ᘬᙇ
ᯒฟࡀ㢧ⴭ࡟ぢࡽࢀࡿࡼ࠺࡟࡞ࡿࠋᘬᙇᙉࡉࡣ  ᙉᗘࡢ┦㛵ᛶࡀぢ࠸ࡔࡉࢀࡓࠋ
Table 3 ྛ✚ᒙᮦ࡟࠾ࡅࡿᘬᙇ≉ᛶ࡜࣎ࣟࣥࡢ⢏⏺೫ᯒࠊ⢏⏺ᯒฟ࠾ࡼࡧ⢏ෆᯒฟ㗰✀ 㻺㼛㻚㻌

㻝㻜㻝㻟㻌㻔㻿㼁㻿㻟㻜㻠㻛㻺㼕㻛㻌㼃㼀㻣㻤㻜㻯㻌 㻌

⇕ฎ⌮㻌

ᘬᙇᙉ
䛥㻔㻹㻼㼍㻕㻌ఙ䜃䠄䠂䠅␗┦⏺㠃೫ᯒ㻌

⢏⏺ᯒฟ㻌

⢏ෆᯒฟ㻌

㻺㻛㻭㻌

㻙㻌

㻙㻌

䕿䠄㻿㼁㻿㻛㼃㼀 ⏺㠃㻕㻌㽢㻌䕿䠄㻺㼕㻕㻘䕧䠄㻿㼁㻿䠅㻌㻥㻜㻜䉝㻙㻞㼙㼕㼚㻌

㻥㻢㻠㻌

㻞㻜㻚㻥㻌

䕿䠄㻿㼁㻿㻛㼃㼀 ⏺㠃㻕㻌㽢㻌㽢㻌㻝㻜㻜㻜䉝㻙㻞㼙㼕㼚㻌

㻤㻠㻣㻌

㻞㻢㻌

䕿䠄㻿㼁㻿㻛㼃㼀 ⏺㠃㻕㻌㽢㻌㽢㻌㻝㻜㻜㻜䉝㻙㻟㻜㼙㼕㼚㻌㻣㻝㻝㻚㻝㻌

㻟㻝㻌䕿䠄㻿㼁㻿㻛㼃㼀 ⏺㠃㻕㻌㽢㻌䕧䠄㻺㼕㻛㻿㼁㻿㻕㻌㻝㻜㻜㻜䉝㻙㻢㻜㼙㼕㼚㻌㻢㻤㻢㻚㻣㻌

㻟㻡㻌䕿䠄㻿㼁㻿㻛㼃㼀 ⏺㠃㻕㻌㽢㻌䕧䠄㻺㼕㻛㻿㼁㻿㻕㻌㻙㻌㻙㻌䕧㻔㻿㼁㻿㻛㼃㼀 ⏺㠃㻕㻌䕿䠄㻿㼁㻿㻕㻘䕧㻔㼃㼀㻕㻌䕿䠄㻿㼁㻿䞉㼃㼀㻕㻌

㻝㻝㻥㻣㻌

㻟㻚㻢㻌

䕿䠄㻿㼁㻿㻛㻠㻝㻡 ⏺㠃䠅䕧䠄㻿㼁㻿䞉㻠㻝㻡䠅㻌䕿䠄㻿㼁㻿䞉㻠㻝㻡䠅㻌㻞㻢㻚㻣㻌䕧䠄㻿㼁㻿㻛㻠㻝㻡 ⏺㠃䠅䕧䠄㻿㼁㻿䞉㻠㻝㻡䠅㻌䕿䠄㻿㼁㻿䞉㻠㻝㻡䠅㻌䕧䠄㻿㼁㻿䞉㻠㻝㻡䠅㻌䕿䠄㻿㼁㻿䞉㻠㻝㻡䠅㻌䕧䠄㻿㼁㻿䞉㻠㻝㻡䠅㻌䕿䠄㻿㼁㻿䞉㻠㻝㻡䠅㻌㻝㻜㻜㻜䉝㻙㻝㻞㻜㼙㼕㼚㻌㻌㻺㻛㻭㻌㻿㼁㻿㻟㻜㻠㻛㻿㻯㻹㻌㻥㻜㻜䉝㻙㻡㼙㼕㼚㻌㻣㻡㻡㻌㻠㻝㻡㻙㻝㻥㻸㻴㻌 㻌㻝㻜㻜㻜䉝㻙㻡㼙㼕㼚㻌

㻣㻥㻜㻌

㻞㻠㻚㻤㻌

䕧䠄㻿㼁㻿㻛㻠㻝㻡 ⏺㠃䠅㻌㻌㻝㻝㻜㻜䉝㻙㻡㼙㼕㼚㻌㻙㻌㻙㻌㽢䠄㻿㼁㻿㻛㻠㻝㻡 ⏺㠃䠅

㻌

㻺㻛㻭㻌

㻝㻜㻝㻠㻌

㻝㻚㻟㻌

䕿䠄㻿㼁㻿㻛㻠㻝㻡 ⏺㠃䠅䕿䠄㻿㼁㻿䞉㻠㻝㻡䠅㻌䕿䠄㻿㼁㻿䞉㻠㻝㻡䠅㻌㻿㼁㻿㻟㻜㻠㻛㻿㻯㻹㻌㻥㻜㻜䉝㻙㻡㼙㼕㼚㻌㻥㻟㻣㻚㻟㻌

㻝㻤㻚㻟㻌䕧䠄㻿㼁㻿㻛㻠㻝㻡 ⏺㠃䠅䕧䠄㻿㼁㻿䞉㻠㻝㻡䠅㻌䕿䠄㻿㼁㻿䞉㻠㻝㻡䠅㻌㻠㻝㻡㻙㻟㻸㻴㻌 㻌㻝㻜㻜㻜䉝㻙㻡㼙㼕㼚㻌㻤㻝㻝㻚㻤㻌

㻞㻠㻚㻞㻌䕧䠄㻿㼁㻿㻛㻠㻝㻡 ⏺㠃䠅䕧䠄㻿㼁㻿䞉㻠㻝㻡䠅㻌䕿䠄㻿㼁㻿䞉㻠㻝㻡䠅㻌㻌㻌㻝㻝㻜㻜䉝㻙㻡㼙㼕㼚㻌㻣㻢㻟㻚㻡㻌

㻞㻣㻚㻝㻌㽢䠄㻿㼁㻿㻛㻠㻝㻡 ⏺㠃䠅䕧䠄㻿㼁㻿䞉㻠㻝㻡䠅㻌䕿䠄㻿㼁㻿䞉㻠㻝㻡䠅㻌‫ۑ‬㸸strong ‫ڹ‬㸸weak 㸸very weak
JRR-3㸦Ẽ㏦⟶↷ᑕ㸧ࠊJRR-4㸦་⒪⏝↷ᑕ㸧ࠊATE㸦Ș⥺ࢺࣛࢵࢡ࢚ࢵࢳࣥࢢ㸧ἲࠊ㕲㗰ᮦᩱࠊ࣎ࣟࣥ≧ែศᕸほᐹ

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JAEA-Review 2013-040

   ◊✲ 3㸸12Cr ⣔⪏⇕㗪㗰ࡢ㛗᫬㛫ࢡ࣮ࣜࣉ◚᩿ᙉᗘ࡟ཬࡰࡍ Co ཬࡧ B ࡢຠᯝ㸯㸬ࡣࡌࡵ࡟
ⅆຊⓎ㟁ࣉࣛࣥࢺࡢ㧗ຠ⋡໬ࡢࡓࡵࠊ㉸ࠎ⮫⏺
ᅽࣉࣛࣥࢺࡢࡉࡽ࡞ࡿ㧗 㧗ᅽ໬ࡢྲྀ⤌ࡳࡀ࡞ࡉࢀࠊ㧗ᙉᗘࣇ࢙ࣛ࢖ࢺ⣔⪏⇕㗰ࡢ㛤Ⓨࠊホ౯ࡀ⾜ࢃࢀ࡚࠸ࡿ 4-7)ࠋ୍⯡࡟ Co ࡣ࣮࢜ࢫࢸࢼ࢖ࢺ┦ࢆᏳᐃ໬ࡉࡏࠊ ࣇ࢙ࣛ࢖ࢺࡢ⏕ᡂࢆᢚ࠼ࠊᅛ⁐ᙉ໬స⏝ࡶ᭷ࡍࡿࠋ12Cr 㗰ࡢ⤌⧊ᅉᏊࡣ」㞧࡛࠶ࡾࠊWࠊMoࠊCo ࡀ」ྜῧຍࡉࢀࡓሙྜࡢ㧗ᙉᗘ࡟ཬࡰࡍྛඖ⣲ࡢᙺ๭ࡣ༑ศ࡟ゎ᫂ࡉࢀ࡚
࠸࡞࠸ࠋゅᒇࡽ 8)ࡣࠊ12Cr 㗰ࣔࢹࣝྜ㔠ࡢᯒฟᣲື࡟ཬࡰࡍ Co ῧຍࡢຠᯝࢆㄪ࡭ࡓ⤖ᯝࠊCo ῧຍࡀ Mo ࠾ࡼࡧ W ࡢᅛ⁐㝈ࢆῶᑡࡉࡏࠊLaves ┦ࡢᯒฟࢆຍ㏿ࡍࡿࡇ࡜ࢆሗ࿌ࡋ࡚࠸ࡿࠋࡋ࠿ࡋ 1 ୓᫬㛫ࢆ㉸࠼ࡿ㛗᫬㛫ࢡ࣮ࣜࣉ◚᩿ヨ㦂࡟࠾ࡅࡿCo ࡢᙉᗘྥୖຠᯝࡣ᫂ࡽ࠿࡛࡞࠸ࠋ
B ࡣ㍍ඖ⣲᳨࡛ฟࡀᅔ㞴࡞ࡇ࡜࠿ࡽࠊ㗰୰࡛ࡢ
B ࡢᏑᅾᙧែࡸᙳ㡪࡟ࡘ࠸࡚ከᩘሗ࿌ࡉࢀ࡚࠸ࡿ
ࡀࠊࡇࢀࡽࡣ㗪㘫㗰࡟࠾ࡅࡿ㹀ࡢᣲື࡛࠶ࡾࠊ⪏⇕㗪㗰࡟࠾ࡅࡿ B ࡢຠᯝࠊ᭱㐺ῧຍ㔞࡟ࡘ࠸࡚ࡣ
᫂☜࡟ࡉࢀ࡚࠸࡞࠸ࠋ
ᮏ◊✲࡛ࡣ 12Cr ⣔㗪㗰ࡢ㛗᫬㛫ࢡ࣮ࣜࣉ◚᩿ᙉᗘ࡟ཬࡰࡍ Co ࠾ࡼࡧ B ࡢຠᯝࢆ᫂ࡽ࠿࡟ࡍࡿ
ࡇ࡜ࢆ┠ⓗ࡜ࡋࠊ㧗 ᙉᗘ࡜ᚤど⤌⧊࡟ཬࡰࡍ
Co ࡜ B ࡢຠᯝࢆㄪ࡭ࡓࠋ
2㸬ᐇ㦂᪉ἲ
2.1 ౪ヨ㗰࠾ࡼࡧ⇕ฎ⌮᮲௳౪ヨ㗰ࡢᇶᮏ⤌ᡂࡣ 0.12C-10.5Cr-0.4Mo-2.2
W-0.2V-0.06Nb-0.03N ࡛#1 ࡣ 2.5Co-20ppmBࠊ#2 ࡣ<0.01Co-20ppmࠊ#3 ࡣ 2.5Co-50ppmB ࡛ኚ໬ࡉࡏ࡚ࠊ3 ✀ࢆ VIM ࡛⁐〇ࡋࡓࠋCr ᙜ㔞ࡣࠊ
#1 ࡀ 4.9ࠊ#2 ࡀ 10.0ࠊ#3 ࡀ 5.0 ࡛࠶ࡗࡓࠋ⇕ฎ⌮ࡣ 1050Υ࡟࡚ 8 ᫬㛫ࡢ↝ࡁ࡞ࡽࡋࢆ⾜࠸ࠊ
575Υ࡜ 725Υ࡟࡚ྛ 8 ᫬㛫࡛ 2 ᅇࡢ↝ᡠࡋࢆ⾜ࡗࡓࠋࡇࢀࡽ୸Წ࠿ࡽࢡ࣮ࣜࣉ◚᩿ヨ㦂∦ࢆ᥇ྲྀࡋࡓࠋ
2.2 ᶵᲔⓗᛶ㉁ࢡ࣮ࣜࣉ◚᩿ヨ㦂ࡣࠊᖹ⾜㒊┤ᚄ 6mmࠊᖹ⾜㒊㛗ࡉ 30mm ࡢ୸Წヨ㦂∦ࢆ⏝࠸ࠊ650Υࢆ୰ᚰ࡟ 64㹼206MPa ࡢ⠊ᅖ࡛ᐇ᪋ࡋࡓࠋ
2.3 ᯒฟ≀ࡢホ౯࡜⤌⧊ほᐹㄪ㉁ࡲࡲࠊ࠾ࡼࡧࢡ࣮ࣜࣉ◚᩿ᮦࡢᖹ⾜㒊ࢆ౪ヨᮦ࡜ࡋ࡚ࠊ㏱㐣㟁Ꮚ㢧ᚤ㙾㸦TEM㸧ほᐹ࡜ᯒฟ≀ࡢྠᐃ㸦EDSࠊXRDࠊEPMA㸧ࢆ⾜ࡗࡓࠋ㍍ඖ
⣲ B ࡢ≧ែศᯒࡣࠊ1ppm ௨ୗࡢῧຍ㔞࡛ࡶ᳨ฟྍ⬟࡞୰ᛶᏊ฼⏝ࡢ Alpha-particle Track Etching Method㸦ATE ἲ㸧15-16)ࢆ⏝࠸ࡓࠋ
3㸬⤖ᯝ࠾ࡼࡧ⪃ᐹ
3.1 ⤖ᬗ⢏ᚄ࡜ࢡ࣮ࣜࣉ◚᩿ᙉᗘᪧ࣮࢜ࢫࢸࢼ࢖ࢺ⢏ᚄࡣ⢏ᗘ␒ྕ 0㹼1 ࡛ࠊ㗰✀㛫ࡢ኱ࡁ࡞ᕪࡣㄆࡵࡽࢀ࡞࠿ࡗࡓࠋCo ࢆ 2.5%
ῧຍࡋࡓ#1 ࠾ࡼࡧ#3 ࡣ࣐ࣝࢸࣥࢧ࢖ࢺ༢┦⤌⧊ࡀᚓࡽࢀ࡚࠸ࡿࡀࠊCo ↓ῧຍ࡛ Cr ᙜ㔞ࡢ኱ࡁ࠸#2 ࡣ⌫ᙧࡢ  ࣇ࢙ࣛ࢖ࢺࡀࢃࡎ࠿࡟ㄆࡵࡽࢀࡓࠋ ࣇ࢙ࣛ࢖ࢺࡢ㠃✚⋡ࡣ⣙ 1㸣࡛࠶ࡗࡓࠋCo ῧຍ࡟ࡼࡿ  ࣇ࢙ࣛ࢖ࢺ⏕ᡂࡢᢚไຠᯝࡀ☜ㄆ࡛ࡁࡓࠋ
B ῧຍ㔞ࡢ┦㐪࡟ࡼࡿ⤌⧊ࡢ㐪࠸ࡣග㢧࡛ࣞ࣋ࣝࡣㄆࡵࡽࢀ࡞࠿ࡗࡓࠋ

Fig.37 L.M.P.ἲ࡟ࡼࡿࢡ࣮ࣜࣉ◚᩿ᙉᗘࢡ࣮ࣜࣉ◚᩿ヨ㦂ࡢ⤖ᯝࢆ Fig.37 ࡟♧ࡍࠋᶓ㍈
ࡣ Larson-Miller ࣃ࣓࣮ࣛࢱ㸦L.M.P.㸧ࢆ C=25࡛ᩚ⌮ࡋࡓࠋప ▷᫬㛫ഃ㸦L.M.P.=24㹼25.5㸧
࡟࠾࠸࡚ࡣ Co ࢆ 2.5%ῧຍࡋࡓ#1ࠊ#3 ࡣ࡯ࡰྠ➼ࡢࢡ࣮ࣜࣉ◚᩿ᙉᗘࢆ♧ࡋ࡚࠸ࡿࡀࠊCo ↓ῧຍࡢ#2 ࡛ࡣࠊప࠸ࢡ࣮ࣜࣉ◚᩿ᙉᗘࢆ♧ࡍࠋ600Υ▷᫬㛫࡛ࡣ 2.5㸣Co ῧຍ㗰ࡀࢡ࣮ࣜࣉ◚᩿ᙉᗘ࡟ඃࢀ࡚࠸ࡿࠋ୍᪉ࠊ㧗 㛗᫬㛫ഃ㸦L.M.P.=25.5
㹼27㸧࡟࠾࠸࡚ࡣ Co ῧຍ㗰ࡢഴࡁࡀ኱ࡁࡃࠊࢡ
࣮ࣜࣉ◚᩿ᙉᗘࡢᛴ⃭࡞పୗࡀほᐹࡉࢀࡿࡀࠊCo↓ῧຍ㗰࡛ࡣഴࡁࡢኚ໬ࡀᑠࡉࡃẚ㍑ⓗ⁥ࡽ࠿࡞᭤⥺࡛࠶ࡿࠋヨ㦂 ᗘ 650Υࡢሙྜࢆ౛࡟࡜ࡿ
࡜ࠊᛂຊ 206MPa ࡟࠾࠸࡚#1ࠊ#3 ࡣ#2 ࡢ⣙ 5㹼
6 ಸࡢ◚᩿᫬㛫࡟ᑐࡋࠊᛂຊ 79MPa ࡟࠾࠸࡚ࡣ
#2 ࡀ#1ࠊ#3 ࡢ⣙ 1.5 ಸ⛬ᗘࡢ◚᩿᫬㛫ࢆ♧ࡍࠋࢡ࣮ࣜࣉ◚᩿ᙉᗘࡢ㏫㌿ࡣ 650Υࠊ⣙ 7000h ┦ᙜJRR-3㸦Ẽ㏦⟶↷ᑕ㸧ࠊJRR-4㸦་⒪⏝↷ᑕ㸧ࠊATE㸦Ș⥺ࢺࣛࢵࢡ࢚ࢵࢳࣥࢢ㸧ἲࠊ㕲㗰ᮦᩱࠊ࣎ࣟࣥ≧ែศᕸほᐹ

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ࡢヨ㦂᮲௳࡛ㄆࡵࡽࢀࡿࠋࡇࢀࡽࡢ⤖ᯝ࠿ࡽࠊ㛗᫬㛫ヨ㦂࡟࠾ࡅࡿ⤌⧊Ᏻᐃᛶ࡟ Co ࡀ኱ࡁࡃᙳ㡪ࡋ࡚࠸ࡿࡇ࡜ࡀண᝿ࡉࢀࡿࠋ
୍᪉ࠊ#3 ࡣ㧗 㛗᫬㛫࡟࠾࠸࡚#1 ࡼࡾࢃࡎ࠿
࡟㧗࠸◚᩿ᙉᗘࢆ♧ࡍഴྥ࡟࠶ࡾࠊB ῧຍ㔞࡟ࡼࡿᕪ␗ࡀࢃࡎ࠿࡟ㄆࡵࡽࢀࡓࠋ
3.2 TEM ⷧ⭷⤌⧊ほᐹㄪ㉁ࡲࡲࠊ࠾ࡼࡧࢡ࣮ࣜࣉ◚᩿ᮦᖹ⾜㒊ࡢⷧ⭷࡟ࡼࡿ TEM ⤌⧊ほᐹ⤖ᯝࢆ Fig.38 ࡟♧ࡍࠋㄪ㉁ࡲࡲᮦࡢ#1(a)ࠊ#2(d)ࠊ#3(h)ࡣ࠸ࡎࢀࡶࣛࢫ࣐ࣝ
ࢸࣥࢧ࢖ࢺ⤌⧊࡛ࠊẚ㍑ⓗ㧗࠸ᐦᗘࡢ㌿఩⤌⧊ࢆ᭷ࡍࡿࠋࡲࡓࣛࢫࠊࣃࢣࢵࢺࠊࣈࣟࢵࢡ࠿ࡽᡂࡾࠊ
ᪧȚ⢏⏺࡟ࡣከࡃࡢᯒฟ≀ࡀㄆࡵࡽࢀࡓࠋCo ࠾
ࡼࡧ B ῧຍ㔞ࡢ㐪࠸࡟ࡼࡿ⤌⧊ࡢ኱ࡁ࡞ᕪ␗ࡣ
ㄆࡵࡽࢀ࡞࠿ࡗࡓࠋᛂຊ 206MPa ࡛ࡣࠊ2.5%Co
ῧຍࡢ#1(b㸧࡜#3(i㸧ࢆẚ࡭ࡿ࡜ࠊ࠸ࡎࢀࡶ◚᩿᫬㛫 30h ᮍ‶ࡢ▷᫬㛫࡛࠶ࡾ࡞ࡀࡽࠊ㌿఩ᐦᗘࡢῶᑡࠊࣛࢫᖜࡢᣑᙇ࠾ࡼࡧᒁᡤⓗ࡞⤌⧊ࡢᅇ᚟ࠊ
ࡉࡽ࡟ᯒฟ≀ࡢ㢧ⴭ࡞⢒኱໬࡞࡝ࠊᛴ⃭࡞⤌⧊ኚ໬ࡀほᐹࡉࢀࡓࠋCo ↓ῧຍࡢ#2(e)࡛ࡣࠊ◚᩿᫬㛫ࡀ▷࠸ࡶࡢࡢࠊࣛࢫ⤌⧊ࠊᚤ⣽࡞ᯒฟ≀ࡀಖࡓࢀ࡚࠸ࡿࡇ࡜ࡀほᐹࡉࢀࡓࠋ
ᛂຊ 79MPa ࡛ࡣࠊ#1(c㸧ࠊ#3(j㸧࡟࠾࠸࡚ࠊࣛ
ࢫᵓ㐀ࡀ࡯ࡰᾘኻࡋࠊ➼㍈ࡢࢧࣈࢢࣞ࢖ࣥᵓ㐀ࢆ♧ࡋ࡚࠸ࡿࠋ୍᪉ࠊ#2(f)ࡣ㌿఩⤌⧊ࠊࣛࢫᵓ㐀ࡀṧᏑࡋ࡚࠾ࡾࠊ⤌⧊ᅇ᚟ࡣᒁᡤⓗ࡞ࢧࣈࢢࣞ࢖ࣥ
໬࡟␃ࡲࡗ࡚࠸ࡿࠋ
ᛂຊ 64MPa ࡢ#2(g)࡛ࡣࠊẚ㍑ⓗ㧗ᐦᗘࡢ㌿఩࡜ࣛࢫᵓ㐀ࡀほᐹ࡛ࡁࠊCo ↓ῧຍ㗰ࡣඃࢀࡓ⤌⧊Ᏻᐃᛶࢆ♧ࡋࡓࠋ
3.3 ATE ほᐹ
ATE ീࡢほᐹ⤖ᯝࢆ Fig.39 ࡟♧ࡍࠋࡇࡢ෗┿ࡣࠕ◪㓟ࢭ࣮ࣝࣟࢫࣇ࢕࣒ࣝ࡟ṧࡉࢀࡓ  ⥺⢏Ꮚࡢ⑞㊧ࠖࢆගᏛ㢧ᚤ㙾ほᐹࡋࡓࡶࡢ࡛࠶ࡿࠋ㯮࠸ࢥࣥࢺࣛࢫࢺࡀ B ࡢᏑᅾ⟠ᡤࢆ♧ࡋࠊ㯮Ⅼࡣ B
໬ྜ≀ࠊ࣐ࢺࣜࢡࢫࡢᚤ⣽࡞ࢥࣥࢺࣛࢫࢺࡣᅛ⁐≧ែࡢ B ࢆ♧ࡋ࡚࠸ࡿࠋATE ീࡈ࡜ࡢ↷ᑕ᮲௳࠾ࡼࡧ࢚ࢵࢳࣥࢢ᮲௳ࢆᥞ࠼࡚࠸ࡿࡓࡵࠊ㯮Ⅼࡢ኱ࡁࡉ࡟ࡘ࠸࡚┦ᑐẚ㍑ࡣྍ⬟࡛࠶ࡿࡀࠊ⤯ᑐ್ࡢホ౯࡛ࡣ࡞࠸ࡇ࡜࡟ὀពࡀᚲせ࡛࠶ࡿࠋFig.39(a)ࠊ(e)ࠊ(i)࡟♧ࡋࡓࡼ࠺࡟ࠊ ㄪ㉁ࡲࡲᮦ࡟ほᐹࡉࢀࡓ㯮࠸ࢥࣥࢺࣛࢫࢺࡣ኱ࡁࡃ␗࡞
ࡗ࡚࠸ࡓࠋFig.39 (a)࠾ࡼࡧ(e)ࡣ࡯ࡰྠ⛬ᗘࡢ Bῧຍ㔞࡛࠶ࡾ㯮Ⅼࡀ࠸ࡎࢀࡶᏑᅾࡍࡿࡀࠊ(e)ࡣࢃ

ࡎ࠿࡟㯮Ⅼࡢᩘࡀᑡ࡞ࡃࠊ ࣇ࢙ࣛ࢖ࢺ࡟ᑐᛂࡋ
࡚࠸ࡿ࡜ᛮࢃࢀࡿࢥࣥࢺࣛࢫࢺ㸦ⓑᢤࡁࡢᓥ≧⤌⧊㸧ࡀほᐹࡉࢀࡓࠋ50ppmB ῧຍࡢ(i)ࡣ㯮Ⅼࡢᩘ≀ࡀࡼࡾከࡃᙧᡂࡉࢀ࡚࠸ࡿ࡜ุ᩿ࡉࢀࡓࠋ
#1 ࡣࠊヨ㦂᫬㛫ࡢቑຍ࡟కࡗ࡚㯮Ⅼࡢ኱ࡁࡉࡀ
኱ࡁࡃ࡞ࡾࠊFig.37(b)ࠊ(c)࡛ࡣࠊᩘᐦᗘࡣࢃࡎ࠿
࡟ῶᑡࡍࡿഴྥࢆ♧ࡋࡓࠋᩘᐦᗘࡢῶᑡࡣࠊᯒฟ
≀࡟ B ࡀ⃰໬ࡋࡓ⢏Ꮚᩘࡢῶᑡ࡟ᑐᛂࡋ࡚࠾ࡾࠊ
ᯒฟ≀ࡢจ㞟࣭⢒኱໬ࢆ⾲ࡋ࡚࠸ࡿࠋ(d)࡛ࡣᩘᐦ
ᗘࡣࡉࡽ࡟ῶᑡࡋࠊจ㞟ࡀ㐍ࢇ࡛࠸ࡿ࡜⪃࠼ࡽࢀࡿࠋ
#2 ࡣࠊ#1 ࡜ྠᵝ࡟ࠊヨ㦂᫬㛫ࡢቑຍ࡟కࡗ࡚
㯮Ⅼࡢᩘᐦᗘࡀῶᑡࡋࡓ࡜⪃࠼ࡽࢀࡿࡀࠊ
Fig.39(f㸧࡛ࡣ(d㸧࡜ྠᵝ࡟ࢥࣥࢺࣛࢫࢺࡀᙅ࠸ࠋ
Fig.39(g㸧࠾ࡼࡧ(h㸧࡛ࡣᪧ࣮࢜ࢫࢸࢼ࢖ࢺ⢏⏺
࡜ᛮࢃࢀࡿ⟠ᡤ࡬ࡢ೫ᯒࡀほᐹࡉࢀࡓࠋFig.39(j㸧࡟୍౛࡜ࡋ࡚ࠊ⥺ୖࡢ㯮࠸ࢥࣥࢺࣛࢫࢺࢆ▮༳࡛♧ࡋࡓࠋFig.39(g㸧࠾ࡼࡧ(h㸧ࡣ  ࣇ࢙ࣛ࢖ࢺ࡟
ᑐᛂࡋ࡚࠸ࡿ࡜ᛮࢃࢀࡿࢥࣥࢺࣛࢫࢺࡶほᐹࡉࢀࡿࡀࠊ ࣇ࢙ࣛ࢖ࢺ࡜ࡑࡢ࣐ࢺࣜࢡࢫ࡜ࡢ⏺㠃ࡣࠊ⇕ฎ⌮ࡲࡲ(e)ࠊ࠾ࡼࡧ◚᩿ᮦ(g)(h)࡟࠾࠸࡚ࠊ
኱ࡁࡉࠊᙧ≧࡟኱ࡁ࡞ኚ໬ࡣㄆࡵࡽࢀ࡞࠿ࡗࡓࠋ
#3 ࡣࠊ#1 ࠾ࡼࡧ#2 ࡜␗࡞ࡾࠊヨ㦂᫬㛫ࡢቑຍ࡟క࠺ᩘᐦᗘࡢኚ໬ࡣ࡯࡜ࢇ࡝ㄆࡵࡽࢀ࡞࠿ࡗ
ࡓࠋᪧ࣮࢜ࢫࢸࢼ࢖ࢺ⢏⏺࡬ࡢ B ೫ᯒࡣࠊFig.39(j㸧࡟࠾࠸࡚᫂░࡟ほᐹࡉࢀ࡚࠾ࡾࠊẚ㍑ⓗ᪩࠸᫬㛫࡟೫ᯒࡋࡓ࡜⪃࠼ࡽࢀࡿࠋ
#1ࠊ#2 ࡣࠊⱝᖸࡢࢥࣥࢺࣛࢫࢺ࡜  ࣇ࢙ࣛ࢖ࢺ
ࡢ᭷↓࡟㐪࠸ࡀ࠶ࡿࡶࡢࡢࠊATE ീ࠿ࡽ B ศᕸ࡟኱ࡁ࡞㐪࠸ࡣぢࡽࢀ࡞࠿ࡗࡓࠋ୍᪉ࠊ#3 ࡛ࡣ Bῧຍ㔞ࡀከ࠸ࡇ࡜࡟㉳ᅉࡋࡓ࡜ᛮࢃࢀࡿ B ᯒฟ≀ࡢࢥࣥࢺࣛࢫࢺࡀࠊࡼࡾᙉࡃほᐹࡉࢀࡓࠋ
3.4 ඖ⣲ᅛ⁐㔞࠾ࡼࡧ Laves ┦ࡢᏳᐃᛶ
2.5%Co ῧຍ㗰(#1)ࠊCo ↓ῧຍ㗰(#2)ࡢ⇕ฎ⌮ࡲࡲࠊ࠾ࡼࡧࢡ࣮ࣜࣉ◚᩿ᮦ࠿ࡽᢳฟࡋࡓṧ´ࢆ⏝࠸࡚ࠊEPMA ゎᯒ࡟ࡼࡾᮍ⁐ゎᯒฟ≀୰࡟ྵࡲࢀࡿ W ࠾ࡼࡧ Mo ࡢẚ⋡ࢆồࡵࡓ⤖ᯝࢆ Fig.40
࡟♧ࡍࠋῧຍ㔞࡟ᑐᛂࡋ࡚ࠊᯒฟ≀୰࡟ࡣ W ࡀከࡃྵࡲࢀࡓࠋ᫬㛫ࡢቑຍ࡟కࡗ࡚ Mo ẚ⋡ࡣࢃࡎ࠿࡟༢ㄪቑຍࡍࡿࡀࠊW ẚ⋡ࡣ 5000h ๓ᚋ࡛ῶᑡࡋࠊ㛗᫬㛫ഃ࡛኱ࡁ࡞ኚ໬ࡣㄆࡵࡽࢀ࡞࠿ࡗ
ࡓࠋWࠊMo ඹ࡟ Laves ┦࠾ࡼࡧ M23C6 ࡢᵓᡂඖ⣲࡛࠶ࡿࡀࠊ
W ࡣ୺࡟ Laves ┦ࠊMo ࡣ୺࡟ M23C6
࡟ྵࡲࢀࠊW ࡢῶᑡࡣ M23C6 ࠾ࡼࡧ Z ┦ࡢቑຍ

JRR-3㸦Ẽ㏦⟶↷ᑕ㸧ࠊJRR-4㸦་⒪⏝↷ᑕ㸧ࠊATE㸦Ș⥺ࢺࣛࢵࢡ࢚ࢵࢳࣥࢢ㸧ἲࠊ㕲㗰ᮦᩱࠊ࣎ࣟࣥ≧ែศᕸほᐹ

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JAEA-Review 2013-040

      

Fig.38 #1㹼#3 ࡟࠾ࡅࡿ 650Υࢡ࣮ࣜࣉ◚᩿ᙉᗘ࡜ TEM ീ

Fig.39 #1㹼#3 ࡟࠾ࡅࡿ 650Υࢡ࣮ࣜࣉ◚᩿ᙉᗘ࡜ ATE ീ

JRR-3㸦Ẽ㏦⟶↷ᑕ㸧ࠊJRR-4㸦་⒪⏝↷ᑕ㸧ࠊATE㸦Ș⥺ࢺࣛࢵࢡ࢚ࢵࢳࣥࢢ㸧ἲࠊ㕲㗰ᮦᩱࠊ࣎ࣟࣥ≧ែศᕸほᐹ

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JAEA-Review 2013-040

Fig.40 ࢡ࣮ࣜࣉ◚᩿᫬㛫࡜ EPMA ࡟ࡼࡿᮍ⁐ゎᢳฟṧ´୰ࡢ W ࡜ Mo 㔞ࡢኚ໬࡟ᑐᛂࡋࡓ┦ᑐⓗ࡞ῶᑡ࡜⪃࠼ࡽࢀࡿࠋ࠸ࡎࢀࡢ
◚᩿᫬㛫࡟࠾࠸࡚ࡶ#1 ࡢᯒฟ≀୰ࡢ W ࠾ࡼࡧ
Mo ࡣ#2 ࡼࡾࡶከࡃࠊ2.5㸣Co ῧຍࡣᯒฟ≀ࡢ⏕ᡂࢆಁ㐍ࡋ࡚࠸ࡿࡇ࡜ࡀ᫂ࡽ࠿࡜࡞ࡗࡓࠋEDSศᯒ࠾ࡼࡧ EPMA ศᯒ࡟ࡼࡾࢡ࣮ࣜࣉ◚᩿ᮦࡢᯒฟ≀ࠊ࡜ࡃ࡟ Laves ┦୰࡬ࡢ Co ࡢ⃰໬ࠊ࠾ࡼࡧ 2.5%Co ῧຍ㗰ࡢ Laves ┦⏕ᡂẚ⋡ࡀ㧗࠸ࡇ࡜ࢆ᫂ࡽ࠿࡟ࡋࡓࠋ
ᮏ◊✲ࡢ 2.5㸣Co ῧຍ㗰ࡢ㛗᫬㛫ヨ㦂࡟࠾ࡅࡿ⤌⧊ᏳᐃᛶࡢపୗࡣࠊCo ࡀ Laves ┦ࡢ⏕ᡂࢆಁ㐍ࡋࠊ࣐ࢺࣜࢡࢫࡢᅛ⁐ W 㔞ࢆῶᑡࡉࡏࡿࡇ࡜
࡟㉳ᅉࡍࡿࠋྜ㔠タィࡣᘬᙇ≉ᛶࠊ⾪ᧁ≉ᛶ࡟௦⾲ࡉࢀࡿ▷᫬㛫≉ᛶ࡜ࠊࢡ࣮ࣜࣉ◚᩿ᙉᗘ࡟௦⾲ࡉࢀࡿ㛗᫬㛫≉ᛶࢆ⪃៖ࡍࡿᚲせࡀ࠶ࡾࠊ᭱㐺࡞Co ῧຍ㔞ࢆồࡵࡿࡇ࡜ࡣ௒ᚋࡢㄢ㢟࡛࠶ࡿࠋ㸲㸬⤖ゝ
12Cr ⣔㗪㗰ࡢ㛗᫬㛫ࢡ࣮ࣜࣉ◚᩿ᙉᗘ࡟ཬࡰ
ࡍ Co ࠾ࡼࡧ B ࡢຠᯝࢆ᫂ࡽ࠿࡟ࡍࡿࡇ࡜ࢆ┠ⓗ࡜ࡋࠊ㛗᫬㛫ࢡ࣮ࣜࣉヨ㦂ᮦࡢ⤌⧊ほᐹࢆ⾜࠸ࠊ㧗 ᙉᗘ࡜ᚤど⤌⧊࡟ཬࡰࡍ Co ࡜ B ࡢຠᯝࢆㄪ
࡭ࠊ௨ୗࡢ⤖ㄽࢆᚓࡓࠋ
㸦㸯㸧Co ࡣ  ࣇ࢙ࣛ࢖ࢺࡢ⏕ᡂᢚไຠᯝࡀ࠶ࡾࠊ
2.5%Co ῧຍ㗰࡛ࡣ  ࣇ࢙ࣛ࢖ࢺࡢ⏕ᡂࡀㄆࡵࡽ
ࢀࡎࠊⰋዲ࡞ᘬᙇࠊ⾪ᧁ≉ᛶࡀᚓࡽࢀࡓࠋ
㸦㸰㸧ࢡ࣮ࣜࣉ◚᩿ヨ㦂ࡢ⤖ᯝࠊప ▷᫬㛫ഃ࡛
ࡣ Co ῧຍ㗰ࡢᙉᗘࡀඃࢀࡿࡀࠊ650Υࠊ⣙ 7000h┦ᙜࢆ㉸࠼ࡿ㧗 㛗᫬㛫ഃ࡛ࡣᙉᗘࡀ㏫㌿ࡋࠊCo ↓ῧຍ㗰ࡢᙉᗘࡀ㧗࠿ࡗࡓࠋ㸦㸱㸧ࢡ࣮ࣜࣉ◚᩿ᙉᗘ࡟ཬࡰࡍ B ࡢຠᯝࡣࠊప
▷᫬㛫ഃ࡛ࡣ 20ppmB 㗰࡜ 50ppmB 㗰ࡢ᫂☜࡞ᕪ␗ࡣㄆࡵࡽࢀ࡞࠿ࡗࡓࡀࠊ㧗 㛗᫬㛫ഃ࡛
ࡣ 50ppmB 㗰ࡀᙉᗘࡢ㧗࠸ഴྥࢆ♧ࡋࡓࠋ㸦㸲㸧TEM ほᐹࡢ⤖ᯝࠊ2.5%Co ࡢῧຍࡣࠊ⤌⧊
ࡢᅇ᚟ࢆ㏿ࡵࡓࠋ
㸦㸳㸧B ῧຍ㔞࡟ࡼࡗ࡚ᯒฟ≀ࡢจ㞟࣭⢒኱໬ഴྥࡣ␗࡞ࡾࠊ㛗᫬㛫ഃ࡛ࡣ 50ppmB ῧຍࡀ᭷฼
࡛࠶ࡗࡓࠋATE ほᐹࡢ⤖ᯝࠊB ࡣ M23C6 ୰࡟ࡼࡾከࡃᅛ⁐ࡋ࡚࠾ࡾࠊM23(CB)6 ࢆᙧᡂࡍࡿ࡜⪃࠼ࡽࢀࡿࠋ
㸦㸵㸧Co ῧຍࡣ Laves ┦ࡢ┦Ᏻᐃᛶࢆྥୖࡋࠊ
Laves ┦ࡢᅛ⁐ ᗘୖ᪼࡟ࡼࡿᯒฟ㥑ືຊࡢቑ኱ࡀ⏕ᡂಁ㐍せᅉࡢ୍ࡘ࡜⪃࠼ࡽࢀࡿࠋཧ⪃ᩥ⊩1) K.Asakura, M.Hirasaka and H.Tamegai㸸
Electron microscope sample making
technique for leading from failure to successࠊ(2007㸧,p.199ࠊAGNE Shofu-Sya.
2) K.Asakura, T.Koseki,M.Kawate andIshimoto:Tetsu-to-Hagane,93,(2007),pp.
634-641
3) T.M.WilliamsࠊA.M.Stoneham and D.R.
Harries㸸Metal Scienceࠊ10㸦1976㸧ࠊ14) 1) R.Kaneko, S.Nakamura, Y.Watanabe,
Y.Tanaka and T.Fujita: Therm. Nucl. Power,
46(1995), 968
5) 2) M.Arai, H.Doi, Y,Fukui, T.Azuma and
T.Fujita: Materials for Advanced PowerEngineering, Julich (2002), III-1269
6) 3) M.Arai, H.Doi, Y,Fukui, T.Azuma and
T.Fujita: 15th International Forge Master
Meeting, Tokyo (2003), 261
7) 4) M. Staubli, R.Hanus, T.Weber, K.H.Mayer
and T.-U.Kern: Materials for Advanced
Power Engineering, Julich (2006), P.II-855
8) Y.Kadoya and E.Shimizu: Tetsu-to-Hagane,
88(2002),2263
9) K.Asakura, K.Shibata, H.Sawahata,
M.Kawate and S.Harasawa: Tetsu-to-Hagane,
89(2003),369Ϫ㸬⤖ᯝࡢබ⾲1) T.Sato㸪K.Tamura, K.Asakura and T.Fijita:
Correlation of reverse-S type creep rupture
behavior with strengthening mechanism of
9%Cr-W-Co heat resistant steel for USC
boiler components, CAMP-ISIJ, 19, 565,
(2006)
2) C. Nagasaki, K. Asakura, T. Koseki and K.
Shibata㸸Effects of boron and tin on surface

JRR-3㸦Ẽ㏦⟶↷ᑕ㸧ࠊJRR-4㸦་⒪⏝↷ᑕ㸧ࠊATE㸦Ș⥺ࢺࣛࢵࢡ࢚ࢵࢳࣥࢢ㸧ἲࠊ㕲㗰ᮦᩱࠊ࣎ࣟࣥ≧ែศᕸほᐹ

6-1- 300 -

㻝㻠㻜

JAEA-Review 2013-040

hot shortness due to copper in low carbon
steel, CAMP-ISIJ, 19, 501, (2006)
3) T.Sato, K.Tamura, K.Asakura and T.Fujita:Long term creep rupture strength andquantitative analysis of precipitates duringcreep of 9%Cr-W-Co heat resistant steel for
USC boiler components, CAMP-ISIJ, 19,1173, (2006)
4) K.Asakura, T.Koseki, T.Fujita and T.Sato:
Effects of Al and Ni on long term creep
rupture strength of high Cr heat resistantsteels and strengthening mechanisms,
Report of the 123rd Committee on HeatResisting Materials and Alloys Japan
Society for the Promotion of Science. 47,3
(2006),329-344
5) K.Asakura, T.Koseki, T.Fujita and T.Sato:
Effects of Al and Ni on long term creep
rupture strength of high Cr heat resistantsteels and strengthening mechanisms,
CAMP-ISIJ, 20, 549(2007)
6) K.Asakura, T.Koseki, M.Kawate and M.
Ishimoto: Establishment and problem of the
Observing System for Boron in Steels by
Alpha-particle Track Etching Method Using
Pneumatic Tube of JRR-3 and JRR-4.
Tetsu-to-Hagane, 93(2007) 634-641
7) K.Asakura and T.Koseki: Establishment
and problem of the observing system for
Boron in steels by Alpha-particle track
etching method using pneumatic tube of
JAEA, CAMP-ISIJ, 93(2007)8) K.Asakura, T.Koseki, T.Fujita, Y.Kodama,
K.Tamura and T.Sato: 9-10Cr Effects of verysmall amount of Ni and Al on long term
creep rupture strength of 9-10Cr heat
resistant steels, CAMP-ISIJ, 21, 580,(2008)9) M.Arai, K.Kawanaka, H.Doi, K.Asakura
and T.Koseki: Effect of cobalt and boron onlong term creep rupture strength of 12Cr
cast steels, CAMP-ISIJ,22,571,(2009)10) M.Arai, K.Kawanaka, H.Doi, K.Asakura
and T.Koseki: Effect of nickel, carbon andnitrogen on long term creep rupture
strength of 10Cr steels containing boron,
CAMP-ISIJ, 22, 1367,(2009)11) K.Asakura, T.Koseki, M.Arai and T.Sato:
Effects of boron content variation and heat
treatment on creep rupture strength offerritic heat resistant steels㸸CAMP-ISIJ,
23,1151 (2010)12) M.Arai, H.Doi, K.Asakura and T.Koseki:
Effect of nickel and aluminum on long term
creep rupture strength of 10Cr heat esistantsteelsࠊCAMP-ISIJ, 23, 1152 (2010)13) M.Arai, K.Asakura, H.Doi, K.Kawanaka,
T.Koseki and T.Horiuchi: Effect of cobalt
and boron on long-term creep rupture

strength of 12Cr cast steels, Tetsu-toHagane,96,10 (2010㸧620-628
14) K.Asakura, T.Koseki, T.Sato, M.Arai,
H.Tamura and T.Fujita: Effect ofchromium, aluminum and nickel on
microstructure and reverse-S type creep
rupture strength of Cr ferritic heat
resisting steelsࠊTetsu-to-Hagane, 96,11
㸦2010㸧665-672
ϫ㸬௒ᚋࡢ᪉㔪ཎᏊຊᶵᵓ⅔㸦་⒪⏝࠾ࡼࡧẼ㏦⟶タഛ㸧ࢆ⏝࠸࡚ ATE ἲࡢᡭἲࢆ☜❧ࡋࡓᚋࠊ௒ᮇ௨㝆ࡣᛂ⏝◊✲࡟ࡘ࠸࡚㐙⾜ࡋࡓࠋ௒ᚋࡣࠊ
(1) ⇕㛫ᅽᘏཬࡧ෭㛫ᅽᘏ࡟ࡼࡗ࡚స〇ࡋࡓ」ᒙ㗰ᯈࢆ⏝࠸࡚ࠊ」ᒙ⏺㠃ࡢ࣑ࢡࣟ⤌⧊࡜࣎ࣟࣥࡢ೫ᯒཬࡧᯒฟ㸦࣎ࣟࣥࡢศᕸ≧ែほᐹ㸧࡜࠸࠺どⅬ࠿ࡽࠊ」ᒙ໬ࡢ⏺㠃ᙧᡂ࡟㛵ࡍࡿᅽᘏࣉࣟࢭࢫࡢㅖ᮲௳ࡢᙳ㡪ࠊᅽᘏᚋࡢ⇕ฎ⌮ࡢᙳ㡪࡞࡝࡟ࡘ࠸࡚ㄪᰝࡍࡿࠋ
(2) ⥅⥆◊✲࡟࡞ࡗ࡚࠸ࡿ⁐᥋ᵓ㐀⏝㗰ࡢᇶᮏ
ᡂศ࡟ C, Nb, B ࢆኚ໬ࡉࡏࠊ┿✵⁐ゎ࡟࡚ヨ㦂∦ࢆస〇ࡍࡿࠋࡑࡢᚋࠊ⁐᥋⇕ᙳ㡪㒊┦ᙜࡢ⇕ࢧ࢖ࢡࣝࢆ௜୚ࡋ acicular ࣇ࢙ࣛ࢖ࢺࢆྵࡴ
⁐᥋㒊⤌⧊ࢆ෌⌧ࡋࠊ⤌⧊ほᐹࢆ⾜࠺࡜࡜ࡶ࡟ࠊ
࣎ࣟࣥࡢᏑᅾ఩⨨ࡢㄪᰝ◊✲ࢆ⾜࠺ࠋ(3) B ࡢ೫ᯒᣲື࡟ཬࡰࡍ Mo ࡢຠᯝࡸ⢏ෆᯒฟࢆྵࡵࡓ࣎ࣛ࢖ࢻࡢᯒฟᣲື࡟ཬࡰࡍ Mo ࡢᙳ㡪ࢆヲࡋࡃㄪ࡭ࡿࡇ࡜࡟ࡼࡾࠊ㗰୰ࡢ B ೫ᯒ࣭ᯒฟᣲື࡟ࡘ࠸࡚ゎ᫂ࡍࡿࠋ            (4)㠀㕲㔠ᒓศ㔝࡟࠾࠸࡚࣎ࣟࣥࡢྍど໬◊✲ࡣ⾜ࢃࢀ࡚࠸࡞࠸ࠋࡑࡇ࡛࣎ࣟࣥ㔞ࢆኚ໬ࡉࡏࡓ
Cu-B ྜ㔠ࢆ⁐ゎࡋࠊᙉᗘ࡜⇕ฎ⌮ࡢ㛵ಀ㸦✵
෭ࠊ⅔෭ᮦ࡞࡝㸧ࢆㄪ࡭ࡿࠋ
(5) 㧗ᙉᗘࣇ࢙ࣛ࢖ࢺ⣔⪏⇕㗰࡟࠾ࡅࡿ B ࡢᙳ㡪ࢆヲ⣽࡟ゎᯒࡍࡿࠋ࡜ࡃ࡟✀ࠎࡢ⇕ฎ⌮࡟࠾ࡅࡿ B ศᕸ࡜ࠊLaves ┦࡟ B ࡀ⃰໬ࡍࡿࡢ࠿࡞
࡝࡟ࡘ࠸࡚ㄪᰝ◊✲ࢆ㐍ࡵࡿࠋ

ㅰ㎡㸸
JRR-3 ࠾ࡼࡧ JRR-4 ୰ᛶᏊ↷ᑕ࡟㛵ࡋ࡚ࡣᮾி኱Ꮫ኱Ꮫ㝔ཎᏊຊᑓᨷࡢ▼ᮏග᠇Ặࡢከ኱࡞ࡿ༠ຊ࡟ࡼࡗࡓࠋࡲࡓ㧗ᙉᗘࣇ࢙ࣛ࢖ࢺ⣔⪏⇕㗰ࡢヨᩱ࡜ࢹ࣮ࢱࡢ୍㒊ࡣ᪥❧〇సᡤओ᪥❧◊✲ᡤࠊ᪂஭ᑗᙪẶ㸦ඹྠ◊✲㸧ࡢዲព࡟ࡼࡾᥖ㍕ࡋࡓࠋࡇࡇ࡟ឤㅰࡢពࢆ⾲ࡋࡲࡍࠋ

JRR-3㸦Ẽ㏦⟶↷ᑕ㸧ࠊJRR-4㸦་⒪⏝↷ᑕ㸧ࠊATE㸦Ș⥺ࢺࣛࢵࢡ࢚ࢵࢳࣥࢢ㸧ἲࠊ㕲㗰ᮦᩱࠊ࣎ࣟࣥ≧ែศᕸほᐹ

6-1- 301 -

㻝㻠㻝This is a blank page.

JAEA-Review 2013-040

お わ り に
本報告書は、研究炉（JRR-3、JRR-4）を利用した利用者の協力を基に、研究炉の成果を提出して頂き、研究炉利用課で編集したものであります。この成果を公表する事で、研究炉の今後の有効利用並びに利用拡大に役立つ事を期待します。

編集委員

編集委員メンバー
笹島文雄（研究炉利用課長）

高橋広幸（研究炉利用課）

大和田博之（研究炉利用課）- 303 -

JAEA-Review 2013-040

謝辞

本報告書の発刊にあたり、多くの皆様から多大なご協力を頂きました。
原稿を提出して頂いた利用者の皆様のご協力に感謝するとともに、今後も研究炉が有効に利用され、種々の研究がさらに進展されることを期待します。
編集に際し、ご協力頂いた、研究炉加速器管理部長 丸尾毅氏、研究炉加速器管理部
JRR-4管理課課長 木名瀬政美氏に深く感謝致します。

- 304 -

JAEA-Review 2013-040


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௜ 㘓


Appendixes- 305 -

This is a blank page.

JAEA-Review 2013-040

付 録

原科研研究炉の利用設備一覧
１．ＪＲＲ－３
１）実験設備
実 験 孔
１Ｇ
１Ｇ－Ａ
１Ｇ－Ｂ
２Ｇ
３Ｇ
４Ｇ
５Ｇ
６Ｇ
７Ｒ
Ｔ１－１
Ｔ１－２
Ｔ１－３
Ｔ１－４－１
Ｔ１－４－２
Ｔ１－４－３Ｔ１－４－４Ｔ１－４－５
Ｔ２－１
Ｔ２－２
Ｔ２－３
Ｔ２－４
Ｃ１－１
Ｃ１－２
Ｃ１－３
Ｃ２－１
Ｃ２－２
Ｃ２－３－１Ｃ２－３－２－１
Ｃ２－３－２－２
Ｃ２－３－３－１
Ｃ２－３－３－２
Ｃ２－３－３－３
Ｃ２－３－３－４
Ｃ３－１－１Ｃ３－１－２－１
Ｃ３－１－２－２
Ｃ３－２
E

実
験
装
置
高分解能粉末中性子回折装置（ＨＲＰＤ）
生体高分子用中性子解析装置（ＢＩＸ－Ⅲ）
生体高分子用中性子解析装置（ＢＩＸ―Ⅳ）
三軸型中性子分光器（ＴＡＳ－１）
中性子トポグラフィ及び精密光学実験装置（ＰＮＯ）
汎用三軸型中性子分光器（ＧＰＴＡＳ）
偏極中性子散乱装置（ＰＯＮＴＡ）
東北大学中性子散乱分光器（ＴＯＰＡＮ）
中性子ラジオグラフィ装置（ＴＮＲＦ）
中性子偏極回折装置（ＨＱＲ）
単結晶中性子回折装置（ＫＳＤ）
粉末中性子回折装置（ＫＰＤ）
即発ガンマ線分析装置（ＰＧＡ）
多重即発ガンマ線分析装置（ＭＰＧＡ）
ＴＯＦ型中性子反射率計（ＴＯＦ）
中性子ラウエ回折装置（ＬＡＵＥ）
中性子ベータ崩壊基礎測定装置
残留応力測定中性子回折装置（ＲＥＳＡ）
中性子４軸回折装置（ＦＯＮＤＥＲ）
多目的単色熱中性子ビームポート（ＭＵＳＡＳＨＩ）
高分解能三軸型中性子分光器（ＴＡＳ－２）
高エネルギー分解能三軸型中性子分光器（ＨＥＲ）
二次元位置測定小角散乱装置（ＳＡＮＳ－Ｕ）
超高分解能後方散乱装置（ＵＬＳ）
冷中性子散乱実験デバイス開発装置（ＬＴＡＳ）
高Ｑ領域対応中性子反射率計（ＳＵＩＲＥＮ）
中性子スピンエコー分光器（ＮＳＥ）
多重即発ガンマ線分析装置（ＭＰＧＡ）
即発ガンマ線分析装置（ＰＧＡ）
冷中性子ラジオグラフィ（ＣＮＲＦ）
パルス中性子機器開発装置（ＣＨＯＰ）
ＴＯＦ型中性子反射率計（ＴＯＦ）
中性子ラウエ回折装置(ＬＡＵＥ)
高分解能パルス冷中性子分光器（ＡＧＮＥＳ）
中性子光学システム評価装置（ＮＯＰ）
多層膜中性子干渉計／反射率計（ＭＩＮＥ）
中性子小角散乱装置（ＳＡＮＳ－Ｊ）
A

E- 307 -

JAEA-Review 2013-040２）照射設備
水 力 照 射 設 備
AＨＲ－１,２A気 送 照 射 設 備

E

ＰＮ－１,２E

放射化分析用照射設備

A

均 一 照 射 設 備

ＰＮ－３
ＳＩ－１

A

回 転 照 射 設 備

E

垂 直 照 射 設 備
A

ＤＲ－１
E

E

ＶＴ－１,ＲＧ－１～４
ＢＲ－１～４,ＳＨ－１

２．ＪＲＲ－４
１）実験設備プ
AールE

中性子ビーム設備
散 乱 実 験 設 備
AE

冷却水循環ループ
医療照射設備（ＢＮＣＴ）
即発ガンマ線分析装置
２）照射設備Ｔパイプ（水力）Ｓパイプ
簡 易 照 射 筒
A

E

Ｄパイプ
Ｎパイプ
気送管照射設備

ＰＮ- 308 -

国際単位系（SI）
表１．SI 基本単位
SI 基本単位

基本量

名称
記号
長
さメ ートル m
質
量 キログラム kg
時
間
秒
s
電
流ア ンペア A
熱力学温度 ケ ル ビ ン K
物 質 量モル mol
光度 カ ン デ ラ cd

表２．基本単位を用いて表されるSI組立単位の例
SI 基本単位
組立量
名称
記号
面
積 平方メートルm2
体
積 立法メートルm3
速 さ ， 速 度 メートル毎秒m/s
加速度 メートル毎秒毎秒
m/s2
波
数 毎メートルm-1
密 度 ， 質 量 密 度 キログラム毎立方メートル
kg/m3
面
積
密
度 キログラム毎平方メートル
kg/m2
比
体
積 立方メートル毎キログラム
電流
密
度 アンペア毎平方メートル
磁 界 の 強 さ アンペア毎メートル
量 濃 度 (a) ， 濃 度 モル毎立方メートル
質量
濃度 キログラム毎立法メートル
輝
度 カンデラ毎平方メートル屈折率 (b) （数字の） １
比 透 磁 率 (b) （数字の） １

乗数
24

10
1021
1018
1015
1012
109
106
103

3

m /kg
A/m2
A/m
mol/m3
kg/m3
cd/m2
1
1

102
101

表５．SI 接頭語
記号 乗数
接頭語
Ｙ
シ
10-1 デ

ゼ
タ
エ ク サ

Ｚ
Ｅ

10-2

ペ
テ

タ
ラ

Ｐ
Ｔ

ギ
メ

ガ
ガ

Ｇ
Ｍ

マイクロ
ノ
10-9 ナコ
10-12 ピ
10-15 フェムト

キ
ロ
ヘ ク ト
デ
カ

ｋ
ｈ
da

10-3
10-6

記号

セ ン チ
ミ
リ

ト
10-18 ア
10-21 ゼ プ ト
10-24 ヨ ク ト

d

c
m
µ
n
p
f
a
z
y

表６．SIに属さないが、SIと併用される単位
名称
記号
SI 単位による値
分
min 1 min=60s
時
h 1h =60 min=3600 s（a）量濃度（amount concentration）は臨床化学の分野では物質濃度（substance concentration）ともよばれる。
（b）これらは無次元量あるいは次元１をもつ量であるが、そのことを表す単位記号である数字の１は通常は表記しない。

d
°
’

日
度
分

表３．固有の名称と記号で表されるSI組立単位
SI 組立単位
組立量
他のSI単位による SI基本単位による
名称
記号
表し方
表し方
（ｂ）
平
面
角 ラジアン(ｂ)
rad
m/m
1
（ｂ）
(ｂ)
(c)
2/ 2
立
体
角 ステラジアン
sr
1
m m
周
波
数 ヘルツ（ｄ）
Hz
s-1
力
ニュートン
N
m kg s-2
圧力
応
力 パスカル,Pa
m-1 kg s-2
N/m2
エ ネ ル ギ ー , 仕 事 , 熱 量 ジュールJNm
m2 kg s-2
仕 事 率 ， 工 率 ， 放 射 束 ワット
WJ/s
m2 kg s-3
電
荷
電気量 クーロン,
CsA
電 位 差 （ 電 圧 ） , 起 電 力 ボルト
VW/A
m2 kg s-3 A-1
静電
容量 ファラドF
C/V
m-2 kg-1 s4 A2
電
気
抵
抗 オーム
Ω
V/A
m2 kg s-3 A-2
コ ン ダ ク タ ン ス ジーメンス
S
A/V
m-2 kg-1 s3 A2
磁
束 ウエーバWb
Vs
m2 kg s-2 A-1
磁
束
密
度 テスラ
T
kg s-2 A-1
Wb/m2
イ ン ダ ク タ ン ス ヘンリーH
Wb/A
m2 kg s-2 A-2
セ ル シ ウ ス 温 度 セルシウス度(ｅ)℃K
光
束 ルーメンlm
cd
cd sr(c)照度 ルクスlx
m-2 cdlm/m2
Bqs-1
放 射 性 核 種 の 放 射 能 （ ｆ ） ベクレル（ｄ）
吸収線量, 比エネルギー分与,
グレイ
Gy
J/kg
m2 s-2カーマ
線量当量, 周辺線量当量, 方向
Sv
J/kg
m2 s-2シーベルト（ｇ）
性線量当量, 個人線量当量酸素
活性 カタールkat
s-1 mol

1 d=24 h=86 400 s
1°=(π/180) rad1’=(1/60)°=(π/10800) rad”1”=(1/60)’=(π/648000) radha 1ha=1hm2=104m2
L，l 1L=11=1dm3=103cm3=10-3m3t
1t=103 kg

秒
ヘクタール
リットル
トン

表７．SIに属さないが、SIと併用される単位で、SI単位で表される数値が実験的に得られるもの
名称
記号
SI 単位で表される数値
電 子 ボ ル ト
ダ ル ト ン
統一原子質量単位

eV
Da
u

天

ua

文

単

位

1eV=1.602 176 53(14)×10-19J

1Da=1.660 538 86(28)×10-27kg
1u=1 Da1ua=1.495 978 706 91(6)×1011m

表８．SIに属さないが、SIと併用されるその他の単位
名称
記号
SI 単位で表される数値
バー
ル bar １bar=0.1MPa=100kPa=105Pa
水銀柱ミリメートル mmHg 1mmHg=133.322Pa(a)SI接頭語は固有の名称と記号を持つ組立単位と組み合わせても使用できる。しかし接頭語を付した単位はもはや
コヒーレントではない。
(b)ラジアンとステラジアンは数字の１に対する単位の特別な名称で、量についての情報をつたえるために使われる。
実際には、使用する時には記号rad及びsrが用いられるが、習慣として組立単位としての記号である数字の１は明示されない。
(c)測光学ではステラジアンという名称と記号srを単位の表し方の中に、そのまま維持している。
(d)ヘルツは周期現象についてのみ、ベクレルは放射性核種の統計的過程についてのみ使用される。
(e)セルシウス度はケルビンの特別な名称で、セルシウス温度を表すために使用される。セルシウス度とケルビンの単位の大きさは同一である。したがって、温度差や温度間隔を表す数値はどちらの単位で表しても同じである。
(f)放射性核種の放射能（activity referred to a radionuclide）は、しばしば誤った用語で”radioactivity”と記される。
(g)単位シーベルト（PV,2002,70,205）についてはCIPM勧告2（CI-2002）を参照。

表４．単位の中に固有の名称と記号を含むSI組立単位の例
SI 組立単位
組立量
SI 基本単位による
名称
記号
表し方
-1
粘
度 パスカル秒
Pa s
m kg s-1
力 の モ ー メ ン ト ニュートンメートル
Nm
m2 kg s-2
表面
張力 ニュートン毎メートル
N/m
kg s-2角
速度 ラジアン毎秒
rad/s
m m-1 s-1=s-1
角
加速度 ラジアン毎秒毎秒
rad/s2
m m-1 s-2=s-2
熱 流 密 度 , 放 射 照 度 ワット毎平方メートル
W/m2
kg s-3
熱 容 量 , エ ン ト ロ ピ ー ジュール毎ケルビン
J/K
m2 kg s-2 K-1
比 熱 容 量 ， 比 エ ン ト ロ ピ ー ジュール毎キログラム毎ケルビン J/(kg K)
m2 s-2 K-1
比 エ ネ ルギ ー ジュール毎キログラム
J/kg
m2 s-2
熱伝
導率 ワット毎メートル毎ケルビン W/(m K) m kg s-3 K-1
体 積 エ ネ ル ギ ー ジュール毎立方メートル J/m3
m-1 kg s-2
電界の強さ ボルト毎メートル
V/m
m kg s-3 A-1
電荷密
度 クーロン毎立方メートル C/m3
m-3 sA
表面
電
荷 クーロン毎平方メートル C/m2
m-2 sA
電 束 密 度 ， 電 気 変 位 クーロン毎平方メートル C/m2
m-2 sA誘
電率 ファラド毎メートル
F/m
m-3 kg-1 s4 A2
透磁率 ヘンリー毎メートル
H/m
m kg s-2 A-2
モ ル エ ネ ル ギ ー ジュール毎モル
J/mol
m2 kg s-2 mol-1
モルエントロピー, モル熱容量 ジュール毎モル毎ケルビン J/(mol K) m2 kg s-2 K-1 mol-1
照 射 線 量 （ Ｘ 線 及 び γ 線 ） クーロン毎キログラム
C/kg
kg-1 sA
吸収線
量率 グレイ毎秒
Gy/s
m2 s-3放射
強度 ワット毎ステラジアン
W/srm4 m-2 kg s-3=m2 kg s-3
放射輝
度 ワット毎平方メートル毎ステラジアン W/(m2 sr) m2 m-2 kg s-3=kg s-3
酵 素 活 性濃 度 カタール毎立方メートル kat/m3
m-3 s-1 mol

接頭語
ヨ
タ

オングストローム
海
里
バ
ー
ン

Å
Ｍ

１Å=0.1nm=100pm=10-10m
１M=1852m

b

ノ
ネ
ベ

ト
パ
ル

kn
Np
Ｂ

１b=100fm2=(10-12cm)2=10-28m2
１kn=(1852/3600)m/s

ル

dB

ッ
ー

デ

ジ

ベ

SI単位との数値的な関係は、対数量の定義に依存。

エ

表９．固有の名称をもつCGS組立単位
名称
記号
SI 単位で表される数値
ル
グ erg 1 erg=10-7 J

ダ
ポ

イ
ア

ス
ス

ト ー ク
チ
ル

フ
ガ

ォ

ン dyn 1 dyn=10-5N
ズ P 1 P=1 dyn s cm-2=0.1Pa s
ス St 1 St =1cm2 s-1=10-4m2 s-1
ブ sb 1 sb =1cd cm-2=104cd m-2
ト ph 1 ph=1cd sr cm-2 104lx
ル Gal 1 Gal =1cm s-2=10-2ms-2

マ ク ス ウ ｪ ルガ
ウス
エルステッド（ ｃ）

Mx
G
Oe

1 Mx = 1G cm2=10-8Wb

1 G =1Mx cm-2 =10-4T
1 Oe (103/4π)A m-1（c）３元系のCGS単位系とSIでは直接比較できないため、等号「は対応関係を示すものである。

キ
レ
ラ

名称
ュ
リ
ン

レ
ガ

ト

表10．SIに属さないその他の単位の例
記号
SI 単位で表される数値
ー Ci 1 Ci=3.7×1010Bq

ゲ

ン

ン R
ド rad
ム rem
マ γ

1 R = 2.58×10-4C/kg

1 rad=1cGy=10-2Gy
1 rem=1 cSv=10-2Sv
1γ=1 nT=10-9T

1フェルミ=1 fm=10-15m

フェルミ
メートル系カラット

1メートル系カラット = 200 mg = 2×10-4kg

気

ル Torr 1 Torr = (101 325/760) Pa
圧 atm 1 atm = 101 325 Pa

ロ

リ

ー

cal

ク

ロ

ン

µ

ト
標

準

カ
ミ

大

」

1cal=4.1858J（｢15℃｣カロリー），4.1868J（｢IT｣カロリー）4.184J（｢熱化学｣カロリー）

1 µ =1µm=10-6m（第8版，2006年改訂）

この印刷物は再生紙を使用しています