The experiment results from the light particle correlation measurement
obtained in C-12(46.7 MeV/u) + Ni-58 reaction by using a 9-element Cs
I(Tl) hodoscope are reported. The definition of the correlation functi
on and its extraction method from the experimental data are discussed
in detail. In this paper, the decay of the unstable particles is studi
ed. The correlation functions of various particle combination on Ni-58
target are given.