本世纪初,自由基的发现开创了化学发展的新纪元,并促进了其他学科的发展。众所周知,有机固体的辐射效应是产生相对稳定的自由基,所以自由基的定量分析为剂量测量提供了基础。另一方面,迅速发展的微波波谱法又为自由基测定提供了良好的技术手段。于是,自由基剂量测量(FRD)就应运而生了。目前,FRD可分为二类,一类以电子自旋共振(ESR)分析为基础,另一类以晶溶 At the beginning of this century, the discovery of free radicals created a new era of chemical development and promoted the development of other disciplines. As we all know, the radiation effect of organic solid is to produce relatively stable free radicals, so the quantitative analysis of free radicals provides the basis for dose measurement. On the other hand, the rapid development of microwave spectroscopy and free radical determination provides a good technical means. As a result, free radical dose measurement (FRD) came into being. At present, FRD can be divided into two categories, one based on electron spin resonance (ESR) analysis,