Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Hasemi, Hiroyuki; Takahashi, Ryuta*; Yamauchi, Yasuhiro*; Ishikado, Motoyuki*; Kawamura, Seiko; Komine, Ryota
JPS Conference Proceedings (Internet), 41, p.011003_1 - 011003_5, 2024/03
Oikawa, Kenichi; Sato, Hirotaka*; Watanabe, Kenichi*; Su, Y. H.; Shinohara, Takenao; Kai, Tetsuya; Kiyanagi, Yoshiaki*; Hasemi, Hiroyuki
Journal of Physics; Conference Series, 2605, p.012013_1 - 012013_6, 2023/10
GdMizuyama, Kazuhito; Iwamoto, Nobuyuki; Iwamoto, Osamu; Hasemi, Hiroyuki*; Kino, Koichi*; Kimura, Atsushi; Kiyanagi, Yoshiaki*
EPJ Web of Conferences, 146, p.11042_1 - 11042_4, 2017/09
Times Cited Count：2 Percentile：78.04(Nuclear Science & Technology)Gadolinium has been used as neutron-absorbing material in a thermal reactor since have large thermal neutron capture cross sections. Nevertheless, there is a discrepancy between RPI data and JENDL-4.0 data for 
Gd. The criticality in the reactor is very sensitive to the capture cross section. The RPI data made the criticality of Gd-loaded thermal systems in ICSBEP overestimated. Recently, the neutron capture cross sections of Gd were measured by the neutron time-of-flight (TOF) method using the Accurate Neutron-Nucleus Reaction measurement Instrument (ANNRI) in the J-PARC/MLF. The pulsed neutron beam from the Japan Spallation Neutron Source (JSNS) was used with a double-bunch structure in this measurement, since the incident proton beam is normally delivered in a double-bunch scheme in the J-PARC. In addition to this, it is necessary to take into account the energy resolution of the pulsed neutron beam at the JSNS for the accurate derivation of resolved resonance parameters. In this study, using the least-squares multilevel R-matrix code REFIT modified to include the double bunch structure and the resolution function for the ANNRI, we fitted the calculated capture cross sections of Gd to the experimental data at the ANNRI. We derived the resonance parameters for some low-lying resonances of the two Gd isotopes.
Kai, Tetsuya; Furuta, Etsuko*; Ishihara, Sachiko*; Hasemi, Hiroyuki*; Shinohara, Takenao; Harada, Masahide; Oikawa, Kenichi; Oi, Motoki; Segawa, Mariko; Iikura, Hiroshi; et al.
no journal, ,
The authors report status of the J-PARC neutron imaging beam-line and a result of cadmium distribution imaging in oil paints by utilizing the neutron transmission ratio of cadmium exhibits local minimum at 0.2 eV as an example of neutron resonance imaging technique. The measurement was carried out by using oil paints labeled cadmium yellow, vanadium yellow, cadmium orange, cadmium red and two kinds of cadmium green. Each oil paint was put on a 15
15 mm aluminum plate, and then was dried. Contrasts were recognized for all oil paint in a conventional neutron radiograph of the samples, while no contrasts were found in the neutron transmission image of 0.2 eV at the positions of vanadium yellow and one of cadmium green. It was found that a distribution of cadmium in oil paints was well demonstrated by the neutron resonance imaging.
Hasemi, Hiroyuki; Nakatani, Takeshi*; Inamura, Yasuhiro; Moriyama, Kentaro*
no journal, ,
no abstracts in English
Hasemi, Hiroyuki; Tatsumi, Kazuyoshi; Sato, Hirotaka*; Kamiyama, Takashi*
no journal, ,
no abstracts in English
Hasemi, Hiroyuki; Inamura, Yasuhiro; Moriyama, Kentaro*
no journal, ,
no abstracts in English
Hasemi, Hiroyuki; Tsuchikawa, Yusuke; Kai, Tetsuya; Harada, Masahide; Oikawa, Kenichi; Shinohara, Takenao
no journal, ,
Hasemi, Hiroyuki; Tatsumi, Kazuyoshi; Sato, Hirotaka*; Kamiyama, Takashi*
no journal, ,
no abstracts in English
Hasemi, Hiroyuki; Inamura, Yasuhiro; Moriyama, Kentaro*
no journal, ,
no abstracts in English
