THE AFFECTION OF SIZE CHANGE OF α PARTICLE ON THE α-α SCATTERING

Abstract：

This article gives an approach to the calculation of the scattering phase shift tak-mg into account the effect of the size change of scattering nuclei. As an example,we have calculated the phase shift of a-a scattering. Firstly, we calculate the sizechange of the a particle with the generator coordinate (the mean distance betweenthe two particles by the variations method based on the microscopic many body the-ory of the double well centre shell model, and secondly, calculate the phase shift byKohn variational method choosing such trial wave function so that we can use therelation of the GCM and the RGM. The results shows that there are considerable af-fection of the size change of the a particle on the phase shift and some improvementsfor the theoretical values of the phase shift has been obtained.