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JAEA Reports

Fabrication of rock thin section in the Tono Geoscience Center

Yonaga, Yusuke; Yoshikawa, Kiyotaka*; Shimada, Koji

JAEA-Testing 2020-002, 19 Pages, 2020/05

JAEA-Testing-2020-002.pdf:2.85MB

Rock thin sections are used for instrument analyses such as EPMA, LA-ICP-MS as well as microstructural observations by optical microscope. Fabrication of thin section, reported here, is one of the fundamental techniques in classical and state-of-the-art geological research. This report provides not only general procedure but also some ingenuity, precautions and equipment maintenance with visual exemplification for first-time or inexperienced users in the Tono Geoscience Center.

JAEA Reports

Data-base of bulk chemical compositions and modal compositions of Toki granitic body

Sakai, Toshihiro

JAEA-Data/Code 2018-006, 75 Pages, 2018/07

JAEA-Data-Code-2018-006.pdf:2.9MB
JAEA-Data-Code-2018-006-appendix(CD-ROM).zip:0.87MB

Data of bulk chemical compositions (major elements and trace elements) and/or of modal compositions of the Toki granitic body are compiled as a data-base for the purpose of improving geological and petrological basic information of the Mizunami Underground Research Laboratory Project and the Regional Hydrogeological Study Project. 696 rock samples are collected from the outcrops and boreholes of the Regional Hydrogeological Study Project, and 636 rock samples are collected from the Mizunami Underground Research Laboratory Construction Site. The analysis data of rock samples, as granitic rock samples, intrusive rock samples and crack filling samples, are attached three-dimensional position information to each thesis and report.

JAEA Reports

Investigation and evaluation of sorption and diffusion data for sedimentary rocks and cementitious materials (Report on NUMO-JAEA collaborative research in FY2016-2017) (Joint research)

Hamamoto, Takafumi*; Matsubara, Ryuta*; Shibutani, Sanae*; Suyama, Tadahiro*; Tachi, Yukio

JAEA-Data/Code 2017-014, 31 Pages, 2018/03

JAEA-Data-Code-2017-014.pdf:2.1MB
JAEA-Data-Code-2017-014-appendix(CD-ROM).zip:0.61MB

NUMO and JAEA have developed the methodology of post-closure safety assessment for the geological disposal. For this purpose, NUMO and JAEA have conducted a collaborative research project for developing the safety assessment methodology based on international state of the art knowledge. The present report focuses on investigation of sorption and diffusion data reported and their QA evaluation for updating sorption and diffusion database (SDB and DDB) as the collaborative research project between NUMO and JAEA. This report includes sorption and diffusion data for mainly sedimentary rocks and cement materials. As a result, 1,746 sorption data from 19 references and 593 diffusion data from 25 references were extracted and prepared in the datasheet of SDB and DDB.

Journal Articles

Post-irradiation examination on particle dispersed rock-like oxide fuel

Shirasu, Noriko; Kuramoto, Kenichi*; Yamashita, Toshiyuki; Ichise, Kenichi; Ono, Katsuto; Nihei, Yasuo

Journal of Nuclear Materials, 352(1-3), p.365 - 371, 2006/06

 Times Cited Count:4 Percentile:66.27(Materials Science, Multidisciplinary)

To evaluate irradiation behavior of the ROX fuel, irradiation experiment was carried out using 20% enriched U instead of Pu. Three fuels were prepared; a single phase fuel of YSZ containing UO$$_{2}$$ (U-YSZ), two particle-dispersed fuels of U-YSZ particle in spinel or corundum matrix. The U-YSZ particles were prepared by crashing presintered U-YSZ pellets and by sieving them. These fuels were irradiated in Japan Research Reactor No.3 for 13 cycles, about 300 days. Though many cracks were observed in the pellets by X-ray photographs, significant appearance changes were not observed for all fuel pins. Distribution of typical FPs was analyzed by the $$gamma$$ scanning over the fuel pin. Non-volatile nuclide remained in the fuel pellet. On the other hand, a part of Cs moved to the gaps between the pellets and to the insulators. $$^{134}$$Cs and $$^{137}$$Cs showed different distributions at the plenum. Fuel pellets were taken out from fuel pins without bonding. Spinel decomposition and subsequent restructuring were not observed probably due to low irradiation temperature.

Journal Articles

Evaluation of uncertainty associated with parameters for long-term safety assessments of geological disposal

Yamaguchi, Tetsuji; Minase, Naofumi; Iida, Yoshihisa; Tanaka, Tadao; Nakayama, Shinichi

JAERI-Conf 2005-007, p.150 - 155, 2005/08

no abstracts in English

Journal Articles

Sampling and treatment of rock cores and groundwater under reducing environments of deep underground

Ebashi, Katsuhiro; Yamaguchi, Tetsuji; Tanaka, Tadao; Araki, Kunio*; Saito, Masao*

JAERI-Conf 2005-007, p.242 - 247, 2005/08

no abstracts in English

Journal Articles

Development of Rock-like Oxide Fuel, an innovative nuclear fuel for burning plutonium

Yamashita, Toshiyuki

Seramikkusu, 39(10), p.817 - 821, 2004/10

no abstracts in English

JAEA Reports

Data on mechanical properties of rocks in Japan for subsurface disposal of radioactive waste

Hagiwara, Shigeru*; Sakamoto, Yoshiaki*; Takebe, Shinichi; Nakayama, Shinichi

JAERI-Data/Code 2004-004, 167 Pages, 2004/03

JAERI-Data-Code-2004-004.pdf:10.14MB

no abstracts in English

JAEA Reports

Data on permeability coefficient of rocks in Japan for subsurface disposal of radioactive waste

Hagiwara, Shigeru*; Sakamoto, Yoshiaki*; Takebe, Shinichi; Nakayama, Shinichi

JAERI-Data/Code 2004-003, 159 Pages, 2004/03

JAERI-Data-Code-2004-003.pdf:10.26MB

no abstracts in English

Journal Articles

Quantitative assessment of interfering nuclear reactions of matrix elements in neutron activation analysis

Miyamoto, Yutaka

Hoshaka Bunseki Handobukku, 7 Pages, 2004/00

no abstracts in English

Journal Articles

Irradiation effects on yttria-stabilized Zirconia irradiated with neon ions

Hojo, Tomohiro; Aihara, Jun; Hojo, Kiichi; Furuno, Shigemi*; Yamamoto, Hiroyuki; Nitani, Noriko; Yamashita, Toshiyuki; Minato, Kazuo; Sakuma, Takaaki*

Journal of Nuclear Materials, 319, p.81 - 86, 2003/06

 Times Cited Count:16 Percentile:25.85(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Durability test of irradiated rock-like oxide fuels

Kuramoto, Kenichi; Shirasu, Noriko; Yamashita, Toshiyuki

Journal of Nuclear Materials, 319(1-3), p.180 - 187, 2003/06

 Times Cited Count:8 Percentile:47.38(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

New Fuel ROX: Development of an innovative rock-like oxide fuel for burning plutonium

Yamashita, Toshiyuki

Look Japan, 49(567), P. 24, 2003/06

no abstracts in English

Journal Articles

New technique for the determination of trace elements using multiparameter coincidence spectrometry

Hatsukawa, Yuichi; Toh, Yosuke; Oshima, Masumi; Hayakawa, Takehito; Shinohara, Nobuo; Kushita, Kohei; Ueno, Takashi; Toyoda, Kazuhiro*

Journal of Radioanalytical and Nuclear Chemistry, 255(1), p.111 - 113, 2003/01

 Times Cited Count:12 Percentile:34.91

no abstracts in English

Journal Articles

Studies in the PuO$$_{2}$$-ZrO$$_{2}$$ pseudo-binary phase diagram

Albiol, T.*; Serizawa, Hiroyuki; Arai, Yasuo

Journal of Nuclear Science and Technology, 39(Suppl.3), p.834 - 837, 2002/11

no abstracts in English

Journal Articles

Efforts toward an innovative nuclear fuel "plutonium rock-like oxide fuel"

Yamashita, Toshiyuki

Science & Technology Journal, 11(11), p.54 - 55, 2002/11

About the research activity on plutonium rock-like oxide fuels and their burning in light water reactors, a plain description was given on such items as background, goals, main results, the frame for the research and future perspectives. The note is intended for the general public.

Journal Articles

Neutron activation analysis of rock and plant samples using the facilities at KUR

Miyamoto, Yutaka

Hoshaka Bunseki, (14), p.16 - 22, 2002/05

no abstracts in English

Journal Articles

A High-sensitivity and non-destructive trace element analysis based on multiple $$gamma$$-ray detection

Oshima, Masumi; Toh, Yosuke; Hatsukawa, Yuichi; Hayakawa, Takehito; Shinohara, Nobuo

Journal of Nuclear Science and Technology, 39(4), p.292 - 294, 2002/04

 Times Cited Count:16 Percentile:27.28(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Application of multiparameter coincidence spectrometry using a Ge detectors array to neutron activation analysis

Hatsukawa, Yuichi; Oshima, Masumi; Hayakawa, Takehito; Toh, Yosuke; Shinohara, Nobuo

Nuclear Instruments and Methods in Physics Research A, 482(1-2), p.328 - 333, 2002/04

 Times Cited Count:23 Percentile:17.65(Instruments & Instrumentation)

no abstracts in English

JAEA Reports

Dataset of the relationship between unconfined compressive strength and tensile strength of rock mass

Sugita, Yutaka; Yui, Mikazu

JNC-TN8450 2001-007, 16 Pages, 2002/02

JNC-TN8450-2001-007.pdf:0.78MB

This report summary the dataset of the relationship between unconfined compressive strength and tensile strength of the rock mass described in supporting report 2; repository design and engineering technology of second progress report (H12 report) on research and development for the geological disposal of HLW in Japan.

127 (Records 1-20 displayed on this page)