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Okudaira, Takuya; Shimizu, Hirohiko*; Kitaguchi, Masaaki*; Hirota, Katsuya*; Haddock, C. C.*; Ito, Ikuya*; Yamamoto, Tomoki*; Endo, Shunsuke*; Ishizaki, Kohei*; Sato, Takumi*; et al.
EPJ Web of Conferences, 219, p.09001_1 - 09001_6, 2019/12
Parity violating effects enhanced by up to 10 times have been observed in several neutron induced compound nuclei. There is a theoretical prediction that time reversal (T) violating effects can also be enhanced in these nuclei implying that T-violation can be searched for by making very sensitive measurements. However, the enhancement factor has not yet been measured in all nuclei. The angular distribution of the (n,) reaction was measured with La by using a germanium detector assembly at J-PARC, and the enhancement factor was obtained. From the result, the measurement time to achieve the most sensitive T-violation search was estimated as 1.4 days, and a 40% polarized La target and a 70% polarized He spin filter whose thickness is 70 atmcm are needed. Therefore high quality He spin filter is developed in JAEA. The measurement result of the (n,) reaction at J-PARC and the development status of the He spin filter will be presented.
Tanaka, Shoya; Aritomo, Yoshihiro*; Miyamoto, Yuya*; Hirose, Kentaro; Nishio, Katsuhisa
Physical Review C, 100(6), p.064605_1 - 064605_6, 2019/12
Times Cited Count:13 Percentile:79.29(Physics, Nuclear)Fission fragment mass distributions of U, Np, and Pu are studied using the Langevin approach in the widely excitation energy range as = 15-55 MeV. In the present calculation, neutron emission before fission, so called multichance fission, was introduced. The calculated results well demonstrated the experimental data, which shows the double-peak structure up to the highest excitation energies and the clear dependence on the initial fissioning nuclides. The trend is nicely correlated with the neutron binding energy of the compound nucleus that dominates the neutron emission probability before fission.
Koike, Takeshi*; Hasegawa, Shoichi; Hayakawa, Shuhei*; Hosomi, Kenji; Ichikawa, Yudai; Imai, Kenichi; Sako, Hiroyuki; Sato, Susumu; Sugimura, Hitoshi; Tamura, Hirokazu; et al.
AIP Conference Proceedings 2130, p.020011_1 - 020011_9, 2019/07
Times Cited Count:2 Percentile:73.22(Physics, Nuclear)Yang, S. B.*; Ekawa, Hiroyuki; Hasegawa, Shoichi; Hayakawa, Shuhei; Hosomi, Kenji; Ichikawa, Yudai; Imai, Kenichi; Sako, Hiroyuki; Sato, Susumu; Tanida, Kiyoshi; et al.
Physical Review Letters, 120(13), p.132505_1 - 132505_5, 2018/03
Times Cited Count:8 Percentile:54.37(Physics, Multidisciplinary)Honda, Ryotaro*; Hasegawa, Shoichi; Hayakawa, Shuhei; Hosomi, Kenji; Ichikawa, Yudai; Imai, Kenichi; Nagamiya, Shoji; Sako, Hiroyuki; Sato, Susumu; Sugimura, Hitoshi; et al.
Physical Review C, 96(1), p.014005_1 - 014005_23, 2017/07
Times Cited Count:14 Percentile:73.79(Physics, Nuclear)Nagae, Tomofumi*; Ekawa, Hiroyuki; Hasegawa, Shoichi; Hosomi, Kenji; Ichikawa, Yudai; Imai, Kenichi; Sako, Hiroyuki; Sato, Susumu; Sugimura, Hitoshi; Tanida, Kiyoshi; et al.
Proceedings of Science (Internet), 281, p.038_1 - 038_7, 2017/05
Sanetullaev, A.*; Tsang, M. B.*; Lynch, W. G.*; Lee, J.*; Bazin, D.*; Chan, K. P.*; Coupland, D.*; Hanzl, V.*; Hanzlova, D.*; Kilburn, M.*; et al.
Physics Letters B, 736, p.137 - 141, 2014/09
Times Cited Count:15 Percentile:69.79(Astronomy & Astrophysics)no abstracts in English
Hayakawa, Takehito; Iwamoto, Nobuyuki; Shizuma, Toshiyuki; Kajino, Toshitaka*; Umeda, Hideyuki*; Nomoto, Kenichi*
Nuclear Physics A, 758, p.525c - 528c, 2005/07
no abstracts in English
Oigawa, Hiroyuki
Genshiryoku eye, 49(7), p.74 - 77, 2003/07
An International Symposium on Accelerator Driven Transmutation System (ADS) and Asia ADS Network Initiative was held on March 24 and 25, 2003 by JAERI, Kyoto University, Osaka University, Tokyo Institute of Technology, and KEK. In the symposium, representatives of Japan, USA, Europe, Korea, and China presented their current status and future perspectives of ADS development, and discussion was held about the future international collaboration, especially for activation of interactions among Asian countries, and the promotion of interdisciplinary synergy between nuclear physics and nuclear engineering.
Iwamoto, Akira; Yoshida, Tadashi; Takeuchi, Suehiro
JAERI-Conf 2001-014, 174 Pages, 2001/11
no abstracts in English
Joint Project Team of JAERI and KEK
JAERI-Tech 2000-003, p.99 - 0, 2000/02
no abstracts in English
Chiba, Satoshi
JAERI-Conf 99-015, p.138 - 0, 2000/01
no abstracts in English
Takeuchi, Suehiro; Matsuda, Makoto; Minehara, Eisuke; Sugimoto, Masayoshi; Sawamura, Masaru; Nagai, Ryoji; Kikuzawa, Nobuhiro; Nishimori, Nobuyuki; Ouchi, Nobuo; Kusano, Joichi; et al.
Proc. of 8th Workshop on RF Superconductivity, 1, p.233 - 236, 1998/00
no abstracts in English
*;
PNC TN9410 96-102, 40 Pages, 1996/04
In designing the shield plug of LMFBR, it is important to evaluate the thermal response between the cover gas thermal-hydraulics and the temperature fields of the shield plug at the same time. Based on the experiments which were performed by OEC, the natural convection and the thermal radiation in the cover gas layer were calculated with the structure simulating the shield plug in a detail two-dimensional model. The calculations were carried out for 8 kinds of experimental RUNs using a FLUSH code. The main results were as follows: (1)For these 8 kinds of experimental RUNs, the velocity and the temperature distributions in the cover gas layer were presented. The radial and axial temperature distributions in the rotating plug were also presented, which were difficult to measure by the experiments. (2)The boundary surface temperature between the cover gas layer and the rotating plug had the same tendencies and the calculated average temperatures on the boundary surface had good agreements with the experimental data. The average relative deviations from experimental values were less than 1.3%. (3)The natural convection of the cover gas enhanced the temperature distributions in the structure. The effects of thermal radiation on the heat transfer was relatively small and it can be neglected when the temperature of the heated aluminum disk is less than 400C.
JAERI-M 93-174, 174 Pages, 1993/09
no abstracts in English
JAERI-M 92-124, 204 Pages, 1992/09
no abstracts in English
JAERI-M 91-170, 185 Pages, 1991/10
no abstracts in English
Iwamoto, Akira; Ikezoe, Hiroshi; Oshima, Masumi
JAERI-M 91-115, 69 Pages, 1991/07
no abstracts in English
Kaneko, Yoshihiko; Mizumoto, Motoharu; ; Nakahara, Yasuaki; Iwamoto, Akira; Funahashi, Satoru; ; Takeda, Tatsuoki; Hoshi, Michio; Shinohara, Nobuo; et al.
JAERI-M 91-095, 137 Pages, 1991/06
no abstracts in English
JAERI-M 90-139, 230 Pages, 1990/09
no abstracts in English