Experimental study of multi-photon contamination on the measurement of fluorescent decay time  

作　　者：祝文涵 赵艳娥 张云龙 许咨宗 汪晓莲 

机构地区：[1]Department of Modern Physics, University of Science and Technology of China

出　　处：《Chinese Physics C》2008年第11期912-915,共4页中国物理C（英文版）

基　　金：Supported by NSFC (10475074)

摘　　要：In the measurement of fluorescent lifetime based on time correlation-single photon counting technique by means of TAC, due to the contamination of multi-photons a deviation of fluorescent lifetime measured from the expected value is experimentally studied. A correction function instead of a simple exponential function is used to fit the experiment data. The validation of the correction function is checked using the experimental data of several test samples： YAP, NaI（T1） and LSO. The results show that the correction function well fits the data and the reasonable fluorescent lifetimes are obtained.In the measurement of fluorescent lifetime based on time correlation-single photon counting technique by means of TAC, due to the contamination of multi-photons a deviation of fluorescent lifetime measured from the expected value is experimentally studied. A correction function instead of a simple exponential function is used to fit the experiment data. The validation of the correction function is checked using the experimental data of several test samples： YAP, NaI（T1） and LSO. The results show that the correction function well fits the data and the reasonable fluorescent lifetimes are obtained.

关 键 词：time correlation-single photon counting fluorescent lifetime multi-photon contamination 

分 类 号：O572.21[理学—粒子物理与原子核物理]