论文部分内容阅读
提出了一个只用一个采样头的便携式支气管剂量计。采样头分别由一层400目金属筛网和滤膜组成。采样气流面速为12cm／s，采样后分别对筛网和滤膜同时测量其总α计数，可得氡子体照射气管支气管（T-B区）的年有效剂量（mSv／a）。如将采样头与主动式活性炭盒串接采样测定氧气浓度，则还可以计算出以μSv／（aBqm-3）为单位的剂量转换因子。给出了这种支气管剂量计的设计思想和试验性测量结果。
A portable bronchial dosimeter with only one sampling head is proposed. The sampling head consists of a layer of 400 mesh metal mesh and filter. Sampling air flow surface velocity of 12cm / s, respectively, after sampling the sieve and filter simultaneously measuring the total α count can be radon child body irradiation bronchial tube (T-B area) of the annual effective dose (mSv / a). If the sampling head is connected in series with the active carbon cartridge to determine the oxygen concentration, the dose conversion factor in μSv / (aBqm-3) can also be calculated. The design idea and experimental measurement results of this bronchial dosimeter are given.