摘要
对在α源标定中发现的两个主要问题作了叙述：（1）α剂量在直径为10mm的面积上是一个非常不均匀的场，这个不均匀性由244Cm源质量差而造成的；（2）辐照仪的计时外剂量不能忽略。测定了两类β辐照仪的计时外剂量，并得到了辐照剂量的计算公式。
Some problems were found in the alpha source calibration. Two of such problems are discussed in this paper: 1) distribution of the alpha radiation dose on an area of lonun diameter was seriously non-uniform, the non-uniformity was due to poor quality of the 244Cm source used; 2) the offset dose could not be ignored for some irradiators. The offset doses for twokinds of beta irradiators have been determined,and the calculation equation for the dose was derived.
出处
《核技术》
CAS
CSCD
北大核心
1999年第10期629-632,共4页
Nuclear Techniques
关键词
α源标定
非均匀场
计时外剂量
热释光
测年
TL dating, Alpha source calibration, Non-uniform field, Offset dose
