title: Measurement system for alpha and beta emitters with continuous air sampling under different exposure situations.
abstract: In the present study, a continuous radioactive aerosol measurement system (CRAMS) was developed for measurements of radioactive plume (e.g.131I,134Cs and137Cs) under the emergency situation, and measurements of radon/thoron progeny under the existing situation. As a result, it is suggested that the CRAMS could follow the variation of radon concentration, and the detection limit of the CRAMS under ambient dose equivalent rate of 20µSvh-1, where the temporary evacuation is required within one week in the Japanese regulation, was evaluated to be 129Bqm-3in the manner of ISO11929.
authors.affiliation: Hirosaki University Graduate School of Health Sciences, 66-1 Honcho, Hirosaki, Aomori 036-8564, Japan.
authors.forename: Ryohei
authors.initials: R
authors.lastname: Yamada
authors.affiliation: School of Health Sciences, Hirosaki University, 66-1 Honcho, Hirosaki, Aomori 036-8564, Japan.
authors.forename: Yuki
authors.initials: Y
authors.lastname: Tamakuma
authors.affiliation: Institute of Radiation Emergency Medicine, Hirosaki University, 66-1 Honcho, Hirosaki, Aomori 036-8564, Japan.
authors.forename: Kazuki
authors.initials: K
authors.lastname: Iwaoka
authors.affiliation: Hirosaki University Graduate School of Health Sciences, 66-1 Honcho, Hirosaki, Aomori 036-8564, Japan.
authors.forename: Masahiro
authors.initials: M
authors.lastname: Hosoda
authors.affiliation: National Institute for Fusion Science, 322-6 Oroshicho, Toki, Gifu 509-5292, Japan.
authors.forename: Yoshitaka
authors.initials: Y
authors.lastname: Shiroma
authors.affiliation: National Institute for Fusion Science, 322-6 Oroshicho, Toki, Gifu 509-5292, Japan.
authors.forename: Naofumi
authors.initials: N
authors.lastname: Akata
authors.affiliation: Fuji Electric Co., Ltd., Gate City Ohsaki, East Tower 11-2, Osaki 1-chome, Shinagawa-ku, Tokyo 141-0032, Japan.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Mizuno
authors.affiliation: Fuji Electric Co., Ltd., Gate City Ohsaki, East Tower 11-2, Osaki 1-chome, Shinagawa-ku, Tokyo 141-0032, Japan.
authors.forename: Kouji
authors.initials: K
authors.lastname: Yamada
authors.affiliation: Fuji Electric Co., Ltd., Gate City Ohsaki, East Tower 11-2, Osaki 1-chome, Shinagawa-ku, Tokyo 141-0032, Japan.
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Kuroki
authors.affiliation: Hirosaki University Graduate School of Health Sciences, 66-1 Honcho, Hirosaki, Aomori 036-8564, Japan; Institute of Radiation Emergency Medicine, Hirosaki University, 66-1 Honcho, Hirosaki, Aomori 036-8564, Japan. Electronic address: tokonami@hirosaki-u.ac.jp.
authors.forename: Shinji
authors.initials: S
authors.lastname: Tokonami
keywords: Continuous air sampling; Detection limit; Emergency and existing situation; Radioactive plume