Gallium-effect in a lead-free solder for silver-sheathed superconducting tape

Shamoto, Shinichi; Lee, M. K.*; Fujimura, Yuki; Kondo, Keietsu; Ito, Takashi; Ikeuchi, Kazuhiko*; Yasuda, Satoshi; Chang, L.-J.*

Materials Research Express (Internet), 8(7), p.076303_1 - 076303_6, 2021/07

https://doi.org/10.1088/2053-1591/ac10d2

Pb, Ga, and Ga doped lead free Sn-Ag-Cu solders are used to study the gallium effect for the low joint resistivity with silver sheathed DI BISCCO type H tapes. The results are reported.

Evidence for a narrow = +1 Baryon resonance in photoproduction from the neutron

Nakano, Takashi*; Ahn, D. S.*; Ahn, J. K.*; Akimune, Hidetoshi*; Asano, Yoshihiro; Chang, W. C.*; Date, S.*; Ejiri, Hiroyasu*; Fujimura, Hisako*; Fujiwara, Mamoru; et al.

Physical Review Letters, 91(1), p.012002_1 - 012002_4, 2003/07

https://doi.org/10.1103/PhysRevLett.91.012002

no abstracts in English

Comparison between TRU burning reactors and commercial fast reactor

Fujimura, Koji*; Sanda, Toshio*; Ogawa, Takashi*

JNC TJ9400 2001-015, 85 Pages, 2001/03

JNC-TJ9400-2001-015.pdf:2.4MB

Research and development for stabilizing or shortening the radioactive wastes included in spent nuclear fuel are widely conducted in view point of reducing the environmental impact. Especially it is effective way to irradiate and transmute long-lived TRU by fast reactors. Two types of loading way were previously proposed. The former is loading relatively small amount of TRU in all commercial fast reactors and the latter is loading large amount of TRU in a few TRU burning reactors. This study has been intended to contribute to the feasibility studies on commercialized fast reactor cycle system. The transmutation and nuclear characteristics of TRU burning reactors were evaluated and compared with those of conventional transmutation system using commercial type fast reactor based upon the investigation of technical information about TRU burning reactors. Major results are summarized as follows. (1) Investigation of technical information about TRU burning reactors. Based on published reports and papers, technical information about TRU burning reactor concepts and transmutation system using conventional commercial type fast reactors were investigated. Transmutation and nuclear characteristics or R&D issue were investigated based on these results. (a) Homogeneously loading of about 5wt% MAs on core fuels in the conventional commercial type fast reactor may not cause significant impact on the nuclear core characteristics. Transmutation of MAs being produced in about five fast reactors generating the same output is feasible. (b) The helium cooled MA burning fast reactor core concept propose by JAERI attains criticality using particle type nitride fuels which contain more than 60 wt% MA. This reactor could transmute MAs being produced in more than ten 1000 MWe-LWRs. (c)Ultra-long life core concepts attaining more than 30 years operation without refueling by utilizing MA's nuclear characteristics as burnable absorber and fertile nuclides were proposed. (d)Those ...

Production of positron emitters and application of their labeled compounds to plant studies

Ishioka, Noriko; Matsuoka, Hiromitsu; Watanabe, Satoshi; Osa, Akihiko; Koizumi, Mitsuo; Matsuhashi, Shimpei; Kume, Tamikazu; Sekine, Toshiaki; Uchida, Hiroshi*; Tsuji, Atsunori*; et al.

Journal of Radioanalytical and Nuclear Chemistry, 239(2), p.417 - 421, 1999/00

https://doi.org/10.1007/BF02349523

no abstracts in English

Positron emitting tracer in plants

Kume, Tamikazu; Fujimura, Takashi; Ishioka, Noriko; Uchida, Hiroshi*; Tsuji, Atsunori*

Nature, 389(6649), 1 Pages, 1997/09

no abstracts in English

A Study of ethanol production of yeast cells immobolized with polymer carrier produced by radiation polymerization

Zhaoxin, L.*; Fujimura, Takashi

Radiation Physics and Chemistry, 42(4-6), p.923 - 926, 1993/10

https://doi.org/10.1016/0969-806X(93)90403-H

no abstracts in English

4. Applications in extreme environments

Egusa, Shigenori; Fujimura, Takashi

Interijento Materiaru, p.195 - 206, 1991/00

no abstracts in English

Activity dependence of immobilized yeast cells on the various natures of polymer carriers for immobilization produced with radiation polymerization at low temperature

Fujimura, Takashi; M.Carenza*; Kaetsu, Isao

Radiation Physics and Chemistry, 31(4-6), p.653 - 655, 1988/00

https://doi.org/10.1016/1359-0197(88)90240-8

no abstracts in English

Nature of yeast cells immobilized by radiation polymerization activity dependence on the molecular motion of polymer carriers

Fujimura, Takashi; Kaetsu, Isao

Zeitschrift fr Naturforschung, C, 40, p.576 - 579, 1985/00

no abstracts in English

Initial stage in radiation polymerization of hydroxyethyl methacrylate-water system at low temperatures

; Fujimura, Takashi; Kaetsu, Isao

Eur.Polym.J., 19(7), p.621 - 626, 1983/00

https://doi.org/10.1016/0014-3057(83)90189-1

no abstracts in English