The Study Of α-²⁰Ne And ¹⁶O-²⁰Ne Heavy-ions Scattering In The α+¹⁶O Model Of ²⁰Ne

Based on theα+¹⁶O model of ²⁰Ne nucleus and the 4αmodel of ¹⁶O nucleus, the folding potential for theα- ²⁰Ne and ¹⁶O - ²⁰Ne elastic scattering were derived by using theα-αandα- ¹⁶O interactions with theα(or ¹⁶O ) density in the ²⁰Ne nucleus and theαdensity in the ¹⁶O nucleus. The imaginary part of the optical potential of the conventional phenomenological potential (Woods-Saxon shape) and the Woods-Saxon potential (volume potential) plus the derivative Woods-Saxon potential (surface potential) have been used in the present calculations. The elastic scattering ofα- ²⁰Ne at incident energies of 12.7,16.8,25.8,27.0,31.1,54.1,104.1 MeV, and ¹⁶O - ²⁰Ne at the energies of center of mass 24.5,27.9,28.2,29.1,31.7,32.1,33.0,35.5 MeV were analyzed using the obtained folding potential. The calculated results of theα- ²⁰Ne and ¹⁶O - ²⁰Ne elastic scattering angular distributions are in good agreement with the experimental data. With the imaginary potential of the Woods-Saxon potential (volume potential) plus the derivative Woods-Saxon potential (surface potential), the better fits to the experimental data were obtained. The renormalization factors between 1.0-1.2 were needed to get better fits to the data, which have the volume integrates for the real potential a little larger than that obtained by other studies. The values of volume integrate for the imaginary potential are similar and consistent with those obtained by other studies. For the ¹⁶O - ²⁰ Ne scattering, when using the imaginary potential with the surface term, the calculated angular distribution can very well describe the data, and the reasonable values of renormalization factor between 0.8-0.9, and volume integrates of the real potential between 339-368 MeVï¹’fm3 were obtained. A parity-dependent imaginary potential has been used to describe the ¹⁶O - ²⁰ Ne elastic scattering, and a successful description for the angular distributions were obtained except too much structure in the forward angles. The results of this paper show that, the folding potential for theα- ²⁰Ne and ¹⁶O - ²⁰Ne derived by theα+¹⁶O model of ²⁰Ne nucleus can describe the angular distributions of theα- ²⁰Ne and ¹⁶O - ²⁰Ne elastic scattering reasonably, especially the backward rise in the elastic cross section.