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Sr in cattle bone and tooth samples by inductively coupled plasma mass spectrometryKoarai, Kazuma; Matsueda, Makoto; Aoki, Jo; Yanagisawa, Kayo*; Terashima, Motoki; Fujiwara, Kenso; Kino, Yasushi*; Oka, Toshitaka; Takahashi, Atsushi*; Suzuki, Toshihiko*; et al.
Journal of Analytical Atomic Spectrometry, 36(8), p.1678 - 1682, 2021/08
Times Cited Count：5 Percentile：55.72(Chemistry, Analytical)Rapid analysis of Sr in bone and tooth samples of cattle were achieved by an inductively coupled plasma mass spectrometry (ICP-MS) coupled with mass shift and solid phase extraction techniques. Limit of detection (LOD) in the ICP-MS measurement of 0.1 g samples was lower than that of the radioactivity measurement. Analytical time of the ICP-MS method was reduced from 20 days to 11 hours, compared with the radiometric method. Therefore, the ICP-MS method can be rapid and useful procedure of Sr in small bone and tooth samples derived from terrestrial animals.
Kitamura, Akira; Fujiwara, Kenso; Doi, Reisuke; Yoshida, Yasushi*
JAEA-Data/Code 2012-006, 65 Pages, 2012/07
JAEA-Data-Code-2012-006.pdf:1.72MB
JAEA-Data-Code-2012-006-appendix(CD-ROM).zip:0.19MB
We additionally selected thermodynamic data for solid and gaseous phases of nickel, selenium, zirconium, technetium, thorium, uranium, neptunium, plutonium and americium to our thermodynamic database JAEA-TDB for geological disposal of radioactive waste of high-level and TRU wastes. We thermodynamically obtained equilibrium constant from addition and subtraction of Gibbs free energy of formation, which were selected in the thermochemical database project by the Nuclear Energy Agency in the Organisation for Economic Co-operation and Development. Furthermore, we collected and updated thermodynamic data on iodine, changed master species of technetium(IV), and added thermodynamic data on selenium due to improving reliability of the thermodynamic database. We prepared text files of the updated thermodynamic database (JAEA-TDB) for geochemical calculation programs of PHREEQC, EQ3/6 and Geochemist's Workbench. These text files are contained in the attached CD-ROM and will be available on our Website.
collisions at 
= 200 and 62.4 GeVAdare, A.*; Afanasiev, S.*; Aidala, C.*; Ajitanand, N. N.*; Akiba, Yasuyuki*; Al-Bataineh, H.*; Alexander, J.*; Aoki, Kazuya*; Aphecetche, L.*; Armendariz, R.*; et al.
Physical Review C, 83(6), p.064903_1 - 064903_29, 2011/06
Times Cited Count：184 Percentile：99.44(Physics, Nuclear)Transverse momentum distributions and yields for 
, and 
in collisions at = 200 and 62.4 GeV at midrapidity are measured by the PHENIX experiment at the RHIC. We present the inverse slope parameter, mean transverse momentum, and yield per unit rapidity at each energy, and compare them to other measurements at different collisions. We also present the scaling properties such as 
and 
scaling and discuss the mechanism of the particle production in collisions. The measured spectra are compared to next-to-leading order perturbative QCD calculations.
and Au+Au collisions at 
= 200 GeVAdare, A.*; Afanasiev, S.*; Aidala, C.*; Ajitanand, N. N.*; Akiba, Yasuyuki*; Al-Bataineh, H.*; Alexander, J.*; Aoki, Kazuya*; Aphecetche, L.*; Aramaki, Y.*; et al.
Physical Review C, 83(4), p.044912_1 - 044912_16, 2011/04
Times Cited Count：8 Percentile：49.7(Physics, Nuclear)Measurements of electrons from the decay of open-heavy-flavor mesons have shown that the yields are suppressed in Au+Au collisions compared to expectations from binary-scaled collisions. Here we extend these studies to two particle correlations where one particle is an electron from the decay of a heavy flavor meson and the other is a charged hadron from either the decay of the heavy meson or from jet fragmentation. These measurements provide more detailed information about the interaction between heavy quarks and the quark-gluon matter. We find the away-side-jet shape and yield to be modified in Au+Au collisions compared to collisions.
Kitamura, Akira; Fujiwara, Kenso; Doi, Reisuke; Yoshida, Yasushi*; Mihara, Morihiro; Terashima, Motoki; Yui, Mikazu
JAEA-Data/Code 2009-024, 84 Pages, 2010/03
JAEA-Data-Code-2009-024.pdf:2.84MB
A thermodynamic database was established to develop a thermodynamic database for performance assessment of geological disposal of high-level and TRU wastes. Twenty-four elements (actinides, fission products and their daughters) which are of importance for the performance assessment of geological disposal have been selected. The fundamental plan was in principle based on the guidelines established by the Nuclear Energy Agency in the Organisation for Economic Co-operation and Development (OECD/NEA). Additional unique guidelines were established due to a requirement from the performance assessment to select tentative thermodynamic values obtained from chemical analogues and/or models for elements with insufficient thermodynamic values. Selected thermodynamic data were compiled for geochemical calculation programs.
Kawase, Keigo; Kando, Masaki; Hayakawa, Takehito; Daito, Izuru; Kondo, Shuji; Homma, Takayuki; Kameshima, Takashi; Kotaki, Hideyuki; Chen, L.*; Fukuda, Yuji; et al.
Nuclear Physics Review, 26(Suppl.), p.94 - 99, 2009/07
We constructed MeV- and sub-MeV-photon sources by means of Compton backscattering with a laser light and an electron beam at SPring-8 and KPSI-JAEA. MeV-photon source consists of a continuous-wave optically-pumped far infrared laser and an 8-GeV stored electron beam. Sub-MeV-photon source consists of a Nd:YAG pulse-laser and an 150-MeV electron beam accelerated by a microtron. Both source have been succeeded backscattered photon generation. In this talk, I will present characteristics and future prospects of these photon sources.
Asano, Takashi; Fujiwara, Shigeo; Takahashi, Saburo; Nagatani, Taketeru; Fukuhara, Junichi; Kodani, Yoshiki; Kimura, Takashi; Miura, Yasushi
Proceedings of INMM 50th Annual Meeting (CD-ROM), 10 Pages, 2009/00
JAEA commenced to consider the integrated safeguards (IS) approach for JNC-1 site as the new concept of safeguards for further reduction of influence of facility operation by the safeguards activity. On the other hand, the board of governors of IAEA led the broader conclusion to Japan on June 2004 and safeguards implementation in Japan was transferred to the IS scheme in September 2004. IAEA aimed to improve efficiency of safeguards implementation for the plutonium handling facility by optimization of use of advanced safeguards systems and new safeguards regime without reduction of effectiveness of safeguards. The IS approach for JNC-1 site was developed and implemented on August 2008 after many discussions among IAEA, Japan Safeguards Office (JSGO) and JAEA. This paper shows contributions by JAEA to development of this approach from the operator's view point and influence to the operator by implementation of IS approach.
-ray generation from backward Compton scattering at SPring-8Kawase, Keigo; Arimoto, Yasushi*; Fujiwara, Mamoru; Okajima, Shigeki*; Shoji, Masazumi*; Suzuki, Shinsuke*; Tamura, Kazuhiro*; Yorita, Tetsuhiko*; Okuma, Haruo*
Nuclear Instruments and Methods in Physics Research A, 592(3), p.154 - 161, 2008/07
Times Cited Count：20 Percentile：77.66(Instruments & Instrumentation)A test experimental line at SPring-8 has been constructed for the generation of backward Compton scattered (BCS) -ray by head-on collision between an 8 GeV electron beam and a far-infrared (FIR) laser. For the FIR laser, we use a continuous-wave methanol laser optically pumped by a carbon dioxide (
) laser. The FIR laser output power achieved is 1.6 W at maximum for 118.8 
m lasing; this value is the highest in the case of this type of laser. As a result of the direct measurement, the generated BCS -ray flux was found to be about 
photons/s. This value is consistent with the estimation calculated by taking into account the input laser power and the transmittance of the laser transport system.
Umeda, Koji; Oi, Takao; Osawa, Hideaki; Oyama, Takuya; Oda, Chie; Kamei, Gento; Kuji, Masayoshi*; Kurosawa, Hideki; Kobayashi, Yasushi; Sasaki, Yasuo; et al.
JAEA-Review 2007-050, 82 Pages, 2007/12
JAEA-Review-2007-050.pdf:28.56MB
This report shows the annual report which shows the summarized results and topic outline of each project on geological disposal technology in the fiscal year of 2006.
Yoshikawa, Hideki; Shibata, Masahiro; Sasamoto, Hiroshi; Iijima, Kazuki; Sato, Haruo; Kitamura, Akira; Ishidera, Takamitsu; Fujiwara, Kenso; Kurosawa, Susumu; Xia, X.; et al.
Hoshasei Haikibutsu Anzen Kenkyu Nenji Keikaku (Heisei-13-Nendo
Heisei-17-Nendo) Kenkyu Seika Hokokushu, p.153 - 170, 2006/03
no abstracts in English
Shimo, Michito*; Yamamoto, Hajime*; Kumamoto, So*; Fujiwara, Yasushi*; Ono, Makoto*
JNC TJ5400 2004-004, 120 Pages, 2005/02
JNC-TJ5400-2004-004.pdf:78.08MBJNC-TJ5400-2004-004(errata).pdf:0.08MB
The Horonobe underground research project has been carried out by Japan Nuclear Cycle Development Institute to study the geological environment of sedimentary rocks in deep underground. The objectives of this study are to develop a geological environment model, which incorporate current findings and latest data obtained through the geological, geophysical, and borehole investigations at Horonobe site, and to predict the hydrological and geochemical impacts caused by the URL shaft excavation to the surrounding area.
Yamamoto, Takuya*; Shimo, Michito*; Fujiwara, Yasushi*; Hattori, Hiromichi*; Nago, Makito*; Tadokoro, Teruo*; Nakagaki, Shinichi*
JNC TJ5400 2005-006, 795 Pages, 2004/03
JNC-TJ5400-2005-006.pdf:96.75MBJNC-TJ5400-2005-006(errata).pdf:0.08MB
HDB-8 (470 m deep Borehole) was drilled at Hokushin Area of Horonobe Town, Teshio District, Hokkaido, Japan in order to investigate the characteristic of deep underground.
Yamamoto, Takuya*; Shimo, Michito*; Fujiwara, Yasushi*; Hattori, Hiromichi*; Nago, Makito*; Tadokoro, Teruo*; Nakagaki, Shinichi*
JNC TJ5400 2005-005, 704 Pages, 2004/03
JNC-TJ5400-2005-005.pdf:70.08MBJNC-TJ5400-2005-005(errata).pdf:0.08MB
HDB-7 (520 m deep Borehole) was drilled at Hokushin Area of Horonobe Town, Teshio District, Hokkaido, Japan in order to investigate the characteristic of deep underground.
Yamamoto, Takuya*; Shimo, Michito*; Fujiwara, Yasushi*; Hattori, Hiromichi*; Nago, Makito*; Tadokoro, Teruo*; Nakagaki, Shinichi*
JNC TJ5400 2005-004, 1182 Pages, 2004/03
JNC-TJ5400-2005-004.pdf:129.98MBJNC-TJ5400-2005-004(errata).pdf:0.08MB
HDB-6 (620 m deep Borehole) was drilled at Hokushin Area of Horonobe Town, Teshio District, Hokkaido, Japan in order to investigate the characteristic of deep underground.
Yamamoto, Takuya*; Shimo, Michito*; Fujiwara, Yasushi*; Hattori, Hiromichi*; Nago, Makito*; Tadokoro, Teruo*; Nakagaki, Shinichi*
JNC TJ5400 2005-003, 513 Pages, 2004/03
JNC-TJ5400-2005-003.pdf:41.67MBJNC-TJ5400-2005-003(errata).pdf:0.08MB
HDB-6 (620 m deep Borehole), HDB-7 (520 m deep Borehole) and HDB-8 (470 m deep borehole) were drilled at Hokushin Area of Horonobe Town, Teshio District, Hokkaido, Japan in order to investigate the characteristic of deep underground.
Fujiwara, Satoru; Matsumoto, Fumiko*; Yonezawa, Yasushige*
Journal of Molecular Biology, 331(1), p.21 - 28, 2003/08
Times Cited Count：45 Percentile：59.1(Biochemistry & Molecular Biology)The kinetic process of the fibril formation of hen egg white lysozyme (HEWL) in 90% ethanol in various salt concentrations has been investigated with time-resolved neutron scattering. It was shown that by addition of NaCl in a range between 0.3 mM and 1.0 mM, gelation occurred, and this gelation proceed through a two-step process; the lateral association of the protofilaments formed by HEWL, followed by the cross-linking of these fibrils formed. Both the structures of the fibrils and the rate of the gelation depended on NaCl concentration. Above 2 mM NaCl, precipitation occurred because of the formation of amorphous aggregates. Sensitivity of the aggregated structures to salt concentration suggests that electrostatic interaction plays an essential role in the formation of these structures. The structural diversity both in the fibrils and the aggregated structures of the fibrils can be interpreted in terms of the difference in the degree of the electrostatic shielding at different salt concentrations.
HeAkimune, Hidetoshi*; Yamagata, Tamio*; Nakayama, Shintaro*; Arimoto, Yasushi*; Fujiwara, Mamoru; Fushimi, Kenichi*; Hara, Keigo*; Ota, Masahisa*; Shiokawa, Atsuko*; Tanaka, Masayoshi*; et al.
Physical Review C, 67(5), p.051302_1 - 051302_4, 2003/05
Times Cited Count：27 Percentile：80.33(Physics, Nuclear)no abstracts in English
Yamamoto, Takuya*; Shimo, Michito*; Fujiwara, Yasushi*; Hattori, Hiromichi*; Nago, Makito*; Tadokoro, Teruo*; Kuji, Masayoshi*
JNC TJ5420 2004-005, 855 Pages, 2003/03
JNC-TJ5420-2004-005.pdf:76.83MBJNC-TJ5420-2004-005(errata).pdf:0.08MB
Three 520m deep boreholes were drilled at Horonobe Town, Teshio District, Hokkaido in order to investigate the characteristics of deep sedimentary rock in the Horonobe Underground Research Program. The results of the investigations were applied to the model construction and to the numerical analysis. The model consists of geological, mechanical, hydrological and geo-chemical characteristics. This report summarizes the results of the boring and investigations of HDB-5 (Horonobe Deep Borehole #5).
Yamamoto, Takuya*; Shimo, Michito*; Fujiwara, Yasushi*
JNC TJ5420 2004-004, 788 Pages, 2003/03
JNC-TJ5420-2004-004.pdf:73.2MBJNC-TJ5420-2004-004(errata).pdf:0.08MB
Three 520m deep boreholes were drilled at Horonobe Town, Teshio District, Hokkaido in order to investigate the characteristics of deep sedimentary rock in the Horonobe Underground Research Program. The results of the investigations were applied to the model construction and to the numerical analysis. The model consists of geological, mechanical, hydrological and geo-chemical characteristics. This report summarizes the results of the boring and investigations of HDB-4 (Horonobe Deep Borehole #4).
Yamamoto, Takuya*; Shimo, Michito*; Fujiwara, Yasushi*
JNC TJ5420 2004-003, 918 Pages, 2003/03
JNC-TJ5420-2004-003.pdf:86.41MBJNC-TJ5420-2004-003(errata).pdf:0.08MB
Three 520m deep boreholes were drilled at Horonobe Town, Teshio District, Hokkaido in order to investigate the characteristics of deep sedimentary rock in the Horonobe Underground Research Program. The results of the investigations were applied to the model construction and to the numerical analysis. The model consists of geological, mechanical, hydrological and geo-chemical characteristics. This report summarizes the results of the boring and investigations of HDB-3 (Horonobe Deep Borehole #3).
