1

Contents

2

1 Prefac

5

2 Research Digest

7

3 Message from Foreign Participants

21

4 Members

25

5 Research Life31

6 Prizes and Awards

33

7 List of Collaborative Research

37

8 Research Funds

41

9 List of patents

47

10 List of Presentations

49

11 List of Publications

69

12 Copies of Selected Papers

73

13 List of TV, Journals and Newspaper Items

123

14 Copies of News and Newspaper Items

125

15 Committees of Academic Societies and Conferences

133

16 List of Events

135

17 Events and Memories

137

Preface
The report in your hands is intended to give a general impression about research activityof Yoshikawa Group in the Institute of Multidisciplinary Research for Advanced Materials(IMRAM), Tohoku University. This is the fourth report of our group, established in April,
2007. It contains a summary of our various activities and copies of our selectedpublications. We hope that you will find it interesting and informative.
We somehow survived from the Tohoku earthquake (March 11, 2011). Thank you verymuch for the kind help from all over the world. All of the crystal growth furnaces andsome of the characterization equipments were damaged. However, we will do our best to
recover and overcome all the possible difficulties.
Current issue covers our activity within academic year from April 2010 to March 2011.
Within this period we put our efforts to develop our key technologies and understand thescience behind them. This year, there are three main highlights. The first one is thecontinuous progress of the development of 6LiCAF for neutron detection as an alternative
to 3He. The second one is the establishment of micro-pulling down method for halidematerials. Now, it is available for growth of hygroscopic materials like LaBr3 by the
micro-pulling down method. The third one is a new scientific topic. The national project
about shaped crystal growth of CNGG for combustion pressure sensor has been started.
When we try to develop novel scintillator crystals, there are plenty of topics, which wehave to study, such as design of the host lattice from the point of view of solid statechemistry, single crystal growth technology, optical characterization, understanding
luminescence processes, searching for the suitable photodetector, reflector, light guide andso on. Growth and characterization of oxide, fluoride and other halide scintillator crystals
were performed together with the development or search for suitable photodetector.
This year, we attempted to apply this concept to other topics such as piezoelectricmaterials and got positive results.
These activities are always supported by our colleagues from all over the world throughthe fruitful collaboration.
Details of these studies can be found in the photos and papers published within theabove period and included in this report.
All the members of our group took part in preparation of this report. I appreciate theirefforts very much. I wish also to thank to all of our colleagues from Japan and overseas
who had participated in our research and significantly contributed to the progress of our
projects.
Akira YOSHIKAWA

Associate Professor,
Division of Physical Process Design,
Institute of Multidisciplinary Research, for Advanced Materials,
Tohoku University
March, 20104

Research Digest

67Research Activities in 2010
Development of
Scintillator, Laser, Piezoelectric martial
and Crystal growth technology

Materials for gamma-ray detection
Multicomponent garnet scintillators

Int’l collaboration

Inst. Phys. (Czech), Pisa Univ. (Italy), Milan-Bicocca Univ. (Italy),
Ecole Polytechnique (France), Univ. Lyon1 (France),
Soltan Institute for Nuclear Studies (Poland), Delft Univ. (New Zealand)

Fluoride
Scintillator

Oxide
Scintillator

Neutron imager,
VUV scintillator

HalideScintillator

Other garnets

PEM
PET/MRI

Multidisciplinary Researchfor“Crystal” and “Ceramics”
Laser, etc…

High light yield
42000 photons/MeV!!

Perovskites

LuAG:Pr
Optimization anddevelopment of LuAG:Pr
for medical imaging

Transparent
Ceramics
Scintillator

G-PMT, APD, MPPC,
MSGC, GaN, …

Pr:LuAG array

PSPMTsCompany
8Tokuyama, Furukawa, World Labo, MGC, Kobe Steel, Koike, KDK
Murata Manufacturing, Canon, Chiyoda technol, Nihon Kessho Kogaku

YAP:HoRead out LSIs

Materials for neutron detection
1000

CountsB-containing crystals

LiAlO2:Ti0.1%
Li Glass(GS20 St.Gobain)

100
10
1
01
0.1

Univ. of Tokyo (Kamiokande, Takahashi Lab.), Kyoto Univ.(Tanimori Lab),
Osaka Univ.(Sarukura Lab), Nagoya Univ. (Iijima Lab, Uritani Lab, Iguchi Lab),
Hiroshima Univ.(Fukazawa Lab), Kyushu Univ.(Ishibashi Lab), Waseda Univ. (Kataoka Lab)

YAP:Nd

YAP:ErDevelopment of
new photodetectors

Univ., National Inst.

LuAG:Nd

Intense emission
in the VIS region

Li-containing crystals

Other Crystalline
Materials

Balanced composition band gap engineering andenergy-level positioning

mPD-grown Ti-doped LiAlO2

40

60 80 100
Channel number

300

Neutron light yield higher
than for Li-glass scintillator

Modification ofmPD method for
self-flux growthwith Li-excess
LiAlO2(melt)/Li2O(melt) =LiAlO2(crystal)/Li2O(evaporation)=constantCZ-grown Ce-doped Ca3(BO3)2

Ce3+ 5d-4ftransition
9

Development of fluoride scintillator
The micro-pulling-down method modified
for fluoride crystal growth

functional fluorides

We prepare new halide materials for radiation detectors as scintillators andphotodetectors. Singlepg crystals
yof CsI, CeCl3, Ce:LaBr3 and RbPb2Br5 weregrown by the micro-pulling-down (m-PD) method and by the vertical
Bridgman method. Prepared crystals are shown below.

Carbon insulator
Carbon crucible
Carbon insulator
Induction coilMelt
CaF2 window

Carbon afterheater
Growing crystal
Carbon stageSeed
SUS Chamber

CCD camera
Rotary pump
Diffusion pumpExperimental arrangement of halide mm-PD machinemachine.
High-frequency induction coil

~10-3Pa

CCD camera
Turbo molecular pump

Development of Halide Scintillators for High Resolution Fast X-ray CT
2008-2010 Ministry of Health, Labour and Welfare Grant, PL: Akira Yoshikawa
Problems of present X‐ray CT

Next generation X‐ray CT

1. Large exposure ＞10 mSV
2. PSF ～ 0.5mm: worse than MRI
3. Low S/N of PD, high cots

1. Fast response (few ns、 1 mSV)
2. High resolution by MPGC ～ 0.075 mm
3. High S/N by MPGC (gain = 3000), Low cost

Grown by mm-PD in different crucibles

Excitation
6Li
6Li

α-ray REin quartzcrucible

Scintillationgraphitecrucible

6Li

0
0
0
1

0.4
0.2

400

600

800

Wavelength (nm)

0
.
0
1
0
0
2

0
0
1

0

m
n

l
e
n
n
a
h
C
A
C
M

0
0
8

0
0
7

0
0
6

h
0
0 t
5 g
n
e
l
e
v
a
W

0
0
4

0
0
3

0
0
2

Chlorides and bromides
grown by m
m--PD

CsI:W

0.6

200
0
1

2
.
0

︶

CsI:Tl

0.8

0

0
0
1

4
.
0

︵

Eu doped 6LiCaAlF6 single crystal with 2-inches in diameter

︳

0
0
0
0
1

6
.
0

s
t
n
u
o
C

X ray exited luminescence spectra
X-ray-exitedof CsI crystals grown in different
crucibles.

Streak image of Nd:LuF3

︳

8
.
0

y
t
i
s
n
e
t
n
I
d
e
z
i
l
a
m
r
o
N

CsI:W
1

e
l
b
e
i
l
c
b
i
u c
r
u
c
r
c
e
t
i z
h
t
p r
a O
a u
G
r
G Q B

Graphite_crucible
Quartz_crucible
Water-doped

0.
1

Scintillator crystal
Luminescence mechanism of neutron scintillator.

CsI:TlCsI prepared in

0
0
0
0
0
1

6Li

CsI preparedτ = 7.6 nsec

Radioluminescence spectra of
Nd:LaF3, Nd:LuLiF4 and Nd:LuF3

Grown by vertical Bridgman method【Luminescence center】
Electronic orbit transition
luminescence of RE ions

Neutron

Nd:LuLiF4 single crystal

Setting chamberin glovebox

Removable chamber

Neutron scintillators alternatives to 3He
Reaction
6Li ＋n → 3H ＋α-ray

Nd:LuLiF4 single crystal

CrystalgrowthNormalizedd Intensity

VUV Scintillator single crystal

Removable chamberLight yield of the CsI crystal grown inthe quartz-crucible exceeded the lightyield of BGO.

CeCl3 single crystal

X-ray-exited luminescence spectra of
doped CsI crystals.

Liquid-solidinterface
Photoluminescence spectra

Pure RbPb2Br5
singleg crystaly
Ce1%:LaBr3 single crystal

Schematic drawing of the detector for photon counting (left) andthe
10 obtained image with VUV crystal (right)

Neutron–gamma discrimination based on pulse shapediscrimination in a Ce:LiCaAlF6 scintillator

11

Transparent Ceramics Scintillator
 Introduction

 Pictures of transparent garnet ceramic
scintillators

 Ceramics are cluster of single crystals
SEM image of transparent ceramics

Single crystalline particles
with micro particles

Ceramic scintillators manufactured via sintering
Pr:LuAG ceramics

Transparent ceramics produced by
Konoshima Chemical Co., Ltd.

0.6%

1%

UBA
>40 %
(left) Ce:YAG single crystal(right)YAG ceramics

2%

Single Ce:YAG
Poly Ce:YAG

We use Ultra Bialkali
Photomultiplier tube (PMT)
R7600U as a standard PMT for
pulse height measurement.
Ultra Bialkali (UBA) R7600U

Yb:YAGT. Yanagida, et al., Proceedings of Scintillating
Crystals and their Applications (KEK), 105-110 (2004).

In spark plasma sintering (SPS), sintering time isvery short (order of minutes). Around 10 hours are
required for vacuum sintering.
Different behavior of dopant distribution is
expected between them

Sugiyama et al.
http://www.google.co.jp/url?sa=t&rct=j&q=UBA%2Bhamamatsu&source=web&cd=2&ved=0CCcQ
FjAB&url=http%3A%2F%2Fhamamatsu.com%2Fresources%2Fproducts%2Fetd%2Feng%2Fhtml%2F
pmt_003.html&ei=osSyToTxHc_xmAXhuLTEAw&usg=AFQjCNHNQsJKAb‐JYXNkZCA4KlQBhOumJA Photograph of evaluated samples

Ce 0.5%:YAG Ce 0.5%:GYAG #1 Ce 0.5%:GYAG #2
φ20× t2
φ20× t1
φ15× t2

Pulse height spectra

2, Semi‐conductor

 Ce:GYAG (Ce:(Gd,Y)3Al5O12) ceramics

 Pulse height spectra
excited by 137Cs

APD (avalanche photodiode)

PMT : R6231, Hamamatsu

Light yield
Size(PMT : R6231,
Φ[mm] × t[mm] Hamamatsu)
20 × 2.0
20 × 1.5
20 × 1.4
25 × 0.5

1.12
1.15
0.3
1

Decay
time [ns]MPPC andthe readout circuit• Ce 0.5%:GYAG #1 showed poor transparency (～1%) while that of #2 is improved to～10% thanks to annealing.
• The photopeak count rate at 662 keV of the two GYAG ceramics, normalized to theirvolumes is about five times as large as that of YAG ceramic.

 137Cs spectra (PMT : R7600, Hamamatsu)
Ceramics
CrystalΔE～4.3%Ceramics
Crystal5d-4f
Anti-site Dopant distribution in Ce:GYAG
ceramics prepared by sintering
Grain Boundary (GB)Towards the center ofa grainSampleΦ × t[mm]Ceramic Ce 0.5%:YAG

10 × 0.8

Measurement set up
for the APD and MPPCGood photon counting

3, Gas detector
We have developed a new
Gaseous radiation detector(gas PMT) using a micro pixel
chamber (‐PIC)

15
10

4f-4f

Concentration quenching occurs at GB• Ceramic and crystal Pr:LuAG showed • The light yield of the ceramic was almost the half time ofthat of the single one.
almost the same properties.
• The ceramic had 70% transmittance. • The slow scintillation decay component due to anti-site
defects in LuAG host significantly suppressed in ceramics.

 Supression of dopant
enrichment at GB by SPS
Sintering process

Sintering time

Vacuum sintering

Around 10 hours

SPS

Order of minutes

300

400
500
600
700
Wavelength,  / nm

800

900

 α-ray response

Schematic diagram of SPS

There will not be much time for dopants todiffuse toward GB.



5
0
200

4f-4f

Loss of light yield

12

MPPC (Multi‐Pixel Photon Counter) Transmittance spectra

ΔE~10%

Ceramic
Single400 mHigh quantum efficiency (up to ~80%)
80%)
Wide sensitive range(ex: 320 ‐1000 nm for S8664 HPK)

 Spa
Spark Plasma
as a S
Sinteringe g (S(SPS)S)

 Pr 0.25%:LuAG ceramics

5d-4f

5 cm

78, 294
81,, 263
108, 299
48, 499• Ceramics had high transparency (～80%) at wavelengths longer
than 500 nm.
• Ce 0.05%:YAG ceramic showed 1.15 times higher light yield than
the single crystalline one.

 Transmittance spectra Photoluminescence
spectra (λex=340 nm)

Transmittance, T / %Ceramic Ce 0.5%:YAG
Ceramic Ce 0.05%:YAG
Ceramic Ce0.005%:YAG
Single crystal Ce:YAG

Different sintering process TransmittancespectraIntensity / a. u.

SampleAPD

λex=340 nm

BGO (Bi12GeO20) scintillator witha light output of ~8,000
photons/MeV is used standard
crystal for measurement of light
output of a sample.

YAG ceramics manufactured via SPS

Tl:CsI Photoluminescence spectra

25 %conventional(left) Ce:GYAG = Ce:(Gd,Y)3Al5O12((center)) Ce:YAG (right)Ce,Nd:YAG( g ) ,

Ce:YAG

 Transmittance spectra

1, Photomultiplier Tube

Ce:YAG ceramics

 Advantages of transparent ceramic scintillators
compared to single crystalline scintillators Ce:YAG ceramics

We investigate radiation reactions of our scintillators using a photomultiplier tube andsemi‐conductor, and we have developed new gaseous detector.

5 mm3

Pr 0.2%

EconomicalE
i l especially
i ll ffor hi
high-meltinghlti pointi tmaterials
 Possibilities that ceramics show better
scintillation properties

Photodetectors

200

241Am α-ray

10 cm

excitation

300

400
500
Wavelength,  / nm

600



700

Ce 0.5%YAG ceramic preparedby SPS showed poortransparency and almost sameemission spectrum compared to
one prepared by sintering.

‐PIC

Nd:LaF3 (20 cm x 20 cm x 20 cm ) andtreconstructed image with the gas PMT

Sensitive to VUV((Photo cathode: CsI))Good position resolution(400‐m pitch anode )Large detection area
(up to 1 m3)
13

Development of Shaped Crystals by μ-PD method

Development of Piezoelectric single crystals
Langasite‐type piezoelectric crystals

Fiber growth

Fiber

Micro-pulling-downpg
method+Rod

Bulk growthplate• High piezoelectric constant.
• High operating temperature limit (~ 1000 ºC)• However, the production cost of crystals ismuch higher than that of quartz.

RodSpeciallypy designedgcrucibDevice size Shaped crystal

Langasite-type
piezoelectric crystals

Combustion sensor

Growth of Shaped crystal
by the -PD method

available
il bl to grow square, rod,d tubeb shapehandd any otherh shapedhdcrystals

Other shaped crystals

SquareRod
Ce:LiYF4

PrF3

Flexible fiber crystal

BGO fiber
φ50 µmNaCl

Pr: LuAG

Ce:CaF2

undoped YAP
Pr,Yb : KYF
Co: LuAG

undoped LuAG

Plate

Sapphire

Tube

Achievement of low cost combustion sensor
CNGS

CTGS

Piezoelectric constant

Pr : YAP

C L
Cr:
LuAG
AG

CaF2 Tube

Ce : YAP
Ti: LuAGMultiple die

SNGS

STGS

LTG

Electrical resistivity

undoped LuAG 3 crystals grown from multi-die

6 crystals grown from multi-die

Sapphirepp
2 crystals grown from multi-die

14

Sapphire

Shaped langasite-type crystals showed equivalent15
physical properties to the crystals grown by Cz method.

16

17

18

19

Message from Foreign Participants

20

21

Message for Annual report from Jan Pejchal
Our laboratory in Prague, where I worked on my Master and PhD degree, hadalready had the long-term collaboration with Prof. Fukuda and later with Prof.
Yoshikawa on the development of new scintillation materials.
Already since May 2008, having successfully finished my PhD studies, I had a great
opportunity to work in the Yoshikawa group as a JSPS fellow for 2 years. This was myfirst encounter with the micro-pulling-down method, a unique technique to grow a single
crystal in a relatively short time. Therefore, it is suitable for rapid material composition
screening in the new materials research and this research group is a leader in utilizationand further development of this technique in Japan.
The beginning with the crystal growth using this method was a little bit difficult andfor an extended period of time I was not able to get any crystal. After helpful discussions
with colleagues at research meetings, which are regularly held in this lab, and further
studies about this method, I delved myself into the crystal growth and successfully
prepared my first crystal, LaF3:Er 1%. I can still remember well the exact composition it
as it was my first crystal ever. After some time, success was gradually coming and quite a
lot of research was done on the grown crystals resulting in several publications andpresentations on international or Japanese conferences.
On the other hand, I was always very glad to share my knowledge about
luminescence and scintillation properties of crystals, which I gained during my studies inPrague and help with the interpretation of the luminescence results. In Japan, I was awayfrom my home laboratory and therefore I had to become more independent when dealing
with the studies of the optical and luminescence properties of crystals. This has also leadto extension of my knowledge in this field.
As Yoshikawa group has very strong international collaborations, during my stay I
had an opportunity to meet many scientists which are world-famous in the fields ofluminescence or crystal growth, for example Prof. G. Boulon from France, Prof. V.
Kochurikhin from Russia or Prof. V. Chani from Canada.
When my JSPS fellowship was about to finish in May 2010, there was anopportunity to continue the research in this lab as a researcher of the Japanese
Association for the Advancement of Medical Equipment. I immediately agreed and I
would never regret this decision. That one year was successful and I could again extend
my research experience and knowledge in crystal growth.
During the three years, I had also an opportunity to explore some nice places inJapan and also the Japanese culture. Visiting the islands of Matsushima, climbing the Mt.
Fuji or watching the dances on the Aoba Matsuri festival were some of the many
spectacular memories of my stay in this interesting country. Onsen is also one of the great
Japanese inventions, especially when it is situated next to a ski resort.
I would like to thank to Prof. Yoshikawa and the members of the team for enabling
my stay and supporting me in conducting research in this lab. I hope our collaboration
will still successfully continue.

Message for Annual report from Robert Kral
(Institute of Physics Academy of Sciences of the Czech Republic, Prague, Czech
Republic)
My collaboration with Prof. Yoshikawa and his group started in the year 2009 basedon a previous cooperation of Prof. Yoshikawa and Dr. Nikl from our Institute of Physics
AS CR. Dr. Nikl asked me to participate on his and Prof. Yoshikawa’s bilateralproject ”New material conceptions for fast scintillators” (2009-2012) from the Czech
Science Foundation. Purpose of this project is development of new materials for opticalapplications using the micro-pulling-down method, which is well established in Prof.
Yoshikawa’s laboratory.
During this project, I have visited Prof. Yoshikawa’s laboratory for three times, every
time for 1 to 2 month. Each visit, I prepared single crystals of halide materials by the
micro-pulling-down method. All the starting halide materials were prepared and purified
at our laboratory at the Institute of Physics. Our laboratory has a long experience withpreparation and purification of halide materials and their crystal growth by the vertical
Bridgman method. And a possibility of their preparation by the micro-pulling-down
method was a nice and interesting challenge.
At the beginning, our interest was focused on preparation of lead chloride (PbCl2)
doped and undoped single crystals, but later on our effort aimed on preparation of moreinteresting materials such as rubidium lead chloride and rubidium lead bromide(RbPb2Cl5 and RbPb2Br5) or cesium dicerium chloride (CsCe2Cl7), which are moredifficult to grow.
During my stays, I also tried to get to know Sendai and its surroundings. With mycolleague Jan Pejchal, we had gone for several hiking trips in the mountains around
Sendai. I had always enjoyed the view from the top of a mountain on a beautiful
surrounding landscape which is completely different from that in the Czech Republic. I
remember that on the top of Taihaku-san Mountain, we had experienced small
aftershocks from a faraway earthquake. My first earthquake on the top of a mountain!
And also another new experience was at the laboratory symposium which took place at
Sakunami onsen. We were given a chance to try beautiful inside or outside pools filledwith volcanic spring hot water with relaxing effects on our bodies and minds.
I am very grateful for the opportunity to participate on this project and to visit Prof.
Yoshikawa’s laboratory. It is a very nice experience during which I met all the membersof the group who supported me and encouraged me whenever I needed help. All thesestays gave me a lot of experience and gave me chance to prepare single crystals by othermethod than Bridgman. It has also extended my overview and my skills in the field of
crystal growth. I hope this cooperation will successfully continue and I am looking
forward to next visit at Prof. Yoshikawa’s laboratory.

Sincerely Yours

22

23

Message for Annual report from Nils Lundt
I am Bachelor student at the University of Erlangen-Nürnberg, Germany and work in our
department of material science on phosphors. As I was looking for some practicalexperience in a foreign country my professor told me about Prof. Yoshikawa’s group at
Tohoku University. There had been some cooperation between our groups, so I was easy
to contact Prof. Yoshikawa. As I was very interested in doing research in the field ofscintillator materials (closely related to my field of research) Prof. Yoshikawa invited me
to work in his group for two month.
I started to work there mid of February 2011. In the first weeks I was studying thetheoretical fundamentals of scintillator materials and started to grow some single crystals
under supervision of Jan Pejchal. In particular getting to know the micro pulling down
technique was very exciting for me. Unfortunately, I had to cancel my stay in Sendai
after three weeks at work due the uncertain situation after the earthquake on 11th ofMarch 2011.
Nevertheless I enjoyed my time in Sendai very much. It was very exciting to explore
Sendai and Miyagi Prefecture and I had a great time there. The skiing weekend at Mt.
Zao with Prof. Yoshikawa’s group was one these many highlights, I will never forget.
Finally I want to thank Prof. Yoshikawa for inviting me to work in his group, Mr.
Uemura for his help to organize my stay and Jan Pejchal for his very helpful supervision
at work as well as at private activities. Furthermore I want to thank all other members ofProf. Yoshikawa’s group for their help and advice. I am very grateful that I had theopportunity stay in Sendai and hope to come back some day.

Members

Sincerely Yours
Nils Lundt

24

25

Members of Yoshikawa GroupFirst grades Mastercourse student
M Sugiyama
M.

Second grades Mastercourse student
H Tanaka
H.

Second grades Mastercourse student
Y FuruyaY.

Researcher
M.SatoSecond grades Ph.D student
Y. Fujimoto

Researcher
K. KamadaK

Researcher
K. Fukuda
K

Researcher
N. Kawaguchi
N

Researcher
D Totsuka
D.

Research Fellow
H OginoH.

Research Fellow
M SatoM.

Associate Professor
A Yoshikawa
A.
Y hik

Third grades Ph.D student
A. Fukabori

Associate Professor (from 2010.2)
T. Yanagida
Technical Counsellor
H. UemuraResearch Assistant Professor
Y. Yokota

Researcher
V. Chani

Secretary
A. Imai

Researcher
A. Yamaji

Engineer
K. Toguchi

26

Post Doctral Fellow
J. Peichal
27

2010 年度 河村研・吉川グループ
Members (2010 academic year)

4.1.2010

Professor
Dr.

Junichi Kawamura

研究所等研究生

河村純一

Kentaro Fukuda

福田 健太郎（株）トクヤマ／Tokuyama Corporation

Associate Professor

准教授

Noriaki Kawaguchi

河口 範明（株）トクヤマ／Tokuyama Corporation

Dr.

吉川 彰

Akira Yoshikawa

Associate Professor
Dr.

Takayuki Yanagida

Research Assistant Professor
Dr.

Yuui Yokota

Post Doctral Fellow
Dr.

Jan Pejchal

Technical Counsellor
Hiroshi Uemura
Secretaries
Akiko Imai
Researcher

鎌田 圭

古河機械金属株式会社／Furukawa Co.Ltd.

助教(研究特任)

Daisuke Totsuka

戸塚 大輔

日本結晶光学株式会社／
Nihon kesshokougaku Co.Ltd.

横田 有為

Masato Sato佐藤 真人

TDK 株式会社

ヤン ペジャール

Czech

技術参事

Dr.

Dr.

秘書

リサーチフェロー

Hiraku Ogino

荻野 拓

東京大学工学系研究科

Moitsuhiro Sato

佐藤 光浩

野村證券金融工学研究センター

Visiting Professors/Researchers

上村 博

Touetsu Shishido

客員教授
宍戸 統悦

日本

Prof. Georges Boulon

ジョージ ブーロン

France今井 亜希子Dr.

Martin Nikl

マーチン ニクル

Czech Republic

産学官連携研究員

Dr.

VladimirV.Kochurikhin

ヴラディミール カチューリッヒン Russia

ワレリー チャニ

Canada

技術補佐員
戸口 景子
大学院生

Akihiro Fukabori

深堀 明博

D3

Yutaka Fujimoto

藤本 裕

D2

Yuuki Furuya

古谷 優貴

M2

Hidehiko Tanaka

田中 秀彦

M2

Makoto Sugiyama

杉山 誠

M1

Robert Kral

Dr.

Research Fellow

学振外国人特別研究員

Valery Chani

Graduate Students

民間等共同研究員
Kei Kamada

柳田 健之

山路 晃広

Keiko Toguchi

NICHe 兼任

准教授（2010.2 助教（研究特任より就任））

Akihiro Yamaji

Engineering Staffs

28

Researchers

教授、 所長B4 (2011.2 – 2011.3)

29

Research Life

30

31

One year has been passed since I joined the Yoshikawa
laboratory. I was able to enjoy my research life through theattendance of many conferences and contribution of papers
in good journals. I studied scintillation properties of rareearth doped LuAG single crystals, which can be a
candidate for an X-ray imager by combining the materials
with the Si-based detectors. The study is very interesting
topic for me and I think that it is a challenging research.
Makoto Sugiyama（M1）

In addition, a lot of events like cherry-blossom viewing
were held and these events were very enjoyable. Especially,
Imoni-party which took place in Tennessee was the mostimpressive experience in 2010. In this party, I met staffs
and students in Melcher laboratory and had a goodcommunication with them.
My last year of the master course has begun recently. I

Prizes and Awards

will keep working on my research to obtain good results.

32

33

受賞等
Prizes and Awards
1. 吉川 彰”次世代 PET 用 GaN-AlN 系ワイドギャップ受光素子の開発”
財団法人稲森財団・平成 22 年度稲森財団研究助成（2010 年 4 月 17 日）
2. 河口 範明
"高時間分解能Ｘ線・ガンマ線検出器用シンチレーター結晶の開発"
日本電子材料技術協会 第 47 回秋期講演大会 優秀賞 (2010 年 11 年 19 日)

34

35

List of Collaborative Research

3637Visits to International Collaborator 2010

Visits by International Collaborator 2010
Affiliation

Researcher

Research Theme

General Physics Institute(Russia)

Dr. V. V. Kochurikhin
Ms. L.Gushchina

Growth of bulk single crystals and automatic
diameter control of Czochralski growth

LPCML, CB Lyon1 Univ.
(France)Prof. G. Boulon

Laser and nonlinear materials and theirspectroscopic properties

Consulting company(Canada)Dr. V. I.Tchani

Growth of piezoelectric single crystals by
micro-pulling-down method

Institute of Physics ASCR
(Czech Republic)

Dr. M. Nikl
Mr. R. Král

Characterization of various scintillator
materials

Dr. Myrzakhmet

Growth of bulk single crystals by micropulling-down method

Eurasian National University(Kazakhstan)

The University of ErlangenMr. L. Nils
Nürnberg(Germany)

Growth of bulk single crystals by micropulling-down method

Seminar at Yoshikawa Group 2010
Date

Affiliation

March 4

Institute of Physics ASCR
(Czech Republic)

SpeakerDr. M. Nikl

Title of speech

Affiliation

Period of stayInstitiuto de Pesquisas
Energeticas e Nucleares Centro
de Lasers e Aplicacoes(Brazil)

Prof. Yoshikawa

May 15 - 16

Aldrich APL(U.S.A)

Prof. Yoshikawa,
Mr.Fukuda, Mr.Kawaguchi

May 30 - 31

DESY in Hamburg(Germany)

Dr. Pejchal

June 21 - 28

Institute of Physics ASCR
(Czech Republic)

Dr. Pejchal

June 29 - July 10

Shanghai Institute of Ceramics
Chinese Academy of Science(China)Prof. Yoshikawa,
Dr.Yokota, Mr.Fukabori,
Mr.Fujimoto

August 15 - 16

Pennsylvania State University
Materials Research Institute(U.S.A)

Prof. Yoshikawa,
Dr.Yokota, Mr.Toota

October 28 - 29

SrHfO3-based phosphors andscintillators
The University of Tennessee
Scintillation Materials ResearchCenter (U.S.A)

Claude Bernard Lyon 1
University(France)38

Researcher

Prof. Yoshikawa, Dr.Yanagida
Dr.Yokota, Dr.Kamada,
Mr.Fukuda, Mr.Kawaguchi,
Mr.Totsuka, Mr.Fujimoto,
Mr.Yamaji, Mr.Furuya,
Mr.Sugiyama
Prof. Yoshikawa, Dr. Yanagida
Mr.Fujimoto, Mr.Sugiyama

November 1 - 5

December 7 - 1039

Research Funds

40

41

平成 22 年度 研究資金
Research funds (2010 fiscal year)【内閣府 （研究管理機関：日本学術振興会）】
The Cabinet Office (In charge: Japan Society for the Promotion of Science)
1.

最先端・次世代研究開発支援プログラム
Funding Program for Next Generation World-Leading Researchers (NEXT Program)「次世代癌治療用近赤外線発光シンチレータの系統的研究開発」"Systematic study of infrared photon emitting scintillators for cancer therapy”
研究代表者：吉川 彰
Project Leader: A. Yoshikawa
150,080,000 yen/3years, 2011.2 ~ 2013.3( 130,000 yen in 2010FY)【経済産業省－東北経済産業局】
Tohoku Bureau of Economy, Trade and Industry
The Ministry of Economy, Trade and Industry
1. 戦略的基盤技術高度化支援事業(サポイン)
Funding Program for Strategic Support Industry「ランガサイト型圧電結晶の形状制御単結晶作製装置及び作製技術の開発」“Developments of growth furnace and technique on shape-controlled langasite-type
piezoelectric single crystals”
メンバー：青山精工・秋田精工・高周波ネッスル・東北大学
Menber: Aoyama seikou Inc, Akita Seiko Co, High frequency nestle Co.
アドバイザー：TDK
Adviser: TDK
Total: 98,080,000 yen/1year, 2011.2 ~ 2011.12( 17,400,000 yen for our team)

42【JST プロジェクト】
Japan Science and Technology Agency
1. JST研究成果最適展開支援事業（A-STEP）【FS】探索タイプ
JST Adaptable and seamless technology transfer program through target-driven
R&D「α-γ弁別可能な新規シンチレータLiCAFの高品質化・大口径化技術の開発」“Development of high quality large LiCAF for α-γ discrimination”
プロジェクト代表者：吉川 彰
Project Leader: A. Yoshikawa
1,300,000 yen/1year, 2010.9-2011.3「再処理施設汚染モニタ用新薄膜シンチレータの開発」“Development of thin film scintillator foe processing facilities”
プロジェクト代表者：柳田 健之 Project Leader: T. Yanagida
1,300,000 yen/1year, 2010.9-2011.3「形状制御Pr:LuAGシンチレータ単結晶育成技術の開発」“Development of growth technique on shape-controlled Pr:LuAG scintillator single
crystal”
プロジェクト代表者：横田 有為 Project Leader: Y. Yokota
1,690,000 yen/1year, 2010.9-2011.3
2. JST産学イノベーション加速事業【先端計測分析技術・機器開発】
要素技術開発“Development of Systems and Technology for Advanced Measurement andAnalysis Technology”“Development Program for Advanced Measurement and Analysis (Program-T)”「熱-熱外中性子用高効率シンチレータ検出器の開発」“Development of highly efficient scintillator for thermal-epithermal neutrons”
プロジェクト副代表者：柳田 健之 Project Sub Leader: T. Yanagida
Total: 52,000,000 yen/3years, 2010.9-2014.3( 26,000,000 yen for our team)43

【NEDO プロジェクト】
New Energy Development Organization【文部省科学研究費補助金】
Ministry of Education, Culture, Sports, Science and Technology

1.

1.

大学発事業創出実用化研究開発事業
Grant for Feasibility Study of University Projects under the Matching Fund Method「真空紫外域で発光する新機能シンチレータ結晶材料の開発」“Development of New Scintillator Materials with VUV Emission”「MRI-PET 用 Pr：LuAG＋APD アレー放射線検出器システムの開発」”Development of radiation detector with Pr：LuAG＋APD array for MRI-PET”
プロジェクト代表者：吉川 彰
Project Leader: A. Yoshikawa
メンバー：柳田 健之、横田 有為、荻野 拓、鎌田圭
Member: T. Yanagida, Y. Yokota, H. Ogino, K. Kamada
Total: 240,000,000 yen/3years, 2008.4 ~ 2011.3( 13,830,000 yen for our team in 2010FY)【厚生省科学研究費補助金】
Ministry of Health, Labour and Welfare1.

若手研究（A）Grants-in-Aid for young scientists (A)研究代表者: 吉川 彰
Project Leader: A. Yoshikawa
5,000,000 yen/year, 2007 .4 ~ 2011.3
2.

若手研究（B）Grants-in-Aid for young scientists (B)「Si-APD 用透明セラミックス Ce:LuAG シンチレータの開発」”Development of Ce:LuAG Transparent Ceramics Scintillator for Si-APD.”研究代表者: 柳田 健之
Project Leader: T. Yanagida
2,340,000 yen/year, 2009.4-2011.3

医療機器研究開発推進事業
Research Enterprise of Development Promotion for Medical Equipment「高速セルイメージングを可能にする次世代 X 線 CT 用ハロゲン化物シンチレータの開発」”Development of halide scintillator for next generation X-ray CT to enable highspeed cell imaging.”
研究代表者：吉川 彰
Project Leader: A. Yoshikawa
メンバー：柳田 健之、横田 有為 Member: T. Yanagida, Y. Yokota
Total: 200,000,000 yen/3years, 2008.4 ~ 2011.3( 47,500,000 yen for our team in 2010FY)

44

45

【企業・財団・個人からの受託・共同研究，寄付金】
Funds from industry, Foundations, donation
1.
2.

株式会社トクヤマ
古河機械金属株式会社

List of patents

Tokuyama Corporation
Furukawa Co. Ltd.

3.

TDK 株式会社

TDK Corporation4.

日本結晶光学株式会社

Nihon Kessho Kogaku Co.Ltd

5.

三菱ガス化学株式会社

Mitsubishi Gas Chemical Co.Ltd

6.

キヤノン株式会社

Canon Inc.

7.

田中貴金属工業

Tanaka Kikinzoku Kogyo

8.

ステラケミファ株式会社

Stella Chemifa Co. Ltd

9.

株式会社村田製作所

Murata Manufacturing Co. Ltd

10. 神島化学工業株式会社

平成 22 年度申請特許

Konoshima Chemical Co. Ltd

1. フッ化物結晶、放射線検出用シンチレータ及び放射線検出器
吉川 彰、柳田 健之、横田 有為、福田 健太郎、河口 範明、
須山 敏尚(Akira Yoshikawa, Takayuki Yanagida, Yuui Yokota, Kentaro Fukuda, Noriaki
Kawaguchi, Toshihisa Suyama)
2. フッ化物単結晶、シンチレーター及びフッ化物単結晶の製造方法
吉川 彰、柳田 健之、横田 有為、福田 健太郎、河口 範明、
石津 澄人(Akira Yoshikawa, Takayuki Yanagida, Yuui Yokota, Kentaro Fukuda, Noriaki
Kawaguchi,
Sumito Ishizu)
3. フッ化物単結晶、真空紫外発光素子及びシンチレーター
吉川 彰、柳田 健之、横田石津 澄人、河口 範明

有為、ヤンペジャール、福田健太郎、(Akira Yoshikawa, Takayuki Yanagida, Yuui Yokota, Jan Pejchal, Kentaro Fukuda,
Sumito Ishizu , Noriaki Kawaguchi)
4. 放射線検出器及びシンチレーター

11. 谷川熱技術振興基金

Tanikawa Fund Promotion of Thermal Technology

吉川 彰、柳田 健之、福田 健太郎、河口 範明(Akira Yoshikawa, Takayuki Yanagida, Kentaro Fukuda, Noriaki Kawaguchi)
他 ３５ 件46(

合計 ３９ 件 )47

List of Presentations

48

49

A. International conference and symposia
国際学会
1.

2.

Takayuki Yanagida, Noriaki Kawaguchi, Yutaka Fujimoto, Yuui Yokota, Miyuki Miyamoto,
Hideyuki Sekiwa, Jun Kobayashi, Taichi Tokutake, Akira Yoshikawa"Performance Test of ZnO Based alpha-ray imager."
The 6th International Workshop on Indivisual Monitoring of Ionizing Radiation, 2010.11.29-12.1,
Oarai, Japan (Invited)(2010)

3.

Y. Furuya, N. Abe, H. Tanaka, K. Fukuda, S. Ishizu, N. Kawaguchi, Y. Fujimoto, Y. Yokota, T.
Yanagida, H. Kubo, T. Tanimori, H. Sekiya, M. Nikl, A. Yoshikawa"Development of new efficient VUV Scintillators."
The 6th International Workshop on Indivisual Monitoring of Ionizing Radiation, 2010.11.29-12.1,
Oarai, Japan (Invited)(2010)

4.

Akira Yoshikawa, Takayuki Yanagida, Yuui Yokota, Kei Kamada, Yoshiyuki Usuki, Seiichi
Yamamoto, Masayasu Miyake, Kazuaki Kumagai, Katsuhisa Sasaki, Mamoru Baba, Masatoshi Ito"Positron Emission Mammography using Pr:LuAG single crystalline scintillator ."The 6th International Workshop on Indivisual Monitoring of Ionizing Radiation, 2010.11.29-12.1,
Oarai, Japan (Invited)(2010)

5.

Y. Fujimoto, Y. Yokota, T. Yanagida, J. Pejchal,Yuki Furuya,M. Sugiyama, N. Kawaguti, K.
Fukuda, D. Totsuka, M. Nikl, A. Yoshikawa"Development of new scintillaors for thermal neutron detection."
The 6th International Workshop on Indivisual Monitoring of Ionizing Radiation, 2010.11.29-12.1,
Oarai, Japan (Invited)(2010)

6.

7.

8.

50

Yuki Furuya, Takayuki Yanagida, Yutaka Fujimoto, Yuui Yokota, Kei Kamada, Noriaki
Kawaguchi, Sumito Ishizu, Koro Uchiyama, Kuniyoshi Mori, Ken Kitano, Martin Nikl, Akira
Yoshikawa"Time and Wavelength-resolved Luminescence Evaluation of Several Types of Scintillators using
Streak Camera System Equipped with Pulsed X-ray Source."
29th International Congress on High-Speed Imaging and Photonics (ICHSIP-29), 9/20-24,
Morioka, Japan (2010)

M. Sugiyama, Y. Yokota, T. Yanagida, A. Ito, L. An, Y. Fujimoto, Y. Furuya, T. Goto, A.
Yoshikawa"Optical and scintillation properties of garnet transparent ceramics."
The 6th International Workshop on Indivisual Monitoring of Ionizing Radiation, 2010.11.29-12.1,
Oarai, Japan (Invited)(2010)
M. Sugiyama, Y. Fujimoto, T. Yanagida, D. Totsuka, Y. Furuya, Y. Yokota, A. Yoshikawa"Scintillation properties of rare-earth doped Lu3Al5O12 single crystals."
The 6th International Workshop on Indivisual Monitoring of Ionizing Radiation, 2010.11.29-12.1,
Oarai, Japan (Invited)(2010)
T. Yanagida, Y. Fujimoto, Y. Yokota, K. Kamada, A. Yoshikawa, H. Yagi, T. Yanagitani"Scintillation Properties Of Transparent Ceramic Ce Doped LuAG With Different Ce
Concentrations."
16th International Conference on Solid State Dosimetry, 9/19-24, Sydney, Australia (2010)

9.

T. Yanagida, N. Kawaguchi, Y. Fujimoto, Y. Yokota, A. Yamazaki, K. Watanabe, K. Kamada, A.
Yoshikawa"Study of Ce and Eu doped LiSrAlF6 scintillators for neutron detectors."
16th International Conference on Solid State Dosimetry, 9/19-24, Sydney, Australia (2010)

10. Y. Miyamoto, H. Nanto, Y. Takei, T. Yamamoto, T. Kurobori, A. Konnai, T. Yanagida, A.
Yoshikawa, Y. Shimotsuma, K. Miura, K. Hirao"Radiophotoluminescence From Silver-Doped Phosphate Glass."
16th International Conference on Solid State Dosimetry, 9/19-24, Sydney, Australia (2010)
11. Y. Fujimoto, Y. Yokota, T. Yanagida, J. Pejchal, N. Kawaguti, K. Fukuda, D. Totsuka, M. Nikl, A.
Yoshikawa"Scintillation Characteristics Of Tm3+ In Ca3(BO3)2 Crystals."
16th International Conference on Solid State Dosimetry, 9/19-24, Sydney, Australia (2010)
12. Y. Yokota, M. Sato, V. Chani, K. Tota, K. Onodera, T. Yanagida, A. Yoshikawa"Growth and Characterization of Shape-Controlled Single Crystals by a Micro-pulling-down
Method."Materials Research Society 2010 Fall Meeting, Boston, MA [USA] (November 30, 2010)
13. Y. Yokota, M. Sato, V. Chani, K. Tota, K. Onodera, A. Yamaji, T. Yanagida, A. Yoshikawa"Growth and physical properties of shape-controlled Ca3NbGa3Si2O14 single crystal by micropulling-down method"
The 3rd International Symposium on Innovations in Advanced Materials for Optics & Electronics(ISIAMOE-3), Toyama, Japan (October 19, 2010)
14. Akira Yoshikawa, Takayuki Yanagida, Yuui Yokota, Yutaka Fujimoto, Noriaki Kawaguchi,
Kentaro Fukuda, Sumito Ishizu, Toshihisa Suyama, Kenichi Watanabe, Atsushi Yamazaki, Martin
Nikl"Development of Ce, Eu doped -LiCaAlF6 crystal for neutron scintillator"
7th European-Israeli Workshop on “Materials for and by Optics” , 2010.12.8-12.9, UCBLyon1's
Library (Villeurbanne), France (2010)
15. Yutaka Fujimoto, Takayuki Yanagida, Yuui Yokota, Noriaki Kawaguchi, Kentaro Fukuda,
Daisuke Totsuka, Kenichi Watanabe, Atsushi Yamazaki, Akira Yoshikawa"Growth and Characterization of Strontium Metaborate Scintillators"
7th European-Israeli Workshop on “Materials for and by Optics” , 2010.12.8-12.9, UCBLyon1's
Library (Villeurbanne), France (2010)
16. Makoto Sugiyama Yutaka Fujimoto Takayuki Yanagida Daisuke Totsuka Yuui Yokota Akira
Yoshikawa"Scintillation properties of Tm-doped Lu3Al5O12 single crystals"
7th European-Israeli Workshop on “Materials for and by Optics” , 2010.12.8-12.9, UCBLyon1's
Library (Villeurbanne), France (2010)
17. Akira Yoshikawa, Yuui Yokota, Yutaka Fujimoto, Takayuki Yanagida, Daisuke Totsuka, Valery I
Chani"Single crystal growth of hygroscopic halide materials using the micro-pulling-down method witha removable chamber system"
7th European-Israeli Workshop on “Materials for and by Optics” , 2010.12.8-12.9, UCBLyon1's
Library (Villeurbanne), France (2010)51

18. Akihiro Fukabori, Jan Pejchal, Takayasu Ikegami, Akira Yoshikawa"Fundamental optical constants of Nd doped Y2O3 ceramics"
7th European-Israeli Workshop on “Materials for and by Optics” , 2010.12.8-12.9, UCBLyon1's
Library (Villeurbanne), France (2010)
19. Yutaka Fujimoto, Takayuki Yanagida, Yuui Yokota, Akio Ikesue, Akira Yoshikawa"Evaluation of Characterization of Rare-earth doped Sesquioxide Ceramic Scintillators"
7th European-Israeli Workshop on “Materials for and by Optics” , 2010.12.8-12.9, UCBLyon1's
Library (Villeurbanne), France (2010)
20. Takayuki Yanagida, Yutaka Fujimoto, Yuui Yokota, Kei Kamada, Akira Yoshikawa, Akio Ikesue"Scintillation properties of transparent ceramic Ce:LuAG with different Ce concentrations"
7th European-Israeli Workshop on “Materials for and by Optics” , 2010.12.8-12.9, UCBLyon1's
Library (Villeurbanne), France (2010)
21. Takayuki Yanagida, Yutaka Fujimoto, Yuui Yokota, Akira Yoshikawa,Satoshi kuretake, Yuji
Kintaka, Nobuhiko Tanaka, and Keisuke Kageyama"Evaluations of pure and ytterbium doped transparent ceramic complex perovskite scintillators"
7th European-Israeli Workshop on “Materials for and by Optics” , 2010.12.8-12.9, UCBLyon1's
Library (Villeurbanne), France (2010)
22. T. Murata, S. Fujino, H. Yoshida, Y. Arikawa, T. Nakazato, T. Shimizu, N. Sarukura, M. Nakai, T.
Norimatsu, H. Azechi, K. Kamada, Y. Usuki, T. Suyama, A. Yoshikawa, N. Sato, H. Kan" Optical Properties and Structure of Pr3+-Doped LiF-Al(PO3)3 Glasses as Scattered Neutron
Scintillator for Nuclear Fusion Diagnostics"
3rd International Congress on Ceramics (ICC3) , 2010.11.14-11.18, Osaka International
Convention Center (Osaka), Japan (2010)

29. N. Kawaguchi, K. Fukuda, T. Yanagida, Y. Fujimoto, Y. Yokota, K. Watanabe, A. Yamazaki, T.
Suyama, A. Yoshikawa" Neutron Response of Rare-Earth-Doped 6LiF/CaF2 Eutectic Composites with the Ordered
Lamellar Structure"
IEEE NSS MIC 2010, 2010.10.30-11.6, Tennessee, USA (2010)
30. K. Watanabe, A. Yamazaki, A. Uritani, T. Iguchi, N. Kawaguchi, T. Yanagida, Y. Fujimoto, Y.
Yokota, K. Kamada, K. Fukuda, T. Suyama, A. Yoshikawa" Gamma-ray Suppression in a Ce:LiCaAlF6 Neutron Scintillator Using Pulse ShapeDiscrimination Technique"IEEE NSS MIC 2010, 2010.10.30-11.6, Tennessee, USA (2010)
31. A. Yoshikawa,, V. I. Chani, T. Yanagida, Y. Yokota, G. Boulon" Dopant Segregation in Transparent Optical Ceramics"
IEEE NSS MIC 2010, 2010.10.30-11.6, Tennessee, USA (2010)
32. Y. Furuya, H. Tanaka, Y. Fujimoto, N. Kawaguchi,, Y. Yokota, T. Yanagida, A. Yamazaki, K.
Watanabe, A. Yoshikawa" Crystal Growth and Scintillation Properties of Ce Doped Lithium Potassium Yttrium Complex
Fluoride"IEEE NSS MIC 2010, 2010.10.30-11.6, Tennessee, USA (2010)23. Valery CHANI, Akihiro FUKABORI, Jan PEJCHAL, Yuui YOKOTA, Takayuki YANAGIDA,
and Akira YOSHIKAWA" Segregation in Micro-Pulling-Down Crystal Growth""2010 International Symposium on Crystal Growth" (the 20th ceremony of Korean Association of
Crystal Growth) , 2010.11.7-11.11, Hanyang University (Seoul) and Sungkyunkwan University(Suwon), Korea (2010)(Invited Lecture)

33. Y. Yokota, T. Yanagida, N. Kawaguchi, K. Fukuda, A. Yoshikawa, M. Nikl
" Effects of Charge Compensation by Na+ Co-Doping for Ce3+ Doped LiCaAlF6 Single Crystals"
IEEE NSS MIC 2010, 2010.10.30-11.6, Tennessee, USA (2010)

24. N. Kawaguchi, K. Fukuda, T. Yanagida, Y. Fujimoto, Y. Yokota, K. Watanabe, A. Yamazaki, T.
Suyama, A. Yoshikawa" Neutron Response of Rare-Earth-Doped 6LiF/CaF2 Eutectic Composites with the Ordered
Lamellar Structure"
IEEE NSS MIC 2010, 2010.10.30-11.6, Tennessee, USA (2010)

35. M. Sugiyama, Y. Fujimoto, T. Yanagida, Y. Yokota, A. Yoshikawa" Crystal Growth and Scintillation Properties of Nd-Doped Lu3Al5O12 Single Crystals"
IEEE NSS MIC 2010, 2010.10.30-11.6, Tennessee, USA (2010)

25. Y. Yokota, N. Kawaguchi, K. Fukuda, D. Totsuka, T. Yanagida, A. Yoshikawa" Optical and Scintillation Properties of CeCl3 and Ce Doped LaBr3 Single Crystals Grown by
Modified Micro-Pulling-down Method"
IEEE NSS MIC 2010, 2010.10.30-11.6, Tennessee, USA (2010)
26. T. Yanagida, Y. Fujimoto, Y. Yokota, A. Yoshikawa, T. Ishikawa, H. Fujimura, H. Shimizu, H.
Yagi, T. Yanagitani" Scintillation Properties of LuAG (Ce) Ceramic and Single Crystalline Scintillator"
IEEE NSS MIC 2010, 2010.10.30-11.6, Tennessee, USA (2010)
27. D. Totsuka, T. Yanagida, Y. Fujimoto, Y. Yokota, A. Yoshikawa" Study on Scintillation Properties of Rare Earth (Pr, Nd, and Tm) Activated Lu2SiO5"IEEE NSS MIC 2010, 2010.10.30-11.6, Tennessee, USA (2010)52

28. N. Kawaguchi, K. Fukuda, T. Yanagida, Y. Fujimoto, Y. Yokota, K. Watanabe, A. Yamazaki, T.
Suyama, A. Yoshikawa" Thermal Neutron Imaging Tests with Rare-Earth-Ion-Doped LiCaAlF6 and Sealed 252Cf
Source"IEEE NSS MIC 2010, 2010.10.30-11.6, Tennessee, USA (2010)

34. H. Tanaka, Y. Furuya, Y. Yokota, T. Yanagida, A. Yoshikawa, Y. Kawazoe" Crystal Growth and Scintillation Properties of Ce Doped KLu2F7 Single Crystal"IEEE NSS MIC 2010, 2010.10.30-11.6, Tennessee, USA (2010)

36. Y. Fujimto, T. Yanagida, Y. Yokota, V. V. Kochurikhin, A. Yoshikawa" Optical and Scintillation Properties of Lutetium Vanadate single crystal"IEEE NSS MIC 2010, 2010.10.30-11.6, Tennessee, USA (2010)
37. Y. Fujimto, T. Yanagida, Y. Yokota, N. Kawaguti, K. Fukuda, D. Totsuka, K. Watanabe, A.
Yamazaki, A. Yoshikawa" Scintillation Properties of Ce3+-doped, Pr3+-doped Calcium Orthoborate"
IEEE NSS MIC 2010, 2010.10.30-11.6, Tennessee, USA (2010)
38. T. Yanagida, N. Kawaguchi, Y. Fujimoto, Y. Yokota, M. Miyamoto, H. Sekiwa, J. Kobayashi, T.
Tokutake, A. Yoshikawa" Evaluations of ZnO Based Alpha-Ray Imager"
IEEE NSS MIC 2010, 2010.10.30-11.6, Tennessee, USA (2010)53

39. T. Yanagida, Y. Fujimoto, Y. Yokota, N. Kawaguchi, K. Kamada, J. Pejchal,, V. Chani, K.
Fukuda, D. Totsuka, K. Uchiyama, K. Mori, K. Kitano, M. Nikl, A. Yoshikawa" Development of Pulsed X-Ray Tube Equipped Streak Camera System to Study Scintillation
Phenomenon"
IEEE NSS MIC 2010, 2010.10.30-11.6, Tennessee, USA (2010)
40. T. Yanagida, N. Kawaguchi, Y. Fujimoto, Y. Yokota, A. Yamazaki, K. Watanabe, K. Kamada, A.
Yoshikawa" Evaluations of Scintillation Properties of LiSrAlF6 Scintillator for Thermal Neutron Detection"
IEEE NSS MIC 2010, 2010.10.30-11.6, Tennessee, USA (2010)
41. A. Yamaji, T. Yanagida, Y. Yokota, Y. Fujimoto, M. Sugiyama, A. Yoshikawa" Comparative Study on Scintillation Properties of LuGG, YGG and GGG"IEEE NSS MIC 2010, 2010.10.30-11.6, Tennessee, USA (2010)
42. V. Chani, G. Boulon, W. Zhao, T. Yanagida, A. Yoshikawa"Similarity of Rare Earth Dopant Segregation in Oxide Melt Crystal Growth and Optical Ceramic
Processing "The 16th International Conference on Crystal Growth(ICCG-16), 8/8-13, Beijing, China (2010)
43. A. Fukabori, K. Kamada, K. Aoki, T. Yanagida, V. Chani, Y. Yuui, M. Shuji, M. Nikl, A.
Yoshikawa"Optical and scintillation properties of Sr7%:Ce15%:GdF3 single crystal"
The 16th International Conference on Crystal Growth(ICCG-16), 8/8-13, Beijing, China (2010)
44. Y. Yokota, V. Chani, M. Sato, K. Tota, K. Onodera, T. Yanagida, S. Maeo, A. Yoshikawa"Growth and crystallinity of shaped and multiple sapphire crystals by a micro-pulling-down
method"The 16th International Conference on Crystal Growth(ICCG-16), 8/8-13, Beijing, China (2010)
45. Y. Yokota, A. Yoshikawa, N. Kawaguchi, K. Fukuda, D. Totsuka, T. Yanagida, S. Maeo, M. Nikl
"Development of modified micro-pulling-down method for bromide and chloride single crystals"
The 16th International Conference on Crystal Growth(ICCG-16), 8/8-13, Beijing, China (2010)
46. Y. Furuya, H. Tanaka, K. Fukuda, N. Kawaguchi, Y. Yokota, T. Yanagida, M. Nikl, A.
Yoshikawa"Crystal growth, dependence of Nd segregation on Na concentration and luminescence properties
of Nd doped (Na0.425-xLu0.575+x)F2.15+2x single crystal"
The 16th International Conference on Crystal Growth(ICCG-16), 8/8-13, Beijing, China (2010)
47. Y. Furuya, H. Tanaka, K. Fukuda, N. Kawaguchi, Y. Yokota, T. Yanagida, M. Nikl, A.
Yoshikawa"Growth and luminescence properties of Nd doped (Na0.5-xLu0.5+x)F2+2x single crystal"
The 16th International Conference on Crystal Growth(ICCG-16), 8/8-13, Beijing, China (2010)
48. Y. Furuya, H. Tanaka, K. Fukuda, N. Kawaguchi, Y. Yokota, T. Yanagida, M. Nikl, A.
Yoshikawa"Growth and luminescence properties of Eu doped (Na0.425-xLu0.575+x)F2.15+2x single
crystal"The 16th International Conference on Crystal Growth(ICCG-16), 8/8-13, Beijing, China (2010)

69. Yutaka Fujimoto, Yuui Yokota, Takayuki Yanagida, Jan Pejchal, Noriaki Kawaguti, Kentaro
Fukuda, Martin Nikl, Akira Yoshikawa"Development of Ce3+ activated Calcium Orthoborate single crystalline scintillators for thermal
neutron detection"
12th Symposium on Radiation Measurements and Applications, 5/24-30, Michigan University(2010)
70. Joanna Iwanowska, Lukasz Swiderski, Marek Moszynski, Takayuki Yanagida, Yuui Yokota,
Akira Yoshikawa, Kentaro Fukuda, Noriaki Kawaguchi, Sumito Ishizu"Thermal neutron detection properties of Cerium doped LiCaAlF6 single crystals"
12th Symposium on Radiation Measurements and Applications, 5/24-30, Michigan University(2010)
71. Noriaki Kawaguchi, Kentaro Fukuda, Takayuki Yanagida, Yutaka Fujimoto, Yuui Yokota,
Toshihisa Suyama, Kenichi Watanabe, Akira Yoshikawa"Fabrication and characterization of large size 6LiF/CaF2:Eu eutectic composites with the orderedlamellar structure"
12th Symposium on Radiation Measurements and Applications, 5/24-30, Michigan University(2010)
72. Atsushi Yamazaki, Kenichi Watanabe, Akira Uritani, Tetsuo Iguchi, Noriaki Kawaguchi,
Takayuki Yanagida, Yutaka Fujimoto, Yuui Yokota, Kei Kamada, Kentaro Fukuda, Toshihisa
Suyama, Akira Yoshikawa"Neutron-gamma Discrimination Based on Pulse Shape Discrimination in a Ce:LiCaAlF6
scintillator"
12th Symposium on Radiation Measurements and Applications, 5/24-30, Michigan University(2010)
73. Yutaka Fujimoto, Yuui Yokota, Takayuki Yanagida, Jan Pejchal, Noriaki Kawaguti, Kentaro
Fukuda, Daisuke Totsuka, Martin Nikl, Akira Yoshikawa"Scintillation and optical properties of Pb-doped YCa4O(BO3)3 crystals"
12th Symposium on Radiation Measurements and Applications, 5/24-30, Michigan University(2010)
74. Noriaki Kawaguchi, Takayuki Yanagida, Yutaka Fujimoto, Yuui Yokota, Kei Kamada, Kentaro
Fukuda, Toshihisa Suyama, Kenichi Watanabe, Atsushi Yamazaki, Akira Yoshikawa"Thermal neutron imaging with rare-earth-ion-doped LiCaAlF6 scintillators and a sealed 252Cf
source"12th Symposium on Radiation Measurements and Applications, 5/24-30, Michigan University(2010)
75. Noriaki Kawaguchi, Takayuki Yanagida, Yutaka Fujimoto, Yuui Yokota, Kei Kamada, Kentaro
Fukuda, Toshihisa Suyama, Kenichi Watanabe, Atsushi Yamazaki, Akira Yoshikawa"Thermal neutron imaging with rare-earth-ion-doped LiCaAlF6 scintillators and a sealed 252Cf
source"12th Symposium on Radiation Measurements and Applications, 5/24-30, Michigan University(2010)

49. H. Tanaka, Y. Furuya, M. Sugiyama, T. Yanagida, Y. Yokota, A. Yoshikawa"Growth of high temperature phase KLu2F7 single crystal by using quenching method"
The 16th International Conference on Crystal Growth(ICCG-16), 8/8-13, Beijing, China (2010)54

55

B. Domestic Conferences
国内学会
1.

11. 河口範明，柳田健之，藤本裕，渡辺賢一，山崎淳，福田健太郎，須山敏尚，横田有為，吉川彰"Eu 添加 LiSrAlF6 シンチレーターの中性子応答特性"
第 71 回応用物理学会学術講演会, 9/14-17, 長崎, 長崎大学(2010)
12. 渡辺賢一，山崎淳，瓜谷章，柳田健之，河口範明，藤本裕，横田有為，鎌田圭，福田健太郎，
須山敏久，吉川彰"Ce:LiCaALF6 シンチレータにおける中性子－ガンマ線波形弁別法"
第 71 回応用物理学会学術講演会, 9/14-17, 長崎, 長崎大学(2010)2.

坂野大翔，渡辺賢一，山崎淳，瓜谷章, 田中秀彦，柳田 健之，横田有為，吉川彰"形状制御シンチレータを用いた機能性コリメータ型ガンマカメラの開発"
日本原子力学会中部支部 第 42 回研究発表会 2010 年 12 月 14-15 日 @名古屋大学 (2010)3.

丸山秀典，渡辺賢一，山﨑淳，瓜谷章、河口範明、福田健太郎、柳田 健之、吉川彰"指向性を有する小型中性子検出器による原子炉内中性子束方向分布計測法の開発"
日本原子力学会中部支部 第 42 回研究発表会 2010 年 12 月 14-15 日 @名古屋大学 (2010)

13. 宮本由香，小林晴紀，竹井義法，南戸秀仁，黒堀利夫，柳田建之，吉川彰，坂倉政明，下間靖彦，三浦清貴，平尾一之，山本幸佳"銀活性リン酸塩ガラスのＲＰＬ発光中心のアニール効果"
第 71 回応用物理学会学術講演会, 9/14-17, 長崎, 長崎大学(2010)4.

近藤良行，山崎淳，渡辺賢一，瓜谷章，井口哲夫、柳田 健之，河口範明，藤本裕，横田有為，
鎌田圭，福田健太郎、須山敏尚、吉川彰"LiCaAlF6 シンチレータにおけるデジタル波形処理を用いた中性子／ガンマ線弁別"
日本原子力学会中部支部 第 42 回研究発表会 2010 年 12 月 14-15 日 @名古屋大学 (2010)

14. 上坂浩司，益川陽平，ザムリ ユソプ，市川洋，種村眞幸，小野晋吾，河口範明，長見知史，石津澄人，福田健太郎，須山敏尚，横田有為，柳田健之，吉川彰"KMgF3 薄膜を用いた電界放出型真空紫外発光素子"
第 71 回応用物理学会学術講演会, 9/14-17, 長崎, 長崎大学(2010)5.

有川安信，山ノ井航平，猿倉信彦，中井光男，乗松孝好，疇地宏，泉信彦，村田貴広，藤野茂，
吉田英樹，鎌田圭，薄善行，須山敏尚，深堀明博，吉川彰，菅博文"GEM/uPIC を用いた真空紫外イメージング検出器Ⅲ"
日本物理学会第 65 回年次大会, 3/20-23, 岡山, 岡山大学(2010)6.

谷上幸次郎、黒澤俊介、窪秀利、谷森達、関谷洋之、柳田健之、横田有為、吉川彰、福田健太郎、石津澄人、河口範明、須山敏尚"高速点火核融合実験用散乱中性子計測器の開発"
日本物理学会第 65 回年次大会, 3/20-23, 岡山, 岡山大学(2010)

15. 田端一善，小野晋吾，市川洋，河口範明，福田健太郎，須山敏尚，横田有為，柳田健之，吉川彰"パルスレーザー堆積法により作製したフッ化物薄膜の光伝導特性評価と真空紫外線センサ応用"
第 71 回応用物理学会学術講演会, 9/14-17, 長崎, 長崎大学(2010)7.

谷上幸次郎、黒澤俊介、窪秀利、谷森達、関谷洋之、柳田健之、横田有為、吉川彰、福田健太郎、石津澄人、河口範明、須山敏尚"GEM/uPIC を用いた真空紫外イメージング検出器Ⅳ"
日本物理学会秋季大会, 9/11-14, 福岡, 九州工業大学(2010)8.

高橋弘充，米谷光生，松岡正之，水野恒史，深沢泰司，金井義和，河合誠之，片岡淳，釜江常好，田島宏康，G. Madejski，高橋忠幸，郡司修一，湯浅孝行，M. Pearce，M. Jackson，M. Kiss，
P. Mallol，C. Marini Bettolo，S. Rydstro¨m，柳田健之，藤本裕，横田有為，吉川彰，河口範明，
石津澄人，福田健太郎，須山敏，渡辺賢一，PoGOLite チーム" PoGOLite 気球実験のパスファインダーフライト（１）：大気中性子モニター"
日本物理学会秋季大会, 9/11-14, 福岡, 九州工業大学(2010)

9.

56

高橋弘充、米谷光生、松岡正之、水野恒史、深沢泰司、柳田 健之、藤本裕、横田有為、吉川彰、
河口範明、石津澄人、福田健太郎、須山敏尚、渡辺賢一"硬 X 線、軟ガンマ線観測のバックグラウンドとなる中性子の検出"
日本天文学会 2010 年秋季年会 2010 年 9 月 22 日（水）?24 日（金）@金沢大学 (2010)

10. 深堀明博，柳田健之，鎌田圭，横田有為，吉川彰"Tm3+添加 Y2O3, Sc2O3, Lu2O3 単結晶育成と光学及びシンチレーション特性"
第 71 回応用物理学会学術講演会, 9/14-17, 長崎, 長崎大学(2010)

吉野将生，片岡淳，中森健之，松田英憲，三浦大陽，石川嘉隆，川端信行，松永祐輔，鎌田圭，
薄善行，吉川彰，柳田健之"純国産 PET 装置実現へ向けた紫外高感度 APD の開発"
日本物理学会秋季大会, 9/11-14, 福岡, 九州工業大学(2010)

16. 古谷優貴，田中秀彦，河口範明，柳田健之，横田有為，杉山和正，吉川彰"Nd 添加 KLiLuF5 単結晶の作製と光学特性評価"
第 71 回応用物理学会学術講演会, 9/14-17, 長崎, 長崎大学(2010)17. 田中秀彦，古谷優貴，河口範明，横田有為，柳田健之，川添良幸，吉川彰"チョクラルスキー法を用いた VUV シンチレータ用 Nd 添加 CaF2 単結晶の作製"
第 71 回応用物理学会学術講演会, 9/14-17, 長崎, 長崎大学(2010)
18. 杉山誠，藤本裕，柳田健之，横田有為，吉川彰"Nd 添加 Lu3Al5O12 単結晶の作製とシンチレーション特性"
第 71 回応用物理学会学術講演会, 9/14-17, 長崎, 長崎大学(2010)
19. 山路晃広，柳田健之，古谷優貴，鎌田圭，吉川彰"Pr: LuAG 単結晶の結晶性とシンチレーション特性の相関に関する研究"
第 71 回応用物理学会学術講演会, 9/14-17, 長崎, 長崎大学(2010)
20. 鎌田圭，柳田健之，藤本裕，深堀明博，薄善行，吉川彰"Ce: (Gd,Y)3Al5O12(GYAG)単結晶の作製とシンチレータ特性評価"
第 71 回応用物理学会学術講演会, 9/14-17, 長崎, 長崎大学(2010)57

21. 横田有為，Valery Chani，佐藤真人，遠田一重，小野寺晃，柳田健之，吉川彰"マイクロ引き下げ法によるサファイア結晶の形状制御およびマルチ単結晶作製"
第 71 回応用物理学会学術講演会, 9/14-17, 長崎, 長崎大学(2010)22. 河口範明，柳田健之，福田健太郎，須山敏尚，鎌田圭，横田有為，渡辺賢一，吉川彰"Ce 添加 LiCaAlF6 2 インチ単結晶の Cz 法による作製および特性評価"
第 57 回応用物理学関係連合講演会, 3/17-20, 神奈川, 東海大学(2010)
23. 前尾修司，柳田健之，横田有為，吉川彰"シリコンドリフト検出器を用いたシンチレーションカウンタのエネルギー分解能向上"
第 57 回応用物理学関係連合講演会, 3/17-20, 神奈川, 東海大学(2010)24. 柳田健之，藤本裕，横田有為，前尾修司，古谷優貴，阿部直人，田中秀彦，深堀明博，Pejchal
Jan，吉川 彰，河口範明，石津澄人，福田健太郎，須山敏尚，内山公朗，森邦芳，北野謙"パルス X 線励起型ストリークカメラシステムの開発及び性能評価"
第 57 回応用物理学関係連合講演会, 3/17-20, 神奈川, 東海大学(2010)
25. 猿倉信彦，河野雅弘，Marilou Raduban，Jacque Gabayno，Minh Pham，山ノ井航平，Elmer
Estacio，中里智治，清水俊彦，須山敏尚，福田健太郎，Ｋｙｏｕｎｇ Ｊｉｎ Ｋｉｍ，吉川彰，斎藤文良，
斎藤文良"サイドポンプされた Ce:LiCAF 結晶による UV フェムト秒パルスレーザーの増幅"
第 57 回応用物理学関係連合講演会, 3/17-20, 神奈川, 東海大学(2010)
26. 鎌田圭，柳田健之，吉川彰，薄善行"Pr:Lu3Al5O12(LuAG)単結晶の実用化開発「講演奨励賞受賞記念講演」"
第 57 回応用物理学関係連合講演会, 3/17-20, 神奈川, 東海大学(invited)(2010)
27. 古谷優貴，田中秀彦，福田健太郎，河口範明，阿部直人，柳田健之，横田有為，杉山和正，吉川彰"蛍石型構造をもつ希土類添加 Na0.4Lu0.6F2.2 単結晶の作製と光学特性評価"
第 57 回応用物理学関係連合講演会, 3/17-20, 神奈川, 東海大学(2010)
28. Valery I. Chani，Georges Boulon，柳田健之，吉川彰"融液成長およびセラミックスにおける添加物の偏析現象: 相関関係"
第 57 回応用物理学関係連合講演会, 3/17-20, 神奈川, 東海大学(2010)29. 藤本裕，横田有為，柳田健之，前尾修司，Jan Pejchal，Martin Nikl，吉川彰"Pr:YCa4O(BO3)3 単結晶の作製とシンチレーション特性"
第 57 回応用物理学関係連合講演会, 3/17-20, 神奈川, 東海大学(2010)30. 藤本裕，横田有為，柳田健之，前尾修司，Jan Pejchal，Martin Nikl，吉川彰"Ce:A3RE(BO3)3(A=Ba/Sr,RE=Y/Gd)結晶の作製と結晶構造解析"
第 57 回応用物理学関係連合講演会, 3/17-20, 神奈川, 東海大学(2010)
31. Jan Pejchal，Federico Moretti，Anna Vedda，Martin Nikl，Takayuki Yanagida，Yuui Yokota，Akira Yoshikawa"Luminescence properties of Ti-doped LiAlO2 scintillator"
第 57 回応用物理学関係連合講演会, 3/17-20, 神奈川, 東海大学(2010)58

32. 横田有為，柳田健之，前尾修司，河口範明，福田健太郎，吉川彰"改良型 μ-PD 法による吸湿性ハロゲン化物単結晶の結晶作製と発光特性評価"
第 57 回応用物理学関係連合講演会, 3/17-20, 神奈川, 東海大学(2010)山路晃広, 柳田健之,
河口範明, 藤本裕, 横田有為, 吉川彰" Ce Eu 添加 LiSrAlF6 単結晶製作及びシンチレーション特性評価"
第 21 回光物性研究会, 12/10-11, 大阪，大阪市立大学(2010)
33. J. Pejchal, K. Fukuda, M.Nikl, Y. Yokota, T. Yanagida, N. Kawaguchi, A. Yoshikawa"Luminescence of modified BaYF:Nd VUV single crystal scintillator"
第 21 回光物性研究会, 12/10-11, 大阪，大阪市立大学(2010)
34. 横田有為, 吉川彰, 柳田健之, 山路晃広, 河口範明, 福田健太郎"改良型マイクロ引き下げ法による CeCl3, Ce:LaBr3 単結晶の結晶育成とその光物性 "第 21 回光物性研究会, 12/10-11, 大阪，大阪市立大学(2010)35. 田中秀彦, 古谷優貴, 杉山誠, 藤本裕, 河口範明, 横田有為, 柳田健之, 吉川彰, 川添良幸
"Nd 添加 CaF2 単結晶の結晶性と VUV 領域におけるシンチレーション特性及び光学特性との相関 "第 21 回光物性研究会, 12/10-11, 大阪，大阪市立大学(2010)
36. 古谷優貴, 田中秀彦, 河口範明, 福田健太郎, 横田有為, 柳田健之, 杉山和正, 吉川 彰
"KLiYF5, KLiLuF5 および Nd 添加 KLiLuF5 の作製と真空紫外領域におけるシンチレーション
特性評価 "
第 21 回光物性研究会, 12/10-11, 大阪，大阪市立大学(2010)37. 深堀明博, 柳田健之, Jan Pejchal, Valery Chani, 前尾修司, 横田有為 吉川彰, 鎌田圭, MorettiFederico, 池上隆康
"Y2O3 単結晶とセラミックの光学及びシンチレーション特性"
日本セラミックス協会 2010 年年会, 3/22-24, 東京,東京農工大学 (2010)38. 宍戸統悦，工藤邦男，岡田 繁，森 孝雄，野村明子，菅原孝昌，湯葢邦夫，田中雅彦，澤田 豊，
佐原亮二，ビジャイ クマール，林 好一，手嶋勝弥，天野忠昭，古曵重美，吉川 彰，大石修治，
川添良幸"ペロブスカイト型ホウ化物 RRh3B(R = 希土類元素)の硬さ"
第 5 回日本フラックス成長研究発表会, 12/3，長野, 信州大学(2010)
39. 宍戸統悦，工藤邦男，岡田 繁，森 孝雄，野村明子，菅原孝昌，湯葢邦夫，田中雅彦，澤田 豊，
佐原亮二，ビジャイ クマール，林 好一，手嶋勝弥，天野忠昭，古曵重美，吉川 彰，大石修治，
川添良幸"ペロブスカイト型ホウ化物 RRh3B(R = 希土類元素)の熱化学的性質"
第 5 回日本フラックス成長研究発表会, 12/3，長野, 信州大学(2010)
40. 吉川 彰，ペジャール ヤン，ヴァレリ チャニ，横田有為，柳田健"マイクロ引き下げ法を用いた LiAlO2 単結晶の溶液成長"
第 5 回日本フラックス成長研究発表会, 12/3，長野, 信州大学(2010)
41. 吉川 彰，横田有為，柳田健之，福田健太郎，河口範明，石津澄人，須山敏尚"Nd:LuF3 の単結晶成長とその光学特性"
第 5 回日本フラックス成長研究発表会, 12/3，長野, 信州大学(2010)5942. J. Pejchal, M. Nikl, A. Yoshikawa"Study on Photoluminescence delayed recombination decay to evaluate CB-5d1 thermal depth of
Pr3+ center"
International Symposium on Advanced Materials Processing, Part 2, 3/12，宮城, 仙台国際ホテル(2010)
43. Jan Pejchal, Yutaka Fujimto, Valery Chani, Martin Nikl, Takayuki Yanagida, Yuui Yokota, Akira
Yoshikawa"Synthesis and characterization of Ti1-xSnxO2 nanoparticles and its nanotube for the application
to dye-sensitized solar cell"
第 10 回東北大学多元物質科学研究所研究発表会, 12/1，宮城, 東北大学多元物質科学研究所(2010)44. Valery I. CHANI, Akihiro FUKABORI, Yuui YOKOTA, Akira YOSHIKAWA"Growth of Nd-Doped Sc2O3 Crystals by Micro-Pulling-Down Technique"第 10 回東北大学多元物質科学研究所研究発表会, 12/1，宮城, 東北大学多元物質科学研究所(2010)45. V.I. CHANI, G. BOULON, W. ZHAO, T. EPICIER, T. YANAGIDA, A. YOSHIKAWA"Segregation if Melt Crystal Growth and Ceramics Processing"
第 10 回東北大学多元物質科学研究所研究発表会, 12/1，宮城, 東北大学多元物質科学研究所(2010)

List of Publications

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A.Original Papers[1] N. Abe, Y. Yokota, T. Yanagida, N. Kawaguchi, K. Fukuda, J. Pejchal, M. Nikl, A. Yoshikawa,"Crystal Growth and Characterization of Rare Earth Doped K3LuF6,"
Ieee Transactions on Nuclear Science 57 (2010) 1320.
[2] N. Abe, Y. Yokota, T. Yanagida, N. Kawaguchi, J. Pejchal, A. Yoshikawa,"Evaluation of Gamma-Ray Response of Tm:BaF2 Single Crystals,"
Ieee Transactions on Nuclear Science 57 (2010) 1304.
[3] N. Abe, Y. Yokota, Y. Yanagida, N. Kawaguchi, J. Pejchal, M. Nikl, K. Fukuda, A. Yoshikawa,[8] Y. Fujimoto, T. Yanagida, Y. Yokota, N. Kawaguchi, K. Fukuda, D. Totsuka, K. Watanabe, A.
Yamazaki, V. Chani, A. Yoshikawa,"Optical and scintillation properties of Pr3+-doped Ca-3(BO3)(2) single crystals,"
Physica Status Solidi B-Basic Solid State Physics 248 (2011) 444.
[9] Y. Fujimoto, Y. Yokota, T. Yanagida, J. Pejchal, H. Konno, K. Sugiyama, M. Nikl, A. Yoshikawa,"Crystal Growth and Characterization of Sr3Y(BO3)(3),"Ieee Transactions on Nuclear Science 57 (2010) 1264.
[10] A. Fukabori, V. Chani, K. Kamada, T. Yanagida, Y. Yokota, F. Moretti, N. Kawaguchi, A.
Yoshikawa,"Crystal Growth and Scintillation Properties of Tm, Nd Codoped LaF3 Single Crystals,""Growth of Y2O3, Sc2O3 and Lu2O3 crystals by the micro-pulling-down method and their

Ieee Transactions on Nuclear Science 57 (2010) 1278.

optical and scintillation characteristics,"
Journal of Crystal Growth 318 (2011) 823.

[4] Y. Arikawa, K. Yamanoi, T. Nakazato, E.S. Estacio, T. Shimizu, N. Sarukura, M. Nakai, H. Hosoda,
T. Norimatsu, Y. Hironaka, H. Azechi, N. Izumi, T. Murata, S. Fujino, H. Yoshida, K. Kamada,Y. Usuki, T. Suyama, A. Yoshikawa, N. Satoh, H. Kan,

Yoshikawa,"Down-scattered neutron imaging detector for areal density measurement of inertial confinement"Optical and scintillation properties of Sr7%:Ce15%:GdF3 single crystal,"fusion,"Journal of Crystal Growth 318 (2011) 1175.

Review of Scientific Instruments 81 (2010) 10D303.
[5] Y. Arikawa, K. Yamanoi, T. Nakazato, E.S. Estacio, T. Shimizu, N. Sarukura, M. Nakai, T.

[12] A. Fukabori, T. Yanagida, V. Chani, F. Moretti, J. Pejchal, Y. Yokota, N. Kawaguchi, K. Kamada, K.
Watanabe, T. Murata, Y. Arikawa, K. Yamanoi, T. Shimizu, N. Sarukura, M. Nakai, T.

Norimatsu, Y. Hironaka, H. Azechi, T. Murata, S. Fujino, H. Yoshida, K. Kamada, Y. Usuki, T.

Norimatsu, H. Azechi, S. Fujino, H. Yoshida, A. Yoshikawa,

Suyama, A. Yoshikawa, N. Satoh, H. Kan,

"Optical and scintillation properties of Pr-doped Li-glass for neutron detection in inertial"Custom-designed scintillator for laser fusion diagnostics - Pr3+-doped fluoro-phosphate lithium

confinement fusion process,"

glass scintillator,"

Journal of Non-Crystalline Solids 357 (2011) 910.

Optical Materials 32 (2010) 1393.
[6] Y. Fujimoto, T. Yanagida, H. Sekiwa, Y. Yokota, V. Chani, A. Yoshikawa, Japanese Journal of[13] A. Fukabori, T. Yanagida, J. Pejchal, S. Maeo, Y. Yokota, A. Yoshikawa, T. Ikegami, F. Moretti, K.
Kamada,"Scintillation Characteristic of In, Ga-Doped ZnO Thin Films with Different Dopant"Optical and scintillation characteristics of Y2O3 transparent ceramic,"

Concentrations,"

Journal of Applied Physics 107 (2010) 073501.

Applied Physics 50 (2011) 01BG04.
[7] Y. Fujimoto, T. Yanagida, H. Tanaka, Y. Yokota, N. Kawaguti, K. Fukuda, D. Totsuka, K. Watanabe,62[11] A. Fukabori, K. Kamada, T. Yanagida, V. Chani, K. Aoki, Y. Yokota, S. Maeo, M. Nikl, A.

[14] A. Fukabori, Y. Yokota, T. Yanagida, F. Moretti, V. Chani, N. Kawaguchi, K. Kamada, A.
Yoshikawa,

A. Yamazaki, A. Yoshikawa,"Effect of Ce doping on scintillation characteristics of LiYF4 gamma-ray detection,""Growth and characterization of Ce-doped Ca-3(BO3)(2) crystals for neutron scintillator,"

Nuclear Instruments & Methods in Physics Research Section a-Accelerators Spectrometers

Journal of Crystal Growth 318 (2011) 784.

Detectors and Associated Equipment 631 (2011) 68.

63

[15] K. Fukuda, N. Kawaguchi, S. Ishizu, T. Yanagida, T. Suyama, M. Nikl, A. Yoshikawa,[23] E. Mihokova, A. Vedda, M. Fasoli, F. Moretti, A.L. Bulin, M. Nikl, M. Bettinelli, A. Speghini, H.

"Crystal growth and scintillation characteristics of the Nd3+ doped LaF3 single crystal,"

Ogino, A. Yoshikawa,

Optical Materials 32 (2010) 1142.

"Defect states in Lu3GaxAl5-xO12 crystals and powders,"
Optical Materials 32 (2010) 1298.

[16] Y. Furuya, N. Kawaguchi, N. Abe, Y. Yokota, T. Yanagida, M. Nikl, A. Yoshikawa,"Crystal growth and scintillation properties of NdF3 single crystal,"
Optical Materials 32 (2010) 878.

[24] T. Murata, S. Fujino, H. Yoshida, Y. Arikawa, T. Nakazato, T. Shimizu, N. Sarukura, M. Nakai, T.
Norimatsu, H. Azechi, K. Kamada, Y. Usuki, T. Suyama, A. Yoshikawa, N. Sato, H. Kan,
"Custom-Designed Fast-Response Praseodymium-Doped Lithium 6 Fluoro-Oxide Glass[17] Y. Furuya, H. Tanaka, K. Fukuda, N. Kawaguchi, Y. Yokota, T. Yanagida, V. Chani, M. Nikl, A.

Scintillator With Enhanced Cross-Section for Scattered Neutron Originated From Inertial

Yoshikawa,

Confinement Fusion,""Crystal growth, Nd distribution and luminescence properties ofIeee Transactions on Nuclear Science 57 (2010) 1426.

(Na0.425+xLu0.575-x-yNdy)F2.15-2x single crystals,"
Journal of Crystal Growth 318 (2011) 791.

[25] T. Nakazato, M. Cadatal-Raduban, K. Yamanoi, M. Tsuboi, Y. Furukawa, M. Pham, E. Estacio, T.
Shimizu, N. Sarukura, K. Fukuda, T. Suyama, T. Yanagida, Y. Yokota, A. Yoshikawa, F. Saito,[18] Y. Furuya, H. Tanaka, K. Fukuda, N. Kawaguchi, Y. Yokota, T. Yanagida, V. Chani, A. Yoshikawa,"Growth and luminescence properties of Eu-doped (Na0.425-xLu0.575+x)F2.15+2x single"Nd3+:LaF3 as a Step-Wise Excited Scintillator for Femtosecond Ultraviolet Pulses,"
Ieee Transactions on Nuclear Science 57 (2010) 1208.

crystals,"
Journal of Crystal Growth 318 (2011) 549.

[26] M. Nikl, J.A. Mares, A. Vedda, M. Fasoli, V. Laguta, E. Mihokova, J. Pejchal, M. Zhuravleva, A.
Yoshikawa, K. Nejezchleb,[19] K. Kamada, T. Yanagida, K. Aoki, N. Solovieva, M. Nikl, A. Fukabori, A. Yoshikawa,"Crystal growth and scintillation properties of Ce and single crystals,""Can Pr-Doped YAP Scintillator Perform Better?,"
Ieee Transactions on Nuclear Science 57 (2010) 1168.

Journal of Crystal Growth 313 (2010) 37.
[27] J. Pejchal, Y.U. Fujimoto, V. Chani, F. Moretti, T. Yanagida, M. Nikl, Y. Yokota, A. Beitlerova, A.
[20] K. Kamada, T. Yanagida, M. Nikl, A. Fukabori, A. Yoshikawa, K. Aoki,

Vedda, A. Yoshikawa,"Crystal growth and luminescent properties of Pr-doped K(Y,Lu)(3)F-10 single crystal for"Crystal growth and luminescence properties of Ti-doped LiAlO2 for neutron scintillator,"

scintillator application,"

Journal of Crystal Growth 318 (2011) 828.

Journal of Crystal Growth 312 (2010) 2795.
[28] J. Pejchal, M. Nikl, K. Fukuda, N. Kawaguchi, T. Yanagida, Y. Yokota, A. Yoshikawa, V. Babin,[21] N. Kawaguchi, T. Yanagida, Y. Futami, K. Fukuda, T. Suyama, Y. Yokota, A. Yoshikawa, M. Nikl,"Nd concentration dependence on the optical and scintillation properties of Nd doped BaF2,""Luminescence Mechanism in Doubly Doped LaF3:Er,Nd VUV Scintillator,"
Ieee Transactions on Nuclear Science 57 (2010) 1196.

Optical Materials 32 (2010) 1325.
[29] T. Shimizu, M. Cadatal-Raduban, K. Yamanoi, S. Takatori, M. Kouno, M. Pham, E. Estacio, T.
[22] M. Kouno, J.L. Gabayno, M. Cadatal-Raduban, M. Pham, K. Yamanoi, E. Estacio, W. Garcia, T.

64

Nakazato, N. Sarukura, N. Kawaguchi, K. Fukuda, T. Suyama, T. Yanagida, Y. Yokota, A.

Nakazato, T. Shimizu, N. Sarukura, T. Suyama, K. Fukuda, K.J. Kim, A. Yoshikawa, F. Saito,

Yoshikawa, F. Saito,"Micro-pulling-down-method-grown Ce:LiCAF crystal for side-pumped laser amplifier,""Er:LiCAF as Potential Vacuum Ultraviolet Laser Material at 163 nm,"

Journal of Crystal Growth 318 (2011) 737.

Ieee Transactions on Nuclear Science 57 (2010) 1204.

65

[30] H. Tanaka, Y. Furuya, M. Sugiyama, Y. Fujimoto, V. Chani, Y. Yokota, T. Yanagida, Y. Kawazoe,[37] T. Yanagida, N. Kawaguchi, Y. Fujimoto, M. Sugiyama, Y. Furuya, K. Kamada, Y. Yokota, A.

A. Yoshikawa,

Yoshikawa, V. Chani,"Growth of high-temperature phase KLu2F7 single crystals using quenching process,""Growth and scintillation properties of BaMgF4,"

Journal of Crystal Growth 318 (2011) 916.

Nuclear Instruments & Methods in Physics Research Section a-Accelerators Spectrometers
Detectors and Associated Equipment 621 (2010) 473.

[31] H. Tanaka, N. Kawaguchi, N. Abe, Y. Furuya, Y. Yokota, T. Yanagida, J. Pejchal, M. Nikl, Y.
Kawazoe, A. Yoshikawa,[38] T. Yanagida, N. Kawaguchi, Y. Fujimoto, Y. Yokota, T. Tokutake, M. Miyamoto, H. Sekiwa, J.

"Crystal growth and scintillation properties of Nd:CaF2,"

Kobayashi, V. Chani, A. Yoshikawa,

Optical Materials 33 (2011) 284.

"Development of ZnO Based Charged Particle Monitor for Processing Facility,"
Japanese Journal of Applied Physics 50 (2011) 01BG06.

[32] T. Yanagida, Y. Fujimoto, Y. Ohgi, Y. Yokota, A. Yoshikawa, H. Kagi, K. Sugiyama, K. Kamada,"Development and Evaluations of Apatite Crystal Scintillators,"
Ieee Transactions on Nuclear Science 57 (2010) 1308.

[39] T. Yanagida, N. Kawaguchi, S. Ishizu, Y. Yokota, K. Fukuda, T. Suyama, A. Yoshikawa, H. Sekiya,
H. Kubo, T. Tanimori, V. Chani,"Crystal Growth and Evaluations of Nd:LuLiF4 Scintillators for Different Nd Concentration,"[33] T. Yanagida, Y. Fujimoto, A. Yoshikawa, Y. Yokota, M. Miyamoto, H. Sekiwa, J. Kobayashi, T.

Ieee Transactions on Nuclear Science 57 (2010) 1312.

Tokutake, K. Kamada, S. Maeo,"Scintillation Properties of In Doped ZnO With Different In Concentrations,"
Ieee Transactions on Nuclear Science 57 (2010) 1325.

[40] T. Yanagida, M. Sato, K. Kamada, Y. Fujimoto, Y. Yokota, A. Yoshikawa, V. Chani,"Optical properties and gamma-ray response of Czochralski grown Pr:Lu3Al5O12 scintillating
garnet crystals with different Pr content,"[34] T. Yanagida, K. Kamada, Y. Fujimoto, M. Sugiyama, Y. Furuya, A. Yamaji, Y. Yokota, A.

Optical Materials 33 (2011) 413.

Yoshikawa,"Growth and scintillation properties of Pr doped YAP with different Pr concentrations,"[41] T. Yanagida, A. Yoshikawa, Y. Yokota, K. Kamada, Y. Usuki, S. Yamamoto, M. Miyake, M. Baba,

Nuclear Instruments & Methods in Physics Research Section a-Accelerators Spectrometers

K. Kumagai, K. Sasaki, M. Ito, N. Abe, Y. Fujimoto, S. Maeo, Y. Furuya, H. Tanaka, A.

Detectors and Associated Equipment 623 (2010) 1020.

Fukabori, T.R. dos Santos, M. Takeda, N. Ohuchi,"Development of Pr:LuAG Scintillator Array and Assembly for Positron Emission[35] T. Yanagida, K. Kamada, Y. Fujimoto, Y. Yokota, A. Yoshikawa, H. Yagi, T. Yanagitani,"Scintillation properties of transparent ceramic and single crystalline Nd:YAG scintillators,"

Mammography,"
Ieee Transactions on Nuclear Science 57 (2010) 1492.

Nuclear Instruments & Methods in Physics Research Section a-Accelerators Spectrometers
Detectors and Associated Equipment 631 (2011) 54.

[42] Y. Yokota, V. Chani, M. Sato, K. Tota, K. Onodera, T. Yanagida, A. Yoshikawa,"Growth and crystallinity of shaped and multiple sapphire crystals by a micro-pulling-down[36] T. Yanagida, K. Kamada, Y. Yokota, Y. Fujimoto, S. Maeo, A. Yoshikawa,"Gamma-Ray Responses of Pr:LuYAP and Pr:YAP Scintillators,"

method,"Journal of Crystal Growth 318 (2011) 983.

Ieee Transactions on Nuclear Science 57 (2010) 1316.
[43] Y. Yokota, N. Kawaguchi, K. Fukuda, T. Yanagida, A. Yoshikawa, M. Nikl,"Development of modified micro-pulling-down method for bromide and chloride single
crystals,"
Journal of Crystal Growth 318 (2011) 908.

66

67

[44] Y. Yokota, T. Yanagida, N. Abe, N. Kawaguchi, K. Fukuda, M. Nikl, A. Yoshikawa,"Ce Concentration Dependence of Optical and Scintillation Properties for Ce Doped LiYF4
Single Crystals,"
Ieee Transactions on Nuclear Science 57 (2010) 1241.
[45] A. Yoshikawa, T. Yanagida, K. Kamada, Y. Yokota, J. Pejchal, A. Yamaji, Y. Usuki, S. Yamamoto,
M. Miyake, K. Kumagai, K. Sasaki, T.R. dos Santos, M. Baba, M. Ito, M. Takeda, N. Ohuchi, M.
Nikl,"Positron emission mammography using Pr:LuAG scintillator - Fusion of optical material study

B. Proceedings Papers[1] N. Kawaguchi, K. Fukuda, T. Yanagida, Y. Fujimoto, Y. Yokota, K. Watanabe, A. Yamazaki, T.
Suyama, A. Yoshikawa" Neutron Response of Rare-Earth-Doped 6LiF/CaF2 Eutectic Composites with the Ordered
Lamellar Structure"
IEEE NSS MIC 2010, Conference record (2010)[2] N. Kawaguchi, K. Fukuda, T. Yanagida, Y. Fujimoto, Y. Yokota, K. Watanabe, A. Yamazaki, T.

and systems engineering,"

Suyama, A. Yoshikawa

Optical Materials 32 (2010) 1294.

" Thermal Neutron Imaging Tests with Rare-Earth-Ion-Doped LiCaAlF6 and Sealed 252Cf[46] A. Yoshikawa, T. Yanagida, Y. Yokota, A. Yamaji, Y. Fujimoto, J. Pejchal, V.I. Chani, N.
Kawaguchi, S. Ishizu, K. Fukuda, T. Suyama, M. Nikl,"Crystal growth and VUV luminescence properties of Er3+- and Tm3+ -doped LiCaAlF6 forSource"IEEE NSS MIC 2010, Conference record (2010)[3] N. Kawaguchi, K. Fukuda, T. Yanagida, Y. Fujimoto, Y. Yokota, K. Watanabe, A. Yamazaki, T.

detectors,"

Suyama, A. Yoshikawa

Optical Materials 32 (2010) 845.

" Neutron Response of Rare-Earth-Doped 6LiF/CaF2 Eutectic Composites with the Ordered[47] W. Zhao, S. Anghel, C. Mancini, D. Amans, G. Boulon, T. Epicier, Y. Shi, X.Q. Feng, Y.B. Pan, V.
Chani, A. Yoshikawa,"Ce3+ dopant segregation in Y3Al5O12 optical ceramics,"
Optical Materials 33 (2011) 684.
[48] M. Zhuravleva, K. Yang, M. Spurrier-Koschan, P. Szupryczynski, A. Yoshikawa, C.L. Melcher,"Crystal growth and characterization of LuAG:Ce:Tb scintillator,"
Journal of Crystal Growth 312 (2010) 1244.
[49] L. Zulkifli, M. Akai, A. Yoshikawa, M. Shimojima, H. Ohta, H.R. Guy, N. Uozumi,"The KtrA and KtrE Subunits Are Required for Na+-Dependent K+ Uptake by KtrB across the
Plasma Membrane in Synechocystis sp. Strain PCC 6803,"
Journal of Bacteriology 192 (2010) 5063.

Lamellar Structure"
IEEE NSS MIC 2010, Conference record (2010)[4] Y. Yokota, N. Kawaguchi, K. Fukuda, D. Totsuka, T. Yanagida, A. Yoshikawa" Optical and Scintillation Properties of CeCl3 and Ce Doped LaBr3 Single Crystals Grown by
Modified Micro-Pulling-down Method"
IEEE NSS MIC 2010, Conference record (2010)[5] Y. Yokota, T. Yanagida, N. Kawaguchi, K. Fukuda, A. Yoshikawa, M. Nikl
" Effects of Charge Compensation by Na+ Co-Doping for Ce3+ Doped LiCaAlF6 Single
Crystals"IEEE NSS MIC 2010, Conference record (2010)[6] T. Yanagida, Y. Fujimoto, Y. Yokota, A. Yoshikawa, T. Ishikawa, H. Fujimura, H. Shimizu, H. Yagi,
T. Yanagitani" Scintillation Properties of LuAG (Ce) Ceramic and Single Crystalline Scintillator"
IEEE NSS MIC 2010, Conference record (2010)

68

69

[7] T. Yanagida, N. Kawaguchi, Y. Fujimoto, Y. Yokota, M. Miyamoto, H. Sekiwa, J. Kobayashi, T.

[14] M. Sugiyama, Y. Fujimoto, T. Yanagida, Y. Yokota, A. Yoshikawa

Tokutake, A. Yoshikawa" Crystal Growth and Scintillation Properties of Nd-Doped Lu3Al5O12 Single Crystals"" Evaluations of ZnO Based Alpha-Ray Imager"

IEEE NSS MIC 2010, Conference record (2010)

IEEE NSS MIC 2010, Conference record (2010)[15] Y. Fujimto, T. Yanagida, Y. Yokota, V. V. Kochurikhin, A. Yoshikawa[8] T. Yanagida, Y. Fujimoto, Y. Yokota, N. Kawaguchi, K. Kamada, J. Pejchal,, V. Chani, K. Fukuda, D.
Totsuka, K. Uchiyama, K. Mori, K. Kitano, M. Nikl, A. Yoshikawa" Optical and Scintillation Properties of Lutetium Vanadate single crystal"IEEE NSS MIC 2010, Conference record (2010)" Development of Pulsed X-Ray Tube Equipped Streak Camera System to Study Scintillation
Phenomenon"
IEEE NSS MIC 2010, Conference record (2010)[16] Y. Fujimto, T. Yanagida, Y. Yokota, N. Kawaguti, K. Fukuda, D. Totsuka, K. Watanabe, A.
Yamazaki, A. Yoshikawa" Scintillation Properties of Ce3+-doped, Pr3+-doped Calcium Orthoborate"[9] T. Yanagida, N. Kawaguchi, Y. Fujimoto, Y. Yokota, A. Yamazaki, K. Watanabe, K. Kamada, A.

IEEE NSS MIC 2010, Conference record (2010)

Yoshikawa" Evaluations of Scintillation Properties of LiSrAlF6 Scintillator for Thermal Neutron Detection"
IEEE NSS MIC 2010, Conference record (2010)[17] A. Yamaji, T. Yanagida, Y. Yokota, Y. Fujimoto, M. Sugiyama, A. Yoshikawa" Comparative Study on Scintillation Properties of LuGG, YGG and GGG"IEEE NSS MIC 2010, Conference record (2010)[10] D. Totsuka, T. Yanagida, Y. Fujimoto, Y. Yokota, A. Yoshikawa" Study on Scintillation Properties of Rare Earth (Pr, Nd, and Tm) Activated Lu2SiO5"IEEE NSS MIC 2010, Conference record (2010)[18] Y. Arikawa, T. Murata, S. Fujino, H. Yoshida, K. Yamanoi, T. Nakazato, T. Shimizu, N. Sarukura,
M. Nakai, T. Norimatsu, H. Azechi, K. Kamada,Y. Usuki, T. Suyama, A. Yoshikawa, N. Satohand H. Kan[11] K. Watanabe, A. Yamazaki, A. Uritani, T. Iguchi, N. Kawaguchi, T. Yanagida, Y. Fujimoto, Y.
Yokota, K. Kamada, K. Fukuda, T. Suyama, A. Yoshikawa"A SCATTERED-NEUTRON DETECTOR FOR AREAL DENSITY MEASUREMENT"
Journal of Physics: Conference Series 244 (2010) 032041" Gamma-ray Suppression in a Ce:LiCaAlF6 Neutron Scintillator Using Pulse ShapeDiscrimination Technique"IEEE NSS MIC 2010, Conference record (2010)[19] M. Nikl, A. Vedda, G.P. Pazzi, E. Mihokova, M. Fasoli, J. Pejchal, P. Bohacek, A. Yoshikawa, G.
Ren, K. Nejezchleb"Tunnelling processes-driven radiative recombination in complex oxide scintillators"[12] Y. Furuya, H. Tanaka, Y. Fujimoto, N. Kawaguchi,, Y. Yokota, T. Yanagida, A. Yamazaki, K.

Journal of Physics: Conference Series 249 (2010) 012018

Watanabe, A. Yoshikawa" Crystal Growth and Scintillation Properties of Ce Doped Lithium Potassium Yttrium Complex[20] Y. Yokota, H. Tanaka, M. Sato V. Chani, K. Tota, K. Onodera, T. Yanagida, A. Yoshikawa

Fluoride""Growth and Characterization of Shape-Controlled Single Crystals by a Micro-pulling-downIEEE NSS MIC 2010, Conference record (2010)

Method."Materials Research Society 2010 Fall Meeting, 1309-EE06-29 (2010)[13] H. Tanaka, Y. Furuya, Y. Yokota, T. Yanagida, A. Yoshikawa, Y. Kawazoe" Crystal Growth and Scintillation Properties of Ce Doped KLu2F7 Single Crystal"IEEE NSS MIC 2010, Conference record (2010)70

71

[21] Y. Furuya, T. Yanagida, Y. Fujimoto, Y. Yokota, K. Kamada, N. Kawaguchi, S. Ishizu, K.
Uchiyama, K. Mori, K. Kitano, M. Nikl, A. Yoshikawa"Time and Wavelength-resolved Luminescence Evaluation of Several Types of Scintillators
using Streak Camera System Equipped with Pulsed X-ray Source."
29th International Congress on High-Speed Imaging and Photonics (ICHSIP-29), 9/20-24,
Morioka, Japan (2010)[22] Y. Furuya, H.. Tanaka, N. Kawaguchi, K. Fukuda, Y. Yokota, T. Yanagida, K. Sugiyama, A.
Yoshikawa"Crystal growth and scintillation properties of KLiYF5, KLiLuF5, and Nd doped KLiLuF5
single crystals in VUV wavelength region."
Proceedings of the 21th Symposium of Association for Condensed Matter Photophysics, Japan,
54-57 (2010)[23] T. Yanagida, Y. Yokota, S. Maeo, J. Pejchal, V. Chani, Y. Fujimoto, N. Abe, Y. Furuya, H. Tanaka,
A. Fukabori, A. Yoshikawa"Development and applications of scintillators."
The 5th International Workshop on Individual Monitoring of Ionizing Radiation, p297 (2010)

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Copies of Selected Papers

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JOURNAL OF APPLIED PHYSICS Volume: 107 Issue: 7 Article Number: 073501 Published: APR 1 2010

JOURNAL OF CRYSTAL GROWTH Volume: 312 Issue: 8 Pages: 1244-1248 Published: APR 1 2010

Optical and scintillation characteristics of Y 2 O 3 transparent ceramic

Crystal growth and characterization of LuAG:Ce:Tb scintillator

A Fukabori1; T Yanagida1; J Pejchal1,2; S Maeo1; Y Yokota1; A Yoshikawa1,3; T Ikegami4;

M Zhuravleva1,2; K Yang1; M Spurrier-Koschan1; P Szupryczynski1,3; A. Yoshikawa 2; CL Melcher

F Moretti5; K Kamada6

1. Univ Tennessee, Scintillat Mat Res Ctr, Knoxville, TN 37996 USA

1. Tohoku Univ, IMRAM, Aoba Ku, Sendai, Miyagi 9800812, Japan

2. Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 980, Japan

2. Acad Sci Czech Republic, Inst Phys, Prague 16253 6, Czech Republic

3. Siemens Med Solut Mol Imaging, Knoxville, TN USA

3. Tohoku Univ, NICHe, Aoba Ku, Sendai, Miyagi 9808579, Japan
4. Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan
5. Univ Milano Bicocca, Dipartimento Sci Mat, I-20125 Milan, Italy
6. Furukawa Co Ltd, Mat Res Lab, Tsukuba, Ibaraki 3050856, Japan

Abstract
Various fundamental characteristics of Y 2 O 3 ceramics, such as optical transmittance,
reflectivity, absorption coefficient, refractive index, and dielectric constant, were
investigated. Furthermore, in order to evaluate the possible application of this material
as gamma-ray scintillator, other radiation responses, like the alpha-ray excited emission
spectrum, the gamma-ray excited pulse height spectrum, the light yield, thenonproportionality, the energy resolution, and the gamma-ray excited scintillation decay
curves were obtained. The light yield of Y 2 O 3 ceramics was evaluated in about 1.13
times higher than that of Bi 4 Ge 3 O 12 (BGO) : Ce single crystals and was estimated in
9300 photon/MeV. The nonproportionality measurements showed a good
proportionality. The scintillation decay curve could be fitted by an exponential function
characterized by a fast component of about 34 ns.

Abstract:
To investigate the possibility of Tb3+ -> Ce3+ energy transfer, we grew single crystals of
Lu 3 Al 5 O 12 :Ce codoped with Tb3+ using both the micro-pulling-down method and theconventional Czochralski technique. Compositional and phase homogeneity, growthdefects, and crystallographic properties were studied. Visible non-uniformity of dopants
distribution in the radial direction was observed in the micro-pulling-down grown
crystals. Underlying luminescence processes were evaluated by measuring
luminescence properties under photo-, X- and gamma-rays excitation at room
temperature.
E-mail Address:
mzhuravl@utk.edu
Site Address:
http://www.sciencedirect.com/science/article/pii/S0022024809010227

E-mail Address:
akihirofukabori@yahoo.co.jp
Site Address:
http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5442923&abstractAccess=no&userType=ins
t

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IEEE TRANSACTIONS ON NUCLEAR SCIENCE Volume: 57 Issue: 3 Pages: 1168-1174 Part: Part 2 Published: JUN 2010

IEEE TRANSACTIONS ON NUCLEAR SCIENCE Volume: 57 Issue: 3 Pages: 1196-1199 Part: Part 2 Published: JUN 2010

Can Pr-Doped YAP Scintillator Perform Better?

Luminescence Mechanism in Doubly Doped LaF 3 :Er,Nd VUVScintillator

M Nikl1; JA Mares1; A Vedda2; M Fasoli2; V Laguta1; E Mihokova1,2; J Pejchal1,3; M Zhuravleva3;
A. Yoshikawa 3; K Nejezchleb4
1. Inst Phys AS CR, VVI, Prague 16253, Czech Republic

J. Pejchal 1,2,3; M. Nikl 3; K. Fukuda 4; N. Kawaguchi 4; T. Yanagida 1,2; Y. Yokota 1,2; A. Yoshikawa 1,2;
V. Babin 5

2. Univ Milano Bicocca, Dept Mat Sci, I-20125 Milan, Italy

1. Tohoku Univ, IMRAM, Aoba Ku, Sendai, Miyagi 9808577, Japan

3. Tohoku Univ, IMRAM, Sendai, Miyagi 9808577, Japan

2. Tohoku Univ, NICHe, Aoba Ku, Sendai, Miyagi 9808579, Japan

4. CRYTUR Ltd, Turnov 51119, Czech Republic

3. Inst Phys AS CR, Prague 16253, Czech Republic
4. Tokuyama Corp, Shibuya Ku, Tokyo 1508383, Japan

Abstract:
A numerous set of Pr-doped YAP single crystals was prepared using Czochralski andmicro-pulling down methods. Crystals codoped by bi-, tri- and tetravalent ions wereprepared by the latter method as well. The scintillation performance of all the preparedmaterials was evaluated using radioluminescence, photoelectron yield and scintillation
decay measurements at room temperature. The influence of shallow traps was studied
by means of thermoluminescence in the 10-350 K temperature range. Though the
intrinsic scintillation efficiency of Pr-doped YAP is higher than that of YAP:Ce,enhanced delayed radiative recombination processes are found to be responsible forlower-than-expected photoelectron yield of the former system. The possibilities offurther optimization of Pr-doped YAP scintillator are discussed.
E-mail Address:
nikl@fzu.cz
Site Address:

5. Sincrotrone Trieste SCpA, I-34012 Basovizza Trieste, Italy

Abstract:
Doubly doped LaF 3 :Er, Nd scintillation crystals were grown by modified
micropulling-down method. The Er codoping was chosen to enhance the energy transferfrom the host lattice to the Nd3+ luminescence center via the 5d-levels of Er3+, which
can be enabled by the overlap of Er3+ 5d-4f emission spectrum with the Nd3+ 4f-5d
absorption. However, no relevant energy transfer was found by photo- andradioluminescence spectra measurements. The reasons of no significant positive effectof Er codoping are discussed.
E-mail Address:
pejchal@fzu.cz
Site Address:
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5485144

http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5485127

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IEEE TRANSACTIONS ON NUCLEAR SCIENCE Volume: 57 Issue: 3 Pages: 1204-1207 Part: Part 2 Published: JUN 2010

IEEE TRANSACTIONS ON NUCLEAR SCIENCE Volume: 57 Issue: 3 Pages: 1208-1210 Part: Part 2 Published: JUN 2010

Er:LiCAF as Potential Vacuum Ultraviolet Laser Material at 163 nm

Nd3+:LaF 3 as a Step-Wise Excited Scintillator for Femtosecond
Ultraviolet Pulses

T. Shimizu 1; M. Cadatal-Raduban 1; K. Yamanoi 1; S. Takatori 1; M. Kouno 1; M. Pham 1; E. Estacio 1;
T. Nakazato 1; N. Sarukura 1; N. Kawaguchi 2,3; K. Fukuda 2,3; T. Suyama 2; T. Yanagida 3; Y. Yokota 3;
3

A. Yoshikawa ; F. Saito

3

1. Osaka Univ, Inst Laser Engn, Suita, Osaka, Japan

T. Nakazato 1; M. Cadatal-Raduban 1; K. Yamanoi 1; M. Tsuboi 1; Y. Furukawa 1,2; M. Pham
1

1

1

E. Estacio ; T. Shimizu ; N. Sarukura ; K. Fukuda
4

A. Yoshikawa ; F. Saito

3,4

3

4

1

;

4

; T. Suyama ; T. Yanagida ; Y. Yokota ;4

2. Tokuyama Corp, Shibuya Ku, Tokyo 1508383, Japan

1. Osaka Univ, Inst Laser Engn, Suita, Osaka 5650871, Japan

3. Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan

2. RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan
3. Tokuyama Corp, Tokyo 1508383, Japan

Abstract:
We report the vacuum ultraviolet luminescence characteristics of a micro-pulling down
method grown Er3+ : LiCaAlF 6 . Emission at 163 nm with a lifetime of 1.3-mu s wasobserved with F 2 laser (157-nm) pumping. This is one of the shortest emission
wavelengths reported from a rare-earth doped fluoride at room temperature.
E-mail Address:
shimizu-t@ile.osaka-u.ac.jp
Site Address:
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5485137

4. Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan

Abstract:
Vacuum ultraviolet fluorescence from Czochralski method-grown Nd3+:LaF 3 excited by
290 nm femtosecond pulses from a Ti:sapphire laser is reported. Peak emission at 175
nm with 7 ns lifetime is observed. This decay time would be one of the fastest amongsolid-state, inorganic scintillators. Laser emission in the VUV region may also be
achievable by pumping with existing ultraviolet solid-state lasers.
E-mail Address:
nakazato-t@ile.osaka-u.ac.jp
Site Address:
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5485134

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IEEE TRANSACTIONS ON NUCLEAR SCIENCE Volume: 57 Issue: 3 Pages: 1241-1244 Part: Part 2 Published: JUN 2010

IEEE TRANSACTIONS ON NUCLEAR SCIENCE Volume: 57 Issue: 3 Pages: 1264-1267 Part: Part 2 Published: JUN 2010

Ce Concentration Dependence of Optical and Scintillation Properties
for Ce Doped LiYF 4 Single Crystals

Crystal Growth and Characterization of Sr 3 Y(BO 3 ) 3

Y. Yokota 1; T. Yanagida 1; N. Abe 1; N. Kawaguchi 2; K. Fukuda 2; M. Nikl 3; A. Yoshikawa 1

A. Yoshikawa 1,4

Y. Fujimoto 1; Y. Yokota 1; T. Yanagida 1; J. Pejchal 1,2; H. Konno 3; K. Sugiyama 3; M. Nikl 2;

1. Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan

1. Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan

2. Tokuyama Corp, Tokuyama, Miyagi 9893204, Japan

2. Inst Phys AS CR, Prague 16253 6, Czech Republic

3. Acad Sci Czech Republic, Inst Phys, Prague, Czech Republic

3. Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan
4. Tohoku Univ, NICHe, Sendai, Miyagi 9808579, Japan

Abstract:
We have investigated effects of Ce concentration on optical and scintillation properties
for Ce doped LiYF 4 [Ce:LiYF 4 ] single crystals. Li(Y(1-x)Ce(x))F 4 single crystals withmore than 75% transparency were grown by micro-pulling-down method in the range of
0 <= x <= 0.03 and the crystals with x =0.05, 0.1 had milky parts originated fromremained starting materials. Photoluminescence spectra of all Ce:LiYF 4 crystals
indicated two emission peaks from Ce3+ ion which was substituted for Y3+ ion site.
Light yield and decay time of alpha-ray irradiation for Ce:LiYF 4 crystals were largely
affected by Ce concentration and the largest light yield was observed for the crystal withx = 0.02. In contrast, the decay time systematically became faster with an increase of Ce
concentration.

Abstract:
The growth, optical and luminescence characteristics of Pr-doped Sr 3 Y(BO 3 ) 3(Pr:SrYBO) single crystals are studied. The Pr:SYBO single crystals with dimension ofphi 2.0 x 30 mm 3 were grown by micro-pulling down method with radio frequency
heating system. The emission bands at 280-300 nm and 608 nm correspond to 5d-4ftransition and 4f-4f transition of Pr3+ respectively, and were observed under 250 nm
excitation. Under the alpha-ray excitation only the 4f-4f luminescence of Pr3+ was
observed.
Site Address:
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5485071

E-mail Address:
y-yokota@tagen.to-hoku.ac.jp
Site Address:
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5485071

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IEEE TRANSACTIONS ON NUCLEAR SCIENCE Volume: 57 Issue: 3 Pages: 1278-1281 Part: Part 2 Published: JUN 2010

IEEE TRANSACTIONS ON NUCLEAR SCIENCE Volume: 57 Issue: 3 Pages: 1304-1307 Part: Part 2 Published: JUN 2010

Crystal Growth and Scintillation Properties of Tm, Nd Codoped LaF 3
Single Crystals

Evaluation of Gamma-Ray Response of Tm:BaF 2 Single Crystals

N. Abe 1; Y. Yokota 1; T. Yanagida 1; N. Kawaguchi 1,2; J. Pejchal 1,3; M. Nikl 3; K. Fukuda 1,2;
A. Yoshikawa

1,4

1. Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan

N. Abe 1; Y. Yokota 1; T. Yanagida 1; N. Kawaguchi 1,2; J. Pejchal 1,3; A. Yoshikawa 1
1. Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan
2. Tokuyama Co, Tokyo 1508383, Japan
3. Inst Phys AS CR, Prague 16253, Czech Republic

2. Tokuyama Co, Tokyo 1508383, Japan
3. Inst Phys AS CR, Prague 16253, Czech Republic
4. New Ind Creat Hatchery Ctr NICHe, Sendai, Miyagi 9808579, Japan

Abstract:
Because there is an overlap of the 5d-4f emission transition of Tm3+ and absorption
transition of Nd3+, an energy transfer between Nd3+ and Tm3+ in LaF 3 was supposed toenhance the efficiency of the previously studied Nd:LaF 3 scintillation material. In thisstudy, 0.1% and 1% Tm, Nd, and Tm, Nd codoped LaF 3 single crystals scintillators
were developed using micro-pulling down method (mu-PD), and their optical properties
in the vacuum ultraviolet (VUV) region were evaluated. Tm3+ codopant did not show
positive contribution to VUV emission, but energy transfer between Nd3+ and Tm3+
cannot be excluded, although the photoluminescence spectra point just to a competition
for energy between the two ions. Gamma-ray response was also measured using thepulse-height distribution measurement.

Abstract:
Tm3+ doped BaF 2 single crystal scintillator has been investigated. Undoped, 0.1, 0.5,
and 1% Tm -doped BaF 2 are compared in terms of their decay time, light yield,
non-proportionality and energy resolution. The fast component of Tm doped BaF 2 ischaracterized by a 5 similar to 6 decay time and it can be related to the Tm3+ 5d - 4f
VUV emission from 4f(n-1) 5d low-spin state (parity allowed and spin allowedtransition). The light yield of Tm doped BaF 2 is lower with respect to the undoped BaF 2
and systematically decreases with increasing Tm concentration. However, 0.1%
Tm:BaF 2 showed a better non-proportionality and energy resolution than the undoped
sample.
Site Address:
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5485122

E-mail Address:
naotoabe@mail.tagen.tohoku.ac.jp
Site Address:
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5485125

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IEEE TRANSACTIONS ON NUCLEAR SCIENCE Volume: 57 Issue: 3 Pages: 1308-1311 Part: Part 2 Published: JUN 2010

IEEE TRANSACTIONS ON NUCLEAR SCIENCE Volume: 57 Issue: 3 Pages: 1312-1315 Part: Part 2 Published: JUN 2010

Development and Evaluations of Apatite Crystal Scintillators

Crystal Growth and Evaluations of Nd:LuLiF 4 Scintillators forDifferent Nd Concentration

T. Yanagida 1; Y. Fujimoto 1; Y. Ohgi 2; Y. Yokota 1; A. Yoshikawa 1,3; H. Kagi 2; K. Sugiyama 4;
K. Kamada 1
1. Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, JapanT. Yanagida 1; N. Kawaguchi 1,2; S. Ishizu 2; Y. Yokota 1; K. Fukuda 2; T. Suyama 2; A. Yoshikawa 1,3;
H. Sekiya 4; H. Kubo 5; T. Tanimori 5; V. Chani 1

2. Univ Tokyo, Grad Sch Sci, Geochem Lab, Tokyo 1130033, Japan

1. Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan

3. Tohoku Univ, New Ind Creat Hatchery Ctr, Sendai, Miyagi 9808579, Japan

2. Tokuyama Corp, Tokyo 1508383, Japan

4. Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

3. Tohoku Univ, New Ind Creat Hatchery Ctr, Sendai, Miyagi 9808579, Japan
4. Univ Tokyo, Inst Cosm Ray Res, Kamioka Observ, Hida 5061205, Japan

Abstract:
Five apatite crystal scintillators, which have chemical compositions of Ce 0.5%:
Gd(9.33) (SiO 4 ) 6 O 2 , Ce 0.5%:(Gd 8 Sr 2 )(SiO 4 ) 6 O 2 , Ce 5%:(Gd 8 Sr 2 )(SiO 4 ) 6 O 2 , Yb
0.5%: (Gd 8 Sr 2 )(SiO 4 ) 6 O 2 and Yb 3%:(Gd 8 Sr 2 ) (SiO 4 ) 6 O 2 were grown by the micropulling down method. After cut and polishing processes, optical and radiation properties
were evaluated. In a transmittance measurement, Ce doped crystals showed anabsorption feature at approximately 300 nm and Yb doped ones 220 nm, respectively.
When Ce-doped ones were excited by 340 nm photons, the emission peak appeared at
approximately 400 and 440 nm, due to Ce3+ 5d-4f transitions. In Yb-doped series, 270
nm excitation caused emission peaking around 300 nm. The photoluminescence decay
time kinetics of Ce-doped series were investigated. The Ce 0.5% doped (Gd 8 Sr 2 )(SiO 4 ) 6 O 2 showed about 23 ns decay constants, and the 5% doped one showed 14 ns.
When coupled with Si- APD and irradiated by 241Am alpha-ray, Ce doped scintillators
showed 300-500 photons/5.5 MeV alpha as a light yield.
E-mail Address:t_yanagi@tagen.tohoku.ac.jp
Site Address:

5. Kyoto Univ, Fac Sci, Dept Phys, Kyoto 6068502, Japan

Abstract:
In order to develop novel scintillating materials, we grew 0.5 mol%, 1 mol%, and 3
mol% Nd-doped LuLiF 4 scintillators by the micro-pulling down method, because
LuLiF 4 has a very wide band gap and Nd3+ shows fast and intense 5d-4f emission as aluminescence center. The transmittance and emission peaks were examined in thesethree samples by using our original spectrometer made by Bunkou-Keiki Company. At
wavelengths longer than 180 nm, approximately 60-80% transmittance with threeabsorption peaks around 140, 160 and 175 nm and emission peak at approximately 180
nm were observed for all the crystals. Light yields and decay time constants of thesamples irradiated by 241Am alpha-ray were measured using photomultiplier tubes
R8778 (Hamamatsu). The light yield of the 1 mol% doped LuLiF 4 was 700
photons/5.5MeV alpha that is much greater than that of Nd:LaF 3 scintillator (100photons/5.5MeV alpha). As for decay time profiles, the main component of Nd: LuLiF 4
was 12 ns in the case of alpha-ray irradiation. 137Cs 662 keV gamma-ray
photoabsorption peak was detected in 1 mol% doped LuLiF 4 only, and the light yieldwas 300 ph/MeV.

http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5485085

E-mail Address:t_yanagi@tagen.tohoku.ac.jp
Site Address:
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5485088

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IEEE TRANSACTIONS ON NUCLEAR SCIENCE Volume: 57 Issue: 3 Pages: 1316-1319 Part: Part 2 Published: JUN 2010

IEEE TRANSACTIONS ON NUCLEAR SCIENCE Volume: 57 Issue: 3 Pages: 1320-1324 Part: Part 2 Published: JUN 2010

Gamma-Ray Responses of Pr:LuYAP and Pr:YAP Scintillators

Crystal Growth and Characterization of Rare Earth Doped K 3 LuF 6

T. Yanagida 1; K. Kamada 2; Y. Yokota 1; Y. Fujimoto 1; S. Maeo 1; A. Yoshikawa 1,3

N. Abe 1; Y. Yokota 1; T. Yanagida 1; N. Kawaguchi 1,2; K. Fukuda 1,2; J. Pejchal 1,3; M. Nikl 1,3;

1. Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan

A. Yoshikawa 1,4

2. Furukawa Co Ltd, Tsukuba 3050856, Japan

1. Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan

3. Tohoku Univ, New Ind Creat Hatchery Ctr, Sendai, Miyagi 9808579, Japan

2. Tokuyama Co, Tokyo 1508383, Japan
3. Inst Phys AS CR, Prague 16253, Czech Republic

Abstract:
Pr3+ doped LuYAP crystal was grown by the Czochralski method with 1 inch diameterand 10 cm length. In order to compare scintillation characteristics, Pr3+ doped YAP
crystal was also grown by the micro-pulling-down method. Absorption spectra of themwere measured and Pr3+ 4f -> 4f5d and 4f 2 -> 4f absorption lines were observed at 230,
470, and 600 nm, respectively. In photoluminescence measurements, here excited by Xelamp pulse of wavelength around 223, 250 and 280 nm emission lines due to Pr3+ 4f5d-> 4f transition were detected. When coupled with PMT R7600 and irradiated by
gamma-rays, gamma-ray induced light yields were estimated as 1900 ph/MeV for
Pr:LuYAP and 5600 ph/MeV for Pr: YAP. In both crystals, light yield
non-proportionality and energy resolution were investigated by individual lines in the
gamma-ray energy range from 59.5 keV to 1408 keV. The gamma-ray excited decay
time constants turned out to be 9.8 ns for Pr: LuYAP and 9.0 ns for Pr: YAP.
E-mail Address:t_yanagi@tagen.tohoku.ac.jp
Site Address:
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5485090

4. Tohoku Univ, NICHe, Sendai, Miyagi 9808579, Japan

Abstract:
Transparent K 3 LuF 6 single crystals doped with rare earth ions were successfully grownby the micro-pulling down method (mu-PD). X-ray diffraction measurements showedthat the as-grown crystals possess monoclinic structure with P2(1)/n space group. The
radio- and photoluminescence spectra of the grown crystals were measured in thevacuum ultraviolet (VUV) and ultraviolet (UV) region. The intrinsic luminescence of
K 3 LuF 6 was observed at 163 and 200 nm. Nd-doped crystals displayed, in contrast,
emission at 183 nm, due to the Nd3+ 5d-4f transition, and their radioluminescenceintensity increases with increasing Nd concentration. Tm:K 3 LuF 6 showed highemission intensity at 190 nm in the radio- and photoluminescence spectra (lambda(exc)= 155 nm). Moreover, the emission intensity of 0.5% Tm:K 3 LuF 6 was higher than thatof 5% Tm:K 3 LuF 6 . Concerning Er: K 3 LuF 6 , the emission at 165 nm was detected forthe 0.5% Er:K 3 LuF 6 .
E-mail Address:
naotoabe@mail.tagen.tohoku.ac.jp
Site Address:
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=5485124

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IEEE TRANSACTIONS ON NUCLEAR SCIENCE Volume: 57 Issue: 3 Pages: 1325-1328 Part: Part 2 Published: JUN 2010

IEEE TRANSACTIONS ON NUCLEAR SCIENCE Volume: 57 Issue: 3 Pages: 1426-1429 Part: Part 2 Published: JUN 2010

Scintillation Properties of In Doped ZnO With Different In
Concentrations

Custom-Designed Fast-Response Praseodymium-Doped Lithium 6
Fluoro-Oxide Glass Scintillator With Enhanced Cross-Section for
Scattered Neutron Originated From Inertial Confinement Fusion

T. Yanagida 1; Y. Fujimoto 1; A. Yoshikawa 1,2; Y. Yokota 1; M. Miyamoto 3; H. Sekiwa 3; J.
Kobayashi 3; T. Tokutake 3; K. Kamada 1; S. Maeo 1

T. Murata 1; S. Fujino 2; H. Yoshida 3; Y. Arikawa 4; T. Nakazato 4; T. Shimizu 4; N. Sarukura 4;

1. Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan

M. Nakai 4; T. Norimatsu 4; H. Azechi 4; K. Kamada 5; Y. Usuki 5; T. Suyama 6; A. Yoshikawa 7;

2. Tohoku Univ, New Ind Creat Hatchery Ctr, Sendai, Miyagi 9808579, Japan

N. Sato 8; H. Kan 8

3. Mitsubishi Gas Chem Co Ltd, Tokyo 1250051, Japan

1. Tokai Univ, Sch Sci, Dept Chem, Minami Aso, Japan
2. Kyushu Univ, Dept Mat Proc Engn, Grad Sch Engn, Fukuoka 812, Japan

Abstract:
Using the liquid phase epitaxy (LPE) method we prepared the high crystalline quality
In3+ doped ZnO thin film scintillators with different Indium concentration of 26, 53, and141 ppm. We evaluated their optical properties and radiation response, because there are
few reports of radiation response of In-doped ZnO scintillator. In order to imitate thescintillator application, we measured the alpha-ray excited luminescence spectra. The
emission bands peaking around 375 and 500 nm were observed, and with an incrementof In3+, the intensity of both bands decreases. In the measurement of light yield, we
optically coupled the sample with PMT R7600 by a silicone grease, and excitation wasprovided by 241 Am 5.5 MeV alpha-rays. The samples showed of about 10% of the lightyield of BGO scintillator which was used as a reference. Under the same excitation the
scintillation decay was measured in all the samples as well.
E-mail Address:t_yanagi@tagen.tohoku.ac.jp
Site Address:

3. Ceram Res Ctr Nagasaki, Hasami, Japan
4. Osaka Univ, Inst Laser Engn, Suita, Osaka 565, Japan
5. Furukawa Co Ltd, Tsukuba, Ibaraki, Japan
6. Tokuyama Corp, Tokyo, Japan
7. Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 980, Japan
8. Hamamatsu Photon KK, Cent Res Lab, Hamamatsu, Shizuoka, Japan

Abstract:
Scintillation properties of Pr3+-doped 20 Al(PO 3 ) 3 -80 LiF glasses melted in N 2 were
investigated to seek a candidate for a scattered neutron scintillator in nuclear fusion
diagnostics. The fluorescence lifetime of the sample with 217 nm ultraviolet
femtosecond pulse excitation was measured to be 19.5 ns. More importantly, thefluorescence lifetime with alpha particles from 241Am radioisotope excitation wasdetermined to be 6.7 ns. Based on our material design strategy, we have successfully
developed the fast response time praseodymium-doped 6Li glass scintillator for
scattered neutron diagnostics.

http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5485087

E-mail Address:
fu-jino@chem-eng.kyushu-u.ac.jp
Site Address:
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5485094

88

89

IEEE TRANSACTIONS ON NUCLEAR SCIENCE Volume: 57 Issue: 3 Pages: 1492-1495 Part: Part 2 Published: JUN 2010

OPTICAL MATERIALS Volume: 32 Issue: 9 Pages: 1142-1145 Published: JUL 2010

Development of Pr:LuAG Scintillator Array and Assembly for
Positron Emission Mammography

Crystal growth and scintillation characteristics of the Nd3+ doped LaF 3
single crystal

T. Yanagida 1; A. Yoshikawa 1,2; Y. Yokota 1; K. Kamada 3; Y. Usuki 3; S. Yamamoto 4; M. Miyake 5; M.

K. Fukuda 1,2; N. Kawaguchi 1,2; S. Ishizu

Baba 5; K. Kumagai 5; K. Sasaki 5; M. Ito 5,6; N. Abe 1; Y. Fujimoto 1; S. Maeo
1

1

5

7

Tanaka ; A. Fukabori ; TR. dos Santos ; M. Takeda ; N. Ohuchi

1; Y. Furuya 1; H.

8

2; T. Yanagida 1; T. Suyama 2; M. Nikl 3; A. Yoshikawa 1,4

1. Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Aoba Ku, Sendai, Miyagi 9808577, Japan
2. Tokuyama Corp Shibuya, Shibuya Ku, Tokyo 1508383, Japan

1. Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan

3. Inst Phys AS CR, Vvi, Prague 16253, Czech Republic

2. Tohoku Univ, New Ind Creat Hatchery Ctr, Sendai, Miyagi 9808579, Japan

4. Tohoku Univ, NICHe, Aoba Ku, Sendai, Miyagi 9808579, Japan

3. Furukawa Co Inc, Tokyo 1250051, Japan
4. Kobe City Coll Technol, Kobe, Hyogo 6512194, Japan
5. Tohoku Univ, Cyclotron & Radioisotope Ctr, Sendai, Miyagi 9808578, Japan
6. Sendai Med Imaging Clin, Sendai, Miyagi 9800022, Japan
7. Tohoku Univ Hosp, Ctr Canc, Sendai, Miyagi 9808575, Japan
8. Tohoku Univ, Sch Med, Sendai, Miyagi 9808575, Japan

Abstract:
In order to detect the breast cancer at the early stage with high efficiency, we intend todevelop positron emission mammography (PEM), using Pr:LuAG single crystal as a
scintillator of this scanner. PEM has the same mechanism of PET, where two 511 keVannihilation gamma-rays are detected by two gamma cameras at opposite side, andreconstruction of the data shows the position of the cancer with malignancy grades.
After cutting and polishing processes for each crystal to a physical dimensions of 2.1 x
2.1 x 15 mm 3 , Pr:LuAG array covered with BaSO 4 reflector was used as a sensor head.
The one camera unit consisted of 20 x 64 pixels optically coupled with three H8500-03
multi anode PMTs. Our PEM required four cameras at each side. Finally, eight cameras
were installed in both sides of the prototype instrument and the spatial resolution was
evaluated using the 18F in the breast phantom.

Abstract:
Two-inch diameter Nd3+ doped LaF 3 single crystals were successfully grown by the
Czochralski technique. No remarkable absorption due to unfavorable impurities or color
centers was observed from optical absorption measurements in the vacuum ultra-violet
spectral region. The high crystallinity and homogeneous Nd3+ distribution were foundfrom X-ray rocking curve and chemical composition analysis, respectively. X-ray
excited luminescence spectrum was measured and the significant 4f25d–4f3
luminescence at 173 nm was observed in the grown crystal. The pulse height spectrum
and scintillation decay curves were taken upon c-ray irradiation. As a result, the grown
crystals demonstrated sufficient response to the c-ray, the light yield of 140 ± 30
photons/MeV, and fast scintillation decay of 7.6 ns.
E-mail Address:
ken-fukuda@tokuyama.co.jp
Site Address:
http://www.sciencedirect.com/science/article/pii/S0925346710001382

E-mail Address:t_yanagi@tagen.tohoku.ac.jp
Site Address:
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5485089

90

91

OPTICAL MATERIALS Volume: 32 Issue: 9 Pages: 845-849 Published: JUL 2010

OPTICAL MATERIALS Volume: 32 Issue: 9 Pages: 878-881 Published: JUL 2010

Crystal growth and VUV luminescence properties of Er3+- and Tm3+
-doped LiCaAlF 6 for detectors

Crystal growth and scintillation properties of NdF 3 single crystal

A. Yoshikawa 1,2; T. Yanagida 1; Y. Yokota 1; A. Yamaji 1; Y. Fujimoto 1; J. Pejchal 1,4; V. ChaniI 1; N.

1. Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Aoba Ku, Sendai, Miyagi 9808577, Japan

3

Kawaguchi ; S. Ishizu

3

3

3

; K. Fukuda ; T. Suyama ; M. Nikl

4

Y. Furuya 1; N. Kawaguchi 1,2; N. Abe 1; Y. Yokota 1; T. Yanagida 1; M. Nikl 3; A. Yoshikawa 1,4
2. Tokuyama Co Ltd, Sendai Res & Dev Ctr, Aoba Ku, Sendai, Miyagi, Japan

1. Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Aoba Ku, Sendai, Miyagi 9808577, Japan

3. Acad Sci Czech Republic, Inst Phys, Prague, Czech Republic

2. Tohoku Univ, New Ind Creat Hatchery Ctr NICHe, Aoba Ku, Sendai, Miyagi 9808579, Japan

4. New Ind Creat Hatchery Ctr NICHe, Aoba Ku, Sendai, Miyagi 9808579, Japan

3. Tokuyama Corp, Shibuya Ku, Tokyo 1508383, Japan
4. Acad Sci Czech Republic, Inst Phys, Prague 16253, Czech Republic

Abstract:
Er- and Tm-doped LiCaAlF 6 (LiCAF) single crystals were grown by the
micro-pulling-down (mu-PD) method. The crystals were transparent, 2.0 mm indiameter and 30-40 mm in length. Neither visible inclusions nor cracks were observed.
Photoluminescence spectra of Er- and Tm-doped LiCAF were measured. Broad band
emission due to the Tm3+ and Er3+ 5d-4f transitions dominated the spectrum at 163.5
and 165 nm respectively. These emissions had shortest wavelength among the fluoride
crystal hosts ever reported at room temperature experiments. The vacuum ultraviolet(VUV) luminescent crystals are attractive as scintillators for radiation detectors, which
employ photosensitive gases (such as TMAE or TEA) or photocathodes (such as Csl)
sensitive mostly to VUV photons.
E-mail Address:
yosikawa@tagen.tohoku.ac.jp
Site Address:

Abstract:
NdF 3 single crystal was efficiently grown from the melt by the micro-pulling-down(mu-PD) method. The grown crystal had a single-phase confirmed by XRD and showeda highly symmetric peak by XRC. Then optical properties and alpha-ray excited
scintillation properties in Vacuum Ultraviolet (VUV) wavelength region were
investigated. It showed 60-80% transmittance down to 170 nm, and broad luminescencecentered at 175 nm. The light yield and decay time of it were also evaluated under 5.5
MeV alpha-ray excitation (241Am). The light yield was evacuated to be 60 +/- 6 [Ph/5.5
MeV-alpha), and the decay time was also evacuated to be 6.9 ns under 5.5 MeV
alpha-ray excitation.
E-mail Address:
f.yuki@mail.tagen.tohoku.ac.jp
Site Address:
http://www.sciencedirect.com/science/article/pii/S0925346710000200

http://www.sciencedirect.com/science/article/pii/S0925346710001850

92

93

OPTICAL MATERIALS Volume: 32 Issue: 10 Pages: 1294-1297 Published: AUG 2010

OPTICAL MATERIALS Volume: 32 Issue: 10 Pages: 1298-1301 Published: AUG 2010

Positron emission mammography using Pr:LuAG scintillator - Fusionof optical material study and systems engineering

Defect states in Lu 3 Ga(x)Al(5-x)O 12 crystals and powders

A. Yoshikawa 1,9; T. Yanagida 1; K. Kamada 1,2; Y. Yokota 1; J. Pejchal 1,8; A. Yamaji 1; Y. Usuki 2; S.

H. Ogino 5; A. Yoshikawa 6

Yamamoto 3; M. Miyake 4; K. Kumagai 4; K. Sasaki 4; TR. dos Santos 4; M. Baba 4; M. Ito 4,5; M.
6

7

Takeda ; N. Ohuchi ; M. Nikl

8

E. Mihokova 1,2; A. Vedda 2; M. Fasoli 2; F. Moretti 2; A. Bulin 2; M. Nikl 1; M. Bettinelli 3; A. Speghini 4;
1. Inst Phys AS CR, VVI, Prague 16253, Czech Republic
2. Univ Milano Bicocca, Dip Sci Mat, I-20125 Milan, Italy

1. Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Aoba Ku, Sendai, Miyagi 9808577, Japan

3. Univ Verona, Lab Chim Stato Solido, DB, I-37134 Verona, Italy

2. Furukawa Co Inc, Tokyo 1250051, Japan

4. Univ Verona, DiSTeMeV, I-37029 S Floriano, VR, Italy

3. Kobe City Coll Technol, Kobe, Hyogo 6512194, Japan

5. Univ Tokyo, Sch Engn, Bunkyo Ku, Tokyo 1138656, Japan

4. Tohoku Univ, Ctr Cyclotron & Radioisotope, Sendai, Miyagi 9808578, Japan

6. Tohoku Univ, IMRAM, Sendai, Miyagi 9808577, Japan

5. Sendai Med Imaging Clin, Sendai, Miyagi 9800022, Japan
6. Tohoku Univ Hosp, Ctr Canc, Sendai, Miyagi 9808575, Japan
7. Tohoku Univ, Sch Med, Sendai, Miyagi 9808575, Japan
8. Inst Phys AS CR, Prague 16253, Czech Republic
9. Tohoku Univ, NICHe, Aoba Ku, Sendai, Miyagi 9808579, Japan

Abstract:
The breast cancer is one of the most frequent cause of death among female cancer
patients. However, when discovered at the early stage, the probability of recovery isvery high. Therefore, the development of positron emission mammography (PEM) to
detect the breast cancer at the early stage with high efficiency is demanding. As thediameter of the scanner part is small, a scintillator with faster response is required. As
the recently developed Pr:LuAG has almost twice as short scintillation decay time thanthat of Ce:LSO, the Pr:LuAG scintillator was employed in our recently developed PEM
system. One camera unit consisted of 20 x 64 scintillator pixels optically coupled withthree H8500-03 multi anode photomultipliers. The Pr:LuAG pixel size is 2.1 x 2.1 x 15
mm 3 and the BaSO 4 was used as a reflector. Four planar cameras are placed at bothsides. Therefore, eight cameras were installed at both sides of the instrument. The
spatial resolution was evaluated to be 1.1 mm using the 22Na point source.
Fluorodeoxyglucose with 18F hotspot image was also detected using the breast phantom.

Abstract:
We study defect states in undoped and Eu3+-doped Lu 3 Ga(x)Al(5-x)O 12 (x = 0-5) garnet
crystals by wavelength resolved thermally stimulated luminescence above room
temperature. Eu3+ ions act not only as recombination centres but also as hightemperature traps, as testified by the presence of a TSL peak at 450 degrees C correlatedwith Eu3+-doping. With increasing gallium content all glow peaks are shifted to lower
temperatures. This trend is confirmed also for powder samples prepared by sol-gel
technique. The observed low temperature shift of the glow peaks can be considered as aconsequence of the band gap reduction following the increase of Ga3+ concentration.
The comparison with the glow curve of a Ce3+-doped crystal is also shown.
E-mail Address:
mihokova@fzu.cz
Site Address:
http://www.sciencedirect.com/science/article/pii/S0925346710002089

E-mail Address:
yosikawa@tagen.tohoku.ac.jp
Site Address:
http://www.sciencedirect.com/science/article/pii/S0925346710002107

94

95

OPTICAL MATERIALS Volume: 32 Issue: 10 Pages: 1325-1328 DOI: 10.1016/j.optmat.2010.04.019 Published: AUG 2010

OPTICAL MATERIALS Volume: 32 Issue: 10 Pages: 1393-1396 DOI: 10.1016/j.optmat.2010.03.010 Published: AUG 2010

Nd concentration dependence on the optical and scintillation
properties of Nd doped BaF 2

Custom-designed scintillator for laser fusion diagnostics - Pr3+-doped
fluoro-phosphate lithium glass scintillator

N. Kawaguchi 2; T. Yanagida 1; Y. Futami 2; K. Fukuda 2; T. Suyama 2; Y. Yokota 1; A. Yoshikawa 1,3; M.

Y. Arikawa 1; K. Yamanoi 1; T. Nakazato 1; E. EstacioS 1; T. Shimizu 1; N. Sarukura 1; M. Nakai 1; T.

Nikl 4

Norimatsu 1; Y. Hironaka 1; H. Azechi 1; T. Murata 2; S. Fujino 3; H. Yoshida 4; K. Kamada 5; Y. Usuki 5;
1. Tohoku Univ, IMRAM, Aoba Ku, Sendai, Miyagi 9808577, Japan

T. Suyama 6; A. Yoshikawa 7; N. Satoh 8; H. Kan 8

2. Tokuyama Corp, Shibuya Ku, Tokyo 1508383, Japan

1. Osaka Univ, Inst Laser Engn, Suita, Osaka 5650871, Japan

3. Tohoku Univ, NICHe, Aoba Ku, Sendai, Miyagi 9808579, Japan

2. Kumamoto Univ, Kumamoto 8608555, Japan

4. Inst Phys AS CR, Prague 16253, Czech Republic

3. Kyushu Univ, Fukuoka 8190395, Japan
4. Ceram Res Ctr Nagasaki, Hasami, Higashisonogi 8593726, Japan

96

Abstract:
Nd concentration dependence on the scintillation properties of Nd(x) Ba(1-x) F(2+x) (X= 0.001-0.5) crystals were investigated. From X-ray induced emission spectra, theintensity from an intrinsic luminescence of BaF 2 including core-valence luminescenceand self-trapped-exciton (STE) emission were decreased with an increase of Nd
concentration. Decay times under 241Am alpha-ray excitation were evaluated by the
Photomultiplier Tube (PMT) Hamamatsu R8778 that was sensitive across the vacuum
ultra-violet (VUV) and visible wavelength range. The average decay times indicatedthat Nd doped BaF 2 with lower Nd concentration has obviously slower decay times thanthat of samples with higher Nd concentration because the decay time of STE emission
was slower than that of the core-valence luminescence in BaF2 and the emission of
5d-4f transition on Nd3+. The light yield of fast Nd3+ 5d-4f luminescence was quite
lower than STE emission of BaF 2 .

Abstract:
A novel custom-developed scintillator for laser fusion diagnostics is reported. With theaim of diagnosing scattered neutrons from the imploded high-density fusion plasma, afast response lithium-6 glass scintillator has been developed. Praseodymium, instead ofthe more widely-used cerium was chosen as the dopant. Sufficiently fast luminescence
lifetime for scattered neutron diagnostics (<20 ns) was experimentally observed, and thefeasibility was successfully shown in laser-fusion experiments at the GEKKO XII
facility of the Institute of Laser Engineering, Osaka University.

E-mail Address:
yosikawa@tagen.tohoku.ac.jp
Site Address:

E-mail Address:
arikawa-y@ile.osaka-u.ac.jp
Site Address:

http://www.sciencedirect.com/science/article/pii/S0925346710001722

http://www.sciencedirect.com/science/article/pii/S0925346710001205

5. Furukawa Co Ltd, Tsukuba, Ibaraki 3050856, Japan
6. Tokuyama Corp Shibuya, Shibuya 1508383, Japan
7. Tohoku Univ, Sendai, Miyagi 9808577, Japan
8. Hamamatsu Photon KK, Cent Res Lab, Hamamatsu, Shizuoka 4348601, Japan

97

JOURNAL OF CRYSTAL GROWTH Volume: 312 Issue: 19 Pages: 2795-2798 Published: SEP 15 2010

REVIEW OF SCIENTIFIC INSTRUMENTS Volume: 81 Issue: 10 Published: OCT 2010

Crystal growth and luminescent properties of Pr-doped K(Y,Lu) 3 F 10
single crystal for scintillator application

Down-scattered neutron imaging detector
measurement of inertial confinement fusion

K. Kamada 1; T. Yanagida 1; M. Nikl 2; A. Fukabori 1; A. Yoshikawa 1; K. Aoki 3

Y. Arikawa 1; K. Yamanoi 1; T. Nakazato 1; E. EstacioS 1; T. Shimizu 1; N. Sarukura 1; M. Nakai 1; H.

for

areal

density

1. Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 980, Japan

Hosoda 1; T. Norimatsu 1; Y. Hironaka 1; H. Azechi 1; N. Izumi 2; T. Murata 1,3; S. Fujino 4; H. Yoshida 5;

2. Acad Sci Czech Republic, Inst Phys, Prague, Czech Republic

K. Kamada 6; Y. Usuki 6; T. Suyama 7; A. Yoshikawa 8; N. Satoh 9; H. Kan 9

3. Czech Republ Stella Chemifa Co Ltd, Prague, Czech Republic

1. Osaka Univ, Inst Laser Engn, Suita, Osaka 5650871, Japan
2. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

Abstract:
Pr1%:K(Y(1-x)Lu(x)) 3 F 10 (x=0, 0.2, 0.4) single crystals were grown by the mu-PD
method. All the grown crystals were greenish and perfectly transparent without any
inclusions or cracks. Radioluminescence spectra and decay kinetics of the
Prl%:K(Y,Lu) 3 F 10 crystals were measured. Emission from the Pr3+ 5d-4f transition,
peaking around 260 nm and of the decay time of around 22 ns were observed. The 5d-4f
emission intensities of the Pr1%:K(Y,Lu) 3 F 10 , crystals were higher than that of thestandard BGO scintillator.
E-mail Address:
k-kamada@furukawakk.co.jp
Site Address:
http://www.sciencedirect.com/science/article/pii/S0022024810003908

3. Kumamoto Univ, Kumamoto 8608555, Japan
4. Kyushu Univ, Fukuoka 8190395, Japan
5. Ceram Res Ctr Nagasaki, Hisami, Higashisonogi 8593726, Japan
6. Furukawa Co Ltd, Tsukuba, Ibaraki 3050856, Japan
7. Tokuyama Co Ltd, Shibuya Ku, Tokyo 1508383, Japan
8. Tohoku Univ, Sendai, Miyagi 9808577, Japan
9. Hamamatsu Photon KK, Shizuoka 4348601, Japan

Abstract:
A custom developed 6Li glass scintillator (APLF80+3Pr) for down-scattered neutron
diagnostics in inertial confinement fusion experiments is presented. 6 Li provides anenhanced sensitivity for down-scattered neutrons in DD fusion and its experimentallyobserved 5-6 ns response time fulfills the requirement for down-scattered neutron
detectors. A time-of-flight detector operating in the current mode using the
APLF80+3Pr was designed and its feasibility observing down-scattered neutrons wasdemonstrated. Furthermore, a prototype design for a down-scattered neutron imaging
detector was also demonstrated. This material promises viability as a future
down-scattered neutron detector for the National Ignition Facility.
E-mail Address:
arikawa-y@ile.osaka-u.ac.jp
Site Address:
http://rsi.aip.org/resource/1/rsinak/v81/i10/p10D303_s1

98

99

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS

DETECTORS AND ASSOCIATED EQUIPMENT Volume: 621 Issue: 1-3 Pages: 473-477 Published: SEP 2010

DETECTORS AND ASSOCIATED EQUIPMENT Volume: 623 Issue: 3 Pages: 1020-1023 Published: NOV 21 2010

Growth and scintillation properties of BaMgF 4

Growth and scintillation properties of Pr doped YAP with different Pr
concentrations

T. Yanagida 1; N. Kawaguchi 3; Y. Fujimoto 1; M. Sugiyama 1; Y. Furuya 1; K. Kamada 1; Y. Yokota 1, A.
Yoshikawa 1,2; V. Chani 1
1. Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Aoba Ku, Sendai, Miyagi 9808577, Japan

100

T. Yanagida 1; K. Kamada 1; Y. Fujimoto 1; M. Sugiyama 1; Y. Furuya 1; A. Yamaji 2; Y. Yokota 1; A.
Yoshikawa 1,2

2. Tohoku Univ, New Ind Creat Hatchery Ctr NICHe, Aoba Ku, Sendai, Miyagi 9808579, Japan

1. Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Aoba Ku, Sendai, Miyagi 9808577, Japan

3. Tokuyama Corp, Shibuya Ku, Tokyo 1508383, Japan

2. Tohoku Univ, New Ind Creat Hatchery Ctr NICHe, Aoba Ku, Sendai, Miyagi 9808579, Japan

Abstract:
By using the micro-pulling down (mu-PD) method, the barium magnesium fluoride(BaMgF4) single crystalline scintillator was produced. The crystal was cut and mirror
polished to the physical dimensions of 1 x 2 x 10 mm(3) for examination of scintillation
properties. BaMgF4 demonstrated similar to 70% transmittance in wavelength range
above 170 nm, and strong emission peaking around 205 nm was observed under X-ray
excitation. The absolute light yield of BaMgF4 was 1300 +/- 100 ph/MeV, and the
decay time profile showed two components as 0.57 +/- 0.01 (70%) and 2.2 +/- 0.31
(30%) ns at room temperature. (C) 2010 Elsevier B.V. All rights reserved.

Abstract:
Pr3+ 0.2, 0.75, and 3 mol% doped YAP single crystalline scintillators were grown by
using the micro-pulling down (mu-PD) method. Pr3+ 0.05 mol% doped YAP was also
prepared by using the Czochralski method. In transmittance spectra, 4f-5d absorption
line appeared at 230 nm. The mu-PD grown crystals showed intense emission at 290 nm
while the Czochralski grown one showed an emission peak at 245 nm in radio
luminescence spectra under X-ray excitation. Among them, the Czochralski grown one
exhibited the highest light yield under 137Cs 662 key excitation and the absolute lightyield of this sample was estimated to be 20400 +/- 2000 ph/MeV. The decay time
constants of these scintillators were around 10 ns due to Pr3+ 5d-4f transition.

E-mail Address:t_yanagi@tagen.tohoku.ac.jp
Site Address:

E-mail Address:t_yanagi@tagen.tohoku.ac.jp
Site Address:

http://www.sciencedirect.com/science/article/pii/S0168900210014087

http://www.sciencedirect.com/science/article/pii/S0168900210017961

101

JOURNAL OF CRYSTAL GROWTH Volume: 313 Issue: 1 Pages: 37-41 Published: DEC 15 2010

OPTICAL MATERIALS Volume: 33 Issue: 3 Pages: 284-287 Published: JAN 2011

Crystal growth and scintillation properties of Ce and single crystals

Crystal growth and scintillation properties of Nd:CaF 2

K. Kamada 1,2; T. Yanagida 1; K. Aoki ; N. Solovieva 1; M. Nikl ; A. Fukabori 1; A. Yoshikawa 1,2

H. Tanaka 1,2; N. Kawaguchi 2,3; N. Abe 2; Y. Furuya 2; Y. Yokota 2; T. Yanagida 2; J. Pejchal 4; M.

1. Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 980, Japan
2. Tohoku Univ, New Ind Creat Hatchery Ctr, Sendai, Miyagi 980, Japan

Nikl 4; Y. Kawazoe 1; A. Yoshikawa 2,5
1. Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan
2. Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Aoba Ku, Sendai, Miyagi 9808577, Japan

Abstract:
In this study (Gd(1-x)Y(x))F 3 (x=0 2 04 0 5 0 6 and 0 8) crystals were grown by the
mu-PD method Neither visible inclusions nor cracks were observed in (Gd(1-x)Y(x))F 3(x=0 4 0 5 and 0 6) crystals Lattice constants increase linearly as the Y3+ concentration
decreases Using (Gd(1-x)Y(x))F3 as a host material the Sr0 5% Ce1% 3% 5% and 7%
co-doped Gd(0 5)Y(0) 5 F 3 single crystal was prepared In this crystal Ce3+perturbed
luminescence at 380 nm is observed with 31 8 ns photoluminescence decay time Under
X-ray excitation rather high radioluminescence intensity of this band was obtained
exceeding that of BGO scintillator The energy transfer in the sequence of regular Ce3+-> (Gd3+)(n) -> perturbed Ce3+ sites was evidenced though observation of decay timeshortening of the regular Ce3+ and Gd3+ centers and intensity change between Gd3+ andCe3+-perturbed emission.
Site Address:
http://www.sciencedirect.com/science/article/pii/S0022024810003891

3. Tokuyama Co Ltd, Sendai Res & Dev Ctr, Aoba Ku, Sendai, Miyagi, Japan
4. Acad Sci Czech Republic, Inst Phys, Prague, Czech Republic
5. New Ind Creat Hatchery Ctr NICHe, Aoba Ku, Sendai, Miyagi 9808579, Japan

Abstract:
Nd3+ doped CaF 2 single crystal scintillator has been investigated. We tried to grow 1%,
5%, 10%, 20%, 30% and 40% Nd3+ doped CaF 2 single crystals by the simple
melt-solidifying method. Powder X-ray diffraction (XRD) patterns were measured to
identify the phase of all the samples. The XRD patterns of all the samples were similar
to CaF 2 . Those samples are compared in terms of their X-ray-excited radioluminescence
spectra, transmittance, alpha-ray-excited decay time and light yield. When the X-ray isused for excitation, luminescence is observed in the VUV region. Transmittance of thecrystals is more than 70% at wavelengths longer than about 180 nm. In the decay
kinetics, the fast components of the samples are distributed in less than 25 ns time range
and the slow components of sample are distributed in more than 90 ns. These decay
times became shorter with increasing Nd3+ concentration. They are related to the Nd3+
5d-4f VUV emission. The light yields of samples are distributed in 5-2500 photon/5.5
MeV alpha-ray and decrease with increasing Nd3+ concentration. (C) 2010 Elsevier B.V.
All rights reserved.
E-mail Address:
a9tm5320@cs.he.tohoku.ac.jp
Site Address:
http://www.sciencedirect.com/science/article/pii/S0925346710004076

102

103

OPTICAL MATERIALS Volume: 33 Issue: 3 Pages: 413-418 Published: JAN 2011

JAPANESE JOURNAL OF APPLIED PHYSICS Volume: 50 Issue: 1 Special Issue: SI Article Number: 01BG04 Part: Part 3
Published: JAN 2011

Optical properties and gamma-ray response of Czochralski grown
Pr:Lu 3 Al 5 O 12 scintillating garnet crystals with different Pr content
T. Yanagida 1; M. Sato 1; K. Kamada 1,2; Y. Fujimoto 1; Y. Yokota 1; A. Yoshikawa 1,3; V. Chani 1
1. Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan

Scintillation Characteristic of In, Ga-Doped ZnO Thin Films withDifferent Dopant Concentrations
Y. Fujimoto 1,2; T. Yanagida 1; H. Sekiwa 4; Y. Yokota 1; V. Chani 1; A. Yoshikawa 1,3

2. Furukawa Co Ltd, Mat Res Lab, Tsukuba, Ibaraki, Japan

1. Tohoku Univ, IMRAM, Aoba Ku, Sendai, Miyagi 9808577, Japan

3. Tohoku Univ, NICHe, Aoba Ku, Sendai, Miyagi 9808579, Japan

2. JSPS, Chiyoda Ku, Tokyo 1028472, Japan
3. Tohoku Univ, NICHe, Aoba Ku, Sendai, Miyagi 9808579, Japan

Abstract:
Pr:LuAG single crystalline scintillators with different Pr3+ concentration, 0.1, 0.18, and0.22 mol% were grown by the Czochralski method. The crystals were cut to dimensionsof 2.2 x 2.2 x 15 mm 3 and polished, simulating sensors for Positron Emission
Tomography (PET). Their absorption coefficients were examined, and the absorption
strength was found to be proportional to the Pr concentration. The alpha-ray induced
emission spectra of the samples demonstrated two emission lines peaking at 310 and
370 nm. The emission intensities in the radio luminescence spectra were also
proportional to the Pr content. The absolute light yields and intrinsic energy resolution
under gamma-ray irradiation were evaluated at +20, 0, and -20 degrees C using
avalanche photodiode as a photodetector. Pr 0.22% doped crystal had strongest light
output of 16 400 ph/MeV, and its intrinsic energy resolution was around few % atseveral hundred key. When coupled with PMT, the decay time was around 25 ns, and it
was almost independent on concentration.

4. Mitsubishi Gas Chem Co Inc, Tokyo 1250051, Japan

Abstract:
The present study describes the first detailed evaluation of the rise and the decay time of
scintillation phenomenon in In3+- and Ga3+-doped ZnO thin films with different dopant
concentrations. In3+-( 25, 55, and 141 ppm) and Ga3+-( 33, 67, 333, and 1374 ppm)
doped ZnO films were grown by the Liquid Phase Epitaxy (LPE) method. The
characterization was performed using the pulse X-ray equipped streak camera system.
Both the rise and the decay times were shortened considerably with increasing content
of In3+ and Ga3+ in the films. However, the scintillation light yield under 241Am
alpha-ray excitation reduced when concentration of In3+ and Ga3+ in the ZnO films washigh.
Site Address:
http://jjap.jsap.jp/link?JJAP/50/01BG04/

E-mail Address:t_yanagi@tagen.tohoku.ac.jp
Site Address:
http://www.sciencedirect.com/science/article/pii/S092534671000409X

104

105

JAPANESE JOURNAL OF APPLIED PHYSICS Volume: 50 Issue: 1 Special Issue: SI Article Number: 01BG06 Part: Part 3

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS Volume: 248 Issue: 2 Pages: 444-447 Published: FEB 2011

Published: JAN 2011

Development of ZnO Based Charged Particle Monitor for Processing
Facility
1

1

1

1

2

2

2

T. Yanagida ; N. Kawaguchi ; Y. Fujimoto ; Y. Yokota ; T. Tokutake ; M. Miyamoto ; H. Sekiwa ; J.
2

1

Kobayashi ; V. Chani ; A. Yoshikawa

1,3

Optical and scintillation properties of Pr3+-doped Ca 3 (BO 3 ) 2 single
crystalsY. Fujimoto 1,2; T. Yanagida 1; Y. Yokota 1; N. Kawaguchi 3; K. Fukuda 1,3; D. Totsuka
51

1

Watanabe ; A. Yamazaki ; V. Chani ; A. Yoshikawa

4

; K.

1

1. Tohoku Univ, IMRAM, Aoba Ku, Sendai, Miyagi 9808577, Japan

1. Tohoku Univ, IMRAM, Sendai, Miyagi 9808577, Japan

2. JSPS, Chiyoda Ku, Tokyo 1028472, Japan

2. Mitsubishi Gas Chem Co Ltd, Tokyo 1250051, Japan

3. Tokuyama Corp, Tokyo 1508383, Japan

3. Tohoku Univ, New Ind Creat Hatchery Ctr, Sendai, Miyagi 9808579, Japan

4. Nihon Kessho Kogaku Co Ltd, Tatebayashi Gunma 3740047, Japan
5. Nagoya Univ, Chikusa Ku, Nagoya, Aichi 4648603, Japan

Abstract:
In the present paper, we describe the development of an alpha-ray imaging detector
based on a ZnO single crystalline scintillator and a position-sensitive photomultipliertube (PSPMT). The ZnO crystal was grown by the hydrothermal synthesis method with
2-in.-phi in diameter. The ZnO specimen was polished out to be 0.5mm in thickness.
After optically coupling with PSPMT, the crystal was irradiated with 241Am alpha-rayfor evaluation of both spatial resolution and pulse height spectrum. Using the charge
center of the gravity method, two-dimensional alpha-ray images were successfully
obtained. The efficiency of the energy window in terms of imaging quality was also
examined.
E-mail Address:t_yanagi@tagen.tohoku.ac.jp
Site Address:
http://jjap.jsap.jp/link?JJAP/50/01BG06/

Abstract:
Optical and scintillation properties of Pr3+-activated Ca 3 (BO 3 ) 2 (CBO) single crystals
for neutron scintillator applications were examined. The crystals were grown by the
micro-pulling down (mu-PD) method. In transmittance spectra, two absorption lines at
210 and 245 nm were observed and they were identified as Pr3+ transition from theground state 3 H to 5d state. The both of photo- and radio-luminescence spectra of
Pr3+-doped CBO crystals demonstrated intense peak at 260 and 310 nm which was
ascribed to the transition from the lowest 5d excited state to the 4f ground state levels of
3 H. The main decay component was about 16-17 ns under 245 nm excitation
wavelength. The relative scintillation light yield of 1.0% Pr3+-doped CBO was about
90% when compared with that of reference Li-class scintillator (GS20) under 241Am 5.5
MeV alpha-ray excitation, while that measured under (252)Cf neutron irradiation was
about 20%. It was concluded that this difference originated from the difference ofenergy released from the neutron reactions.
E-mail Address:fuji-you@tagen.tohoku.ac.jp
Site Address:
http://onlinelibrary.wiley.com/doi/10.1002/pssb.201000635/abstract;jsessionid=4579C9197C0CAF5F049
6108A49A170BF.d04t04?systemMessage=Wiley+Online+Library+will+be+disrupted+on+15+December+from+10%3A00-13%3A00+GMT+%2805%3A00-08%3A00+EST%29+for+essential+maintenance

106

107

JOURNAL OF NON-CRYSTALLINE SOLIDS Volume: 357 Issue: 3 Pages: 910-914 Published: FEB 1 2011

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS
DETECTORS AND ASSOCIATED EQUIPMENT Volume: 631 Issue: 1 Pages: 54-57 Published: MAR 1 2011

Optical and scintillation properties of Pr-doped Li-glass for neutron
detection in inertial confinement fusion process
A. Fukabori 1; T. Yanagida 1; V. Chani 1; F. Moretti 2; J. Pejchal 1,3; Y. Yokota 1; N. Kawaguchi 4; K.
Kamada 1,5; K. Watanabe 6; T. Murata 7; Y. Arikawa 8; K. Yamanoi 8; T. Shimizu 8; N. Sarukura 8; M.

Scintillation properties of transparent ceramic and single crystalline
Nd:YAG scintillators
T. Yanagida 1; K. Kamada 1; Y. Fujimoto 1; Y. Yokota 1; A. Yoshikawa 1,2; H. Yagi 3; T. Yanagitani 3

Nakai 8; T. Norimatsu 8; H. Azechi 8; S. Fujino 9; H. Yoshida 10; A. Yoshikawa 1,11

1. Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Aoba Ku, Sendai, Miyagi 9808577, Japan

1. Tohoku Univ, IMRAM, Aoba Ku, Sendai, Miyagi 9800812, Japan

2. Tohoku Univ, New Ind Creat Hatchery Ctr NICHe, Aoba Ku, Sendai, Miyagi 9808579, Japan

2. Univ Milano Bicocca, Dipartimento Sci Mat, I-20125 Milan, Italy

3. Konoshima Chem Co Ltd, Takuma 7691103, Japan

3. Inst Phys AS CR, Prague 16253 6, Czech Republic
4. Tokuyama Corp, Shibuya Ku, Tokyo 1508383, Japan
5. Furukawa Co Ltd, Mat Res Lab, Tsukuba, Ibaraki 3050856, Japan
6. Nagoya Univ, Grad Sch Engn, Chikusa Ku, Nagoya, Aichi 4648603, Japan
7. Tokai Univ, Sch Sci, Dept Chem, Kumamoto 8691404, Japan
8. Osaka Univ, Inst Laser Engn, Suita, Osaka 5650871, Japan
9. Kyushu Univ, Grad Sch Engn, Dept Mat Proc Engn, Fukuoka 8190395, Japan
10. Ceram Res Ctr Nagasaki, Nagasaki 8593726, Japan
11. Tohoku Univ, NICHe, Aoba Ku, Sendai, Miyagi 9808579, Japan

Abstract:
Optical and scintillation properties of Pr-doped Li-glass, 20Al(PO 3 ) 3 -80LiF:Pr 3%,
have been studied for applications in neutron detection systems. Based on opticaltransmission and reflectivity, the absorption coefficient and refractive index were
calculated from the Beer Lambert law. The absorption edge was apparently shifted to
the longer wavelength from 160 nm to 240 nm due to 4f -> 5d transitions of Pr ions.
The strong absorption peaks of praseodymium 4f -> 4f transitions were observed from
420 nm to 500 nm and around 590 nm. The radio-luminescence spectrum excitedby 241Am 5.5 MeV a source was measured. Strong emission peaks were observed
around 250 nm. The alpha-ray excited pulse height spectrum and decay kinetics werealso examined. Light yield was estimated to be 400 +/- 40 photons/5.5 MeV a and themain component of the decay time was evaluated to be about 12 ns. Furthermore, thepulse height spectrum of the glass excited by 252Cf neutrons was also measured, andthe light yield was estimated to be 140 +/- 10 photons/neutron.

Abstract:
Nd 0.1, 1.1, 2, 4, and 6 mol% doped YAG transparent ceramics are manufactured by thesintering method and their scintillation properties are compared with those of single
crystalline Nd 1 mol% doped YAG grown by the micro-pulling down method. Theyshow similar to 80% transmittance at wavelengths longer than 300 nm and strong
emission lines due to Nd3+ 4f-4f emission in their radio-luminescence spectra. Amongthem, the single crystalline sample shows the highest light yield of 11,000 ph/MeV
under gamma-ray excitation and the second highest one is from Nd 1.1 mol% doped
transparent ceramic, which shows 6000 ph/MeV. In these scintillators, dominant decay
time constant is around 2-3 mu s due to Nd3+ 4f-4f transitions.
E-mail Address:t_yanagi@tagen.tohoku.ac.jp
Site Address:
http://www.sciencedirect.com/science/article/pii/S0168900210027798

E-mail Address:
fukabori@mail.tagen.tohoku.ac.jp
Site Address:
http://www.sciencedirect.com/science/article/pii/S0022309310009774

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109

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERSOPTICAL MATERIALS Volume: 33 Issue: 5 Special Issue: SI Pages: 684-687 Published: MAR 2011

DETECTORS AND ASSOCIATED EQUIPMENT Volume: 631 Issue: 1 Pages: 68-72 Published: MAR 1 2011

Effect of Ce doping on scintillation characteristics of LiYF 4
gamma-ray detection
A. Fukabori 1; Y. Yokota 1; T. Yanagida 1; F. Moretti 2; V. Chani 1; N. Kawaguchi 3; K. Kamada 1,4; A.
Yoshikawa

1,5

Ce3+ dopant segregation in Y 3 Al 5 O 12 optical ceramics
W. Zhao 1,2; S. Anghel 1,3; C. Mancini 1; D. Amans 1; G. Boulon 1,4; T. Epicier 5; Y. Shi 6; X. Feng 6; Y.
Pan 6; V. Chani 4; A. Yoshikawa 4
1. Univ Lyon 1, CNRS, Phys Chim Mat Luminescents LPCML, UMR 5620, F-69622 Villeurbanne,
France1. Tohoku Univ, IMRAM, Aoba Ku, Sendai, Miyagi 9800812, Japan

2. Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China

2. Univ Milano Bicocca, Dipartimento Sci Mat, I-20125 Milan, Italy

3. Inst Appl Phys, MD-2028 Kishinev, Moldova

3. Tokuyama Corp, Shibuya Ku, Tokyo 1508383, Japan

4. Tohoku Univ, IMRAM, Aoba Ku, Sendai, Miyagi 9808577, Japan

4. Furukawa Co Ltd, Mat Res Lab, Tsukuba, Ibaraki 3050856, Japan

5. Univ Lyon, Inst Natl Sci Appl Lyon, CNRS, UMR 5510, F-69621 Villeurbanne, France

5. Tohoku Univ, NICHe, Aoba Ku, Sendai, Miyagi 9808579, Japan

6. Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Transparent Optofunct Inorgan Mat, Shanghai
200050, Peoples R China

Abstract:
Effect of Ce content on the gamma-ray response of LiYF 4 single crystals with four
different Ce concentrations is reported. The LiYF 4 crystals were grown by the
micro-pulling down method (mu-PD) with Ce content ranged from 0.1 to 10 mol%. The
emission spectra of all samples under alpha-ray (241Am) excitation are due to the Ce3+
5d-4f transition and are characterized by a band at about 320 nm. The pulse heightspectra under gamma-quanta (137Cs) were successfully observed and light yields were
evaluated to be about 2800 +/- 280 (2 mol%), 3000 +/- 300 (5 mol%), and 3700 +/- 370(10 mol%) phs/MeV, respectively. The energy resolution decreased with increasing of
Ce concentration as follows: 12 +/- 3 (2 mol%), 19 +/- 3 (5 mol%), and 30 +/- 22 (10mol%)%, respectively. The alpha/gamma ratio were evaluated to be about 0.18 (2mol%), 0.175 (5 mol%), and 0.15 (10 mol%), respectively. The non-proportionality
curve of specimen with Ce 5 mol% doping exhibited good proportionality. Furthermore,
the decay time examined with pulsed X-ray irradiation, detected using a streak camera,decreased with increasing of Ce concentration.
E-mail Address:
fukabori@mail.tagen.tohoku.ac.jp
Site Address:

Abstract:
Ce3+-doped YAG garnet optical ceramic have been sintered at the Shanghai Institute of
Ceramics in China to characterize dopant distribution in optical ceramics by combining
optical spectroscopy and two spatially resolved techniques as imaging confocal
microscopy and transmission electron microscopy. A strong Ce3+ segregation andspatial variations of content between grains and grain boundaries has been confirmed byquantitative data obtained by TEM microscopy. This observation is another evidence of
the inhomogeneous Ce3+ distribution across grain and grain boundaries in opticalceramics comparable to that of Nd3+ ions in YAG ceramics. These results correlate wellwith low segregation coefficients of Nd3+ and Ce3+ observed in the garnet crystals
grown from the melt and/or flux.
E-mail Address:
georges.boulon@pcml.univ-lyon1.fr
Site Address:
http://www.sciencedirect.com/science/article/pii/S0925346710004374

http://www.sciencedirect.com/science/article/pii/S0168900210028822

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JOURNAL OF CRYSTAL GROWTH Volume: 318 Issue: 1 Pages: 1175-1178 Published: MAR 1 2011

JOURNAL OF CRYSTAL GROWTH Volume: 318 Issue: 1 Pages: 549-552 Published: MAR 1 2011

Optical and scintillation properties of Sr7%:Ce15%:GdF 3 single
crystalGrowthandluminescence
properties(Na(0.425-x)Lu(0.575+x))F(2.15+2x) single crystals

A. Fukabori 1; K. Kamada 2; T. Yanagida 1; V. Chani 1; K. Aoki 1; Y. Yokota 1; S. Maeo

Y. Furuya 1; H. Tanaka 1; K. Fukuda 1,2; N. Kawaguchi 1,2; Y. Yokota 1; T. Yanagida 1; V. Chani 1; A.

1; M. Nikl 3; A.

Yoshikawa 1,4of

Eu-doped

Yoshikawa 1,3

1. Tohoku Univ, IMRAM, Aoba Ku, Sendai, Miyagi 9800812, Japan

1. Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Aoba Ku, Sendai, Miyagi 9808577, Japan

2. Furukawa Co Ltd, Tsukuba, Ibaraki 3050856, Japan

2. Tokuyama Co Ltd, Div Res & Dev, Aoba Ku, Sendai, Miyagi, Japan

3. AS CR, Inst Phys, Prague 16253 6, Czech Republic

3. New Ind Creat Hatchery Ctr NICHe, Aoba Ku, Sendai, Miyagi 9808579, Japan

4. Tohoku Univ, NICHe, Aoba Ku, Sendai, Miyagi 9808579, Japan

Abstract:
Optical properties, including optical transmittance, absorption coefficient, refractive
index, and dielectric constant, of Sr7%, Ce15% co-doped GdF 3 crystal grown by the
Czochralski method are discussed. Moreover, alpha-ray responses, including emission
spectrum, pulse height spectrum, and decay time, are also presented. This is the firstreport on refractive index, dielectric constant, and light yield under alpha-ray irradiationof the Sr:Ce:GdF 3 single crystal.
E-mail Address:
akihirofukabori@yahoo.co.jp
Site Address:
http://www.sciencedirect.com/science/article/pii/S0022024810009693

Abstract:(Na(0.425-x)Lu(0.575+x-y)Eu(y))F(2.15+2x) (x=0, +/- 0.05, y=0.001, 0.01, 0.05)
single crystals were grown from the melt by the precise atmosphere control typemicro-pulling-down (mu-PD) method. The grown crystals were single-phase materials
that were confirmed by X-ray diffraction, and their lattice constants increased whensubstitution of Lu with Eu increased. The crystals demonstrated about 90%
transmittance in the 400-900 nm region that decreased with greater doping with Eu or
Na. In all the crystals, strong absorption resulted from Eu2+ 5d-4f transition wasobserved around 200-350 nm. Eu2+ 5d-4f photoluminescence and radioluminescence
under alpha-ray excitation were also detected. The crystals with low content of Eu or Na
had high photoluminescence intensity; however, the radioluminescence intensity was
extremely low. Intensity of the Eu3+ 4f-4f emission increased with increase in Eu
concentration. Formation of Eu2+ in the grown crystals was also detected especially inthose that had low content of Eu and Na.
E-mail Address:
f.yuki@mail.tagen.tohoku.ac.jp
Site Address:
http://www.sciencedirect.com/science/article/pii/S0022024810007670

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113

JOURNAL OF CRYSTAL GROWTH Volume: 318 Issue: 1 Pages: 784-787 Published: MAR 1 2011

JOURNAL OF CRYSTAL GROWTH Volume: 318 Issue: 1 Pages: 737-740 Published: MAR 1 2011

Micro-pulling-down-method-grownside-pumped laser amplifier

Ce:LiCAF

M. Kouno 1; J. Gabayno 1; M. Cadatal-Raduban 1; M. Pham
1

1

1

1

for

; K. Yamanoi 1; E. Estacio 1; W. Garcia 2;

3

T. Nakazato ; T. Shimizu ; N. Sarukura ; T. Suyama ; K. Fukuda
Saito

crystal3,4

4

4; K. Kim ; A. Yoshikawa ; F.

4

Growth and characterization of Ce-doped Ca 3 (BO 3 ) 2 crystals forneutron scintillator
Y. Fujimoto 1,2; T. Yanagida 1; H. Tanaka 1; Y. Yokota 1; N. Kawaguti 4; K. Fukuda 1,4; D. Totsuka
6

6

Watanabe ; A. Yamazaki ; A. Yoshikawa

5

; K.

1,3

1. Tohoku Univ, IMRAM, Aoba Ku, Sendai, Miyagi 9808577, Japan
1. Osaka Univ, Inst Laser Engn, Osaka, Japan

2. JSPS, Chiyoda Ku, Tokyo 1028472, Japan

2. Univ Philippines, Natl Inst Phys, Quezon City 1101, Philippines

3. Tohoku Univ, NICHe, Aoba Ku, Sendai, Miyagi 9808579, Japan

3. Tokuyama Corp Tokyo, Tokyo, Japan

4. TOKUYAMA Corp, Shibuya Ku, Tokyo 1508383, Japan

4. Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 980, Japan

5. NIHON KESSHO KOGAKU CO LTD, Tatebayashi Gunma, Japan
6. Nagoya Univ, Chikusa Ku, Nagoya, Aichi 4648603, Japan

Abstract:
We demonstrate 290 nm lasing and femtosecond amplification using a
micro-pulling-down method-grown Ce:LiCaAlF 6 crystal, which was excited using
dual-side- and four-side-pumping schemes. These results show that the flexibility andlower cost of this growth technique as well as the multi-side pumping configurations
provide good prospects for high-power ultraviolet generation that will enhance theapplications of the Ce:LiCaAlF 6 laser and amplifier.
E-mail Address:
kouno-m@ile.osaka-u.ac.jp
Site Address:
http://www.sciencedirect.com/science/article/pii/S0022024810012108

Abstract:
Single crystals of undoped and Ce3+-doped Ca 3 (BO 3 ) 2 (CBO) are grown by the
Czochralski (CZ) method with an RF heating system. Undoped CBO crystal has hightransmittance in the 190-900 nm wavelength range, while the absorption bands wereobserved around 275 and 350 nm due to the transition from the 4f ground state levels of
3+
3+
2 F(5/2) and 2 F(7/2) to Ce 5d excited state in Ce -doped one. The photoluminescence
spectrum of Ce3+-doped CBO crystal showed strong emission band around 400 nm
under both 275 and 350 nm excitation due to the 5d-4f transition of Ce3+. In themeasurement of pulse height spectra under 241Am 5.5 MeV alpha-ray excitation,
Ce3+-doped CBO showed higher energy resolution compared with that of crystal grownby the micro-pulling down (mu-PD) method.
E-mail Address:fuji-you@tagen.tohoku.ac.jp
Site Address:
http://www.sciencedirect.com/science/article/pii/S0022024810009498

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JOURNAL OF CRYSTAL GROWTH Volume: 318 Issue: 1 Pages: 791-795 Published: MAR 1 2011

JOURNAL OF CRYSTAL GROWTH Volume: 318 Issue: 1 Pages: 823-827 Published: MAR 1 2011

Crystal growth, Nd distribution and luminescence properties of(Na(0.425+x)Lu(0.575-x-y)Nd(y))F(2.15-2x) single crystals

Growth of Y 2 O 3 , Sc 2 O 3 and Lu 2 O 3 crystals by the micro-pulling-down
method and their optical and scintillation characteristics

Y. Furuya 1; H. Tanaka 1; K. Fukuda 1,2; N. Kawaguchi 1,2; Y. Yokota 1; T. Yanagida 1; V. Chani 1; M.

A. Fukabori 1; V. Chani 1; K. Kamada 1,2; T. Yanagida 1; Y. Yokota 1; F. Moretti 3; N. Kawaguchi 4; A.

Nikl 3; A. Yoshikawa 1,4

Yoshikawa 1,5

1. Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Aoba Ku, Sendai, Miyagi 9808577, Japan

1. Tohoku Univ, IMRAM, Aoba Ku, Sendai, Miyagi 9800812, Japan

2. Tokuyama Co Ltd, Div Res & Dev, Aoba Ku, Sendai, Miyagi, Japan

2. Furukawa Co Ltd, Tsukuba, Ibaraki 3050856, Japan

3. Acad Sci Czech Republic, Inst Phys, CR-16200 Prague 6, Czech Republic

3. Univ Milano Bicocca, Dipartimento Sci Mat, I-20125 Milan, Italy

4. New Ind Creat Hatchery Ctr NICHe, Aoba Ku, Sendai, Miyagi 9808579, Japan

4. Tokuyama Corp, Aoba Ku, Sendai, Miyagi 9893204, Japan
5. Tohoku Univ, NICHe, Aoba Ku, Sendai, Miyagi 9808579, Japan

Abstract:(Na(0.425+x)Lu(0.575-x-y)Nd(y))F(2.15-2x) (x=0, y=0, 0.001, 0.01, 0.05, 0.1, 0.2:
x=+/- 0.01, 0.02, 0.05, y=0.05) single crystals were grown from the melt using the
precise atmosphere control type Micro-Pulling-Down (mu-PD) method to examine theirpotential as a new VUV scintillators. The grown crystals were single-phase materials
with fluorite type structure (Fm - 3m, Z=4) as confirmed by XRD and had good
crystallinity. The distribution of the crystal constituents in axial and radial directions
was evaluated, and only negligible non-uniformity along growth axis was detected. The
crystals demonstrated 70-90% transmittance above 176-188 nm wavelength and Nd3+
5d-4f luminescence (when exited by X-ray) observed around 185 nm. Both 5d-4f
absorption and emission peaks shifted to longer wavelength region. The
radioluminiscence measurements under 5.5 MeV alpha-ray excitation (241Am)
demonstrated the light yield of 35-90 [Ph/5.5 MeV-alpha] and the decay time of 5.5-7.5
ns.
E-mail Address:
f.yuki@mail.tagen.tohoku.ac.jp
Site Address:

Abstract:
The growth of Y 2 O 3 , Sc 2 O 3 , and Lu 2 O 3 single crystals using the micro-pulling-down
method is reported. Crystallinity, optical transmittance, and scintillation characteristics
including emission spectra, pulse height spectra, and decay kinetics under a-ray
excitation of the grown crystals were studied. The light yields of Y 2 O 3 , Sc 2 O 3 , andLu 2 O 3 crystals were estimated from the pulse height spectra excited by 241Am 5.5 MeV
alpha-rays, in about 920 +/- 92 ph/5.5 MeV alpha, 370 +/- 37 ph/5.5 MeV alpha, and150 +/- 15 ph/5.5 MeV alpha, respectively. The scintillation decay times of Y 2 O 3 ,Sc 2 O 3 , and Lu 2 O 3 crystals were estimated with following fast/slow parameters30.1/184, 14.6/51.3, and 16.7 ns, respectively. Furthermore, a-ray imaging was
performed using Y 2 O 3 crystal.
E-mail Address:
akihirofukabori@yahoo.co.jp
Site Address:
http://www.sciencedirect.com/science/article/pii/S0022024810009711

http://www.sciencedirect.com/science/article/pii/S0022024810010286

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JOURNAL OF CRYSTAL GROWTH Volume: 318 Issue: 1 Pages: 828-832 Published: MAR 1 2011

JOURNAL OF CRYSTAL GROWTH Volume: 318 Issue: 1 Pages: 908-911 Published: MAR 1 2011

Crystal growth and luminescence properties of Ti-doped LiAlO 2 forneutron scintillator

Development of modified micro-pulling-down method for bromide andchloride single crystals

J. Pejchal 1,2; Y. Fujimoto 1; V. Chani 1; F. Moretti 3; T. Yanagida 1; M. Nikl 2; Y. Yokota 1; A.

Y. Yokota 1; N. Kawaguchi 1,2; K. Fukuda 1,2; T. Yanagida 1; A. Yoshikawa 1,3; M. Nikl 4

Beitlerova 2; A. Vedda 3; A. Yoshikawa 1,4

1. Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Aoba Ku, Sendai, Miyagi 980, Japan

1. Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Aoba Ku, Sendai, Miyagi 9808577, Japan

2. Tokuyama Corp, Tokuyama, Yamaguchi, Japan

2. Inst Phys AS CR, Prague 16253, Czech Republic

3. Tohoku Univ, New Ind Creat Hatchery Ctr NICHe, Sendai, Miyagi 980, Japan

3. Univ Milano Bicocca, Dept Mat Sci, I-20125 Milan, Italy

4. Acad Sci Czech Republic, Inst Phys, Prague, Czech Republic

4. Tohoku Univ, New Ind Creat Hatchery Ctr NICHe, Aoba Ku, Sendai, Miyagi 9808579, Japan

Abstract:
To develop new and efficient neutron scintillator, Ti-doped LiAlO 2 single crystal wasgrown by micropulling-down method. The photoluminescence characteristics including
emission spectra, excitation spectra, and decay curves were measured. This material
exhibits relatively high light yield, which exceeds that of the Li-glass standard neutron
scintillator. There can be a possibility to further increase the efficiency by increasing the
dopant concentration. The Ti4+ charge transfer luminescence was found to be theleading luminescence process with 2.5 mu s decay time.
E-mail Address:
pejchal@fzu.cz
Site Address:
http://www.sciencedirect.com/science/article/pii/S002202481001033X

Abstract:
We developed a modified micro-pulling-down (mu-PD) method for the crystal growthof halide materials with highly hygroscopic nature. A removable chamber system of themodified mu-PD method that can enter a globe box filled with Ar gas enabled to handle
starting materials, set up a crucible and hot zone, grow a single crystal from the melt
and take out a grown crystal without exposing to outside atmosphere. By the modified
mu-PD method, CeCl 3 and Ce 1% doped LaBr 3 single crystals, which were famous as
scintillator with high light yield and energy resolution were grown. Grown CeCl 3 andCe:LaBr3 single crystals indicated high transparency and they have no visible cracks
and inclusions. In photoluminescence measurements, emission peak around 365 nm wasobserved for CeCl 3 single crystal and Ce:LaBr3 single crystal indicated two emission
peaks around 360 and 380 nm, which originated from 5d-4f transition of Ce3+ ion.
E-mail Address:
y-yokota@tagen.tohoku.ac.jp
Site Address:
http://www.sciencedirect.com/science/article/pii/S0022024810009437

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JOURNAL OF CRYSTAL GROWTH Volume: 318 Issue: 1 Pages: 916-919 Published: MAR 1 2011

JOURNAL OF CRYSTAL GROWTH Volume: 318 Issue: 1 Pages: 983-986 Published: MAR 1 2011

Growth of high-temperature phase KLu 2 F 7 single crystals using
quenching process

Growth and crystallinity of shaped and multiple sapphire crystals by amicro-pulling-down method

H. Tanaka 1,2; Y. Furuya 2; M. Sugiyama 2; Y. Fujimoto 2; V. Chani 2; Y. Yokota 2; T. Yanagida 2; Y.

Y. Yokota 1; V. Chani 1; M. Sato ; K. Tota ; K. Onodera ; T. Yanagida 1; A. Yoshikawa 1,2

Kawazoe 1; A. Yoshikawa 2,3
1. Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan

1. Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 980, Japan
2. Tohoku Univ, New Ind Creat Hatchery Ctr NICHe, Sendai, Miyagi 980, Japan

2. Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Aoba Ku, Sendai, Miyagi 9808577, Japan

Abstract:
KLu 2 F 7 single crystals were grown by micro-pulling-down method. KLu 2 F 7 has phasetransition around 730 degrees C, which is between melting temperature and room
temperature. The high-temperature phase is monoclinic and the low temperature phaseis orthorhombic. To keep the temperature of as-grown crystal above the phase transition
temperature, the conventional carbon hot zone was modified, and its temperature
gradient was investigated. Using the modified setup, KLu 2 F 7 crystal with monoclinic(high temperature) phase was grown. After the growth procedure, the as-grown crystal
was quenched to room temperature and it was found that the crystal keeps the
monoclinic (high temperature) phase at room temperature.

Abstract:
We developed a growth technique of shape-controlled and multiple crystals by amicro-pulling-down (mu-PD) method using a developed special configuration crucible.
A square tube-shaped sapphire crystal was grown with a molybdenum crucible withsquare tube die of 4 mm x 4 mm outer periphery and 2 mm x 2 mm inner periphery on
the bottom. In contrast, six multiple square-shaped sapphire crystals were
simultaneously grown by a molybdenum crucible with six circularly arrangedsquare-shaped dies with a size of 2 x 2 mm 2 on the bottom. Growth of six multiple
square-shaped sapphire crystals indicated a single phase alpha-Al 2 O 3 a and almost samelattice parameters by X-ray diffraction measurement. Crystallinities of the six crystals
were high in all positions of crystals comparable to the crystals grown by the
Czochralski method.

E-mail Address:
a9tm5320@cs.he.tohoku.ac.jp
Site Address:

E-mail Address:
y-yokota@tagen.tohoku.ac.jp
Site Address:

http://www.sciencedirect.com/science/article/pii/S0022024810009516

http://www.sciencedirect.com/science/article/pii/S0022024810007542

3. New Ind Creat Hatchery Ctr NICHe, Aoba Ku, Sendai, Miyagi 9808579, Japan

120

121

List of TV,
Journals and Newspaper Items

122

123

News and newspaper items
News items
1. SEIWA SCHOLAR SSOCIETY 2010 No.14
平成２２年度研究助成対象者ならびに研究題目
2. 稲森財団ニュース No. 71, May 2010
平成２２年度研究助成対象者ならびに研究題目
3. 公益財団法人 谷川熱技術振興基金 平成２２年度 事業報告書
平成２２年度 研究助成
「燃焼圧センサ用ランガサイトの形状制御技術」

Copies of News and Newspaper Items

124

125

126

127

128

129

130

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学会、学内における役員・委員等

Committees of academic societies and conferences
吉川 彰
Dr. Akira Yoshikawa, Associate Professor
日本結晶成長学会
Japanese Association for Crystal Growth Cooperation

理事（新技術・新材料分科会担当）
Trustee (responsible for
new technology and newmaterials branch)
編集委員
Member of the editorial
staff

132

日本学術振興会第 161 委員会
No. 161 committee, Japan Society for the Promotion of
Science

運営委員
Manager

応用物理学会
The Japan Society of Applied Physics

プログラム編集委員
Programming Committee

Europhysical Conference of Defects in Insulating Materials(EURODIM 2010)

国際諮問委員International Advisory
Committee

International Conference on Defects in Insulating Materials(ICDIM 2012)

国際諮問委員International Advisory
Committee

133

List of Events

134

135

2010 年度（平成 22 年度）吉川グループ行事
月

吉川グループ学会

44/28-295

5/11-14 ENFMC2010(San Paulo, BRASIL)
吉川
5/24-28 SORMA2010(Michigan, USA )吉川,柳田,藤本,福田,河口

5/21

6

6/21-26

6/13-14 放射線物理研究会(大阪)
6/18
学振１６１委員会(東京)7

PRE10(Florence, Italy)
吉川

EM-NANO(富山)吉川,柳田,藤本

4/27-28 阪大レーザー研シンポジウム 2010

学振１６１委員会(京都)7/10-17 EXCON’10(Brisbane, Australia)
吉川,柳田,藤本,古谷

7/23
7/26

学振１６１委員会(東京)次世代 PET 研究会

8

8/6-14

8/4-5

TDK 技術検討会(秋保温泉)

9

9/13-17 応用物理学会(長崎)吉川,柳田,横田,Jan,古谷,
田中,杉山,山路,鎌田,福田,
河口,戸塚
9/3-5 SSDC(Sydney, Australia)
吉川,柳田,藤本

9/29-10/1 大学発ｲﾉﾍﾞｰｼｮﾝ JAPAN2010 出展(NEDO)(東京)

10 10/22 焼肉

10/14-17 China-Japan FMA(富山)10/17-20 ISIAMOE-3(富山)横田10/6-711

10/30-11/7 IEEE NSS/MIC(Knoxville, USA)吉川,柳田,横田,山路,田中,
古谷,杉山,河口,福田,
鎌田,戸塚

11/12 学振１６１委員会(仙台)11/13-14 放射線物理研究会(作並温泉）
11/28-12/1 個人モニタリング・ワークショップ(大洗)

11/29-12/3 MRS Fall Meeting(Boston, USA)横田12/8-12 EIW2010(Lyon, FRANCE)
吉川,杉山

12/1 多元研発表会（さくらホール）
12/10-11 第 21 回光物性研究会(大阪)

7/30 ビアガーデン

12 12/27

忘年会

ICCG-16 (Beijing, China)
吉川,横田,藤本,古谷,田中,
Jan,Chani,深堀

1

136

研究会・講演会

テロ対策特殊装備展'10 (SEECAT)(東京)

Events and Memorieas

1/8-9 放射線物理研究会(静岡)1/11-13 学振１６１委員会(敦賀）1/24 次世代 PET 研究会(千葉)1/28-29 PET/MRI 国際ワ－クショップ(大阪)

2

2/4

3

3/5-6
王)

Farewell Party
スキー合宿(蔵 3/16-18 日本セラミックス協会
2011 年春季年会（浜松）吉川,柳田,深堀,杉山
3/23-27 応用物理学会（平塚）
吉川,柳田,横田,Jan,藤本,
山路,杉山,深堀,鎌田(圭),福田,河口3/28-30 原子力学会(福井)吉川2/1-3 放射線検出器とその応用(つくば)2/23-24 医療機器センター研究発表会(東京)3/14-15

TDK 研究会(松島)137Events of Yoshikawa laboratory
Hanami (Cherry-blossom viewing)

IEEE NSS / MIC 2010

Tennessee in U. S. A., October 30 – November 6, 2010

Tohoku Univ., April 21, 2010

Imoni-party
EXCON’ 10

Tennessee in U. S. A., November 1, 2010

Brisbane in Australia July 11
11-16,
16 2010138

139

TaNaCaF Party

Chiyoda Technol Co.
Conference

Sankichi, December 15, 2010

Oarai, November 28, 2010

Year End Party
Hanagyu, December 27 , 2010

Ski trip
Zao, March 5 , 2011

140

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河村研究室 吉川グループ研究報告書

2010 Research Reports of the
Kawamura Laboratory, Yoshikawa Group〒980-8577
宮城県仙台市青葉区片平 2-1-1
東北大学 金属材料研究所
先端結晶工学研究部 吉川研究室〒980-8579
宮城県仙台市青葉区荒巻字青葉 6-6-10
未来科学技術共同研究センター（NICHe）

兼任

Yoshikawa Laboratory
Research Laboratory on Advanced Crystal Engineering,
Institute for Materials Research (IMR), Tohoku University
2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, JAPANNew Industry Creation Hatchery Center (NICHe)
6-6-10 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, JAPANANNUAL REPORT 2010
Published on
発行日

April 10, 20122012 年 4 月 10 日

Publisher
発行者

Akira Yoshikawa
吉川 彰

Editors

Akira Yoshikawa, Yoshisuke Futami
Yoshikawa Laboratory
Research Laboratory on Advanced Crystal Engineering,
Institute for Materials Research (IMR),
Tohoku University

編集者

New Industry Creation Hatchery Center (NICHe),
Tohoku University
吉川 彰、二見能資
東北大学 金属材料研究所
先端結晶工学研究部 吉川研究室

Printed by
印刷所

Yoshikawa Laboratory
吉川研究室

Kawamura Lab.
Yoshikawa Group
Research Report
Published on June 1, 2011

ANNUAL REPORT 2010
編集・発行
東北大学 金属材料研究所
吉川研究室
吉川彰・二見能資

144

Edited and published by
A. Yoshikawa
Yoshikawa Laboratory
Institute for Materials Research,
Tohoku University
http://yoshikawa-lab.imr.tohoku.ac.jp/