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用高时间分辨ESR波谱仪测量了光解苯半醌和2－羟基－2－丙基自由基的CIDEP谱，苯半醌自由基的CIDEP属TM机理．实验研究了微波功率、溶液浓度对苯半醌自由基的CIDEP谱时间演化的影响．2－羟基－2－丙基自由基的CIDEP属RPM机理，实验研究了自旋极化的生成环境．
The CIDEP spectra of photolysized phenylquinone and 2-hydroxy-2-propyl free radicals were measured by high resolution time-resolved ESR spectroscopy. CIDEP belongs to the TM mechanism of the benzophenone free radicals. The influence of microwave power and solution concentration on the time evolution of CIDEP spectra of phenylquinone free radicals was studied experimentally. The CIDEP of 2-hydroxy-2-propyl free radical belongs to the RPM mechanism and the formation environment of spin polarization is experimentally studied.