title: High sensitive airborne radioiodine monitor.
abstract: Airborne radioiodine monitoring includes a problem in that commercial radioactive gas monitors have inadequate sensitivity. To solve this problem, we designed a highly sensitive monitoring system. The higher counting efficiency and lower background made it possible to perform the low-level monitoring. The characteristics of the system were investigated using gaseous (125)I. The minimum detectable activity concentration was 1 × 10(-4)Bq cm(-3) for 1 min counting, which is one tenth of the legal limit for the radiation controlled areas in Japan.
authors.affiliation: Graduate School of Nagoya University, Daiko-minami, Higashi-ku, 461-8673 Nagoya, Japan. ogata@met.nagoya-u.ac.jp
authors.forename: Yoshimune
authors.initials: Y
authors.lastname: Ogata
authors.forename: Tadashi
authors.initials: T
authors.lastname: Yamasaki
authors.forename: Ryuji
authors.initials: R
authors.lastname: Hanafusa
mesh_terms: D000396:Air Pollutants, Radioactive / Q000032:analysis*; D000401:Aircraft / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005740:Gases / Q000032:analysis*; D007457:Iodine Radioisotopes / Q000032:analysis*; D007564:Japan; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000295:instrumentation*; D011847:Radioactive Fallout / Q000032:analysis*; D012680:Sensitivity and Specificity
chemical_list: D000396:Air Pollutants, Radioactive; D005740:Gases; D007457:Iodine Radioisotopes; D011847:Radioactive Fallout
keywords: Airborne radioiodine; High sensitivity; Radioiodine gas monitor