标准摘要
[中文适用范围]: 本技术规范适用于所有类型的计数剂量计,无论其测量的量及拟测量的辐射类型如何。它确保即使剂量计处于用于测量背景辐射或环境辐射的内部状态,也能正确测量单个辐射脉冲。对于重复脉冲,剂量计的特性预计优于具有相同参数的单个辐射脉冲,但劣于连续辐射,即介于这两个极端条件之间。本技术规范未规定重复脉冲的特性。本技术规范不适用于以下类型的计数剂量计:没有剂量率和脉冲计数的指示或软件读出;将通过转换器将非脉冲探测器信号转换为计数;或利用核反应产生长且近乎连续的次级辐射场,随后使用计数技术测量该场而非直接测量辐射脉冲。脉冲辐射源由以下参数表征:辐射脉冲持续时间(t_pulse)、脉冲峰值剂量率(H_pulse, peak)和每脉冲剂量(H_pulse)。本技术规范将辐射场的脉冲化视为粒子能量和入射方向等附加影响因素。因此,所描述的测试是各自标准中所有测试的补充。本技术规范描述了确定计数剂量计特征参数的方法。该方法的先决条件是剂量计的模型函数足以近似为 G_dose = G_count × n_count × k_dead,其中 G_dose 是剂量计的剂量指示值,G_count 是每个计数事件的剂量指示值,n_count 是剂量计计数的计数事件数量,k_dead 是死时间损失的修正。该简化模型函数不应完全描述剂量计,但应在剂量计处于用于测量背景或环境辐射的内部状态且发生单个辐射脉冲时有效(即剂量计未针对高剂量率进行任何特定的参数调整)。在此意义上,该简化模型函数使用特定于脉冲辐射的有效参数。本技术规范适用于所有有合适脉冲参考场且满足其他要求的所有类型辐射。 [外文原描述]: IEC/TS 62743:2012(E) applies to all types of counting dosemeters, irrespective of the measuring quantity and the type of radiation intended to be measured. It ensures that a single radiation pulse can be correctly measured even if the dosemeter is in the internal state relevant for measuring background or environmental radiation. The characteristics of the dosemeter for repeated pulses is expected to be better than for one single radiation pulse with the same parameters but worse than for continuous radiation, i.e., in between of the characteristics for these two extreme conditions. Considers the pulsation of the radiation field as an additional influence quantity like particle energy and direction of radiation incidence. Therefore, the tests described are additional to all the tests in the respective standards.
英文名称Radiation protection instrumentation - Electronic counting dosemeters for pulsed fields of ionizing radiation