THE EFFECT OF DIFFUSENESS PARAMETER ON THE QUASI-ELASTIC SCATTERING OF THE 25Mg

In this research, the effect of changing the values of the diffusion parameter on the semi-elastic scattering (????? ??? ) and distribution (D) calculations for single channel (SC) and coupled channel (CC) have been studied. Three values were taken from the diffusion for each system parameter. It is assumed that the nuclear potential has a Woods-Saxon form, which is indicated by the surface diffuseness, potential depth, and radius parameters for (25Mg + 90Zr), (28Si + (120Sn, 150Nd) Systems. The chi square (& chi;2) is applied to compare the best fitted value of the diffuseness parameter between the theoretical calculations and the experimental data. According to the results of (& chi;2), we noticed that some systems achieved a good match between the theoretical calculations and experimental data of semi-elastic scattering (????? ??? ) and the distribution calculations at the standard value of the diffusion parameter (a0=0.63) or at a value higher and lower than the standard value .In the case of channel is single SC the best fit was at a value less than the standard value of the diffusivity parameter, but in the case of CC the fit was better at a value higher than the standard value of the surface diffuseness parameter because the potential barrier in the single SC, while in CC calculations it is multiple.