Sodium-cooled Fast Reactors

Ohshima, Hiroyuki; Morishita, Masaki*; Aizawa, Kosuke; Ando, Masanori; Ashida, Takashi; Chikazawa, Yoshitaka; Doda, Norihiro; Enuma, Yasuhiro; Ezure, Toshiki; Fukano, Yoshitaka; et al.

Sodium-cooled Fast Reactors; JSME Series in Thermal and Nuclear Power Generation, Vol.3, 631 Pages, 2022/07

https://shop.elsevier.com/books/sodium-cooled-fast-reactors/morishita/978-0-12-824076-2

This book is a collection of the past experience of design, construction, and operation of two reactors, the latest knowledge and technology for SFR designs, and the future prospects of SFR development in Japan. It is intended to provide the perspective and the relevant knowledge to enable readers to become more familiar with SFR technology.

Identified charged hadron production in collisions at = 200 and 62.4 GeV

Adare, A.*; Afanasiev, S.*; Aidala, C.*; Ajitanand, N. N.*; Akiba, Yasuyuki*; Al-Bataineh, H.*; Alexander, J.*; Aoki, Kazuya*; Aphecetche, L.*; Armendariz, R.*; et al.

Physical Review C, 83(6), p.064903_1 - 064903_29, 2011/06

https://doi.org/10.1103/PhysRevC.83.064903

Transverse momentum distributions and yields for , and in collisions at = 200 and 62.4 GeV at midrapidity are measured by the PHENIX experiment at the RHIC. We present the inverse slope parameter, mean transverse momentum, and yield per unit rapidity at each energy, and compare them to other measurements at different collisions. We also present the scaling properties such as and scaling and discuss the mechanism of the particle production in collisions. The measured spectra are compared to next-to-leading order perturbative QCD calculations.

Positron annihilation lifetime measurements of vanadium alloy and F82H irradiated with fission and fusion neutrons

Sato, Koichi*; Inoue, Kazuya*; Yoshiie, Toshimasa*; Xu, Q.*; Wakai, Eiichi; Kutsukake, Chuzo; Ochiai, Kentaro

Journal of Nuclear Materials, 386-388, p.203 - 205, 2009/04

https://doi.org/10.1016/j.jnucmat.2008.12.089

V-4Cr-4Ti F82H, Ni and Cu were irradiated with fission and fusion neutrons at room temperature and 473 K. Defect structures were analyzed and compared using positron annihilation lifetime measurement, and microstructural evolution was discussed. The mean lifetime of positrons (the total amount of residual defects) increased with the irradiation dose. The effect of cascade impact was detected in Ni at room temperature. The size and the number of vacancy clusters were not affected by the displacement rate in the fission neutron irradiation at 473 K for the metals studied. The vacancy clusters were not formed in V Cr Ti irradiated at 473 K in the range of 10-10 dpa. In F82H irradiated at 473 K, the defect evolution was prevented by pre-existing defects. The mean lifetime of positrons in fission neutron irradiation was longer than that in fusion neutron irradiation in V Cr Ti at 473 K. It was interpreted that more closely situated subcascades were formed in the fusion neutron irradiation and subcascades interacted with each other, and consequently the vacancy clusters did not grow larger.

Application of radiological technology to medical device advancements in Japan

Yanagisawa, Kazuaki; Inoue, Tomio*; Hayakawa, Kazushige*; Shiotari, Harutaka*; Nakamura, Yoshihide*; Matsuyama, Kazuya*; Nagasawa, Kiyoshi*

no journal, , 

Our economic study performed in 1997 revealed that the use of radiological technology in medicine was tended to spread. A reimbursement of medicine was about 10 billion dollars corresponding to about 4% of the national health expenditures (240 billion dollars) or to an average expenditure of 1,900 dollars a year for the Japanese. In 2005 it was about 13 billion dollars. An increasing rate was 17%. One of main cause of this increase is a significant advancement of medical devices represented by digital-X ray, multi-slice CT, PET and PET-CT.

Application of radiation in medicine in Japan

Yanagisawa, Kazuaki; Inoue, Tomio*; Hayakawa, Kazushige*; Shiotari, Harutaka*; Nakamura, Yoshihide*; Matsuyama, Kazuya*; Nagasawa, Kiyoshi*

no journal, , 

For Japan, application of radiation in nuclear medicine is prominently used for the diagnosis, the radiotherapy and the examination by radioisotopes (RI). They addressed to FDG-PET, charged particle therapy and BNCT at the specified hospitals. Incomes are reimbursed by a national health insurance. In 2005, reimbursed incomes at those hospitals were studied as an economic scale as a commissioned work from the Cabinet Office, Government of Japan. Results were directly compared with those from previous work done in 1997. The economic scale of the application of radiation to all medical reimbursement in our country is 14 billion dollars, which is larger by a factor of 17% than that of 1997. The value corresponds to about 4.8% of the national health expenditure (301billion dollars), consisting of 4.4% for medicine and 0.4% for dentistry.

High stereographic resolution texture and residual stress evaluation using time-of-flight neutron diffraction

Xu, P. G.; Harjo, S.; Ojima, Mayumi*; Ito, Takayoshi*; Gong, W.*; Suzuki, Hiroshi; Akita, Koichi; Inoue, Junya*; Tomota, Yo*; Aizawa, Kazuya

no journal, ,