A General Purpose Direct Current Ionization Chamber

摘要: A large re-entrant ionization chamber which can take sources up to 15 in. (380 mm) long and 7 (178 in diameter is described. It has been use for several years an account of its clinical research applications given. The input components are 108 Ω, 1010 Ω 100 μμF, γ-emitting from a microcurie curie be measured better than 1%. detector vibrating reed electrometer used as null indicator conjunction with voltage dividing box all measurements made by comparing the unknown source three radium sources, one each range. performance regard accuracy term stability described detail paper includes some values half-lives 131I, 132I, 60Co, 59Fe, 182Ta 198Au.