β测量新材料密度中标准材料的选择

Choose of standard materials in The method of beta testing new materials' mass thickness

为了解决β测量新材料密度中的定标问题,采用M.C.方法进行了模拟计算,得到了不同能量的β射线的透射率在不同材料中与质量厚度的变化关系,证明了β测厚中选择元素相近材料作标准材料的可行性。

To make sure of the standard mass thickness in beta radials testing mass thickness, this paper calculate using M. C. method and get the result of the relations between the beta radials＇transmission rate of different energies and mass thickness in different materials. This result prove that in method of beta test mass thickness choosing materials whose elements are close as standard materials are viable.