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JAEA Reports

Study for reducing radioactive solid waste at ITER decommissioning period

Sato, Shinichi*; Araki, Masanori; Omori, Junji*; Oono, Isamu*; Sato, Satoshi; Yamauchi, Michinori*; Nishitani, Takeo

JAERI-Tech 2002-083, 126 Pages, 2002/10

JAERI-Tech-2002-083.pdf:4.07MB

It is one of the foremost goals for ITER to demonstrate the attractiveness with regard to safety and environmental potential. This implies that the radioactive materials and waste at decommissioning phase should carefully be treated with prescribed regulations. As possible activities during the Coordinated Technical Activity (CTA), Japanese Participant Team (JA-PT) has proposed a study for searching the possibility of more reduction in the activated level by taking account of minimum material changes while keeping original design concept and structure. Based on it, reassessment of the activation level and the amount of activation volumes will give us positive aspects for public acceptance.

JAEA Reports

Improvement and mock-up test of vinyl bag for critical experiment fueled with plutonium at STACY (Contract research)

Onodera, Seiji; Sugawara, Susumu; Kobayashi, Heigo; Haga, Koichi; Fukushima, Susumu*; Shichiji,Isamu*; Ono, Akio

JAERI-Tech 2002-070, 77 Pages, 2002/09

JAERI-Tech-2002-070.pdf:8.74MB

no abstracts in English

JAEA Reports

Alternatives of ITER vacuum vessel support system

Omori, Junji*; Kitamura, Kazunori*; Araki, Masanori; Oono, Isamu*; Shoji, Teruaki

JAERI-Tech 2002-053, 86 Pages, 2002/07

JAERI-Tech-2002-053.pdf:3.81MB

no abstracts in English

Journal Articles

The Summary report on engineering design activities in the International Thermonuclear Experimental Reactor (ITER) project

Mori, Masahiro; Shoji, Teruaki; Araki, Masanori; Saito, Keiji*; Senda, Ikuo; Omori, Junji*; Sato, Shinichi*; Inoue, Takashi; Ono, Isamu*; Kataoka, Takahiro*; et al.

Nihon Genshiryoku Gakkai-Shi, 44(1), p.16 - 89, 2002/01

no abstracts in English

Journal Articles

Crystallization of an amorphous layer in P$$^{+}$$-implanted 6H-SiC studied by monoenergetic positron beams

Uedono, Akira*; Tanigawa, Shoichiro*; Oshima, Takeshi; Ito, Hisayoshi; Yoshikawa, Masahito; Nashiyama, Isamu; Frank, T.*; Pensl, G.*; Suzuki, Ryoichi*; Odaira, Toshiyuki*; et al.

Journal of Applied Physics, 87(9), p.4119 - 4125, 2000/05

 Times Cited Count:12 Percentile:50.33(Physics, Applied)

no abstracts in English

Journal Articles

Relationship between donor activation and defect annealing in 6H-SiC hot-implanted with phosphrous ions

Oshima, Takeshi; Uedono, Akira*; Ito, Hisayoshi; Yoshikawa, Masahito; Kojima, Kazutoshi; Okada, Sohei; Nashiyama, Isamu; Abe, Koji*; Tanigawa, Shoichiro*; Frank, T.*; et al.

Materials Science Forum, 338-342, p.857 - 860, 2000/00

no abstracts in English

Journal Articles

Study of residual defects in ion-implanted and subsequently annealed 3C-SiC

Oshima, Takeshi; Ito, Hisayoshi; Uedono, Akira*; Suzuki, Ryoichi*; Ishida, Yuki*; Takahashi, Tetsuo*; Yoshikawa, Masahito; Kojima, Kazutoshi; Odaira, Toshiyuki*; Nashiyama, Isamu; et al.

Denshi Gijutsu Sogo Kenkyujo Iho, 62(10-11), p.469 - 476, 1999/00

no abstracts in English

Journal Articles

Oxygen-related defects in O$$^{+}$$-implanted 6H-SiC studied by monoenergetic positron beams

Uedono, Akira*; Tanigawa, Shoichiro*; Oshima, Takeshi; Ito, Hisayoshi; Aoki, Yasushi; Yoshikawa, Masahito; Nashiyama, Isamu

Journal of Applied Physics, 86(10), p.5392 - 5398, 1999/00

 Times Cited Count:10 Percentile:46.85(Physics, Applied)

no abstracts in English

Journal Articles

Investigation of vacancy-type defects in P$$^{+}$$-implanted 6H-SiC using monoenergetic positron beams

Uedono, Akira*; Oshima, Takeshi; Ito, Hisayoshi; Suzuki, Ryoichi*; *; Tanigawa, Shoichiro*; Aoki, Yasushi; Yoshikawa, Masahito; Nashiyama, Isamu; Mikado, Tomohisa*

Japanese Journal of Applied Physics, Part 1, 37(5A), p.2422 - 2429, 1998/05

 Times Cited Count:13 Percentile:54.49(Physics, Applied)

no abstracts in English

Journal Articles

Characterization of vacancy-type defects and phosphorus donors introduced in 6H-SiC by ion implantation

Oshima, Takeshi; Uedono, Akira*; Abe, Koji*; Ito, Hisayoshi; Aoki, Yasushi; Yoshikawa, Masahito; Tanigawa, Shoichiro*; Nashiyama, Isamu

Applied Physics A, 67(4), p.407 - 412, 1998/00

 Times Cited Count:26 Percentile:73.42(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Study of thermal annealing of vacancies in ion implanted 3C-SiC by positron annihilation

Oshima, Takeshi; Uedono, Akira*; Ito, Hisayoshi; Abe, Koji*; Suzuki, Ryoichi*; *; Aoki, Yasushi; Tanigawa, Shoichiro*; Yoshikawa, Masahito; Mikado, Tomohisa*; et al.

Mater. Sci. Forum, 264-268, p.745 - 748, 1998/00

no abstracts in English

Journal Articles

Characterization of residual defects in cubic silicon carbide subjected to hot-implantation and subsequent annealing

Ito, Hisayoshi; Oshima, Takeshi; Aoki, Yasushi; Abe, Koji*; Yoshikawa, Masahito; Nashiyama, Isamu; Okumura, Hajime*; Yoshida, Sadafumi*; Uedono, Akira*; Tanigawa, Shoichiro*

Journal of Applied Physics, 82(11), p.5339 - 5347, 1997/12

 Times Cited Count:13 Percentile:58.41(Physics, Applied)

no abstracts in English

Journal Articles

Annealing properties of defects in ion-implanted 3C-SiC studied using monoenergetic positron beams

Uedono, Akira*; Ito, Hisayoshi; Oshima, Takeshi; Suzuki, Ryoichi*; *; Tanigawa, Shoichiro*; Aoki, Yasushi; Yoshikawa, Masahito; Nashiyama, Isamu; Mikado, Tomohisa*; et al.

Japanese Journal of Applied Physics, Part 1, 36(11), p.6650 - 6660, 1997/11

 Times Cited Count:16 Percentile:64.19(Physics, Applied)

no abstracts in English

Journal Articles

Positron annihilation studies of defects in 3C-SiC hot-implanted with nitrogen and aluminum ions

Ito, Hisayoshi; Uedono, Akira*; Oshima, Takeshi; Aoki, Yasushi; Yoshikawa, Masahito; Nashiyama, Isamu; Tanigawa, Shoichiro*; Okumura, Hajime*; Yoshida, Sadafumi*

Applied Physics A, 65(3), p.315 - 323, 1997/00

 Times Cited Count:16 Percentile:64.19(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Defects in ion-implanted 3C-SiC probed by a monoenergetic positron beam

Uedono, Akira*; Ito, Hisayoshi; Oshima, Takeshi; Aoki, Yasushi; Yoshikawa, Masahito; Nashiyama, Isamu; Okumura, Hajime*; Yoshida, Sadafumi*; *; *; et al.

Japanese Journal of Applied Physics, Part 1, 35(12A), p.5986 - 5990, 1996/12

no abstracts in English

Journal Articles

Design of thermal shield for the ITER cryostat

; Kato, Takashi; Tsuji, Hiroshi; *; *; Nakahira, Masataka; *; Oono, Isamu*; *; R.Bourque*; et al.

Proc. of 16th Int. Cryogenic Engineering Conf. /Int. Cryogenic Materials Conf., 0, p.427 - 430, 1996/00

no abstracts in English

Journal Articles

Proton irradiation effects on organic polymers

Seguchi, Tadao; Sasuga, Tsuneo; Kawakami, Waichiro; Hagiwara, Miyuki; Kono, Isamu*; Kamitsubo, Hromichi*

Proceedings of 11th International Conference on Cyclotrons and Their Applications, p.669 - 672, 1987/00

Organic polymer films(100 m thickness) of polyethylene, polypropylene, polyethyleneterephtalate, and polyethersulfone were irradiated by protons of 8MeV using a cyclotorn, and their radiation effects were investigated by the changes of mechanical properties.

Journal Articles

Radiation effects of proton beam on polymer films

Kawanishi, Shuichi; Sasuga, Tsuneo; ; ; Seguchi, Tadao; Kono, Isamu*

EIM-86-125, p.49 - 54, 1986/00

no abstracts in English

JAEA Reports

Report of JAERI-PIKAGAKU KENKYUSHO Co-organized Meeting on HEAVY-ION SCIENCE

; ; ; *; Kono, Isamu*; Kamitsubo, Hromichi*

JAERI 1221, 156 Pages, 1972/05

JAERI-1221.pdf:8.67MB

no abstracts in English

Oral presentation

Feasibility study on a long-life vitrification melter

Yamashita, Teruo; Miura, Akihiko; Kato, Junya; Shiotsuki, Masao; Ono, Isamu*; Fukui, Toshiki*; Yamasaki, Akito*; Matsumoto, Shiro*

no journal, , 

The objective of this development is to extend vitrification melter life-time to reduce burden of the high level radioactive waste management by applying advanced technologies. The candidate concepts of the long-life melter were studied with evaluation of adopted important advanced technologies such as skull layer conditions and the commutative electrode structure. It was concluded that such technology has a potential to extend melter life as 20 years even in the preliminary studies. Based on the obtained results, after the following fiscal year, evaluation of each component, small scale melter examination, and development and evaluation of simulation tool are carried out.

24 (Records 1-20 displayed on this page)