title: Development of new analytical method based on beta-alpha coincidence method for selective measurement of 214Bi-214Po-application to dust filter used in radiation management.
abstract: The radionuclide pair (214)Bi and (214)Po which belongs to the uranium series interferes with airborne radionuclide measurement needed for the radiation management of a nuclear facility. Time intervals between (214)Bi (β) and (214)Po (α) are much shorter than artificial radionuclides due to the short half-life of (214)Po (164 μs). The purpose of this study is to develop of a new analytical method (time interval analysis: TIA) based on the beta-alpha coincidence method for selective measurement of (214)Bi-(214)Po. The developed method was applied to an actual dust-filter measurement. The TIA system was highly effective in measuring of the filter with background subtraction.
authors.affiliation: Nuclear Fuel Cycle Engineering Laboratories, Tokai Research and Development Center, Japan Atomic Energy Agency, 4-33 Muramatsu, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan. sanada.yukihisa@jaea.go.jp
authors.forename: Yukihisa
authors.initials: Y
authors.lastname: Sanada
authors.forename: Yoichiro
authors.initials: Y
authors.lastname: Tanabe
authors.forename: Nobuo
authors.initials: N
authors.lastname: Iijima
authors.forename: Takumaro
authors.initials: T
authors.lastname: Momose
mesh_terms: D000512:Alpha Particles; D001610:Beta Particles; D001729:Bismuth / Q000032:analysis*; D004391:Dust; D005374:Filtration; D011059:Polonium / Q000032:analysis*; D011834:Radiation Monitoring / Q000295:instrumentation* / Q000379:methods*; D014501:Uranium
chemical_list: D004391:Dust; D014501:Uranium; D011059:Polonium; D001729:Bismuth