In recent years

the measurement of fluorescence lifetime

decay function and time resolved spectra have made an increasing contribution to the understanding of rapid processes in physical

Chemical and biological sciences. These measurements carried out on microsecond to picosecond time scale

it requires using the single photon counting technique. The decay functions are analysed using numerical convolution and devolution. The experimental data are fitted to preselected kinetic models using rigorous statistical methods. Based on the model SP-70 nanosecond fluorescence spectrometer

this paper disscusses data analysis of fluorescence lifetime

convolution mathematical expression

statistical tests to judge the quality of the results and deconvoluti-on treatment of nanosecond fluorescence lifetime.