English Abstracts

2S01 The role of radiochemical neutron activation analysis in

the apparent solubility of the actinide and lanthanide hydrous oxides was

multidisciplinary research

investigated. The solubility and the size distribution of soluble species

Jan KUCERA

were measured by using different pore size filters at the acidic and(Nuclear Physics Institute, Czech Republic)

neutral pH in order to obtain the solubility products of the oxides and thehydrolysis constants of the metal ions. Systematic trends of mononuclear

2S03 Nuclear fission

and polynuclear hydrolysis constants were analyzed by using an

NAKAHARA, H.

electrostatic hard sphere model. Also, the formation constants of a metal(Professor Emeritus of Tokyo Metropolitan University)

ion with a series of carboxylates were determined by solvent extraction

History of Nuclear Fission Studies is briefly reviewed, especially,method. In order to analyze the observed trend of the formationfrom the days of “charged liquid drop” understanding to the days of

constants, a simple model was developed in which the ligand molecules“incorporation of nuclear shell effects of both the fissioning nuclide andwere considered as composed of a certain number of fragment

fission fragments”. We, the joint research group of Tokyo Metropolitan

components of functional groups and chemical bridges each of which

University and Japan Atomic Energy Research Institute, have attempted

differently contributes to the formation constant. The model is useful forto experimentally verify the two-mode, or multi-mode character ofpredicting the formation constants of humate complexes by combining

nuclear fission and to further clarify the characteristics of each mode.

the fragment components and parameter values.

Some new aspects of nuclear fission are expected for the new isotopes oftransactinium elements. For a better understanding of nuclear fission,

1A01

Adsorption behavior of element 104 rutherfordium on

development of a dynamical nuclear fission theory that incorporates

cation-exchange resin in HF/HNO3 solution

nuclear shell effects into the charged liquid drop model with proper

ISHII, Y.,a MIYASHITA, S.,a MORI, T.,a SUGANUMA, H.,a TOUME,

treatments of mass inertia and friction force needs to be waited.

M.,b KASAMATSU, Y.,c TOYOSHIMA, A.,c ASAI, M.,cNISHINAKA, I.,c TSUKADA, K.,c NAGAME, Y.c

3S01 Radiocarbon dating of the ancient Japanese document and(aRadiochem. Res. Lab., Shizuoka Univ., bGrad. Sch. Sci. Eng., Ibaraki

kohitsugire calligraphy

Univ., cJAEA)

ODA, H.,(Center Chronol. Res., Nagoya Univ.)

We have investigated cation-exchange behavior of Rf together withthe lighter homologues of the group-4 elements Zr and Hf, and theIn this study, radiocarbon ages of the ancient Japanese documents oftetravalent pseudo-homologue Th, in HF/HNO3 solution using

known age and unknown samples (kohitsugire) were measured. The

Automated Ion exchange separation apparatus coupled with theresult of known-age samples showed that the Japanese paper is a suitable

Detection system for Alpha spectroscopy (AIDA). The Kd values of Zr,

sample for radiocarbon dating because little discrepancy was observed

Hf, Th and Rf in HF/0.1 M HNO3 were decreased with increasing the

between the calibrated radiocarbon age and the written age. Kohitsugire

concentration of the fluoride ion [F-], indicating the formation of theare paper fragments with elegant calligraphy and were cut from oldfluoride complexes. The sequence of the fluoride complexation strength

manuscripts written mainly in the Heian-Kamakura period. Complete

is Zr ~ Hf > Rf > Th. In the symposium, we will also present themanuscripts written during the period are quite rare. Kohitsugire withcation-exchange behavior of Rf, Zr and Hf depending on the

known age, therefore, contains significant information for historical,

concentration of the hydrogen ion at the constant [F-].

literary and paleographical studies. Radiocarbon dating on the
kohitsugire attributed to Fujiwara no Yukinari is a notable example. The

1A02 Chemical behavior of element-105, Db, in mixed HF/HNO3

calligraphy was written on Tobikumogami paper, which has a billowing

solutionscloud pattern decorated with indigo-blue-dyed fiber. Radiocarbon age

KASAMATSU, Y.,1 TOUME, H.,1,2 TOYOSHIMA, A.,1 TSUKADA,

indicated the middle Heian period when Fujiwara Y. flourished as aK.,1 ASAI, M.,1 ISHII, Y.,1 NISHINAKA, I.,1 SATO, T. K.,1

calligraphist. Although it was commonly accepted that Tobikumogami is

SHINOHARA, N.,1 NAGAME, Y.,1 HABA, H.,3 KIKUNAGA, H.,3

peculiar to the middle 11th to early 12th century, the result suggested thatAKIYAMA, K.,4 GOTO, S.,5 ISHIKAWA, T.,5 KUDO, H.,5 SATO,

it is the oldest example among the extant Tobikumogami and that theW.,6 OOE, K.,6 KURIBAYASHI, T.,6 SHINOHARA, A.,6

origin would date back to the last 10th or the early 11th century.

KINOSHITA, N.,7 ARAI, M.,7 YOKOYAMA, A.,7 SAKAMA, M.,8
QIN, Z.,9 DÜLLMANN, CH. E.10

3S02

Thermodynamic study of the actinide and lanthanide(1JAEA, 2Ibaraki Univ., 3RIKEN, 4Tokyo Metropolitan Univ., 5Niigata

hydrous oxides

Univ., 6Osaka Univ., 7Kanazawa Univ., 8Tokushima Univ., 9IMP, 10GSI)

SASAKI, T.

Anion-exchange behavior of 262Db (half-life T1/2 = 34 s) produced in

The influence of the formation of polynuclear and colloidal species on

the 248Cm(19F, 5n) reaction at the JAEA tandem accelerator wasinvestigated in the mixed 0.89 M HF/0.3 M HNO3 solution ([F-] = 3 ×
10-3 M) with the automated ion-exchange separation apparatus coupled

1A05 Some examples on the relation between isotope effects andwithnuclear charge radii in chemical reactions

thedetectionsystemforalpha-spectroscopy(AIDA).

Anion-exchange behavior of its lighter homologues, Nb and Ta, was88

also studied under the same conditions using Nb (T1/2 = 14.3 min) and170

NOMURA M., SUZUKI T., FUJII Y.
(Research Lab. Nucl. Reactors, Tokyo Inst. Technol.)Ta (T1/2 = 6.76 min) produced in the natGe(19F, xn) and natGd(19F, xn)

The origin of uranium isotope effects in U(IV)-U(VI) exchange

reactions, respectively. It was found that the adsorption probability on theequilibrium has been proved to be in the nuclear volume effect or fieldanion-exchange resin is in the order of Ta > Nb ~ Db under the present

shift effect which is generated by the electron-nucleus interactions. In thecondition.

present work, the correlation between nuclear charge radii and isotope
effects is discussed based on the experimental results on electron

1A03 Gas phase chemistry of the group-4 elements using carbon

exchange reactions and ligand exchange reaction of selected elements.

cluster transport system
ISIKAWA, T.,1 GOTO, S.,1 KUDO, H.,1 TOYOSHIMA, A.,2

1A06 Characteristics of neutron multiplicity and nuclear charge

TSUKADA, K.,2 ASAI, M.,2 NAGAME, Y.2

polarization in proton-induced fission of 233U

(1Fac.of Sci., Niigata Univ., 2JAEA)NISHINAKA, I.,a TANIKAWA, M.,b NAGAME.,Y.,a NAKAHARA, H.c

Our group has studied the volatile properties of the compounds of(aAdvanced Sci. Res. Center., JAEA, bThe Univ.Tokyo, cTokyo Metro. Univ.)group-4 elements including Rf, especially tetrachloride compounds,

Characteristics of neutron multiplicity and nuclear charge polarization

using an isothermal gas chromatographic method. When He/KCl andhave been studied in the 11.5 MeV proton-induced fission of 233U. Fragment

HCl were used as the aerosol for the transportation and the chlorinating

mass and the average neutron multiplicity were measured by a double

reagent respectively, serious problems arose, for example, the generation

time-of-flight method. The most probable charges of secondary fragments wereof the nonvolatile chloride oxides by the residual oxygen in the system.

evaluated from fractional cumulative and mass yields. The nuclear charge

Then the carbon cluster was applied as the aerosol in order to eliminate

polarization of primary fragments at scission was obtained by correcting the mostthe residual oxygen in the system. In the test experiments using theprobable charge of secondary fragments for neutron evaporation. The results show

fission fragments from252

Cf, it was found that the transport efficiency

that the nuclear charge polarization at scission is associated with thewas comparable to that of the KCl aerosol, and the volatile compound of

liquid drop properties of nuclei and the proton shell effect with Z = 50 ofZr was observed. In this work, we carried out the on-line experiments ofheavy fragments. We will discuss the partition of excitation energy and theZr and Hf in order to apply this system to the experiments for Rf. The

nuclear charge polarization.

production efficiency of the volatile compounds in this system washigher than that in He/KCl and HCl system. It is suggested that the

1A07 Precision measurement of the half-life of 99mTc

residual oxygen was eliminated sufficiently by the carbon cluster.

KIKUNAGA, H.,a HIROSE, K.,b OHTSUKI, T.,b TAKAMIYA, K.,c
KASAMATSU, Y.,d NAKANISHI, T.,e MITSUGASHIRA, T.,f
16

1A04 Study on the synthesis of heavy elements using the Ba+ O

SEKINE, T.g

and La+16O reaction systems(aRIKEN, bLab. Nucl. Sci., Grad. School Sci., Tohoku Univ., cRes.

ARAI, M.,1 NANRI, T.,1 ASANO, A.,2 KINOSHITA, N.,3 OE, K.,4451

TAKAHASHI, N., SAITO, T., YOKOYAMA, A.
1

Grad. School Nat. Sci. Tech., Kanazawa Univ., 2Fac. Sci., Kanazawa
3

4

5

Univ., KEK, Grad. School Sci., Osaka Univ., Radioisotope ResearchCenter, Osaka Univ.

Reactor Inst., Kyoto Univ., dJAEA, eGrad. School Nat. Sci. Tech.,Kanazawa Univ., fIMRAM, Tohoku Univ., gGrad. School Sci., Tohoku
Univ.)In order to investigate the relationship between decay constant andchemical structure, we attempt to determine the half-life of 99mTc in

In order to study the nuclear fusion of deformed nuclei with heavy

various chemical states with good precision. Technetium-99m isotopes

ions, we adopted near lanthanoid targets, which are known to be

are able to obtain by disintegration of 99Mo, which is produced in the

deformed as actinoides. We performed bombardment of Ba and La

100

targets with 16O ions at the Research Center for Nuclear Physics, Osakaisotopes were isolated from the target by several chemical separation

University. In order to check the incident energy, we used a Rh target formethods. Two sources of 99mTc were prepared in different chemicalcomparison with the reference data, and we irradiated an Al target withforms; KTcO4 and Tc2S7. The half-lives of the 99mTc in different

Au catcher foil, for the calibration of the beam current. We obtained thechemical structures were determined by the reference source method

reaction cross sections of short-lived nuclides with a gas jet transport

using 137Cs. The results show that the 99mTc half-life in KTcO4 is shorter

system. With these results, we are in constructing accurate excitation

than that in Tc2S7, which is consistent with previous findings reported byfunctions for the nuclear systems.

Bainbridge et al. and Mazaki et al.

Mo(γ, n)99Mo reaction. After the irradiation of the 100Mo target, 99mTc

geomagnetic fields influence the intensities of cosmic rays entering into
1A08

238

230

226

U- Th- Ra radioactive disequilibria in the volcanic

the atmosphere, subsequently production rate of Be-10 varies with time.

products from younger Fuji and Izu-Oshima volcanoes

In this study we have determined Be-10 concentrations in 60 samples

KURIHARA, Y., TAKAHASHI, M., SATO, J.

collected from an ice core of the depth 95-122m (corresponding to the(Meiji Univ.)

age of 1100-238 B.C.), Dome Fuji, Antarctica, to investigate the secular

Magma genesis at subduction zone is generally inferred to be inducedchange of cosmic rays. Be was separated from the sample with cationby the partial melting of the mantle wedge by the addition of fluid

exchange resin and precipitated as Be(OH)2, then it was heated to form

derived from the subducting slab. Uranium-series disequilibria in the

BeO. Be-10/Be-9 ratios were determined by AMS (Accelerator Mass

volcanic products can be helpful to estimate the time-scales of magmatic

Spectrometry) at MALT, University of Tokyo. From the analyticalprocesses.

Observations were carried out on the radioactive

results we could obtain information on the secular variation of the annual

disequilibrium among 238U-230Th-226Ra with the volcanic products fromflux (deposition) of Be-10. The values were in the range 20x104 - 40x104

younger Fuji and Izu-Oshima volcanoes. U-238 and 230Th in volcanic

atoms/cm2/y. Around 700 B.C. a peak with the maximal Be-10 value

products were determined by isotope dilution method coupled with

was observed, suggesting that the levels of the cosmic rays decreased inalpha-ray spectrometry.

this period.

spectrometry.

Ra-226 was determined by gamma-ray

Activity ratios of

238

230

U/ Th and

226

230

Ra/ Th in the

volcanic products from younger Fuji and Izu-Oshima volcanoes were

1A11 Vertical distribution of particulate Th and Pu off Aomori

more than unity, being enriched in 238U and 226Ra relative to 230Th, which

OKUBO, A., ZHENG, J., NAKANISHI, T., AONO, T., YAMADA, M.,

is often observed for volcanic products from young island-arc volcanic

KUSAKABE, M., KAERIYAMA, H.

products.

238

U-230Th-226Ra radioactive disequilibria observed in the(NIRS)We examined the vertical distributions of 230Th, 239+240Pu activity andvolcanic products from younger Fuji and Izu-Oshima volcanoes imply ashort period of time (< 8,000 years) between magma genesis and240

Pu / 239Pu atom ratio in particles collected by large volume water

eruption.

in-situ pump in the western North Pacific Ocean (off Rokkasho, Japan).
This is the first information of vertical distribution of plutonium activity
36

1A09 Production rate of Cl in chondritic meteorites
OURA, Y.,a YAMAZAKI S.,a HASHIZUME F.,a EBIHARA M.,aTOSAKI Y.,b SASA K.,b NAGASHIMA Y.,b TAKAHASHI T.,b
MATSUSHI Y.,b TAMARI M.,b SUEKI K.,b MATSUMURA H.,c
BESSHO K.,c MIURA T.c(aTokyo Metropolitan Univ., bUniv. Tsukuba, cKEK)
As an initial study for estimation of an irradiation condition of
meteorites, production rate of 36Cl, which is a one of cosmogenic
nuclides, in chondritic meteorites were tried to be determined. Mineralphases with different chemical compositions were separated from twochondrites, Barwell and Allegan, by both physical and chemical
processings. Elemental compositions and 36Cl concentrations in thosephases were analyzed by activation analysis methods and AMS method,respectively. Though production rates of 36Cl in each target element were
fail to be obtained, those values for elemental pairs, (K+Ca) and Fe+Ca),
in Barwell were found to be 247 dpm/kg and 25 dpm/kg, respectively.
The similar values were also obtained using Allegan meteorite. Further
study for contribution of chlorine and depth dependent are required.
1A10 AMS analysis of Be-10 in ice core collected from Dome Fuji
(Antarctica)
MURAMATSU Y.,a HOSHINA M.,a HORIUCHI K.,b MATSUZAKI
H.,c MOTOYAMA H.d(aGakushuin Univ., bHirosaki Univ., cUniv. of Tokyo, dNIPR)
Be-10 (half-life: 1.5 million years) is produced in the atmosphere bycosmic ray spallation of oxygen and nitrogen. Solar activities andand Plutonium atom ratio in small particle (1-70 µm) and large particle(> 70 µm). 240Pu/239Pu atom ratios in large particle and small particle arealmost constant in all samples. The ratios are comparable with thosereported in western north pacific in earlier studies (Norisuye et al., 2006,
Yamada et al., 2006). Increase of 239+240Pu specific activities in large
particle could attribute to aging of particle. Low specific activity in small
particle at deepest layer could be consequence of dilution byresuspended sediment particles. High specific activity in small particle atshallowest layer suggests old decomposed particles (which has higher
specific activity) accumulate in this layer.
1A12 Co relationship on the behaviors between radionuclides andorganic matter in sweater
SUZUKI Y.a AONO T.b ISHIKAWA Y.c ,YAMAMOTO M.d(aShizuoka Univ., bIRS,cISER, dKanazawa Univ.)
Mesocosm experiment using the mesopelagic water of Suruga Bay
was carried out. Autotrophic biomass increased from 0.2 µg C l-1 to 1.3
mg C l-1 during the first 7 days of incubation. Nitrate and phosphate weredepleted rapidly during Days 7 to 12. Both nutrients-rich condition andlow grazing pressure due to the low concentration of predator in themesopelagic water at initial time caused bloom of autotrophic
components. These results suggest that organic materials weretransferred from autotrophic components to bacteria and subsequently to
HNF and ciliates through the microbial loop. POM (particulate organic
matter) was divided in to the different size (>500µm, 500~105, 105~25,
and 25~0.4) , and Th-234, Pb-210, Po-210 were measured in eachfraction. Th-234 was not detected in dissolved form, while 80% of
Th-234 in particulate form was found in size fraction from 0.6 to 500µm.
The behaviors of Th-234, Pb-210 and Po-210 was due to POM with sizeof 0.4 to 25µm. The size distribution of P-32 is corresponding to the sizeof nano-phytoplankton, and its turnover time is one week.

T.1, SATO, W.1, YOSHIMURA, T.1, MATSUMURA, H.2, KUBO, K.2,
MIURA, T.2, NISHIYAMA, K.2, SHINOHARA, A.1,
(1Osaka Univ., 2KEK, 3ICU)
We have been studying on the electron state after the formation ofpionic and muonic atoms. For this purpose, we have measured the

1A14 Radiation education using fireworks
ISHIKAWA, T.,a NIHON’YANAGI, H.,a OGASAWARA, H.,a MAKI,
S.,a TSUSHIMA, K.,b OSANAI, Y.,b ARATANI, M.,abelectronic X-ray energies emitted after the formation of pionic andmuonic atoms. The measurements for pionic atoms were performed at
KEK-PS and those for muonic atoms at KEK-MSL.

(aRokkasho Cultural Society, bAoimori Science BBL)
A new method for radiation education using fireworks has been
performed for beginners or children for the purpose of visual and merry
learning of radiation. Torahiko Terada, a famous scientist for his deep
literal literacy, wrote an essay under the title of “Sparkler”. The essay
gave us a hint that a stage of fire globe of the sparkler may be employed
for a model of nucleus at an excited state. If the fire globe will function
as a model of excited nucleus, we are able to look sparks from the fire
globe upon as radiations from the nucleus. This dynamic model ofradiation emission using sparkler has been exhibited at various kinds ofscience events for both children and citizens. After the demonstrations
using sparklers as the model of radiation emission from nucleus, wehave performed radiation measurement experiments of natural samplesof natural level, and typical samples derived from special areas wellknown as high-level natural sites. Radiation measurements combinedwith demonstration of sparklers were greatly appreciated by audiencesof science events. In addition to the sparkler, we have tried a rat type offirework.

The electronic X-ray energies are influenced by the atomic state ofpion or muon. Electron state, that is, electron vacancies also affect theseenergies. In this paper, we estimated the electronic energies for various
pionic or muonic state and electron structure conditions, and comparedthem with the measured energies to investigate atomic process after theformation of pionic and muonic atoms.
1B03 Spin conversion reaction of o-Ps with O2NIHEI, H., KINO, Y., SEKINE, T.
(Tohoku Univ.)
Quenching processes of the thermalized orthopositronium (o-Ps) onan oxygen molecule have been studied by the positron annihilation
lifetime measurement and age-momentum correlation technique. For thecreation of o-Ps, mixture of CO2 and O2 gases was prepared for sample
gas. A rate of the quenching, consisting of a pick-off annihilation and aspin conversion process, is estimated from a positron lifetime spectrum.
A Doppler-broadening spectrum of the 511-keV gamma rays from o-Ps
annihilations was measured. The Doppler-broadening spectrum consists

1B01 Local fields of ZnO observed by means of the TDPAC
method(aGrad. School Sci., Osaka Univ., bRes. Reactor Inst., Kyoto Univ.)
Zinc oxide is a typical n-type semiconductor, and it is known that its
conductivity varies with the introduction of dilute dopants. In order tocompare and/or contrast physical properties emerging into the bulk
sample with microscopic information, we applied the time-differential
perturbed angular correlation method with the 111Cd(

In) probe to a

5,000-ppm In-doped ZnO sample, temperature dependence wasobserved for the amplitude of the oscillating directional anisotropies;
whereas this phenomenon was not observed for the undoped ZnO
sample. As has already reported, in addition, the electric field gradients(EFG) were also different from each sample. In the present talk, we
difference

of

the

EFGs

and

the

reversible

temperature-dependent amplitude of the TDPAC spectra.
1B02 Investigation of atomic processes after the formation ofpionic and muonic atoms.

pick-off annihilation of o-Ps with a bound electron of an O2 moleculethe spin conversion of an o-Ps. The ratio of the pick-off annihilation
cross section to the spin-conversion cross section is deduced from theratio of the area of the broad component to that of the narrow component.
The cross section for the spin-conversion quenching is determined to be( 1.44 ± 0.32 ) × 10-19 cm2.

111

study of local fields of Indium-doped and undoped ZnO . For atheof broad and narrow components. The broad component results from theand the narrow component represents the self annihilation of p-Ps due toSATO, W.,a ITSUKI, Y.,a SHINOHARA, A.,a OHKUBO, Y.b

discuss

NINOMIYA, K.1, NAKAGAKI, R.1, SUGIURA, H.1, NAKATSUKA,

1B04 Temperature dependence of the positronium formation in
1-hexanol
KINOSHITA, S.,a KINO, Y.,a SEKINE, T.,a SUZUKI, T.b(aTohoku Univ., bKEK)
Positron annihilation lifetime spectroscopy (PALS) has been applied
to 1-hexanol as a function of the temperature and also the elapsed time inthe dark as well as in the light. Positron formation mechanism below,
around and above the glass transition temperature of 1-hexanol wasinvestigated.

Below

the

glass

transition

temperature

theortho-positronium intensity was decreased in the presence of visible light.
It is known that this phenomenon is ascribed to a radiation effect. In the
low temperature solid state, free electrons which are created by thebeta-plus irradiation are trapped by some trapping sites. An additionalsome different chemical state in the boron film. In addition, it was also

positronium is formed with the trapped electron. The trapped electron isobserved that the total D retention decreased and the amount of B-C

released by visible light. Around the temperature, no additionalbond was increased as the carbon concentration increased. Taking thempositronum is seen. Above the temperature, this effect is considered tointo consideration, it was suggested that B-C-D bond was formed as adisappear because some degrees of freedom of the molecules would be

new trapping sight by containing carbon in boron films.

released. In the case of 1-hexanol having a polar group, however,another additional positronium formation is seen. The ortho-positronium

1B07 Studies on hot atom chemical behavior of energetic ions in

intensity was decreased in the presence of visible light. The newsolids(XIV) -Trapping processes of deuterium implanted into solid

positronium formation mechanism will be discussed.

tritium breeding material, Li2TiO3 INAGAKI, Y., SUDA, T., ISHIKAWA, H., YOSHIKAWA, A., OYA,

1B05 Studies on hot atom chemical behavior of energetic ions in

Y., OKUNO, K.

solids (XII) - Implantation temperature dependence on chemical(Radiochem. Res. Lab.,Fac. of Sci. Shizuoka Univ.)

behavior of deuterium implanted into tungsten carbide -In blanket system for D-T fusion reactors, energetic tritium is

SUZUKI, S., KIKUCHI, Y., YOSHIKAWA, A., OYA, Y., OKUNO, K.

produced by the tritium breeding materials (TBMs). Lithium(Radiochem. Res. Lab., Fac. of Sci., Shizuoka Univ.)

compounds are thought to be used for TBMs to take advantage of

In D-T fusion reactors, carbon and tungsten would be employed as

Li(n,α)T reaction. From the viewpoint of tritium safety for fusion

divertor materials. In divertor region, WC layer is thought to be formed

reactors and establishment of tritium recovery system, it is important toby ion sputtering and high heat flux exposure during long-term plasma

estimate the trapping processes of tritium in TBMs.In this study, todischarge. From the viewpoint of tritium safety for fusion reactors, it isevaluate the tritium behavior, the trapping processes of deuterium inimportant to elucidate the chemical behavior of energetic tritium

Li2TiO3 and its chemical behavior were studied by means of TDS and

implanted into WC.

XPS. From the TDS spectrum, it is found that there were four D2

In this study, implantation temperature dependence on chemicaldesorption stages located, respectively, at around 380, 420, 500 and 600

behavior of implanted-deuterium was studied by means of XPS andK (Peaks 1-4). Peaks 1 and 2 were attributed to the desorption from the

TDS. The four D2 desorption stages was found from the TDS spectra.

sample surface, Peaks 3 and 4 were attributed to the desorption from

These peaks were located around 400, 490, 590 and 930 K (Peaks 1 – 4).

bulk and originated E'-center which is oxygen vacancy trapping one

It was found that Peak 1 was attributed to the desorption from theelectron and D bound to O as O-D bond, respectively.

interstitial site in WC where arranges three W atoms on planate andother two C atoms on vertical, and Peak 2 that from the interstitial site

1B08 Composition change of iron oxide thin films produced bywhich is opposite configuration of Peak 1. Peaks 3 and 4 werelaser deposition depending on oxygen pressure and generation

corresponded to the desorption of D trapped by C vacancy and bound totemperature

C, respectively.

KOUNO, K.,a KATOU, H.,a KOBAYASHI,Y.,b YAMADA,Y.,a(aTokyo Univ. of Science; bRIKEN)

1B06 Studies on hot atom chemical behavior of energetic in

Iron oxide films were produced by laser-evaporation of iron oxidesolids(XIII) - Effects of carbon impurity on chemical behavior ofsolid (Fe2O3) in the oxygen atmosphere.

energetic deuterium implanted into carbon-contained boron film -structures of the iron films were studied by Mössbauer spectroscopy, andThe compositions and

TOKUNAGA, T., YOSHIKAWA, A., KIKUCHI, Y., ISHIKAWA, H.,

the surface images were observed by SEM. The compositions of theSUDA, T., IGARASHI, E., OYA, Y., OKUNO, K.

iron oxide films varied depending on the pressure of oxygen atmosphere.

(Rediochem. Res. Lab., Fac. of Sci., Shizuoka Univ.)

When the Fe2O3 was laser-deposited in a vacuum, the film consists of

In D-T fusion reactors, boronization which is one of candidates for the

Fe3O4 (two sets of sextet) and divalent iron oxide particles (doublet).

first wall conditioning techniques is expected to reduce the impurities

The film obtained in 7 Pa of oxygen atmosphere was the almost neatsuch as oxygen and carbon in D-T plasma. It is also thought that the

Fe2O3 solid. When the oxygen pressure was high (45, 120, and 200

energetic tritium is also implanted into the impurities-contained boron

Pa), the trivalent iron particles became dominant. The laser-evaporated

films during fusion operations. Therefore, it is important to evaluate

particles were cooled down by the collision of oxygen molecules, andchemical behavior of tritium implanted in these boron films. In this study,

the energy of the particles arriving on the substrate is too low to form

energetic D2+ were implanted into the films, and carbon impurity effects

large crystal structure. It was shown that the neat Fe2O3 thin film canon chemical behavior of deuterium implanted the boron films werebe produced only in optimum oxygen pressure.

studied by means of TDS and XPS. And from the result of B-1s andC-1s XPS spectrum of peak energy and FWHM, that carbon exist in

1B09 Control for spin orientation according to substrate surface

shape of iron thin films produced by arc-plasma-gun
1

1

former, becomes small as a result of “structural relaxation” caused by

2

1

KATO, H., KONO, K., KOBAYASHI, Y., YAMADA, Y.

additional heat treatment at the temperature between glass transition(1Tokyo. Univ. of. Sci., 2RIKEN)

temperature (Tg) and melting point (Tm). This heat treatment

Fe atoms evaporated by an arc-plasma-gun were deposited onto Al

accompanies a marked systematic increase in the electrical conductivity

substrates to produce Fe films, and their Mössbauer spectra were(σ). In this study, activation energy (Ea) for the electrical conduction was

obtained in various geometries. The spin orientation of the iron film

estimated in order to clarify the relationship between the “structural

was found to be linear (one-dimensional) reflecting the shape of linear

relaxation” of the glass network and the Ea.

crystal produced along the grooves on the surface of Al substrates; alarge number of parallel grooves (10-nm depth, 100-nm width) were

1B12

produced on the surface of Al substrate (40-nm thick) by rolling Al plate.

compounds

When the iron was deposited by the arc-plasma-gun onto a

HAYAMI, S.,a URAKAMI, D.,a NAKASHIMA, S.,b SUZUKI, T.,cchemically-polished smooth surface, there observed no linear shape and

INOUE, K.athe spin orientation was found to be parallel to the surface(aHiroshima Univ., bN-BARD, Hiroshima Univ., cAdSM Hiroshima(two-dimentional). It was demonstrated that the spin orientaion of the

Univ.)

Fe films can be controlled by the deposition methods or the shape of
substrates.

Multiferroic property for organic-inorganic hybrid

The design of compounds which show multifunctional properties is ofcurrent focus in materials research, due to the fundamental andtechnological importance. The term, multiferroic, is coined to envision

1B10

Magnetic and nano-structure analysis of SnO2 doped with

Sb and Fe

ferroelectric, ferromagnetic, ferroelastic etc., in a single compound.
Compounds were prepared by simply mixing ethanolic solutions of

1

1,2 

3

3

K. NOMURA , C. BARRERO , K. KUWANO , Y. YAMADA , J.
4

4

4

5

SAKUMA , M. TAKAHASHI , T. SAITO , E. KUZMAN AND A.

alkyl ammonium salt, and anhydrous FeCl2 in 2:1 molar ratios.
The single-crystal X-ray analysis reveals that the asymmetric unit of

OOKI1[C3A]2FeCl4 (C3A = n-propyl ammonium chloride) consist of a FeCl6

1Univ. Tokyo, 2Antioquia Univ., 3Tokyo Univ. Sci., 4Toho Univ.,octahedra and two amine ligands

5

Etoves Lorand Univ.

We have succeeded in synthesizing a new family of layered

We have studied the effect of the simultaneous Fe and Sb doping onorganic-inorganic hybrid weak ferromagnets with a ferro or

the magnetic and crystallographic properties in SnO2 nanocrystals. The

antiferro-electric behavior. All of these compounds form plate likesamples, prepared by a sol-gel method, consisted of rutile type SnO2 andtransparent, yellow-orange colored single crystalline products, and havewere free of any impurity phase.

119

57

Sn-, Fe-, and

121

4+

3+

5+

spectroscopies demonstrate that Sn , Fe

Sb-Mössbauer

and Sbthus imparting added advantage for magneto-optical behavior.

are the only

oxidation states for these ions in the SnO2 structure. For most samples,

1B13

the presence of antimony did not improve Ms, but for Sn0.85Sb0.05Fe0.1O2- ,complexes bridged by 1,3-bis(4-pyridyl)propane

this value was increased up to 14 times. This sample exhibited a

NAKASHIMA, S.,1 ATSUCHI, M.,2 INOUE, K.2

magnetic sextet in its 57Fe Mössbauer spectrum in addition to two(N-BARD, Hiroshima Univ.,1 Grad. School Sci., Hiroshima Univ.2)

δdoublets. For the restricted Sb/Fe ratio, the magnetic ordering of the iron

Mössbauer spectroscopic study of the assembled iron

Assembled

complex,

Fe(NCBH3)2(bpp)2

(bpp

=

ions can be activated. The origin of the magnetic interactions is due to

1,3-bis(4-pyridyl)propane) has novel 2D interpenetrated structure andthe existence of exchange interactions between the iron ions mediated byshows spin-crossover phenomenon.

free-carriers in an impurity band. The free carriers increase by doping

inclusion complex, Fe(NCBH3)2(bpp)2 2(benzene) by changing solvent

Sb5+ into SnO2.

and examined the spin state by using Mössbauer spectroscopy.

We synthesized assembled

Fe(NCBH3)2(bpp)2 2(benzene) showed temperature-independent Fe(II)1B11 Electric Conductivity and Mössbauer Spectra of Vanadatehigh-spin state. The guest molecule was partially released by standing

Glass

it at room temperature. The spin state changed depending on the ratio

YASUMITSU, H., MATSUI, R., KURIMOTO, H., NISHIDA, T.

of the release. The guest-free Fe(NCBH3)2(bpp)2 was obtained bya( Graduate School of Advanced Technology, Kinki Univ.,

heating the sample at 120 °C. This had the similar structure with 2Dbinterpenetrated one and showed spin-crossover phenomenon.

a

a

a

a,b

Humanity-Oriented Science and Engineering, Kinki Univ.)

The

Electrically conductive vanadate glass (NTA glass ) developed byguest-free Fe(NCBH3)2(bpp)2 included benzene molecule again by

Nishida et al. has several applications in the field of electronics, sensor,

dipping it into benzene. The change of spin state was also supported

MEMS, et al. Mössbauer Spectra of NTA glassTM indicate that local

by the magnetic susceptibility measurements.

TM

distortion of FeO4 and VO4 tetrahedra, which play a role of network

1P01 Observation of Etch Pit Shape in CR-39 with Atomic Forcedetector and double wire planes a the stop detector whose principle ofMicroscope for the Samples Irradiated with 250 MeV C-12 ionsoperation is similar to a parallel plate avaranche counter. We will test thisSUZUKI, D., ARAI, M., YOKOYAMA, A.

for detemining the best condition at the various conditions.

(Graduate School of Natural Science and Technology, Kanazawa Univ.)
In this study, we aim to acquire the acquisition of standard data of the

1P04 Development of a gas-jet transport system for precision

relation between an incident particle and its etch pit shape for particle

measurement of the half-life of 90mNb

identification with a solid-state track detector. The irradiation experiment

KIKUNAGA, H.,a KASAMATSU, Y.,b HABA, H.,a KAJI, D.,a12

of C ion was done within the energy range from 66 to 250 MeV at the

MORIMOTO, K.,a SAKAMOTO, I.a,c

Wakasawan energy research center. The irradiated sample was etched(aRIKEN, bJAEA, cSci. Serv., Co. Ltd.)for 15 minutes with 6M NaOH solution, and the generated etch pit was

The goal of our study is to clarify the relationship between decay

observed with an atomic force microscope. The depth of etch pit and theconstants of 90mNb and its chemical structure. In order to precisely

dimension of the opening were examined in relation to the incident

determine the short half-lives of 90mNb in various chemical states, webeam energy. The depth of a etch pit became deep as the beam energy

have developed a gas-jet transport system on the beam line of theincreases. And, its opening become small as energy increases.

RIKEN K70 AVF cyclotron. Niobium-90m was produced in the nuclear
reaction natZr(p, xn)90mNb. The reaction products recoiling out from the

1P02

Study on the reversed phase chromatography in trace

concentration for solution chemistry of transactinide elementsab

NANRI, T., ARAKI, M.,atarget were stopped in the helium gas, attached to KCl aerosol particles,
and were continuously transported to a dissolution apparatus. They werec

SUZUKI, D., KINOSHITA, N.,dissolved in 20 M HF and were subjected to γ-ray spectrometry with a

KIKUNAGA, H.,d HABA, H.,d YOKOYAMA, A.a

HP-Ge semiconductor detector. The half-lives of 90mNb were determined(aGrad. School Nat. Sci. Tech., Kanazawa Univ., bFac. Sci., Kanazawa

by the reference source method using 137Cs as a reference source. It was

Univ., cKEK, dRIKEN)

found that no serious background was observed in the gamma-ray

In order to research on the solution chemistry of transactinide
elements such as rutherfordium, we measured distribution coefficients

spectrum for determination of the half-life of 90mNb. The obtained
half-lives will be reported at the presentation.

(Kd) of its homologues, Zr and Hf by a batch method and a microcolumn
experiment in reversed phase chromatography. In the experiments, we

1P05

utilize the resin containing tributyl phosphate for extraction solvent. The

redox reaction of heavy elements

batch method was applied to the measurement by using tracers 88Zr and

OOE, K., TASHIRO, Y., YOSHIMURA, T., TAKAHASHI, N., SATO,

175

W., SHINOHARA, A.

Hf. The microcolumn experiment was on-line measurement by using85

Zr and169

Hf. The results show that the measured Kd values are larger

Development of microchannel-microelectrode chip for(Osaka univ.)

than the macroscale literature data, but they have similar tendency as

For the redox reaction of heavy elements, we developed afunctions of the acid concentration of HCl. Measured Kd values by batch

microchannel-microelectrode chip which is a microchip integrated withmethod agree with those by microcolumn experiment. It was concluded

electrodes. The microchannel-microelectrode chip was fabricated bythat we could apply this method to Rf experiments and compare Kd

photolithography

values of Rf with those of Zr and Hf.

microchannel-microelectrode chip was composed of channel andandawet-etching

method.

Theelectrode substrates. Polydimethylsiloxane (PDMS) was used for the
1P03

Development of timing and kinetic energy detector forchannel substrate, and a glass for the electrode substrate. The length,measuring atomic number of fission fragments

width and depth of a microchannel in the channel substrate were 56 mm,

1

1 mm and about 20 µm, respectively. The vacuum deposited Au

KAWASAKI, T., 1GOTO, S., 1KUDO, H., 2KAJI, D., 2MORIMOTO,
2

K., OHNISHI, T.
1

2( Niigata Univ., RIKEN)
In order to investigate the mechanism of asymmetric mass division in
low energy fission of actinides, we intend to measure an atomic number

electrodes were used for working (47 mm in length) and counterelectrodes. The Ag wire inserted into the microchannel was used forreference electrode. The efficiency of redox reaction of 139Ce wasmeasured for simulation of the redox reaction of No (element 102).

(Z) of a fission fragment (FF) together with in mass number (A) and total
kinetic energy (TKE). For this purpose, a detector system consisted of a

1P06

Magnetic properties and nano-structure of amorphoustime of flight (TOF) spectrometer and a grided multi-anode ionization

IZO thin film doped with Fe

chamber has been debeloped. Z separation is based on the difference in a

NOMURA Kiyoshi1; SUZUKI Yousuke2; YAJIMA Tatsuhiko2;

stoping power (dE/dx) of FF. The TOF spectrometer consists of a micro

YAMADA Yasuhiro3; HIROSE,Yasushi4

channel plate detector with an electrostatic mirror for a start timig

1Univ. Tokyo, 2Saitama Inst. of Tech., 3Tokyo Univ. Sci.., 4KASTThe mixed powder of indium oxide and zinc oxide doped with 57Fe

Univ.)

was prepared by a sol-gel method. The thin films were prepared by

A parent PAC probe of 111Ag, which has a half life of 7.45d waslaser-ablation of the pellet of this powder under various conditions of air

introduced to TDPAC measurements in order to seek a better conditionpressure and substrate temperature. Kerr effect were strongly observed

for biomolecular study. The parent nuclei 111Ag were obtained byfor the sample prepared under 10-6 torr at RT and annealed at 400oC for 1

irradiating a metal foil of Pd of natural abundance with thermal neutrons.

hour. The film were characterized by 57Fe DCEMS using a backThe nuclei were produced via the 110Pd(n, γ)111Pd reaction and thescattered type of a gas proportional counter. It is found that α-Fe andfollowing β decay of 111Pd (T1/2 = 23.4 min). Therefore the irradiatedFe(III) species were produced from Fe(II) by post-annealing.

metal was let stand for 5 days for growth of the products of interest and−disintegration of the by-products. Then, it was dissolved for preparation of
1P07 Nano structure analysis of Fe doped Indium Tin Oxide

the tracer solutions of 111Ag through chemical separation. Complex(ITO)

samples were prepared with the solution and subject to PAC
1

2

NOMURA,K.,

3

SAKUMA,J.,
2

3

KUWANO,K.,

YAMADA,Y.,

1

measurements. The electric field gradient values obtained from the

TAKAHASHI,M., OHKI,T.

TDPAC spectra demonstrate that the data shows characteristics of the(1Tokyo Univ.,2Toho Univ.,3Tokyo Univ. of Sci.)

field, from which we could obtain useful information on the metal site.

Powder of Indium oxides doped with various ratios of Sn and Fe ion
was prepared by a sol-gel method, and annealed at 500oC for 2 hours.

1P10 Muonium in calcium phosphate

The magnetic properties and nano structure of these oxides were

KUBO, M. K.,a KAKUYAMA,TY.,a WATANABE, I.b, NISHIYAMA,

characterized by VSM, XRD and Mössbauer spectrometry. XRD

K.

pattern showed that the powder is like In2O3 cubic structure. The(aICU, bRIKEN, cKEK)

samples of In91Sn6Fe3 and In85Sn9Fe6 showed weak ferromagnetic and

An ESR study showed that calcium phosphate (TCP) kept a stableparamagnetic susceptibility, and the others showed only paramagnetic

neutral hydrogen atom between two phosphate units for several months

one. In Mössbauer spectra, two peaks of doublets and magnetic

at room temperature after irradiating TCP by X-ray. This hydrogenrelaxation peaks were observed. The relation between content ratio of Sn

was supposed to be generated by the combination of an electron

and Fe ions and magnetic properties are discussed.

produced by the X-ray irradiation and the remnant hydrogen ion
incorporated during the preparation procedure of TCP from aqueous

1P08 Investigation of initial process in negative pion capture bysolutions. MuSR is capable of obtaining the information about neutral

measuring pionic X-ray intensitieshydrogen and hydrogen ion sensitively because the muon is considered

a

a

a

NAKAGAKI, R., NINOMIYA, K., SUGIURA, H., NAKATSUKA,
a

a

a

b

B

as a lighter proton. By using the muon one can investigate the behavior

T., SATO, W., YOSHIMURA, T., MATSUMURA, H., MIURA, T.,of hydrogen in TCP without X-ray irradiation. We performed a MuSRSHINOHARA, A.,ameasurement of TCP with a DC beam at PSI and obtained a clearamuonium precession signal which confirmed the formation of neutralb( Osaka Univ., KEK.)
Our group has been investigating the electronic structure of pionic atommuonium in TCP. The spin relaxation rate of the muonium in TCP

by measuring the electronic X-ray energies. The energies of electronic

was fast and the signal almost disappeared after 0.2 microseconds from

X-rays are also influenced by the atomic state of the pion. To

the muon stop in TCP. The muonium yield did now show any

quantitatively discuss these effects we have examined the initial process insignificant temperature dependence from 293K to 5K.

negative pion capture. We

measured the intensity patterns of pionic

X-rays from the target of various chemical forms ranging from Z=29 to

1P11 Temperature dependence of neutron in-beam Mössbauer

92. We also calculated X-ray fine structures from cascade code byspectrum of iron disulfide

providing various conditions for initial states. In this paper we compare

KUBO, M. K.,a TSURUOKA, Y.,a KOBAYASHI, Y.,b YAMADA, Y.,cthe experimental values with the calculated ones and discuss the chemical

SHOJI, H., d SATO, W., e TAKAYAMA, T., f SAKAI, Y., f WATANABE,

effects on the initial state of the captured pion.

Y.,f,h, SEGAWA, M., g MATSUE, H.,g SHINOHARA, A.e(aICU, bRIKEN, cTokyo Univ. Sci., dTokyo Metro. U., eOsaka U., fDaido

1P09 Measurement of hyperfine field in metal complexes andmavicyanin by PAC method using 111Ag probeaaInst. Tech., gJAEA, hSaint-Gobain)
A neutron in-beam Mössbauer spectroscopy measurement system atba

YAMAZAKI, I., IHARA, K., KINOSHITA, N., KATAOKA, K.,

liquid nitrogen temperature has been developed in order to investigate

YOKOYAMA, A.,a MURAKAMI, Y.,c SATO, W.,d OHKUBO, Y.e

the chemical and physical change caused by the gamma-cascadea( Fac. Sci and Grad. School Nat. Sci. Tech., Kanazawa Univ., KEK,

immediately after the thermal neutron capture reaction 56Fe(n,cgamma)57Fe at the PGA beam port of the JRR-3 reactor at the Tokai

b

d

e

JAEA, Grad. School Sci., Osaka Univ., Res. Reactor Inst., Kyoto

Research Center of JAEA. A cryostat with thin Mylar beam windows,
an aluminum foil sample mount on an 4N aluminum cold finger

1P14 Mössbauer resonance absorption on FePSe3 single crystal

attached to cryohead, an improved S/N Mössbauer spectrum was

NAKAGAMI, K., 1 NAGATA, K., 1 MURAMATSU H., 2 GHEYSEN,

obtained for an iron disulfide (marcasite type crystal structure) sample

S., 3for the first time at 78K. There were two main doublet components(1Grad. School of Edu., Shinshu Univ., 2Fac. of Edu., Shinshu Univ., 3IKS,

observed as was seen at room temperature.

Katholieke Universiteit Leuven)
We have already reported the first steps towards a proof-of-principle

1P12 Mossbauer analysis of corrosion products of iron in aqueous

experiment, demonstrating electromagnetically induced transparency

solutions(EIT) with gamma radiation for the Mössbauer effect in the mineral

OGISO, R., SAKAI, Y., TAKAYAMA, T.

siderite FeCO3 using the level-crossing technique. We have tried to(Daido Inst. Tech.)seek other candidates for absorbers possible to use in the same type ofChemical characterization of corrosion products of iron has been so far

experiment. The first candidate we had already tried was the single

studied extensively from the industrial and environmental viewpoints,

crystal of FePS3, whose internal-magnetic-field strength was not enoughwhich has not been clarified completely, especially the corrosion

to make the absorption lines of (-3/2 ↔ -1/2) and (1/2 ↔ -1/2) merge

processes in aqueous solutions. In the present work, Mossbauer analysis

into one single line, in order to observe EIT. Recently, we have

was performed for corrosion products of iron in aqueous solutions. We

succeeded to synthesize the single crystal of FePSe3 using a solid phase

reported previously and preliminarily the Mossbauer characterization ofreaction method. A series of Mössbauer measurements at thecorrosion of iron in a fiber state (called “steel wool”) immersed intemperatures ranging from R.T. to 30K using the FePSe3 single-crystal

aqueous solutions, revealing that the utilization of steel wool was very

absorber thus obtained indicates some possibility to demonstrate EIT as

effective to investigate the in-situ corrosion process in the solutions.

a proof-of-principle experiment.

However, it was also shown that such a method was not so adequate forthe initial corrosion stage in aqueous solution system. Here, in order to

1P15

Electric Conductivity and Mössbauer Spectra of New

obtain much clearer understanding, we tried to do Mossbauer

Cathode Material for Lithium Ion Battery

measurements for the products in aqueous solution drops on metallic

MATSUI, R.,a WASEDA, T.,b OKADA, S.,c YAMAKI, J.,c NISHIDA,

iron plate, which allowed us to obtain the products at a relatively initial

T.astage. The Mossbauer data were analyzed as well as those for our(aGraduate

previous Mossbauer results on steel wool.

b

SchoolofAdvanced

Technology,

Kinki

Univ.,

Interdisciplinary Graduate School of Engineering Sciences, Kyushu

Univ., cInstitute for Materials Chemistry and Engineering, Kyushu
1P13 Mössbauer spectroscopy of nanowires produced in carbon
nanotubes

Univ.)New cathode material for lithium ion battery, LiFeVPOx glass,

1

2

2

3

NAGATA, K., MURAMATSU, H., TAJIMA, C., KIM, Y. A.,
3

developed by Nishida et al. has attracted much interest. A part of iron in

ENDO, M.,

LiFeVPOx glass was replaced by cobalt in order to increase the battery(1Grad. School of Edu., Shinshu Univ., 2Fac. of Edu., Shinshu Univ.,

voltage since cobalt has higher cell potential than iron. Composition of

3

Fac. of Eng., Shinshu Univ.)

the new cathode material studied here is expressed by: LiFe0.5Co0.5VPOx

When composing multiwalled carbon nanotubes (MWCNTs), Fe

and LiFe0.25Co0.75VPOx, in which a marked increase was observed in the

nanowires, which may be considered as magnetic nanowires

discharge capacity especially in the region of less than 2V. Mössbauer

encapsulated in carbon nanotubes, have been found in thin carbon shells

spectra of these samples consist of quadrupole doublet due to high spin

under a certain production condition.

In order to detect and

FeIII irrespective of the heat treatment at 500 oC, which results in acharacterize nanowires, the transmission Mössbauer measurements weresystematic decrease of the quadrupole splitting (Δ), reflecting a structural

carried out on four different Fe-filled MWCNT samples: A; tt25rrt

relaxation of the glass network. Heat treatment of these glasses causes a(weight percent of ferrocene as precursor: 5wt%, preparation

marked increase in the electric conductivity and that of the discharge

temperature: 800 ), B; tt28rrt (3wt%, 800 ), C; tt30rrt (10wt%,

capacity of Li-ion battery.

800 ), D; tt31rrt (3wt%, 750 ). These samples of MWCNTs are
purified by applying high temperature treatment, but the Fe nanowires

1P16 Mössbauer Spectra of Li2O-2FeO-V2O5-P2O5 Glass as aremain inside MWCNTs. The results obtained from spectral analyses

New Cathode Material for Lithium-ion Battery

indicate that Fe phases encapsulated within the MWCNTs comprise

KURIMOTO, H.,1 WASEDA, T.,2 OKADA, S.,3 YAMAKI, J.,3

α-Fe, iron oxides, and iron carbides, showing magnetically splitting

NISHIDA, T.1

peaks.

(1School of Humanity-Oriented Science and Engineering, Kinki Univ.,

2Interdisciplinary Graduate School of Engineering Sciences, Kyushu

ion-exchange method from the irradiated 64NiO target. The 64Cu was

Univ., 3Institute for Materials Chemistry and Engineering, Kyushu

obtained with high yield (89%) and high radionuclidic-purity 64Cu (>Univ.)

99%). The target material 64NiO was recovered in good yield (> 99%).

Among well-known 4.0 V cathode material for lithium-ion battery,The 64Cu was added to a plant (soybean) for an imaging experiment and

LiCoO2, LiNiO2 and LiMn2O4 are now used commercially.

the movement of 64Cu was visualized by the PETIS. This result shows

Olivine-type LiFePO4 crystal has attracted much interest as a newthat 64Cu can be applied as a useful tracer for not only medicalcathode material for lithium-ion battery because of its high theoreticalapplications and also plant physiological studies.

capacity (170 mAh/g; operating potential 3.4 V) and because iron is less
Production of 76Br PET-radionuclide and 76Br-labeled

toxic and less expensive than Co and Ni. In this study, Mössbauer

1P19

spectra of xLi2O-2FeO-V2O5-P2O5 (x=0, 0.5, 1 and 1.5) glasses are

antibody for PET imaging of cancer diagnosis

measured for determining the local structure and the occupancy of the

ISHIOKA, N.S.,a IIDA, Y.,b,c WATANABE, SH.,a YOSHIOKA, H.,b

FeIII sites. For comparison, Mössbauer spectra were measured on

HANAOKA, H.,b SUZUI, N.,a MATSUHASHI, S.,a ENDO, K.,c,dxNa2O-2FeO-V2O5-P2O5 (x=0, 0.5, 1, and 1.5) glasses.

(aQuBS, JAEA, bGunma Univ. Grad. School Med., c21st Century COE
Program)76

Br is of potential interest in nuclear medicine: 76Br has been

1P17 Mössbauer study of Fe-substituted layered oxide Li2MnO3
1

2

3

1

MORIMOTO, S. , IKEDA, Y. , TABUCHI, M. , KAWASE, M. ,suggested as a halogen label with a convenient half-life (T1/2 = 16.1 h)

SAITO, T.4

and a sufficient β-branching ratio (57.2%) in PET. In this study we
1

2

3(Osaka-Ohtani Univ. , Grad. Sch. Sci., Osaka Univ. , AIST , RIRC,
4

present the development of 76Br production and the synthesis ofmonoclonal antibody (mAb) labeled with 76Br and evaluated the

Osaka Univ. )Fe-substituted layered oxide Li2MnO3 has a layered rock-salt structure

potential for tumor diagnosis with PET. 76Br was produced from the(α-NaFeO2 type structure). Because of the "layered" structure Fe-doped

76

Se(p,n)76Br and the 79Br(p,4n)76Kr (T1/2: 4.6 h)→76Br reactions. The

Li2MnO3 has been paid much attention for cathode materials oftargets were used SeO2 and KBr of the natural isotope composition,

lithium-ion batteries. This series of Fe-substituted Li2MnO3 contains an

respectively. After radiochemical separation, direct bromination has been

excess of Li thus the valence of transition metal cation is potentiallyapplied for 76Br labeling of NuB2. The production yields were found tohigher than three. In this study, Fe-substituted Li2MnO3 withbe 21-24 kBq/µA min with SeO2 target and 126 MBq/µA min with

Fe/(Fe+Mn) = 0.3 of good crystalline quality are used to investigate the

NaBr target (EOB). The results of tumor localization studies show thatvalence state of Fe by means of Mössbauer spectroscopy. Mössbauer

76

spectrum at low temperature (5 K) consisted of two sextet withthe use of 76Br has great advantage for PET utility.

Br labeled mAb was highly accumulated to tumor. From these data,

distribution of hyperfine fields and one doublet. The sextet with average
hyperfine field of 46 T was assigned to Fe3+ state and that with 14 T was
4+

1P20 Oxidative stress by Se-deficiency and trace elements in cell

assigned to Fe one. Note that hyperfine field of 14 T is similar to thatfractions of rat liver

reported for Sr0.5La1.5Li0.5Fe0.5O4. The doublet had a relatively small

SAKUMA, Y., a NAGAYAMA, A., a MATSUOKA, K., a HONDA, C.,isomer shift of -0.6 mm/s thus it corresponded to the valence state ofaFe5+ or higher. The effect of anneal condition on iron valence state will(a Showa Pharmaceutical Univ., bNational. Inst. Rad. Sci.)

be discussed.

MATSUMOTO, K., b ENDO, K. a
Contents of Mn, Co, Fe, Cu, Zn, and Se in the liver cell fractions of

8-week old Se-deficient Wister female and male rats were determined by64

1P18 Production of Cu as a biotracer and applications to in vivo

INAA. Selenium (Se) levels in every four cell fraction of SeD group

imaging of 64Cu in a plant

were found to lower than those in Se-control (SeC) group in both female

1

1

2

WATANABE, SH. , ISHIOKA, N. S. , KATABUCHI, T. ,1

1

1

WATANABE, SA. , SUZUI, N. , ISHII, S. , MATSUHASHI, S.

1

and male rats. However, Se level of each cell fraction in SeD group was
higher in female rats than in male rats. Fe levels were found to be the(1QuBS, JAEA, 2Tokyo Inst. Tech.)highest in the MC fraction both for female and male groups, were64

Positron emitter, Cu has been used in medical applications withsecondly highest in mitochondria (MT) fraction for both sex groups, andpositron emission tomography (PET). We have developed a novel

thirdly in nucleus (Nu) fraction. In every four cell fractions, the Fe levels

6464

method in Cu production to obtain Cu-labelled antibodies as a PET
64

were higher in SeD group than in SeC group for both sexes. The results

reagent. On the other hand, Cu can be used for in vivo imaging ofare presented in connection with the antioxidant enzyme activities,

copper in a “living” plant by positron emitting tracer imaging system

antioxidant contents in liver homogenates.

(PETIS). Production of64

Cu was carried out via thenuclear reaction. The produced

64

64

64

Ni(p,n) Cu

Cu (330 MBq) was purified by an

1P21

Treatment for bone metastasis by using alpha-emitting

radiopharmaceutical, 227Th-EDTMP.
1

2

application, fourteen seawater samples (50 L) were collected from a
1

WASHIYAMA, K., OGAWA, K., AMANO, R., MITSUGASHIRA,
3T., KINUYA, S.,

1water column within the Sea of Japan (3700 m depth; N41o01’;
E138o01’) during the 5th Soyo Maru expedition (1 Leg; 16-26 July,(1Grad. School Med. Sci., Kanazawa Univ., 2Advanced Science2007). To determine short-lived 234Th (t1/2 = 24.1 d) and 7Be (t1/2 = 53 d),

Research Center, Kanazawa Univ., 3The Oarai-branch, Inst. Materials

many of coprecipitation treatments were carried out on a research vessel.

Res., Tohoku Univ.)

From vertical profiles of 7Be, 137Cs, 210Pb, 226Ra, 228Ra, 228Th and 234Th

An alpha particle emitting radionuclide is promising for treatment ofbone metastasis. Thorium-227 (t1/2 = 18.72 d) is one of the promising

activities, we assess geochemical cycles in marine environments within
the Sea of Japan.

α-emitting nuclide due to the high LET and short path length of alphaparticles. In order to evaluate the efficacy of 227Th, we started the

1P24 Measurements of multi-radionuclides in seawater samples

preclinical therapeutic study of bone metastasis using a bone seeking

from the Sea of Japan by applying low-background γ-spectrometry

radiopharmaceutical,

227

Th-EDTMP.

Seven-week-old

femaleand their implications

Sprague-Dawley rats were inoculated syngeneic MRMT-1 mammary

NAKANO, Y.,a INOUE, M.,a MINAKAWA, M.,b KOMURA, K.atumor cells into the left tibia. Three weeks after cell inoculation, rats were(aK-INET, Kanazawa Univ., bNatl. Res. Inst. Fish. Sci.)

injected 250 kBq/kg b.w. of 227Th-EDTMP intravenously. To evaluate

In the current study, a coprecipitation method was employed bytherapeutic and pain palliation effects, tumor size measurement and vonadding Ba, Fe, Pb, Be carriers and ammonium phosphomolybdate

Fly filament test were applied. Toxic effect was also monitored by blood(AMP) to seawater samples, and 7Be, 210Pb, 226Ra, 228Ra, 228Th, 234Th

cells counting. 227Th-EDTMP injected rats showed bone pain palliationand 137Cs were isolated together with BaSO4, Fe(OH)3 or AMP. By

compared to control groups. There also showed therapeutic effects for

applying low-background γ-spectrometry, all of these nuclides were

inhibition of tumor proliferation. On the other hand, toxic effect was notdetected using a small volume of seawater samples (20 L). As a practicalshown. These results show

that

227

Th-EDTMP is able to use forapplication, fourteen seawater samples (50 L) were collected from awater column within the Sea of Japan (3700 m depth; N41o01’;

treatment of bone metastasis.

E138o01’) during the 5th Soyo Maru expedition (1 Leg; 16-26 July,
1P22 Study of the PZC 188W/188Re generator and of the synthesis
condition of

186/ 188

Re-DMSA

2007). To determine short-lived 234Th (t1/2 = 24.1 d) and 7Be (t1/2 = 53 d),many of coprecipitation treatments were carried out on a research vessel.

NOGAWA, N., IKEDA, K., MORIKAWA, N., MOTOISHI, S.,

From vertical profiles of 7Be, 137Cs, 210Pb, 226Ra, 228Ra, 228Th and 234Th

MATSUOKA, H., HASHIMOTO, K.

activities, we assess geochemical cycles in marine environments within

Rhenium-186 (T1/2, 90h; Eβ, 1.1 MeV; Eγ, 137 keV) and rhenium-188

the Sea of Japan.

-(T1/2, 17h; Eβ, 2.1 MeV; Eγ, 153 keV) are β particle emitting
radionuclides with excellent properties for targeted radiotherapy. Re-188

1P25

239,240

Pu in the water columns of the Eastern Pacific1

has the advantages associated with carrier-free, generator-produced

SUMI, T. , KINOSHITA, N.2, YOKOYAMA, A.1, NAKANISHI, T.1

radionuclides. PZC generator with many tungsten molecules is expected(1Grad. School Nat. Sci. Tech., Kanazawa Univ., 2KEK)

for as practical generator. This generator was experimented for clarifying

The ocean, by virtue of its large surface area, has received a majora characteristic. Meso-2,3-dimercaptosuccinic acid (DMSA) is appliedshare of the fallout Pu. With the aim of understanding the sinking

for palliative treatment of pain associated with disease. Effect of pH isbehavior of Pu in water column, depth distributions of 239,240Pu, 238Pu

studied on preparation of 186/ 188Re-DMSA.

were measured in water columns of the Eastern Pacific. It was found that239,240

Pu concentration increased from surface to 600 m and showed low

1P23 Measurements of multi-radionuclides in seawater samples

concentration from 1000 m to the bottom. 238Pu was clealy detected infrom the Sea of Japan by applying low-background γ-spectrometry

the southern hemisphere of the Eastern Pacific. 238Pu in the southern

and their implications

hemisphere is attributable to the SNAP-9A accident in 1964.

NAKANO, Y.,a INOUE, M.,a MINAKAWA, M.,b KOMURA, K.a(aK-INET, Kanazawa Univ., bNatl. Res. Inst. Fish. Sci.)
In the current study, a coprecipitation method was employed by

1P26

The concentrations of radionuclides in groundwater

samples after the Noto Peninsula Earthquake 2007

adding Ba, Fe, Pb, Be carriers and ammonium phosphomolybdate

YAMADA, N.1, UESUGI, M.1, SHIMIZU, T.2, YOKOYAMA, A.1,

(AMP) to seawater samples, and 7Be, 210Pb, 226Ra, 228Ra, 228Th, 234Th

NAKANISHI, T.1

and

137

Cs were isolated together with BaSO4, Fe(OH)3 or AMP. By

applying low-background γ-spectrometry, all of these nuclides weredetected using a small volume of seawater samples (20 L). As a practical(1Grad. School Nat. Sci. Tech., Kanazawa Univ., 2Fac. Sci., Kanazawa
Univ.)A ruinous earthquake (M 6.9) struck Noto Peninsula on 25 March

2007. It has been known these about 40 years that there is some

MATSUZAKI2, YOSHIMI SUZUKI1, HIROSHI IWATA1, SHOUGO

correlation between earthquake and the change of radionuclides

AKUTSU1

concentration in groundwater and surface-air. In the present study,(1Shizuoka Univ. 2Univ. of Tokyo )groundwater samples were obtained every month after the earthquake
near the earthquake center to analyze U and Th isotopes,

226

Ra and210

Po.

We examined an analytical procedure for accurate determination of
14

C concentrations in elemental carbon (EC) of an aerosol in the

The results are as follows: (1) 238U and 234U concentrations (0.13 0.23

atmosphere. When carbon dioxide released by a combustion of EC is

mBq L 1) and 234U/238U activity ratio ( 1) showed only slight change

converted to graphite for 14C measurement with accelerator mass

during 3 months after the earthquake, but (2)210

Po concentration

spectrometry (AMS), sulfur, nitrogen and halogens co-released impede

decreased from 3.24 mBq L 1 to 0.60 mBq L 1 during 1 month after thethe conversion to graphite. We examined an appropriate condition forearthquake. These results suggest that the flow pass of groundwater was

effective formation of graphite on metallic Fe powder. We used Ag wire

not changed largely on the earthquake, but considerable amount of 222Rn

and Sulfix○ for removing halogens and sulfur oxides and also used a

dissolved in ground water system.

reduced copper metal for reduction of nitrogen oxides to nitrogen gas.

R

During the preparation of graphite conversion using Sulfix in order to
1P27

230

Th/238U and 226Ra/230Th activity ratios in rhyolite from Izu

purification of released gas from EC, we observed large fractionationarc volcanoes

effect on Δ14C and δ C values,rather than the normal mass-dependent

TAKAHASHI, M., KURIBARA Y., SATO, J.,isotopic fractionation effect.

13(Meiji Univ.)
Observation was made with rhyolitic volcanic rocks erupted from

1P30

Measurement of exposure age by determination of

Kozu-shima and Niijima on Izu arc for activity ratios of 230Th/238U andsecondary cosmic-ray-induced 26Al and 10Be.

226

HOJO, K.,a SEKIMOTO, S.,b TAKAMIYA, K.,b OKI, Y.,b SHIBATA,

to 1.04, respectively.

S.,b SASAKI, T.,a MATSUZAKI, H.,c KIM, S. H.,d MOON, J. H.,dRa/230Th. The activity ratios ranged from 0.97 to 1.18 and from 0.71

CHUNG, Y. S.,d MAHARA, Y.b
1P28 Radiocarbon analysis in tree rings of Yaku-cedar by AMS(aSchool of Eng., Kyoto Univ.,b Res. Reactor Inst., Kyoto Univ., cSchoolfor investigating secular variation of atmospheric 14C/12C ratiosof Eng., Univ. of Tokyo., dKorea Atomic Energy Res. Inst.)

UENO,

1

H.,

MURAMATSU,

1Y.,

MATSUZAKI,

2

H.,Secondary cosmic-ray-induced 26Al and 10Be in terrestrial quartz were

TSUCHIYA(SUNOHARA), Y. 2

measured by accelerator mass spectrometry (AMS) after chemical(1Gakushuin University, 2University of Tokyo)

separation and neutron activation analysis. Preliminary results of these

Atmospheric radiocarbon is produced in the stratosphere by cosmic
14

14

14

nuclide concentrations were obtained. From the depth profiles of

26

Al

10

ray reaction with nitrogen ( N(n,p) C). The produced C is oxidized

and Be, long-term erosion rates of inland peneplain which consists ofimmediately to form 14CO2 and enters into the carbon cycle in theweathering granitic soil in northern Abukuma Plateau, Japan areatmosphere. Then it is absorbed into plants through photosynthesis.

discussed.

14

12

Therefore, by measuring C/ C ratio in tree rings, it is possible to obtain
information on the secular change of cosmic ray intensity. In this study,
14

1P31 Development of key technologies for safety treatment of

we have determined Δ C values in a long-lived Japanese cedar tree

tritium in NIFS

(Yaku cedar) by Accelerator Mass Spectrometry (AMS).

ASAKURA, Y., TANAKA, M., KAWANO, T., UDA, T.

14

12

We could measure C/ C ratio using small sample size (about 20mg

(NIFS)

of wood sample) with a sufficient accuracy (3~5‰) by AMS. Our data

Deuterium plasma experiments are currently being planned for theshows a similar pattern to IntCal04 which is an age calibration curve

Large Helical Device (LHD) of the National Institute for Fusion Science

database constructed by the European and American samples. But some

(NIFS), following the present hydrogen plasma experiments. Under the14

differences of Δ C value relative to IntCal04 were observed around

deuterium experiment conditions, tritium will be generated in the LHD

600-700 A.D. These differences might be a characteristic variation inplasma vacuum vessel. In order to realize the safety management of theJapan. Maximal value observed around 700 A.D. might be related to thetritium, we are planning to realize the following specific methods, one is

Manyo cold period (around 620-740 A.D.).

the gaseous tritium recovery system applying a polymer membrane
dehumidifier and the other is the high sensitivity tritium monitor

1P29 Mass-depenndent isotoic fractionation during preparation

applying proton conducting ceramics as the hydrogen pump. The

for 14C dating of elemental carbon for studying the origin of

applicability evaluation results and the prospect of practical use of theatmosphericaerozol

each key technology will be summarized.

HIDEKI1

WADA ,KUNIYOSHI

1

NAKAJIMA ,HIROYUKI

1P32 Fundamental knowledge about radiation and radioactivity

and nuclear-related matters. We study the currently used textbooks ofwhich should be taught as compulsory course at junior or senior

every kind of subjects, scientific and social, and are proposing thehigh schoolsamended description when we find incorrect ones.
a

a,b

,a,c

a

,a

MATSUURA, T., EDA, M., IIRI, Y. KUROKUI, S., HIROI, T.
,a,d

a,e

,a,f

a,g

MIKADO, S. FUNADA, M., YATAGAI, H. WATANABE, T.

(6) Workshop on the reports of mass media about the nuclear-related
matters—watching the incorrect reports in daily newspaper and TV.

(aRadiation Education Forum, bAomori Univ., cKoryoiki Kyoiku
Kenkyuukai, dChiba Univ., eFunabashi S. High School,fBunkyoug

Gakuin High School, Rikkyo Niiza High School )We (Radiation Education Forum) are proposing an improved plan ofeducational curriculum at schools for teaching about radiation and

1P34 Present Status of Enforcement in “Energy, Environment,
and Radiation Seminar”
HASEGAWA, K., MATSUURA, T.,(Radiation Education Forum)

radioactivity to Japanese Government (Ministry of Education, Science,

To serve “Recommendation to Integrated Science and Education” forTechnology, Culture, and Sports). The proposal includes teaching thethe school teachers in primary, junior, and senior high schools, thefollowing items at as an early stage at school as possible:

Seminar has been keeping up with us in 2001. The presentation will

(1) The fundamental nature of radiation and radioactivity, action ofinclude the significance of energy, environment, and radiation in theradiation on human body, and the present status of utilization of radiation

present status of enforcement on this Seminar. It will, moreover, bein various areas,

proposed to the subjects of Seminar for further discussion.

(2) The existence of natural radiation and radioactivity around ourenvironment by students’ own experience or teacher’s demonstration,

2A01 Studies on hot atom chemical behavior of energetic ions inandsolids (XV)

(3) The procedure of avoiding radiation exposure, (a) by taking distance-The oxygen contamination effects on hot atom chemical behavior

from the radiation source to worker, (b) by placing shielding materialof energetic deuterium in boron films-

between the source and worker, and (3) by minimizing the duration of

YOSHIKAWA, A. a, KIKUCHI, Y.a, ISHIKAWA, H.a, SUDA, T.a, OYA,

exposure.

Y.a, ASHIKAWA, N.b, SAGARA, A,b, NODA, N.b, AND OKUNO, K.a(aRad. Res. Lab., Fac. of Sci., Shizuoka Univ., bNIFS)

1P33 Workshop activities at Radiation Education Forum

For boronization technique in D-T fusion devices, it is expected that

MATSUURA, T.,a EDA, M.,a,b , HORIUCHI, K,a,.c KAWAMURA, S.,athe boron films form boron oxide, and energetic tritium is trapped by

KANEKO, M.,a,d TANAKA, R.afilms with the thermal and hot atom chemical processes. In this study,(aRadiation Education Forum, bAomori Univ., cOtsuma Women’s Univ.,boron films with various oxygen concentrations were prepared by thedRadiation Effects Association)

P-CVD, and energetic D2+ were implanted with various implantation“Radiation Education Forum” was established in 1994 in order totemperatures and ion fluence. Thereafter, TDS and XPS measurements

promote the proper education both at school and in society, based onwere performed to evaluate the D retention and chemical behavior in thecorrect scientific facts. The Forum has six workshops. They are:films. From the TDS results, it was found that oxygen in the boron films(1) Workshop on educational curriculum at school—discussing how

formed B-O-D bond and D2O. D2O was observed in QMS spectra

should be the education of energy and environmental problems,(m/e=20) observed during the D2+ implantation. From the dependence ofincluding radiation and nuclear-related matters at school (elementary,implantation temperature, no implantation temperature dependence of D

and junior and senior high schools). The group have presented theretention resulting from the B-O-D bond was observed in the range fromdocuments of proposal for improving the present system to Japanese

RT to 823 K. This result indicated that the formation of B-O-D bond was

Government.

based on the hot atom chemical reaction.

(2) Workshop on experimental tools for radiation education—discussing
experimental methodology for teaching radiation at school

2A02 Study for behavior of tritium adsorption and desorption on(3) Workshop on how to adopt the concept of RISKS—discussing how

the material surface

to teach the risk-benefit analysis and various risks existing in the daily

KOBAYSHI, K.,a HAYSHI, T., a YAMANISHI, T., a OYA, Y., blife at school education

OKUNO, K. b

(4) Workshop on how to understand the health effects of low level(a JAEA / TPL, b Shizuoka Univ.)

radiation. We believe this approach of making the right information

In a fusion reactor of high safety and acceptability, safe confinement

about radiation widespread to the public is the most effective method forof tritium is one of key issues for the fusion reactor. Tritium should be

proliferating the nuclear technology.

well-controlled and not excessively released to the environment and to(5) Workshop on the description in textbooks in schools about radiation

prevent workers from excess exposure. Especially, the hot cell andtritium facilities of ITER will use various construction materials. For
tritium desorption processes, so-called ‘soaking’ effect is important.

2B02 Development of the uranium-enrichment screening method

This effect is based on sorption of tritiated water vapor on the materials

for particles by chemical etching of fission track detector (2)and subsequent desorption from them. Therefore, in order to develop

LEE, C. G., IGUCHI, K., SUZUKI, D., ESAKA, F., MAGARA, M.,

for the optimal desorption technique, the desorption experiment was

SAKURAI, S., SHINOHARA, N., USUDA, S.

carried out as a function of water vapor concentration in the purging gas(JAEA)(N2) for epoxy paint, acrylic resin and butyl rubber, and the mechanism

Safeguards environmental sample analysis has implications on theof sorption between tritiated water vapor and materials was also

examination of the existence of uranium particles with a higher 235U

investigated. As the result, about 70% of the adsorbed tritium on theenrichment in swipe samples. If such uranium particles can be

epoxy paint was removed by adding water vapor in purging gas for 12

preferentially detected in a sample, this will be significant in simplifying

hrs.

the particle analysis in the safeguards environmental samples. In thisThe effect of adding water vapor was found on thedecontamination for epoxy paint.

study, a screening method for uranium particles according to theirenrichment has been developed by using the characteristics of fission

2A03 Investigation of hydrogen isotope behavior on water-metal

tracks (FTs). A two-step filtration system that can collect particles withboundary by using pure tritium

desired diameters was used for the collection of uranium particles from a

a

a

a

a

HAYASHI, T. , NAKAMURA, H . , ISOBE, K. , KOBAYASHI, K. ,swipe sample in order to avoid the influence of the differences in the

YAMANISHI, T. a, SUDA, T. b, OYA, Y. b, OKUNO, K. b

diameter on the etching behavior of FTs. In order to verify the(a: JAEA, b: Shizuoka Univ.)

effectiveness of the developed screening method, a mixed sample

In order to accumulate data on tritium transferred to cooling water of acontaining uranium particles (1 3 µm) with 10% enrichment and thosefusion reactor, a series of experiments of tritium permeation into waterwith natural composition was collected on a polycarbonate membranejacket pressurized to 0.8MPa by He gas was performed through purefilter, from which particle layer was made and irradiated with thermal

iron piping, which contained about 1 kPa of pure tritium gas at 423 K.

neutrons. The FT detector made of polycarbonate was etched with 1M

Chemical forms of tritium permeated into water were monitored

NaOH at 45 . It was shown that the enrichment-based screening of theperiodically under continuous purging water jacket by He.

uranium particles is improved by controlling the etching time to detect

Observation of metal surface was also carried out periodically by SEM

fission tracks and by comparing particle diameters.

and XRD analysis.
The actual tritium permeation rate was about 1/5 level of the

2B03 Sorption of Pu(VI) by the mixture of bacteria and clay

calculated value. Even if surface oxide layer (magnetite, porous & fineOHNUKI, T.a, OZAKI, T. a, KOZAI, N. a, SAKAMOTO, F. a, SUZUKI,

layers) grew in the water boundary, tritium permeation rate to water was

Y. a, YOSHIDA, T. b

not changed drastically. On the other hand, hydrogen gas (HT) fraction(aJAEA, bCRIEPI

of tritium permeated in water jacket decreased drastically with oxide
layer growth.

We investigated the interactions of Pu(VI) with a mixture of Bacillus

Furthermore, permeated species and amounts were notsubtilis and kaolinite clay to determine the role of the microbes inaffected clearly by the dissolved hydrogen in water by purging 1% H2 inregulating the environmental mobility of Pu. The bacteria, the kaolinite,He.

and their mixture were exposed to a 4x10-4 M Pu(VI) solution at pH 5.0.
The amount of Pu sorbed by B. subtilis increased with time, but had not

2B01 Improvements on determination of Pb-210 in lead
1

2

UESUGI, M. , NOGUCHI, M. , NAKANISH, T.

reached equilibrium in 48 h, whereas equilibrium was attained in

1

kaolinite within 8 h. After 48 h, the oxidation state of Pu in the solutions(1Grad. School Nat. Sci. Tech.,Kanazawa Univ.,2JCAC )Since natural lead contains radioactive isotope

exposed to B. subtilis and the mixture had changed to Pu(V), whereas

210

Pb, lead materials

the oxidation state of Pu associated with B. subtilis and the mixture was

has to be selected before constructing shielding box for low level

Pu(IV). In contrast, there was no change in the oxidation state of Pu inradioactivity measurement. In this work, an improved method forthe solution or on kaolinite after exposure to Pu(VI). SEM-EDS analysis

determination of210

Pb is proposed, which is based on radioanalyticalindicated that most of the Pu in the mixture was associated with B.

separation by DDTC-toluene (sodium diethyl dithio carbamate )subtilis. These results suggest that Pu(IV) is preferably sorbed to

extraction and electrodeposition on a stainless steel disk, followed bybacterial cells in the mixture, and that Pu(VI) is reduced to Pu(V) andalpha-ray spectrometry of210

Po and209

Po as a tracer. Contents of

210

Pb in

Pu(IV).

four commercially available lead samples (10-30mg) and an old leadsample (110mg) were analyzed by alpha-ray spectrometry, and were

3A01 Application of optical techniques to phoswich detectors

compared with the results by gamma-ray spectrometry.

composed of ZnS(Ag) for simultaneous counting of radiations

emitted from actinides

to the data matrix which is made by determination values of sediments

USUDA, S., YASUDA, K., SAKURAI, S.

measured by instrumental neutron activation analysis. The results of(Research Group for Analytical Science, JAEA)

PCA represented 3 factor models in each sediment, explaining 58-98%

The authors have developed phoswich detectors with ZnS(Ag) as anof the total variations in the sediments. A comparison of eigenvector ofessential component. The phoswich detectors consist of plural

terrigenous elements loading from PCA indicated the existence of 2

scintillators, which have specific sensitivity for each radiation andsources of supply in sediments. One is Group 1 [SX09 (factor1) anddifferent decay time from each scintillator, and enable us to count

SX18 (factor1)], suggesting continental dust. The other is Group 2simultaneously α, β(γ) rays, thermal and/or fast neutrons emitted, when

[SX16 (factor1) and SX21 (factor2)], suggesting volcanic rock. Variation

pulse shape and/or pulse height discrimination techniques are skillfullyof K/Ti ratio and Eu anomaly (Eu/Eu*) of sediments supported theapplied. In addition, if optical filters are suitably applied to the phoswich

above results.

detectors, discrimination properties are improved. In this presentation,
the authors introduce 1) summary of the rise time properties of

3A04

Separation of An(III) from Ln(III) using a capillary

scintillators and effects of optical techniques such as optical filterselectrophoretic technique

obtained under the almost same conditions, and 2) examples of

MORI, T.,a ISHII, Y., a HAYASHI, K.,a YANAGA, M., a SATOH, I., b

application of optical techniques to improve the discrimination

SUGANUMA, H., acharacteristics of the phoswich detectors.

(aRadiochem Res. Lab., Fac. Sci., Shizuoka Univ., bIMR, Tohoku Univ.)
It was proved that the moving velocity of the chemical species of

3A02 Reliability evaluation of neutron activation analysis

Eu(III) electrophoresed from anode to cathode was larger than that ofof Cr and Co in silicon nitride (NMIJ CRM 8001-a)

Am(III) in the solution containing thiocyanate ion because the positive

a

a

a

a

MIURA, T., KUROIWA, T., NONOSE, N., HIOKI, A., CHIBA, K.,mean charge of thiocyanate complexes of Eu(III) is larger than that ofa

KAMIOKA, H.,b MATSUE, H.c

Am(III). On the basis of the difference between the moving velocities of(aNMIJ-AIST, bGREEN-AIST, cJAEA)NMIJ has been developing the certified reference materials
under the following policies; 1) the traceability to SI unit isdeclared, 2) CRMs are developed under the quality
management system , 3) the quality system is accredited by thethird body, 4) the CRM developing systems and procedures arepeer-reviewed by the international reviewers from other NMIs.
In inorganic analytical chemical fields, ID-ICPMS is now considered asa primary measurement procedure and other atomic spectrochemical
methods are usually used as the reference measurement procedures. In
recent years, Neutron activation analysis is tried to use as a primarymeasurement procedure, so Japan Atomic Energy Agency and NMIJ
started collaborative research program to investigate the feasibility of
NAA to chemical metrology.
In this study, the analytical results of Cr and Co in Si3N4

Eu(III) and Am(III), both in trace concentrations were electrophoresed in

ceramic obtained by NAA were in good agreement with thoseby other analytical methods including ID-ICPMS.

The

measurement uncertainty related to NAA was evaluated.
3A03 Estimation of the source of surface sediments in the pelagicsea by instrumental neutron activation analysis
SHOZUGAWA, K.,1 KUNO, A.,1 SANO, Y.,2 MATSUO, M.1(1Grad. School of Arts and Sci., The Univ. of Tokyo, 2Ocean Res. Inst.,
The Univ. of Tokyo)
Sea sediments consist of the elements brought about from various
sources. We collected core samples from the Antarctic Ocean to theSouth Pacific Ocean in 2004-2005. In order to estimate the source inpelagic sea sediments, principal components analysis (PCA) was applied

the mixed solvent (CH3OH/H2O) solutions of 0.00 ~ 1.00 M NaSCN +0.10 HClO4 using a capillary electrophoretic technique. The results
showed that the Am(III)/Eu(III) separability increased as theconcentration of NaSCN increased. Additionally, it was also
demonstrated that the Am(III)/Eu(III) separability in the mixed solvent
solution was higher than that in the aqueous solution containing the same
concentration of NaSCN. The theoretical plate number (N) in almost all
experiments was the order of 104, and it became apparent that Am(III)was completely separated from Eu(III) in 0.40 ~ 1.00 M NaSCN
solution system.
3A05

Mutual separation of rare earths and the short-lived

lanthanide using capillary electrophoresis
KURIBAYASHI, T.,1 OOE, K.,1 OMOTO, T.,1 FUJISAWA, H.,1
KOMORI, Y.,1 TAKAHASHI, N.,1 YOSHIMURA, T.,1 HABA, H.,2
ENOMOTO, S.,2 MITSUGASHIRA, T.,3 SHINOHARA, A.1(1Osaka Univ., 2RIKEN, 3Tohoku Univ.)
The chemical behaviors of heavy actinides are little known, because
the most of them are short-lived isotopes with very low production rates.
It is difficult to mutually separate the trivalent actinides, because of thesimilarity of their chemical properties. The extraction and separation of
Am and Cm is an important subject in nuclear wastes treatment. We
have studied the mutual separation of Am, Cm and Cf using a capillaryelectrophoresis (CE) to improve the separation capacity. We used
α-hydroxyisobutyric acid (α-HIBA) as a ligand and examined thedependencies of the separation capacity on pH of the backgroundelectrolyte, the capillary length and the flow rate of the outlet. As a result,(aTokyo Tech. bTohoku Univ.)

we achieved the high efficiency and resolution in the separation of Am

Adsorption behavior of technetium on tertiary pyridine resin in

and Cm. We also attempted to apply this CE methods to short-lived

hydrochloric acid solution was investigated. Distribution coefficients ofnuclides produced with an accelerator.

technetium were determined by batch experiments. Adsorption
behaviors of technetium and rhenium were compared. Technetium has a

3A06 Application of UTEVA resin cartridge to separate Th and U

little larger distribution coefficient in higher concentration hydrochloric

in solidified product of simulated wasteacid region than rhenium. However, the tendency of adsorption behavior

FUJIWARA, A., KAMEO, Y. , NAKASHIMA, M.

of technetium and rhenium is similar. We concluded that the rhenium(JAEA)

can be used as the substitute for technetium. Adsorption behaviors of

Separation of Th and U in dissolved solution of solidified products ofsimulated waste with UTEVA resin has been investigated. Thorium

platinum group elements were also investigated. The separation oftechnetium from platinum group elements was discussed.

and U were separated from the other elements such as Na, Al, Ca, Fe bycolumn chromatography with UTEVA resin and recovered with the

3A09 Redox reactions of technetium by radiolysis and sonolysis:

solution containing 0.1 M HNO3 and 0.05 M oxalic acid.

formation and dissolution of Tc(IV) oxide nanoparticles

The

concentration of Am and Pu in the fraction to recover Th and U was

SEKINE, T.a,b, ZAKIR, M.bunder the detection limit. Although 1% of Np was contaminated to the(a CAHE, Tohoku Univ., bGrad. School of Sci., Tohoku Univ.)

recovery fraction of Th and U, Np would not interfere the measurement

Redox reactions of Tc in aqueous solutions by sonolysis wereof U. UTEVA resin cartridge system with flow pomp was applied toinvestigated to compare redox processes of technetium by radiolysis.

the separation of Th and U. The result from cartridge system showed

Nanoparticles of Tc(IV)O2⋅nH2O were formed by gamma-irradiation ofgood separation of Th and U from Na, Al, Ca, and Fe. The flow rateaqueous pertechnetate (Tc(VII)O4 ) solutions via reductions processes

with cartridge system was 4−5 times faster than that with column system

triggered by hydrated electrons and H radicals. In contrast to radiolysis,

to shorten the operation time.

no reduction was observed by ultrasonic irradiation (200 kHz, 200 W) of−

aqueous TcO4 solutions. However, we found that TcO2⋅nH2O−

3A07

Development of mass analysis technique by TIMS fornanoparticles dispersed in an aqueous solution were completely

FT-TIMS method

dissolved by ultrasonic irradiation within 30 min under Ar atmosphere,

IGUCHI, K., LEE, C. G., SUZUKI, D., INAGAWA, J., ESAKA, F.,

and TcO4 was eventually produced. The production of TcO4 was

MAGARA, M., SAKURAI, S., USUDA, S., SHINOHARA, N.,considerably suppressed in the presence of t-butyl alcohol, indicating

HOSOMI, H., ONODERA, T., HUKUYAMA, H., ESAKA, K.

that Tc(IV) was oxidized by OH radicals in hot cavitation bubbles(JAEA)

created by ultrasound. The formation rate of TcO4 under He atmosphere

−

−

−

We have developed mass analysis technique by TIMS in FT-TIMS

was slower than that under Ar atmosphere. Because thermal

method for particle analysis of safeguards environmental samples which

conductivity of He is much higher than Ar, thermal transport effectively

is required to analyze a small particle with a sub-micron size. In theoccurs from the bubbles to the surrounding liquid. Thus, temperature ofpresent work, experiments using uranium particles of isotope standard

cavitation bubbles filled with He should be lower than those filled withreference materials are carried out to obtain information for representing

Ar, resulting in the slower OH formation rate.

the ability of FT-TIMS method and advancing the method. By thismethod, minor isotopes 234U and 236U which provide detail information

3B01 Depth distribution of 241Am in water columns of the Eastern

about nuclear activities are measured in addition to major isotopes 235U

Indian Ocean and its adjacent seasand 238U. Furthermore, a particle with a sub-micron size is successfully

IZUMI, T.1, NAGAOKA, M.2, YOKOYAMA, A.1, NAKANISHI, T.1

analyzed to determine the isotope ratios. In addition, particle sizes are(1Grad School Nat. Sci. Tech., Kanazawa Univ., 2Fac. Sci., Kanazawa

obtained based on the uranium signal intensity in the isotopic

Univ.)

measurements to be compared with accuracy and precision. The

Artificial radionuclide 241Am (T1/2 = 432.2 y) in the environment is theability of FT-TIMS method is improved by connecting the information

daughter of 241Pu (T1/2= 14.35 y) from atmospheric weapons testing. In

from isotopic measurements with the screening technique[1].

this work depth distribution of 241Am was measured through the[1] C. G. Lee et al., Jpn. J. Appl. Phys., 45 (2006) L1121-L1123.

determination of the nuclide in large volume of water samples collectedin the Eastern Indian Ocean and its adjacent seas during the period of

3A08 Adsorption behavior of technetium on tertiary pyridine

1996~1997. Depth distribution of 241Am was compared with the depth

resin in hydrochloric acid solution

distribution of 239,240Pu. The depth distributions of 241Am were also

SUZUKI, T.a, SANGO, M.a, FUJII, Y.a, WU, Y.b, MIMURA, H.bcompared among sea-areas. The results suggest that subsidence behavior

of 241Am is largely controlled by the flux and chemical composition of
settling particles.

Residual neutron induced radioisotopes in the surface soil from the
Semipalatinsk Nuclear Test Site in the northern part of the Kazakh
Republic have been studied. The radioactive concentrations of induced

3B02 Colloid Transport of Plutonium in the Far-Field of theradionuclides, 60Co and 152,154Eu in the same soil sample collected at the

Mayak Production Association, Russia

bank of crater which was formed by an underground nuclear detonation

UTSUNOMIYA, S. (Kyushu Univ.), NOVIKOV, A.P. (Rus. Acad. Sci.),on 15 January 1965 have been reported in the former research. The

KALMYKOV, S.N. (Moscow St. Univ.), EWING, R.C. (Univ.

object of this study is to explore further investigation about the activation

Michigan), HORREARD, F. (Cameca, France), MERKULOV, A

products,(Cameca, France)., CLARK, S.B. (Washington St. Univ.), TKACHEV,

radiochemical separated respectively from large amount of 60Co and

V.V. (Rus. Acad. Sci), MYASOEDOV. B.F. (Rus. Acad. Sci.)

137

Sorptionofactinides,

particularly

59,63

Ni,

108m

Ag and207

Bi. Silver and bismuth were

Cs to improve the precise determination of the radioactivity, andplutonium,

onto

108m

Ag and 207Bi were measured with a high sensitive well-type Ge

submicrometer-sized colloids increases their mobility, but thesedetector. Nickel was also purified radiochemically, 59,63Ni was detected

plutonium colloids are difficult to detect in the far-field. We identified

with a liquid scintillation counter. ICP-MS was used for theactinides on colloids in the groundwater from the Mayak Production

determination of the chemical composition of the soil. Neutron fluence

Association, Urals, Russia; at the source, the plutonium activity is ~1000

has been estimated from the radioactivity of the induced radionuclides

becquerels per liter. Plutonium activities are still 0.16 becquerels per literand the numbers of the target nuclides.

at a distance of 3 kilometers, where 70 to 90 mole percent of theplutonium is sorbed onto colloids, confirming that colloids are

3B06 Behavior of environmental radioactivity in Mushrooms

responsible

KOURA, T., KAWABATA, T., NAKATANI, M., YOSHIMOTO, T.,

for

the

long-distancetransportofplutonium.

Nano–secondary ion mass spectrometry elemental maps reveal that

NAKAYAMA, T.

amorphous iron oxide colloids adsorb Pu(IV) hydroxides or carbonates(Ishikawa Prefectural Institute of Public Health and Environmental

along with uranium carbonates.

Science)
It has been more than 10 years from last nuclear experiment in the

3B03 Behavior of plutonium in seawaters of the North and Southatmosphere or Chernobyl reactor accident, although radioactive Cesium

Pacific Ocean(Cs-137), which came from above events, is still detected in some foods.

1

1

2

2

HIROSE, K., AOYAMA, M., KIM, C.S., YIM, S.A

Especially, it is well known that mushroom show the high concentration(1Meteor. Res. Inst., 2KINS)

of Cs-137 compare with other foods.

The present levels of plutonium and its behavior in seawaters of theNorth and South Pacific Ocean are summarized. The

239,240

In this study, we investigated the behavior of Cs-137 in some wildPu

mushrooms, collected at the forest in Nanao city, Ishikawa, such as theconcentrations in surface seawaters in the early 2000s were in the range

difference of concentration by a kind and by a part, shift coefficient from-3of 1.5 to 9.2 mBq m in the North Pacific subtropical gyre and 0.8 to 4.1-3

ground substance (soil or parasite) and relations between stable alkali

mBq m in the South Pacific subtropical gyre, respectively. The vertical

metals. Then we found that wild mushroom show the high concentration

profile of 239,240Pu in the South Pacific with surface minimum, mid-depthof Cs-137 in the upper part (pileus) and high shift coefficient of Cs-137(600-800m) maximum and decrease in deeper layer was the similarfrom ground substance (soil and parasite). We also found that thepattern to that in the North Pacific, which is controlled byconcentration of Cesium strongly correlate with that of Rubidium.

biogeochemical processes. The

239,240137

Pu/ Cs ratios, which reflect

biogeochemical processes, increased exponentially with increasing

3B07

depth within the depth range of 0 to around 1000 m in the North andMatsusaki site

Estimation of origin of sample clinging on remains ofSouth Pacific Ocean. In deep waters (> 1000 m), the plutonium

NAKANO-OHTA, T. a, ANDO, A. b, NAKANO, T. b, KUBOTA, T.aconcentrations in seawater of the North Pacific are generally higher thanAND MAHARA, Y.athat in the South Pacific. The 239,240Pu inventories (down to 2300 m) in(aRes. Reactor Inst., Kyoto Univ., b Res. Inst. for Humanity and Nature)

the North Pacific are generally greater than that in the South Pacific.

Matsusaki site, Aich prefecture, is thought to be one of the famous
salt-production site in Japan. Mori reported that the marine benthic

3B05

Residual induced radioisotopes in the soil of the

diatom, Cocconeis scutellum, was detected from a sample clinging on

Semipalatinsk Nuclear Test Site in the former USSR

remains of Matsusaki site. The discovery of this diatom supported the

KOJIMA, S.,a ARINOBU, T.,a SAITO, T.,b YAMAMOTO, Y.csalt-production by using marine products in Matsusaki site. In thisa

( Aichi Med. Univ. School Med., Radioisot. Res. Cent., Osaka Univ.,

study, this adhesion thing was measured by following analyticalcprocedures: 1) chemical composition by ICP-AES and AAS, 2)

LLRL, Kanazawa Univ.)bchemical form by XRD, and 3) 87Sr/86Sr ratio by Mass spectrometry.

26

The result showed that the sample originated from marine products.

samples once used for instrumental neutron activation analysis at KUR.

Al can be safely determined using AMS in the cosmochemical

Additionally, we determine 26Al produced in the aluminum sheet which
3B08 Radium isotope geochemistry in Na-Cl type saline spring

was irradiated for 50-120 h in the reactor core in order to evaluate thewaterscontribution of fast neutron-induced reaction in the reactor core at KUR.

TOMITA, J.,1 YAMAMOTO, M.,1 SATAKE, H.2(1LLRL, Kanazawa Univ., 2Faculty of Science, Toyama Univ.)
226

Radium ( Ra,

228

238

Ra) and uranium( U,

3P02 Measurements of isotope ratios in meteorite samples using

234U) isotopes dissolved inneutron activation analysis with multiparameter coincidence

57 saline spring waters from coastal areas of Niigata, where is famous

methodfor oil and gas production in Japan, Ishikawa and Toyama prefectures

HATSUKAWA, Y. MIYAMOTO, Y., OSAWA, T., TOH, Y., KIMURA,

were measured along with dissolved major elements and δD and δ18O.

A., OSHIMA, M.

18

The relationships of both δD–δ O and δD–Cl indicated that spring(Japan Atomic Energy Agency)

waters sampled were probably mixtures of local meteoric water and sea

We developed a new technique of trace element analysis based onwater or fossil sea water. The concentration of 226Ra and 228Ra/226Ra

neutron activation analysis with coincident gamma-ray detection. In

activity ratios ranged from 2.3

9.7,

order to improve the low efficiency of coincident gamma-ray detection,

Ra concentration

an array of 16 Ge detectors with BGO Compton suppressors was used

2400 mBq/kg and 0.28

respectively, and some hot spring waters with high226

over 1000 mBq/kg were found. The 238U concentrations were in the low
range from 0.008 2.4 mBq/kg. By taking into account of such low

238

for this method.

In the case of neutron activation analysis,Umeasurements of gamma-rays from trace elements are strongly

concentration and insolubility of its daughter nuclide 230Th, dissolved

interfered by the gamma-rays from major elements, e.g., 24Na, 56Mn.

226

Ra is unlikely to be supported by parent nuclide, and, therefore, other

So usually chemical separation processes are required to eliminate themechanisms should be considered. The factors of ion exchange

major elements for determination of the trace elements. But using thisdepending on the salinity, α-recoil and balk rock dissolution are probably

method, we can detect very weak gamma rays from trace elements

important to consider the mechanisms of transport of Ra to solution

without chemical separations. In this study, we try to measure tracephase.

elements in presolar grains. Presolar grains are synthesis in the Super
nova or Red giant, and found in the primitive meteorite. We obtained

3B09 Activity ratio of Ra isotopes leached from mineral and rocknanodiamonds as presolar grains from the Allende meteorite, and try to

NAGAI, K., TAKAHASHI, N., SATO, J.

measure trace elements in the grains using this method. We also

(Meiji Univ.)

measured isotope ratios of some elements in meteorite samples, such as

Leaching behavior of Ra isotopes from radioactive minerals

presolar grains, chondrules.

(monazite and euxenite) and rock (granite) was observed. The variationin the activity ratios of Ra isotopes in the leachates from monazite,

3P03 Long-term stability evaluation by neutron imaging andeuxenite and granite with HCl aqueous solution showed a common

activation analysis of archeological samples for radioactive waste

tendency. The leaching efficiency of Ra isotopes was estimated to bedisposal study

dependent on the difference in the history of decay processes which have

MATSUE, H., YOSHIKAWA, H., MATSUBAYASHI, H., IIKURA,

formed Ra isotopes.

H., SEGAWA, M.
(JAEA)
26

3P01 Determination of Al produced by fast neutron-induced

For long-term stability evaluation of artificial barrier materials to use

reaction (n, 2n) in an aluminum sheet at KUR

for disposal of disposal of high-level radioactive waste, we carried out

SEKIMOTO, S.,a TAKAMIYA, K.,a KOBAYASHI, T.,b MATSUZAKI,

the natural analog study using archeological samples that assumed acaH., SHIBATA, S.

similar corrosion process in natural environment. In this study, we(aRes. Reactor Inst., Kyoto Univ., bCollege of Humanities and Sci.,

introduce some corrosion data for some iron and cupper material samplecNihon Univ., School of Eng., The Univ. of Tokyo)

to comparison for some radioanalytical techniques.

We carried out

To estimate a contribution of fast neutron-induced reaction 27Al (n, 2n)non-destructive analysis with neutron imaging, neutron activation

26

Al at Kyoto University Reactor (KUR), we determined 26Al in theanalysis, prompt gamma-ray analysis and X-ray computed tomography

neutron-irradiated high-purity aluminum sheet using accelerator mass

for the analysis of the sample corrosion thickness of the rust layer andspectrometry (AMS) at Micro Analysis Laboratory, Tandem Accelerator,

multi-elemental analysis.

the University of Tokyo. The neutron irradiation was carried out for 50
min using Pn-2 at KUR. Based on the result, it was confirmed that

3P04 Distribution of secondary neutron produced at high-energy

accelerator facility in a shielding concrete

0.82-1.01 observed for general cosmetics. Furthermore, we evaluated a

KINOSHITA, N., MATSUMURA, H., BESSHO, K., TOYODA, A.,possibility of radiation exposure. The influence of gamma rays to skin

MASUMOTO, K.

surface from some hormesis cosmetics was estimated to be over 50 mSv(KEK)

per year. The addition of the radioisotope to cosmetics is prohibited in

The 12 GeV proton synchrotron of KEK has been utilized forhigh-energy physics. The shielding concrete of the facility has beensome countries by the laws. The examination of the object that should
prohibit the addition of the radioisotope is necessary.

exposed during machine operation. As a result, various radionuclides
have been produced through both nuclear spallation reactions and3P07 Change of concentrations of trace elements in hepatocyte ofthermal neutron capture reactions of concrete elements. We measured

mice at early stage of zinc deficiency

depth profiles of the radionuclides for the shielding concrete surrounding

MURAMATSU, W., KAMISHIMA, J., KAWASHIMA, M.,

EP1 beam line. Some radionuclides such as Na-22, Mn-54, Co-60, andYAMANO, Y., SUGANUMA, H., NOGUCHI, M., YANAGA, M.

Cs-134 were measured using a conventional HPGe detector and a(Fac. of Sci., Shizuoka Univ.)

specialized HPGe which is covered by a NaI scintillation detector inConcentrations of trace elements in hepatocyte of Zn-deficient andorder to reduce background component. We succeeded in acontrol mice were determined. Eight-week old male mice of ICR strain

determination of ultra-low level of radioactivity by a gamma-ray

were divided into two groups; one was fed with Zn-deficient diet, andspectrometry. We are going to discuss a distribution of neutron in athe other with control diet. After one week, their livers were removed

shielding concrete from the depth profile.

and separated into six fractions, such as nondestructive, nuclear,mitochondrial, lysosomal, microsomal, and cytosolic fractions, by

3P05

Analysis of boron-doped diamond using Doppler

broadening method of prompt gamma-raysa

TAKAYAMA, T., SAKAI, Y.,aneutron activation analysis, INAA. Concentrations of ten elements, Na,

WATANABE, Y.,ab

KUBO, K.,

MATSUE, H.,c SEGAWA, M.cabcentrifugal method. Each fraction was freeze-dried for instrumental
Mg, Cl, Mn, Fe, Co, Cu, Zn, Se, and Rb, in each fraction were
determined by INAA. Furthermore, SDS-PAGE and two-dimensionalc( Daido Inst. of Tech., International Christian Univ., JAEA)

electrophoresis were carried out for the cytosolic fraction. For zinc

Prompt gamma-ray analysis of a thin boron-doped diamond film on

concentrations in all fractions, there were no significant differences

silicon wafer was performed using the prompt gamma-ray analyzing

between two groups. On the other hand, cobalt concentrations in several

system installed at the thermal-neutron beam guide of JRR-3M at thefractions of Zn-deficient mice were higher than those of control mice.

JAEA. The concentration of boron in the diamond film was 9×1020

No significant differences were found for the positions and numbers of3

7*

atoms/cm . The degradation constant D of energetic Li ion wasprotein bands or spots on the gel after SDS-PAGE and two-dimensional

determined by analyzing the Doppler-broadened line shapes of prompt

electrophoresis.

gamma-ray at 478 keV emitted from 7*Li. The D value experimentallyobtained (3.37 ± 0.01×1012 s-1) for the boron-doped diamond was lower
12 -1

3P08 X-ray fluorescence analysis of trace elements in standard

than the D value from the LSS theory (3.67×10 s ). The differencematerials by SAGA-Light Source

might be due to some chemical effect on the degradation processes.

KAWAMURA, H.,a TAGOMORI, H.,a MATSUOKA, N.,a
SUMITANI, K.,b ISHIJI, K.,b OKAJIMA, T.b(aKEEA, bSAGA-LS)

3P06 Radioisotopes in cosmetics.
FURUTA,E.a,NAKAHARA,H.b,Oura,Y.b,HATSUKAWA,Y.c,MATSU
cdKyushu Synchrotron Light Research Center (SAGA-LS) has been

E,H. ,SAKANE,H.

established by SAGA Prefecture at February 2006. This is the first(aOcha.Univ., bTokyo M. Univ., cJAEA, dSHIEI)

applied research facility on synchrotron light in Kyushu. Electrons are

Cosmetics which declared hormesis effects are available throughaccelerated up to 1.4GeV and the light emitted is applied. Although thisInternet. Although ingredients labels are obligations for cosmetics, theis a medium size facility as compared to the other facilities in the world,

trace elements such as radiation sources are never shown.

Thea high brightness of the synchrotron light is one of the characteristics. We

existence of the daughter nuclides of Th and U series were observed bypresent X-ray fluorescence analysis of trace elements in standard

measuring the gamma rays with a high purity Ge detector. In this study,

materials by SAGA-Light Source. We selected Rock (JG-1a), marine

in order to clarify the contents of trace elements, the hormesis cosmetics

sediment (JMS-1) and coal ash (NIST-1633b) as standard materials

were analyzed using prompt gamma activation analysis and observed byand compared the results with the conventional method.

EPMA. Main elements of the hormesis cosmetics are some rare earth
elements such as La, Ce, Sm and Gd. The ratio of Gd/Sm included in

3P09

Tritium dynamics in the environment

all the hormesis cosmetics is 0.70±0.02, and the ratio is different from

Kagoshima Prefecture

Case study atKAWAMURA, H.,a TAMARI, T.,a MATSUOKA, N.,a IKENOHIRA,

129

I concentrations: 1.4 ×10-5 - 2.0 ×10-3 Bq/kg

T.,b SHIRASAKA, K.,b TOMO, N.ba129 127

I/ I ratio: 3.9 ×10-11 - 3.0 ×10-8b

We also measured 129I concentration in soil samples around( KEEA, Kagoshima Pref.)Two PWRs are under operation in Kagoshima Prefecture. We present

Rokkasyo-mura and Tokai-mura. Concentrations of 129I in Aomori

tritium level of atmospheric HTO, seawater, river water and organic

samples were almost in the same concentration range mentioned above.

samples and discuss the dynamics in the environment. Atmospheric

Concentrations of 129I in Tokai-mura samples were higher than those

HTO samples were monthly collected at three sampling sites duringfrom other places.

April 2000 through March 2006. The results show different tritium
levels at each site. Tritium levels in seawater collected at three sampling

3P12 Determination of a long-lived radionuclide 36Cl by AMS

sites were dependent on the distance from the PWRs. River water–study of sulfur reduction process inshowed slightly higher than the seawater collected at control site. As for

preparation–organic samples, we determined tissue free water tritium (TFWT) and

TAMARI, M.,1 SUEKI, K.,1 TOSAKI, Y.,2 MATSUSHI, Y.,3

tissue bond tritium (TBT) in 14 kinds of agricultural and marine

TAKAHASHI, T.,4 SASA, K.,1 NAGASHIMA, Y.4

products. The TFWT and TBT showed variable levels. The levels seem

(1Pure & Appl. Sci., Univ. Tsukuba, 2Life & Environ. Sci., Univ.

to reflect the tritium level of the environment during the growth of the

Tsukuba, 3School Eng., Univ. Tokyo, 4Appl. Accel. Div., Univ. Tsukuba)

36

Cl-AMS sample

Chlorine-36 (T1/2 = 3.01 × 105 yr) is mainly produced by the spallation

products.

reaction of cosmic-rays on 40Ar in the atmosphere and is widely
3P10 AMS Method for determination of I-129 in environmental

distributed in the environment. So that 36Cl is effectively used as asamplesmonitoring tool for the environment study. Recently, the isotopic ratioaaa

KAWAMURA, H., TAMARI, T., MATSUOKA, N., KAKIUCHI,
b

b

b

36

Cl/Cl is determined by accelerator mass spectrometry (AMS). It is

H., AKATA, H., UEDA, S.

necessary to chemically remove sulfur from samples, because isobaric(aKEEA, bIES)

36

S interferes with 36Cl in the AMS measurement. In general, sulfate is

We present AMS method for determination of 129I in water, soil

removed as BaSO4 precipitate by adding saturated Ba(NO3)2 solution.

sediment, organics and atmospheric I samples. After addition of

However, the BaSO4 method is time-consuming and causes a low

woodward I carrier and pretreatments, I in the samples were finallychemical yield of AgCl. In this study, we propose new sulfur reduction

collected as AgI powder. The following methods were performed as themethods, i.e. a coprecipitation of sulfate with BaCO3 precipitate and an

pretreatments: solvent extraction for water, quartz tube combustion foranion-exchange resin technique. The behavior of sulfur as sulfate insoil sediment, quartz tube combustion or Parr oxygen bomb forthese methods was confirmed by the tracer experiments of 35S. The

organics and TMAH extraction for atmospheric I collected by using

results obtained suggest that a strong base anion-exchange resin

quartz and charcoal filters. AgI target was prepared with a mixture of Nb

technique is effective and could remove about 70% of the sulfate in the

powder and

129 127

I/ I was determined by Purdue University AMS.

129 127

I/ I

original solution.

of IAEA-375 (soil standard material) determined by our method was
1.58 0.08 10-7 (N=3). This agreed with previously reported 129I/127I-7-7

of 1.517 10 (Schmidt, 1998) and 1.7 10 (Muramatsu, 1995).

3P13 Producing an apparatus to separate and to collect krypton
in the atmosphere
INOUE, F.,

3P11 Determination of

129

I in soil samples collected from various

places in Japan by AMS(Science, Kyushu Univ.)
One of the important radionuclides being in environment is

TAKADA, Y.a, MURAMATSU, Y.a, MATSUZAKI, H.b, YOSHIDA,

krypton-85. After emission to the atmosphere, this nuclide is spread overS.cthe earth according to advection and diffusion of the atmosphere,

a

b

c

( Gakushuin Univ., Tokyo Univ., NIRS)

therefore the nuclide is noted as large-scale tracer of atmospheric

Iodine-129 (half life: 16 million years) is one of the most importantcirculation. And it is also noticed as the mothod to decide the age ofradionuclides in environmental sciences. Because iodine is concentrated

environmental water. Thus, it is very usefull to study about krypton in thein thyroid gland of human body, it is necessary to measure the levels of

atmosphere. So we are studying for the purpose of producing an

this nuclide in the environment. In this study, we determined

129 127

I/ I ratio

apparatus to separate and to collect krypton in the atmosphere. At first,

by AMS (accelerator mass spectrometry) in environmental samples such

we examined vials to use at the measurement. As a result, Teflon vial

as soils. For the analysis of stable iodine, we have used ICP-MS.

was inapproriate for escaping krypton to outside. Next, we examined theAnalytical results obtained for soil samples collected from various places

gaschromatographic column for kind and temperature. After decision of

in Japan, far from nuclear facilities, were as follows.

the column, we actually injected the air and separated and collectedkrypton. At this point, we also check separation condition of krypton.

of Po gave good recovery, but sulfuric acid gave poor recovery. Twohours plating is sufficient on 0.2A at 90 .

3P14

Research of the environmental water dynamics using

tritium as a tracera

HIROSE, A.,

3P17 Investigation on extraction methods of environmental iodinea

INOUE, F.,b

SUGIHARA, S.,

MOMOSHIMA,

N.,c MAEDA, Y.,b SATAKE, H.,dwith using I-126
KUBOTA, T.,a NAKANO-OHTA T.,a AMANO H.,b SUZUKI T.,b(aGrad. School of Science, Kyushu University, bFaculty of Science,cdKyushu University, Radioisotope Center, Kyushu University, Facultyof Science, Toyama University)

MAHARA Y.,a(aRes. Reactor Inst., Kyoto Univ., bJAEA)In analysis of environmental iodine, samples containing low I-129 are

The tritium, which is formed with the cosmic ray in the atmosphere

subject to contamination from reagents and apparatus. We measured theexists mainly in chemical form of the water. Environmental water, suchisotopic ratio of I-129/I-127 in brine which was collected at Mobara inas rain water and the river water, mutually has close relations. The

Chiba prefecture and was characterized as having a high iodine

tritium can be an important index in thinking about this water circulation.

concentration and a low isotopic ratio. The results, however, showed

So the concentrations of the tritium were measured for environmental

high isotopic ratios.

water samples. We estimated the underground water residence time by

We suspected that the contamination was caused by using halogen

the compartment model in the Umi river, Fukuoka Prefecture. We used

containing reagents because the samples treated with Cl-form anion

MOGRA(Migration Of GRound Additions) for analysis.

exchange resin in iodine extraction process were strongly contaminated.
In this study, we have conducted halogen-free extraction processes such

3P15 Effect of tritium injecting methods on the HT, CH3T and

as ion exchange and solvent extraction whose recovery has been

CH4 emission trends from stainless steel surface

investigated with gamma spectrometry of I-126 produced through

a

a,b

a

HIGAKI, S., OYA, Y., MAKIDE, Y.

photonuclear reaction with the KURRI LINAC. The total iodine(aRadioisotope Center, The Univ. of Tokyo, bRadiochem. Res. Lab.,

recovery through ion exchange with NO3-form anion exchange resin

Shizuoka Univ.)

and solvent extraction with dodecane was more than 80%.

Unknown methane contamination occurs by the metal-metal collisionor friction of stainless steel (SS). After T2 gas was injected into the inner

3P18 Energy distributions of environmental neutron in liquids

surface and many small SS balls placed in a canister made of SS, theand solids

contamination was simulated by shaking the canister. We reported

HAMAJIMA, Y., KOMURA, K.

previously that emission from SS canisters which tritium was injected by(LLRL, Kanazawa Univ.)

heating only (Thermal method). In this presentation, we injected tritium

Depth profiles of environmental neutron fluxes in freshwater, seawater,

into a new SS canister by heating with shaking (Mechanical method).

concrete, iron and lead have been measured by activation method of

We simulated the contamination as well as previously reported, andgold foils. Depth profiles of gold activity and neutron flux have been

compared these trends. The specific radioactivity of methane

simulated by Monte Carlo neutron transport codes (MCNPX2.4.0) and(CH3T/CH4) was almost constant with repeated extraction from thethe results were compared. The simulated depth profiles were wellcanister which injected by Thermal method. On the other hand, it was

reproduced in all the experimental results, in case of using gooddecreased by Mechanical method. The ratio between CH3T and HT was

MCNPX parameter sets. The energy distribution of environmental

almost constant from each canister. It was thought that the depth profile

neutron source, especially fast neutron components, and its shape in air isof T to H in SS injected tritium by Thermal method was almost constant,significant for the depth profiles of flux. MCNPX is able to estimate

whereas it was high at near the surface by Mechanical method.

environmental neutron flux, energy distribution, and induced activities inany materials at any depth. Our results are useful for the erosion and

3P16 Examination on electroplating of Po on stainless steel disk

dating study in geo-science field, for the low-level radioactivity

UESUGI, M., NAKANISH, T.

measurements, and for the design of detector and its shield.

(Grad. School Nat. Sci. Tech., Kanazawa Univ.)210

Po is usually measured by isotope dilution alpha spectrometry.

3P19 Research of determination method of U and Th isotopes inHence it is important to prepare thin Po source with good recovery andriver water by solid-phase extraction / alpha spectrometory

convenience. In this work electroplating of Po on stainless steel disk was

TAKAHASHI,K. HIRAI,S. OKADA,Y.

examined with making a chang in conditions such as major anion(Musasikougyou Univ)

species, presence of other metal-ion, temperature, current and plating

Various alphamitter that discharges the alpha ray exists in the natural

time. On the hydrochloric acid, nitric acid and phosphoric acid solution

world. Therefore, alphaemitter can be found in all places. The researchwhich these examine distribution is nature water. There is a solid-phase

In this work, we developed a prototype of the graded screen arrayextraction method in the fixed quantity method and the collection(GSA) system optimized for measuring a size distribution of radioactive

method of trace alpha emitter.

nano-particles formed in operating accelerators. The GSA is a useful

The present study is Research of determination method of U and Th
isotopes in river water by solid-phase extraction method.

technique for measurement of particle size distributions of small aerosols
as well as the wire screen diffusion battery (DB). Although both of the
GSA and DB separate the aerosol particles depending upon their

3P20

Correlation between

212, 214

Pb activities and leaddiffusion coefficients using wire screens, the GSA has advantages ofconcentration in the atmosphere by a gamma-ray measurement

small size and rapid measurement over the DB. The small GSA can beinstalling an in-situ weather monitoring station

placed in an accelerator room during machine operation and collect the

SAKAMA, M., IMURA, H., OKUBO, H., SHINMOTO, Y., SUJINO,

nano-particles just after their formation by radiation. We found optimal

K.

parameters for the GSA system such as mesh size and diameter of wire

(School of Health Sciences, Univ. Tokushima)

screens, data processing method, air flow rate, and sampling duration.

In this work, we have developed a gamma-ray measurement of

212

Pb

The prototype GSA system was examined using actually formed

and 214Pb activities in the atmosphere in Tokushima using an highnano-particles in the 46-MeV electron linac at Kyoto University

volume air sampler installing an in-situ weather monitoring station. The

Research Reactor Institute.

weather monitoring station was set up nearly close to the air sampler on
the rooftop of the north building of School of Health Sciences at

3P23 Radioactivity content of papers (V)Kuramoto Campus. Using this weather monitoring station, it has been

KOBASHI, A.

possible to observe the general weather conditions at the same time with

(School of Science, Univ. of Tokyo)

collecting aerosol particles in the atmosphere. For the determination of

The radioactivities of naturally occurring radionuclides and 137Cs inlead concentration in the atmosphere, a soluble fraction was eluted by 1

the ashes of papers were estimated from the data of the nuclide contents

M HNO3 from a glass fibre sampling filter after the gamma-rayof the papers obtained in the previous works and ash content datameasurement of one sample, and the amount of lead atoms contained

obtained in this work. The average 226Ra, 228Th, and 40K contents of all

into the fraction was analyzed by a graphite furnace atomic absorption

the 34 samples were respectively 27, 75, and 75 Bq kg-1. The radiumPbequivalent of the ashes was calculated to be 129 Bq kg-1. The

activities in the atmosphere has enabled us to investigate correlation

radionuclde contents of the ashes were compared with those of granite

between their activities and lead concentration in the atmosphere under

and the earth crust, and the level of the radioactivity contained in thethe different weather conditions.

ashes was discussed from the view point of radiation exposure.

3P21 Variation in the atmospheric concentrations of 214Pb at

3P24 Synthesis and crystal structures of the uranyl(VI) complexes

Kawasaki, Japan

coordinated by terpyridine

spectrometry. As a result, the present measurement system ofab212, 214c

KOIKE, Y., MATSUZAWA, N., SATO, J.

KAWASAKI, T.,1 KITAZAWA, T.1(aThe University of Tokyo, bYokohama National University, cMeiji(1Fac. Sci. Toho Univ .)University)

Single crystals of {[UO2(OH)(MeOH)(terpy)]2[UO2(NO3)4]} andEvery four hours variations in atmosphere 214Pb concentrations
were observed at Kawasaki, Japan. The variation patterns within 24
hours of the atmospheric concentration of short-lived

214{[UO2(NO3)(terpy)]2O2} have been synthesized, and the two crystal
structures

have

been

determined

by

using

X-ray

CCD.

Pb (half-life:{[UO2(OH)(MeOH)(terpy)]2[UO2(NO3)4]} has two distinct uranium

26.8 min.) is similar to that of 212Pb (half-life: 10.6 h.). The variation in

atoms, a hexagonal- bipyramidal U(1) of [UO2(NO3)4]2- and a distorted

atmospheric concentrations of the short-lived 214Pb was observed topentagonal-bipyramidal U(2) of [UO2(OH)(MeOH)(terpy)]+. The

depend strongly on the local meteorological conditions in a short period.

equatorial positions of U(1) are occupied by the two monodentate nitrate

High concentrations of 214Pb tend to appear on the days with westerlyions and the two bidentate nitrate ions. The equatorial plane of U(2) iswind from inland area, low wind velocity and without precipitation.

accommodated with one terpy molecule, one hydroxyl ion and one
MeOH molecule. The {[UO2(NO3)(terpy)]2O2} contains the distorted

3P22 Development of a graded screen array for measuring size

hexagonal-bipyrimidal geometry about the uranyl(VI) ion. The

distribution of radioactive nano-particles

equatorial plane of the bipyramid includes three N atoms of the terpy

OSADA, N.,a BANNO, S., a OKI, Y., b YAMASAKI, K., b SHIBATA, S.

molecule, one O atom of the monodentate nitrate ion and two O atomsbof the peroxide ion. The peroxide ion bridges between two uranyl(VI)a( Graduate school of Engineering, Kyoto University,

Reactor Institute, Kyoto University)bResearchions in {[UO2(NO3)(terpy)]2O2}.

Am(III) were extracted in the region of 4 < pH < 7. The distribution
3P25 Crystal structures of [UO2(acac)2(4-R-py)] (R = H, Me, Et,

ratios, DEu(III) and DAm(III), were nearly same values, or DEu(III) wast

Bu, OMe, NMe2)

somewhat higher than DAm(III). It was also proved that the values of

TAKAHASHI, M., KOMAGINE, J., TAKEDA, M., KITAZAWA, T.

DEu(III) and DAm(III) in the case of the organic phase of 1,2-dichloroethane(Dep. of Chem., Toho Univ.)

containing a hydrophobic anion, TFPB, were higher than those without

The crystal structures of the pentagonal bipyramidal uranyl(VI)

TFTB.

complexes having 4-substituted pyridines, [UO2(acac)2(4-R-py)] (R = H,
Me, Et tBu, OMe, NMe2), are discussed. The U–N bond lengths

3P28 Determination of standard transfer energy of TcO4-(2.515—2.668 Å) are well correlated with the electronic properties ofion between aqueous and organic solution phases

the substituents of the pyridine; 2.668 Å for R = CN and 2.603 Å fora

N(CH3)2. The U=O (1.755—1.789 Å) and U–O(acac) (2.342—2.366bÅ) bond lengths are also affected with the substituents though some

The Gibbs energy for transfer (ΔGtr°) of an ion between

steric effects may be present; both the U=O and U–O lengths becomeaqueous and organic solution phases is a fundamental

longer as the U–N lengths are shorten, and the degree of the change isparameter for distribution of the ion on solvent extraction. In

larger for the U=O length. The O(acac)–U–O(acac’) (138.0—143.4°)

the present study, the ΔGtr° of TcO4- was determined byand the dihedral angles between the equatorial plane and pyridine rings

partition(37.8—56.1°) are also correlated with the U–N bond lengths.

extractability of the ion and the reference ion, that is, NO3-. Thea

KITATSUJI, Y.,

KIMURA, T.,b

KIHARA, S.( aJAEA,

Kumamoto Univ.)

method

which

is

based

on

comparison

ofaqueous solution phase of 5 ml of HNO3 containing TcO4- and3P26 Study on the separation of Am(III) from Eu(III) using self

the organic solution phase of 5 ml of tetrabutylammonium

assembled monolayers

nitrate were mixed to be ion transfer equilibria. The ΔGtr° of

1

1

KATO, J.,YANAGA, M.,

2

SATOH, I.,

3

NAKAMURA, T.,

TcO4- was calculated from standard ion transfer potential of

SUGANUMA, H.

NO3- and partition coefficients of these ions based on the(1Fac. of Sci., Shizuoka Univ., 2IMR, Tohoku Univ., 3Shinshu Univ.)

Nernst equation. The ΔGtr° of TcO4- is found to be close to that1

It is expected that self assembled monolayers (SAMs) have the abilityof ClO4- whose ion size is similar to that of TcO4-.

of selective absorption for metal ion based on HSAB principle. So, theabsorption behavior of 152,154Eu(III) and 241Am(III) from (H, Na)NO3

3P29 A study on adsorptivity of U(IV) onto monoamide resins

solution using 3-MPTS (3-mercaptopropyltrimethoxysilane) SAMs

NOGAMI, M., IKEDA, Y.

on SiO2 particle (grain size; 1~5 µm) was investigated. In the region(Res. Lab. Nucl. Reactors, Tokyo Tech.)4<pH of the solution, 3-MPTS SAMs have an excellent affinity for both

Novel silica-supported monoamide resins have been investigated toAm(III) and Eu(III). On the other hand, in the region pH<4, 3-MPTS

develop resins with selectivity for U(VI) in HNO3 media. It is known

SAMs have stronger affinity for Am(III) than for Eu(III). It was found asthat monoamides extract also Pu(IV) in solvent extraction systems, andthe (H, Na)NO3 concentration in the solution increases, the absorption

adsorptivity of Pu(IV) onto the resins may show different trends fromfor Am(III) and Eu(III) onto the 3-MPTS SAMs decreases.

the viewpoint of the three-dimensional conformation. In this study,
batch experiments were carried out by using U(IV) as the simulated ion

3P27

Solvent extraction of Eu(III) and Am(III) usingThe

sulfur-coordination ligands.
1

2

1

1

MIYASHITA, S., SATOH, I., YANAGA, M, OKUNO, K.,
1

1

2( Radiochem. Res. Lab., Fac. Sci., Shizuoka Univ., IMR, Tohoku Univ.)
Solvent

adsorption

studies

have

shown

that

Silica-VP(1),apyrrolidone-based resin, has little difference in distribution ratio, Kd,
between U(IV) and U(VI) from 0.2 to 9M HNO3. While, U(IV) was

SUGANUMA, H.

extraction

sulfur-coordinationof Pu(IV). U(IV) was prepared by electrolytic reduction of U(VI).

ofligands,

4,4'-diphenyltetrathiafulvalene

152,154

Eu(III)suchas

not adsorbed onto Silica-DMAA(1), an acryl-based resin, in the241

Am(III)

using

concentration range of HNO3 up to ca. 6M, which suggests that

toluen-3,4dithiol(TDT),

Silica-DMAA may have selectivity for U(VI).

and(DPTTF),

hexathiacyclooctadecane(18-ane-S6),(DHBT),

2,2':5',2''-terthiophene

1,4,7,10,13,16-

5,5′-dihexyl-2,2′-bithiophene(TT),2,5-bis(5-tert-butyl-2-benzoxazolyl)thiophene (BTBBT)), was carried

3P30 Determination of 79Se in radioactive waste samples
KAMEO, Y., KATAYAMA, A., NAKASHIMA, M.
On disposal of radioactive waste packages, evaluation of radioactivity

out. When the organic phase was 1,2-dichloroethane or nitrobenzene

inventories in the packages is required.

containing a sulfur- coordination ligand alone and the aqueous phase

important nuclides from the viewpoint of safety assessment for disposal

30.10 mol/dm sodium nitrate solution, it was found that Eu(III) andSelenium-79 is one of theof radioactive waste, because of its very long half life.

In the present

study, simple determination method for 79Se was developed and applied
to actual radioactive liquid waste samples arising from fuel repossessing
test facilities in Japan Atomic Energy Agency.

Radioactivity

concentrations of 99Tc in the liquid waste samples were also determinedby radiochemical analysis.

The numbers of 79Se and 99Tc atoms in theliquid waste samples were estimated with a computer code (ORIGEN2).
The half-life of 79Se estimated from the results of radiochemical analysis
and calculation was in good agreement with He, M., Jiang et al.’sreported value of 2.80 105 y.

that all the measured Ezo NIshiki were imported from the Qing dynasty
during a period from the middle 17th to the middle 19th century.
3P33 Radiolysis of water on some oxides
SAKAMOTO, S.,a MAEDA, Y.,a OKAI, T.b(a Faculty of Science, Kyushu University,b

Faculty of engineering,

Kyushu University.)
The Radiolysis of water is one of the ways to generate hydrogen gas.
Hydrogen gas generation from water radiolysis on some oxides is

3P31 Redox behavior of Ce(IV)/Ce(III) in the presence of organic
acids

studied. After 60Co gamma-ray irradiation of vials contain catalyst andsolution, hydrogen gas is detected by gas chromatography. The amountof generated Hydrogen gas is converted to G-values. The most G-values

SUZUKI, Y., NANKAWA, T., OHNUKI, T.

with catalyst are larger than the G-value without catalyst, and the(JAEA)
We investigated the redox reaction of Ce(IV)/Ce(III) in the presenceof NTA or desferrioxamine B (DFO) by CV and column electrolysis(CE). The cyclic voltammogram of Ce-NTA complex at pH 6.0 showed
the reversible one-electron transfer at 0.51 V (vs. Ag/AgCl) (ENTA). The
ENTA was independent of pH between 3.5 -7 and of the NTA
concentration between 0.005-0.2 M, indicating that no association and+dissociation of H and NTA were occurred during the redox reaction of
Ce-NTA complex. As the predominant species of Ce(III)-NTA complex
is CeIII(nta)23- at the condition, the redox reaction was represented by:CeIV(nta)22- +e- ↔ CeIII(nta)23-. The coulopotentiogram of Ce-DFO
complex at pH 7.3 showed the one –electron transfer at -0.055 V (Edfo).
The EDFO lowered as pH increased from 7.3 to 10.6, showing that the H+
was involved in the redox reaction, while it was constant at pH 10.6-12.
The potentiometry of Ce(III)-DFO complex showed that the
predominant species were CeIII(Hdfo)+ and CeIII(dfo)0 (H3dfo: DFO) at
pH 6.7-10.8 and 10.8-12, respectively. Hence, the redox reactions of
Ce-DFO complexes were represented by: CeIV(dfo)+ +H+ +e↔CeIII(Hdfo)+ (pH<10.8), CeIV(dfo)+ +e- ↔CeIII(dfo)0 (pH>10.8).

G-value is max with SiO2 as catalyst. We use several aqueous solutions
instead of pure water. The increases of G-values are observed with
KHSO4
3P34

solution, NaHSO4 solution and Na2CO3 solution.
Bacterial distribution and possible activity in deep

subsurface environment
NAGAOSA, K.,a HAMA, K.,b KUNIMARU, T.,b NAKAYAMA, M. b
AOKI, K.b AND KATO, K.a(aFac Sci., Shizuoka Univ., bJAEA, cRWMC)
When consider nuclear waste deposit into deep subsurface
environment, knowledge of in situ bacterial abundance, diversity andactivity must be substantial. However, studies in terrestrial deep
subsurface are in particular limited. Bacterial distribution andcommunity structure was examined in relation to geological setting fordeep subsurface water with samples from boreholes in Horonobe,
northern Hokkaido, Japan. Total direct count of bacteria (TDC) ingroundwater amounted to 4.61x104 - 5.06x106cells/mL. Bacterial
vertical profile can’t be explained simply by the knowledge obtained
from marine systems’. Very high frequency of dividing cells of bacteria,
an indicator of bacterial growth potential, was observed in a transition

3P32 Radiocarbon dating of the silk fabrics laced with coloredzone between two sedimentary rock formations of HDB-6-1. HDB-4,

threads “Ezo Nishiki” by AMS

1.5km northwest of HDB-6, was characterized with high abundance ofaaODA, H., HONJO, K., NAKAMURA, K.

b(aCenter Chronol. Res., Nagoya Univ., bHakodate National Col. Tech.)
Ezo Nishiki is silk fabrics laced with colored threads. They were
imported into Japan from China by way of Amur valley and Sakhalin.

domain Archeae contributing 10 to 20% to TDC, where
Methanosprillum sp. was found by 16S rDNA. CH4 vertical profile
supported their possible activity in in situ. Bacterial distribution andpossible functions are suggested to be clearly constrained by thegeological property in deep terrestrial subsurface.

The foreign commerce via this route is called Shandan trade. The
beginning of Shandan trade can be traced back to 13th century byancient documents and records, and it was disappeared in the latter halfof 19th century. Most of Ezo Nishiki, however, have no definite woven
ages. In this study, we measured radiocarbon ages of several Ezo Nishiki
by AMS to estimate their woven ages. The radiocarbon dating indicated

3P35 Involvement of the target of rapamycin (TOR) to uptake ofamino acid and ammonia
HOTTA, Y., ISOMURA, T., OYOSHI, T., USHIMARU, T., URITANI,
M.
(Faculty of Sci., Shizuoka. Univ.)

The target of rapamycin (TOR) is a highly conserved protein kinaseo-t-butylphenol

and

125

2-isopropylphenol

on

the

bindingof

125that plays a central role in the control of cell growth. Fission yeast[ I]3,3′,5-L-triiodothyroine ([ I]T3) to the Xenopus laevis plasma

possesses Tor1 and Tor2. Tor1 is not essential for growth while Tor2

thyroid hormone carrier protein, transthyretin (xTTR) and the ligand

is essential. Temperature-sensitive tor2 mutants mimicked nitrogenbinding domain of X. laevis thyroid hormone receptor β (xTR LBD),

starvation response at the restrictive temperature, as the mutant displays aand on T3-induced metamorphosis in X. laevis tadpoles. Scatchard plots

number of phenotypes that are normally induced only upon nitrogenof T3 binding to xTTR and xTR LBD revealed a single class of T3

deprivation. Here we characterized the uptake of amino acids andbinding sites, with Kd values of 7.1 nM and 0.28 nM, respectively.

ammonia (nitrogen source) in the tor2 mutants. The results showed thatAmong

uptake of amino acids decreased rapidly upon temperature shift, while

2,4,6-triiodophenol were potent inhibitors of [125I]T3 binding to xTTR

that of ammonia decreased only slowly. Rheb is a small GTPase thatand xTR LBD, respectively. 3,3′,5-Trichlorobisphenol A (2 µM) andbinds to and activates TOR. A constitutively active mutant for rheb1,

2,4,6-triiodophenol (1.2 µM) acted as T3 antagonists in the X. laevis

rheb1-10, showed reduced a level of uptake of amino acids, while

tadpole metamorphosis assay using endogenous T3 responsive gene as arheb1-10tor2 double mutant recovered the uptake. The results suggest

molecular marker. 2-Isopropylphenol and o-t-butylphenol, for whichthat Tsc1/Tsc2-Rheb pathway controls amino acid uptake via Tor2.

xTTR and xTR LBD had weak or no affinity, showed T3 antagonists

the

test

chemicals,

3,3′,5-trichlorobisphenol

A andactivity in the metamorphosis assay. Chemicals, detected in water
3P36 Rapamycin sensitivity of fission yeast TOR

downstream of effluents from paper manufacturing plants, interacted

OZAWA, S., ISOMURA, T., OYOSHI, T., USHIMARU, T.,with xTTR using the TTR assay. Our results suggest that EDCs target

URITANI, M.

the process of T3 binding to xTTR and xTR LBD resulting in the(Faculty of Sci., Shizuoka. Univ.)

interference with the intracellular T3 signaling pathway.

The target of rapamycin (TOR) is a highly conserved protein kinasethat plays a central role in the control of cell growth. In the cell, TOR
forms two distinct complexes, TOR complex 1 (TORC1) and TOR
complex 2 (TORC2). Binding of the rapamycin-FKBP12 complex to
TORC1 inhibits the TOR kinase activity and elicits a number of
responses that appear to mimic nitrogen starvation response. These
include a decrease in translation and ribosome biogenesis, changes ingene expression, altered sorting and turnover of nutrient permeases,
induction of autophagy and cell cycle arrest at G1. Although growth is notinhibited with rapamycin, fission yeast possesses Tor1 and Tor2. Tor1isnotessential

forgrowth

while

Tor2

is

essential.

Temperature-sensitive tor2 mutants mimicked nitrogen starvation
response at the restrictive temperature, as the mutant displays a number ofphenotypes that are normally induced only upon nitrogen deprivation.
Here we obtained novel Tor2 mutants whose growth was inhibited with
rapamycin. The mutants mimicked nitrogen starvation response upon
addition of rapamycin, which depended on FKBP12. The results suggestthat Tor2 is a possible target of rapamycin in fission yeast.
3P37 Analysis of thyroid disrupting activities of environmental
compounds using various assays
1

Rahman Farhana Babli, 1Yumiko Kudo, 2Akinori Ishihara and 2Kiyoshi

Yamauchi(Graduate School and Engineering1, and Department of Biological
Science, Faculty of Science2, Shizuoka University)
Chlorinated phenol compounds, such as the chlorinated derivatives ofbisphenol A, detected in effluents from paper manufacturing plants. We
investigated the effects of endocrine disrupting chemicals (EDCs), suchas bisphenol A, nonylphenol and their chlorinated derivatives,