【摘要】 依据ＩＣＲＰ和ＩＣＲＵ最新推荐的外照射实用量的定义和概念，研究了用平行平板外推电离室测量定向吸收剂量率的理论和方法。实验测量和理论计算的接触天然铀块的Ｄ＇（ｄ，０）值与国外和国内著者的值进行了比较，符合得很好。更多还原

【Abstract】 The project has based the definition and conception on the new Recommendations of the ICRP and ICRU.The theory and method of -measuring the Directional Absord Dose by an extrapolation ionization chamber with parallel plane have been researched. The results experamentally measured and culculated theoretically of the directional absorbed dose D’(d,0) for a nature uranium slab have been compared with several authors.更多还原