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Tanaka, Shoya*; Nishimura, Nobuya*; Minato, Futoshi
JAEA-Conf 2023-001, p.132 - 137, 2024/02
Nucleosynthesis by the rapid neutron-capture process (
-process) produces elements heavier than iron via neutron-rich nuclides, observed in the solar system and stars with various metallicities. In the -process, fission plays a fundamental role through bridging heavy element abundances with light element ones and by shaping the final -abundance distribution. Nevertheless, due to the difficulty of experimental approaches, most of the fission data available for -process calculations are based on theoretical predictions with phenomenological models. In this study, we focused on the transition of fission mode from asymmetric to symmetric in neutron-rich isotopes, which has been suggested in recent experiments for fermium isotopes. We investigated the fission of neutron-rich nuclei by a theoretical calculation based on the dynamical model and employed Langevin equations. Furthermore, we calculated fission fragment mass yields and prompt neutron emissions by combining Langevin calculations with a statistical model.
bimetallic Ni/Fe
nanoparticles; Implications towards Tc(VII) removalMaamoun, I.; Tokunaga, Kohei; Dohi, Terumi; Kanno, Futoshi*; Falyouna, O.*; Eljamal, O.*; Tanaka, Kazuya
Frontiers in Nuclear Engineering (Internet), 2, p.1142823_1 - 1142823_17, 2023/03
Recently, the rapid development of nuclear power technologies and the continuous energy demand around the world exhibited massive amounts of contaminated water with radionuclides. Technetium-99 (
Tc) is one of the long-lived radionuclides with a highly mobile anionic form (Tc(VII)) in aqueous solutions. Hence, the rapid and efficient Tc(VII) removal from radioactive water has emerged as a challenging issue. In this work, bimetallic nickel/iron nanoparticles (Ni/Fe) were prepared to enhance the immobilization of rhenium (Re(VII)) from aqueous solutions, as the surrogate of Tc(VII).
Kimura, Nobuaki; Imaizumi, Tomomi; Takemoto, Noriyuki; Tanimoto, Masataka; Saito, Takashi; Hori, Naohiko; Tsuchiya, Kunihiko; Romanova, N. K.*; Gizatulin, S.*; Martyushov, A.*; et al.
JAEA-Technology 2012-012, 34 Pages, 2012/06
JAEA-Technology-2012-012.pdf:12.91MB
Si semiconductor production by Neutron Transmutation Doping (NTD) method using the Japan Materials Testing Reactor (JMTR) has been investigated in Neutron Irradiation and Testing Reactor Center, Japan Atomic Energy Agency (JAEA) in order to expand industry use. As a part of investigations, irradiation test of silicon ingot for development of NTD-Si with high quality was planned using WWR-K in Institute of Nuclear Physics (INP), National Nuclear Center of Republic of Kazakhstan (NNC-RK) based on one of specific topics of cooperation (STC), Irradiation Technology for NTD-Si (STC No.II-4), on the implementing arrangement between NNC-RK and the JAEA for "Nuclear Technology on Testing/Research Reactors" in cooperation in research and development in nuclear energy and technology. As for the irradiation test, Si rotating device was fabricated in JAEA, and the fabricated device was transported with irradiation specimens from JAEA to INP-NNC-RK. This report described the design, the fabrication, the performance test of the Si rotating device and transportation procedures.
Taguchi, Chiho; Taura, Futoshi*; Tamada, Taro; Shoyama, Yoshinari; Shoyama, Yukihiro*; Tanaka, Hiroyuki*; Kuroki, Ryota; Morimoto, Satoshi*
Acta Crystallographica Section F, 64(3), p.217 - 220, 2008/03
Times Cited Count：3 Percentile：35.32(Biochemical Research Methods)Tojima, Futoshi*; Takenoshita, Yoshihisa*; Shirao, Tsukasa*; Nagatani, Takeshi*; Oe, Masakazu*; Ueno, Keiichiro*; Hase, Yoshihiro; Tanaka, Atsushi
JAEA-Review 2007-060, JAEA Takasaki Annual Report 2006, P. 73, 2008/03
no abstracts in English
Tojima, Futoshi*; Shirao, Tsukasa*; Ueno, Keiichiro*; Oe, Masakazu*; Yasuniwa, Makoto*; Hase, Yoshihiro; Tanaka, Atsushi
JAEA-Review 2006-042, JAEA Takasaki Annual Report 2005, P. 83, 2007/02
no abstracts in English
Maamoun, I.*; Tanaka, Kazuya; Dohi, Terumi; Kanno, Futoshi*; Tsubaki, Shuntaro*; Iguram, Noriyuki*
no journal, ,
Tojima, Futoshi*; Takenoshita, Yoshihisa*; Nagatani, Takeshi*; Shirao, Tsukasa*; Oe, Masakazu*; Ueno, Keiichiro*; Tanaka, Atsushi; Hase, Yoshihiro
no journal, ,
no abstracts in English
Kato, Atsushi; Ide, Akihiro*; Shibata, Akihiro*; Ishizaki, Miku*; Tanaka, Futoshi*; Sakaba, Hiroshi*; Nishizaki, Chihiro*; Sawairi, Tsuyoshi*
no journal, ,
Sodium fast reactor needs long time decay heat removal compared with Light water reactor. This reports trial evaluation of dynamic PRA application on Sodium cooled fast reactor in terms of decay heat. Thanks to this application, dominant risk factor could be cleared out.
Masui, Kenji; Yanagibashi, Futoshi; Kuno, Takehiko; Tanaka, Kenji
no journal, ,
no abstracts in English
Tojima, Futoshi*; Yasuniwa, Makoto*; Shirao, Tsukasa*; Oe, Masakazu*; Ueno, Keiichiro*; Tanaka, Atsushi; Hase, Yoshihiro
no journal, ,
no abstracts in English
