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《Chinese Journal of Luminescence》 2002-01
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A Method for Multi-exponential Fitting to the Fluorescence Decay

LIN Jiu-ling 1,2, DONG Zhi-shan 3, ZHANG Xiu-feng 2, LUO Yong-shi 2, WANG Zun-li 2, SUN Tie-zheng 2, LIN Hai 2, LIU Xing-ren 1,2 (1. Laboratory of Excited State Processes, Chinese Academy of Sciences; 2. Changchun Institute of Optics, Fin  
Among the established techniques for measuring fluorescence decay rate, time-correlated single-photon counting (TCSPC) provides unusually high sensitivity, and is, widely used. Sample's decay curves measured by the TCSPC system contain the system's respond function. In order to get the real decay curve of the sample, we have to do the deconvolution. For that, we need a method to do the nonlinear fitting. By now those established nonlinear fitting method have the problem that resolution is sense to the given initial value, and need too much time to do the calculation. To overcome those disadvantages, we build up a new method to do the fitting. The method is based on the practical pace-accelerated means. It has nice precision and good repetition. For a common value, it can easily work out a fairly good resolution. Using this program, we analyzed some sample's decay curve. The result shows that the new method is useful for the fitting to the fluorescence decay curves.
【Fund】: 国家自然科学基金资助项目 ( 6 982 70 0 2 )
【CateGory Index】: O482.31
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1 Wu Chao, Chen Wen~*, Zhou Jing, Tian Gao, Zhao Chunxia (Institute of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China);Preparation and Characterization of Eu/MCM-41 Mesoporous Composite Material[J];Journal of The Chinese Rare Earth Society;2005-02
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