1985年,国际辐射单位与测量委员会(ICRU)发表了第39号报告,提出了四个可以测量的新辐射防护量:即用于环境(包括场所)监测的周围剂量当量 H~*(10)和定向剂量当量 H′(0.07);用于个人监测的深部个人剂量当量 H_p(10)和浅表个人剂量当量 H_s(0.07)。这些量对外照射剂量监测具有重要意义,但要将这些定义及其概念付诸实践,尚有许多工作要做。为此,国内外有关组织已做了 In 1985, the International Commission on Radiological Units and Measurements (ICRU) published Report No. 39, proposing four new measurable doses of radiation protection: the ambient dose equivalent H ~ * (10) for environmental (including site) monitoring, And directional dose equivalent H ’(0.07); the deep individual dose equivalent H_p (10) for personal monitoring and the superficial individual dose equivalent H_s (0.07). These quantities are important for monitoring external dose exposure, but much remains to be done to put these definitions and concepts into practice. To this end, relevant organizations at home and abroad have already done so