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Journal Articles

Modeling of coupled processes in full-scale engineered barrier system performance experiment at Horonobe Underground Research Laboratory, Japan

Ono, Hirokazu; Takayama, Yusuke*

Geomechanics for Energy and the Environment, 41, p.100636_1 - 100636_14, 2025/03

https://doi.org/10.1016/j.gete.2025.100636
 Times Cited Count：2 Percentile：48.77(Energy & Fuels)

Journal Articles

Precise intensity measurements in the $$^{14}$$N(n,$$gamma$$)$$^{15}$$N reaction as a $$gamma$$-ray intensity standard up to 11 MeV

Miyazaki, Itaru*; Sakane, Hitoshi*; Takayama, Hirokazu*; Kasaishi, Masafumi*; Tojo, Akinori*; Furuta, Masataka*; Hayashi, Hiroaki*; Suematsu, Osamu*; Narasaki, Hiromichi*; Shimizu, Toshiaki*; et al.

Journal of Nuclear Science and Technology, 45(6), p.481 - 486, 2008/06

https://doi.org/10.3327/jnst.45.481
 Times Cited Count：6 Percentile：37.59(Nuclear Science & Technology)

The intensities of the prompt $$gamma$$ rays from the $$^{14}$$N(n,$$gamma$$)$$^{15}$$N reaction have been precisely measured. As the samples, a liquid nitrogen target and a deuterated melamine (C$$_{3}$$D$$_{6}$$N$$_{6}$$) were used. The previous values widely used as intensity standards agreed with those obtained in this study within 4-5% in the 2-11 MeV region, however, showed a monotonous decrease with the increase of $$gamma$$-ray energy.

Journal Articles

The Development of Melamine-D for the Precise Measurement of Detection Efficiencies of High Energy $$gamma$$-rays

Nakamura, Shoji; Takayama, Hirokazu*; Kawade, Kiyoshi*; Harada, Hideo

JAERI-Conf 2003-006, p.237 - 240, 2003/06

https://jopss.jaea.go.jp/pdfdata/JAERI-Conf-2003-006.pdf

None

Oral presentation

Full-scale engineered barrier system experiment at Horonobe URL; Numerical analysis of coupled thermal-hydrological-mechanical processes

Ono, Hirokazu; Takayama, Yusuke; Nakayama, Masashi

no journal, , 

Full-scale engineered barrier system experiment are being conducted at the G.L. -350 m gallery in the Horonobe Underground Research Laboratory (URL). One of objectives of the experiment is acquiring data concerned with coupled Thermal-Hydrological-Mechanical-Chemical (THMC) processes. These data will be used in order to confirm the performance of engineered barrier system. This study reports a numerical analysis of THM processes.

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