Characterization of radionuclides formed by high-energy neutron irradiation

Yokoyama, Sumi; Sato, Kaoru; Noguchi, Hiroshi; Tanaka, Susumu; Iida, Takao*; Furuichi, Shinya*; Kanda, Yukio*; Oki, Yuichi*; Kaneto, Taihei*

Radiation Protection Dosimetry, 116(1-4), p.401 - 405, 2005/12

https://doi.org/10.1093/rpd/nci020

The physicochemical property of radionuclides suspended in the air is an important parameter to evaluate internal doses due to the inhalation of the airborne radionuclides and to develop the air monitoring system in high-energy proton accelerator facilities. This study focuses on the property of radioactive airborne chlorine (Cl and Cl) and sulfur (S) formed from Ar gas by irradiation with high-energy neutrons. As a result of the irradiation to a mixture of Ar gas and dry air, Cl and Cl existed as non-acidic gas and S was present as acidic gas. Further, it was found that in the high-energy neutron irradiation to aerosol containing-Ar gas, the higher the amount of radioactive aerosols becomes, the lower that of radioactive acidic gas becomes.

A Development of a database system for the released radioactive gases and liquid from the nuclear facilities

Kikuchi, Masamitsu; Taki, Mitsumasa; Kume, Etsuo; Kobayashi, Hideo*; Yamada, Toshio*; Yamaguchi, Takenori

JAERI-Data/Code 2004-006, 146 Pages, 2004/03

JAERI-Data-Code-2004-006.pdf:6.87MB

The nuclear facilities, which are required to control the released radioactive gases and liquid, exist in Tokai research establishment as much as 40. These radioactive controls are carried out complying with the statutes in each facility. The released radioactivity data of each facility must be reported to MEXT and Ibaraki Prefecture from Tokai Research Establishment. This system is developed to make the database gathering the radioactivity data of each facilities for unitary control as Tokai Research Establishment and contribute to make the reports to MEXT and Ibaraki Prefecture.

Determination of detection efficiency curve for a gas monitor with a built-in germanium detector

Oishi, Tetsuya; Yoshida, Makoto; Saegusa, Jun; Honda, Tetsutaro*; Takahashi, Koji*; Kuwabara, H.*

Journal of Nuclear Science and Technology, 38(3), p.203 - 208, 2001/03

https://doi.org/10.3327/jnst.38.203

no abstracts in English

Analysis on evolving environments of engineered barriers of high-level radioactive waste repositories during the first 1,000 years

*; *; *; *; *; *; ; Nagasaki, Shinya*

Nihon Genshiryoku Gakkai-Shi, 35(5), p.420 - 437, 1993/05

https://doi.org/10.3327/jaesj.35.420

no abstracts in English

Radiation monitoring for induced radioactivities at JAERI-Linac

Kyoto Daigaku Genshiro Jikkenjo, Koenerugi Hoshasen No Hoken Butsuri (Koenerugi Hoshasenjo De Seisei Suru Yudo Hoshano Ni Tsuite) Kenkyukai Hokokusho, p.44 - 48, 1976/00

no abstracts in English