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Journal Articles

Corrigendum to "Visualization of the working fluid in a flat-plate pulsating heat pipe by neutron radiography" [International Journal of Heat and Mass Transfer 185 (2022) 122336]

Yasuda, Yosuke*; Matsumoto, Yoshihiro*; Shinohara, Takenao; Nabeshima, Fumika*; Horiuchi, Keisuke*; Nagai, Hiroki*

International Journal of Heat and Mass Transfer, 213, p.124291_1 - 124291_2, 2023/10

Journal Articles

Development plan for coupling technology between high temperature gas-cooled reactor HTTR and hydrogen production facility, 1; Overview of the HTTR heat application test plan to establish high safety coupling technology

Nomoto, Yasunobu; Mizuta, Naoki; Morita, Keisuke; Aoki, Takeshi; Okita, Shoichiro; Ishii, Katsunori; Kurahayashi, Kaoru; Yasuda, Takanori; Tanaka, Masato; Isaka, Kazuyoshi; et al.

Proceedings of 30th International Conference on Nuclear Engineering (ICONE30) (Internet), 7 Pages, 2023/05

Journal Articles

Development plan for coupling technology between high temperature gas-cooled reactor HTTR and Hydrogen Production Facility, 2; Development plan for coupling equipment between HTTR and Hydrogen Production Facility

Mizuta, Naoki; Morita, Keisuke; Aoki, Takeshi; Okita, Shoichiro; Ishii, Katsunori; Kurahayashi, Kaoru; Yasuda, Takanori; Tanaka, Masato; Isaka, Kazuyoshi; Noguchi, Hiroki; et al.

Proceedings of 30th International Conference on Nuclear Engineering (ICONE30) (Internet), 6 Pages, 2023/05

Journal Articles

Measurement of fluorine distribution in carious enamel around 1.5-year aged fluoride-containing materials

Komatsu, Hisanori*; Kojima, Kentaro*; Funato, Yoshiki*; Matsuda, Yasuhiro*; Kijimura, Taiki*; Okuyama, Katsushi*; Yamamoto, Hiroko*; Iwami, Yukiteru*; Ebisu, Shigeyuki*; Nomachi, Masaharu*; et al.

JAEA-Review 2011-043, JAEA Takasaki Annual Report 2010, P. 85, 2012/01

Journal Articles

Study on defects in H$$^+$$ ion implanted B2 type Fe-Al alloy using slow positron beam

Komagata, Eiichi*; Kawasuso, Atsuo; Yabuuchi, Atsushi*; Maekawa, Masaki; Batchuluun, C.*; Yasuda, Keisuke*; Ishigami, Ryoya*; Kume, Kyo*; Iwase, Akihiro*; Hori, Fuminobu*

Physics Procedia, 35, p.75 - 79, 2012/00

 Times Cited Count:2 Percentile:62.57

Fe48-at.% Al alloy were implanted with 50 keV H$$^+$$ ions to the fluence of 3$$times$$10$$^{16}$$ and 1$$times$$10$$^{18}$$ /cm$$^2$$ at room temperature. Positron annihilation Doppler broadening and lifetime measurements for these alloys have been carried out using slow positron beam apparatus with an energy range of 0.2 to 30.2 keV. The positron annihilation S-parameter decreased by H$$^+$$ ion irradiation. Also the positron lifetimes for hydrogen deposited region in the alloy decreased by the irradiation. These results show that implanted H atoms were trapped by vacancy type defects.

Journal Articles

Fluorine analysis of human enamel around fluoride-containing materials under different pH-cycling by $$mu$$-PIGE/PIXE system

Komatsu, Hisanori*; Yamamoto, Hiroko*; Matsuda, Yasuhiro*; Kijimura, Taiki*; Kinugawa, Michihiko*; Okuyama, Katsushi*; Nomachi, Masaharu*; Yasuda, Keisuke*; Sato, Takahiro; Oikawa, Masakazu*

Nuclear Instruments and Methods in Physics Research B, 269(20), p.2274 - 2277, 2011/10

 Times Cited Count:18 Percentile:78.97(Instruments & Instrumentation)

Journal Articles

Microbeam irradiation facilities for radiobiology in Japan and China

Kobayashi, Yasuhiko; Funayama, Tomoo; Hamada, Nobuyuki*; Sakashita, Tetsuya; Konishi, Teruaki*; Imaseki, Hitoshi*; Yasuda, Keisuke*; Hatashita, Masanori*; Takagi, Keiichi*; Hatori, Satoshi*; et al.

Journal of Radiation Research, 50(Suppl.A), p.A29 - A47, 2009/03

 Times Cited Count:37 Percentile:72.85(Biology)

Journal Articles

Adsorption of Db and its homologues Nb and Ta, and the pseudo-homologue Pa on anion-exchange resin in HF solution

Tsukada, Kazuaki; Haba, Hiromitsu*; Asai, Masato; Toyoshima, Atsushi; Akiyama, Kazuhiko*; Kasamatsu, Yoshitaka; Nishinaka, Ichiro; Ichikawa, Shinichi; Yasuda, Kenichiro; Miyamoto, Yutaka; et al.

Radiochimica Acta, 97(2), p.83 - 89, 2009/02

 Times Cited Count:20 Percentile:77.91(Chemistry, Inorganic & Nuclear)

Anion-exchange chromatography of element 105, dubnium (Db), produced in the $$^{248}$$Cm($$^{19}$$F, 5n)$$^{262}$$Db reaction is investigated together with the homologues Nb and Ta, and the pseudo-homologue Pa in 13.9 M hydrofluoric acid (HF) solution. The distribution coefficient (K$$_{d}$$) of Db on an anion-exchange resin is successfully determined by running cycles of the 1702 chromatographic column separations. The result clearly indicates that the adsorption of Db on the resin is significantly different from that of the homologues and that the adsorption of anionic fluoro complexes of these elements decreases in the sequence of Ta $$approx$$ Nb $$>$$ Db $$geq$$ Pa.

Journal Articles

Absolute measurements of He in metals using chemical treatments

Ito, Yoshifumi*; Batchuluun, C.*; Yasuda, Keisuke*; Ishigami, Ryoya*; Endo, Nobuyuki*

Heisei-18-Nendo Zaidan Hojin Wakasawan Enerugi Kenkyu Senta Kenkyu Seika Hokokushu, 9, p.27 - 30, 2007/09

GC/MS (Gas Chromatography/Mass Spectrometer) with the help of Chemical treatments has been applied to measure amount of helium (He) atoms in metals. Metal samples of cupper (Cu) contained He atoms were prepared using a 200kV ion implantation machine. The samples were solved in 0.5cc volume of 20% nitric acid in a H type reaction tube filled with nitrogen gases at 1 atmospheric pressure and He atoms in Cu metal were exhausted completely into the nitrogen gases. He analysis using GC/MS reveals that the metals contained 10$$^{16}$$ to 10$$^{17}$$ atoms of He. The He signal intensity and He ions implanted to the metals revealed good proportional relation.

Journal Articles

Fluoride complexation of element 104, rutherfordium

Haba, Hiromitsu*; Tsukada, Kazuaki; Asai, Masato; Toyoshima, Atsushi; Akiyama, Kazuhiko; Nishinaka, Ichiro; Hirata, Masaru; Yaita, Tsuyoshi; Ichikawa, Shinichi; Nagame, Yuichiro; et al.

Journal of the American Chemical Society, 126(16), p.5219 - 5224, 2004/04

 Times Cited Count:43 Percentile:72.54(Chemistry, Multidisciplinary)

Fluoride complexation of element 104, rutherfordium (Rf), produced in the $$^{248}$$Cm($$^{18}$$O,5n)$$^{261}$$Rf reaction has been studied by anion-exchange chromatography on an atom-at-a-time scale. The anion-exchangechromatographic behavior of Rf was investigated in 1.9-13.9 M hydrofluoric acid together with those of the group-4 elements Zr and Hf produced in the $$^{18}$$O-induced reactions on Ge and Gd targets, respectively. It was found that the adsorption behavior of Rf on anion-exchange resin is quite different from those of Zr and Hf, suggesting the influence of relativistic effect on the fluoride complexation of Rf.

JAEA Reports

The Investigation of Uplift in Japan during Quaternary Period

Takano, Toyoji*; Fuse, Keisuke*; Saito, Akira*; Sato, Yoshikazu*; Sakuma, Koji*; Yasuda, Kenya*

JNC TJ7420 2005-019, 782 Pages, 1999/12

no abstracts in English

JAEA Reports

None

*; Fuse, Keisuke*; *; Yasuda, Kenya*

PNC TJ7454 97-001, 536 Pages, 1997/03

PNC-TJ7454-97-001.pdf:13.9MB

no abstracts in English

Oral presentation

Evaluation method of radiation irradiation to space solar cell for international standardization

Imaizumi, Mitsuru*; Saito, Masashi*; Sato, Shinichiro; Yasuda, Keisuke*

no journal, , 

no abstracts in English

Oral presentation

Measurement of fluorine distribution in tooth substances by NRA, 10

Komatsu, Hisanori*; Kojima, Kentaro*; Funato, Yoshiki*; Matsuda, Yasuhiro*; Yamamoto, Hiroko*; Nomachi, Masaharu*; Sugaya, Yorihito*; Yasuda, Keisuke*; Sato, Takahiro; Koka, Masashi

no journal, , 

no abstracts in English

Oral presentation

Measurement of fluorine distribution in tooth dubstances by NRA, 11

Komatsu, Hisanori*; Matsuda, Yasuhiro*; Oki, Saiko*; Hashimoto, Naoki*; Okuyama, Katsushi*; Yamamoto, Hiroko*; Nomachi, Masaharu*; Sugaya, Yorihito*; Yasuda, Keisuke*; Sato, Takahiro; et al.

no journal, , 

no abstracts in English

Oral presentation

Diffusion of fluorine from fluoride-containing material in decalcified enamel

Matsuda, Yasuhiro*; Okuyama, Katsushi*; Komatsu, Hisanori*; Oki, Saiko*; Hashimoto, Naoki*; Sano, Hidehiko*; Yamamoto, Hiroko*; Iwami, Yukiteru*; Hayashi, Mikako*; Nomachi, Masaharu*; et al.

no journal, , 

no abstracts in English

Oral presentation

Development of large-scale hydrogen production technology utelizing very high temperature, 1-3; Test plan for developing coupling technology between HTTR and hydrogen production facility

Nomoto, Yasunobu; Mizuta, Naoki; Morita, Keisuke; Aoki, Takeshi; Okita, Shoichiro; Ishii, Katsunori; Kurahayashi, Kaoru; Yasuda, Takanori; Tanaka, Masato; Isaka, Kazuyoshi; et al.

no journal, , 

no abstracts in English

Oral presentation

Development of large-scale hydrogen production technology utilizing very high temperature, 2-2; Designs of secondary helium cooling equipment for HTTR-Heat Application Test Facility

Ishii, Katsunori; Mizuta, Naoki; Morita, Keisuke; Aoki, Takeshi; Kurahayashi, Kaoru; Yasuda, Takanori; Noguchi, Hiroki; Nomoto, Yasunobu; Shimizu, Atsushi; Iigaki, Kazuhiko; et al.

no journal, , 

no abstracts in English

18 (Records 1-18 displayed on this page)
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