个人剂量计刻度方法研究

APPROACH FOR THE CALIBRATION OF PERSONNAL DOSEMETER

回顾了国际辐射单位与测量委员会提出的外照射监测实用辐射量的进展，着重阐述了实用量的特征和不同的个人剂量计刻度方法。在￣（１３７）Ｃｓ、￣（６０）Ｃｏ和ＩＳＯ－４０３７规定的６个宽谱辐射场（４５，７９，１０４，１３４，１６９，２０４ｋｅＶ）中将ＩＲＭＢ热释光个人剂量计置于３０ｃｍ×３０ｃｍ×３０ｃｍ的方形水模体上，应用照射量与实用量转换系数，研究了其相对于新实用量的能量响应特性。对实用量在应用中的一些问题作了进一步讨论。

Brief reviews on evolution of operational quantities used in radiation protection for external irradiation are made,and special at tention is paid to characteristics of these quantities and diffe- rent approches for the calibration of personal dosementer. Measurements are made of energy re- sponse of IRMB thermoluminescence dosemeter mounted on a water cuboid phantom 30 cm × 30 cm × 3 0 cm. Values of exposures at the position of dosemeter in the absence of dosemeter and phantom are converted to ICRU operational quantities using published conversion coefficients. Measurements are performed for￣(137)Cs and￣(60)Co gamma radiation,the ISO wide series of filter X radiation(6 quanlities 45,79,104,134,169 and 204 keV).The further discussion on some ques- tions related to the implementation of new quantities are also made.