关于CTLD-J4000型个人剂量计用于能量鉴别的研究

目的 通过对分散性为±1%探测器计量检定结果的分析,验证CTLD-J 4000型胸章式个人剂量计能否适用于不同能量的放射诊疗场所。方法 根据《个人与环境监测用X、γ辐射热释光剂量测量(装置)系统》(JJG 593-2006)的要求,将准备的剂量计送至国防科技工业电离辐射一级计量站进行检定,分析结果。结果 热释光剂量监测系统的线性、能量响应符合检定规程要求;通过确定剂量计不同槽内探测器计数比值,能够区分不同能量的光子,从而科学选择刻度因子,计算人员有效剂量。结论 CTLD-J4000型胸章式个人剂量计能够鉴别能量,适用于在不同能量放射诊疗场所的个人剂量监测工作。

The Research on Whether Thermoluminescent Personal Dosimeter Called CTLD-J4000 Can be Used for Energy Discrimination

Objective According to analysis metrological verification results of detectors which dispersity are ±1% to verify whether thermoluminescent personal dosimeter called CTLD-J 4000 can be suitable for the place of radiolo-gical diagnosis and radiotherapy of different energy. Methods Under the "Thermoluminescence Dosimetry Syste-ms Used in Personal and Environmental Monitoring for X and Gamma Radiation JJG593 -2006", the preparing thermoluminescent personal dosimeter was taken to The first class metering station of ionizing radiation of Science and Technology Industry of National Defense for the verification, and the results were analyzed. Results The linearity and the en-ergy response of thermoluminescence dosimetry system meet the demand of test specification. Specific val-ue of detetors determined which in the different groove of personal dosimeter can differentiate photon of different energy, and only if choosing calibration factors scientifically, can the effective dose be calculated. Conclusion Thermo-luminescent personal dosimeter called CTLD-J4000 can be suitable for identifying energy, and can be used to monitor personal dose in the the place of radiolo-gical diagnosis and radiotherapy of different energy.