组织等效正比计数器(TEPC)被广泛用于混合辐射场的辐射防护监测。TEPC通过测量微剂量谱(亦称线能谱)得到剂量当量值,因测量时间可适度控制,计数引入的统计不确定度项可忽略,其测量不确定度以B类方法进行评估。TEPC测量剂量当量过程中不确定度来源项主要包括探测器灵敏体积、组织等效气体组分、增益漂移、刻度等,其中探测器灵敏体积(4%)、组织等效气体组分(1%)、增益漂移(2%)等对剂量当量值引入的不确定度项,依据外文文献中的值确定。采用中子源刻度(即反冲质子方法)时的主要影响因素是不同粒子的电离功W、“质子边”位置 TESCs are widely used for radiation protection monitoring of mixed radiation fields. TEPC dose-spectrum by measuring the micro-spectroscopy (also known as line energy spectrum) to obtain the dose equivalent, due to the measurement time can be moderately controlled, counting the introduction of statistical uncertainty is negligible, the measurement uncertainty in the B-class method of assessment. TEPC sources of uncertainty in the measurement of dose equivalent include the sensitive volume of the detector, the equivalent gas composition of the tissue, the gain drift, the scale, etc. The detector sensitive volume (4%), the tissue equivalent gas component (1% ), Gain drift (2%), etc. The uncertainty of the introduction of dose equivalent is determined by the value in the foreign literature. The main influencing factors when using the neutron source scale (ie, the recoil proton method) are the ionization energies of different particles W, “proton edge” position