Calculations of 8He + p elastic scattering cross sections using the microscopic optical potential

Abstract

An approach to calculate microscopic optical potential (OP) with the real part obtained by a folding procedure and with the imaginary part inherent in the high-energy approximation (HEA) is applied to study the 8 He+p elastic scattering data at energies of tens of MeV/nucleon (MeV/N). The neutron and proton density distributions obtained in different models for 8 He are utilized in the calculations of the differential cross sections. The role of the spin-orbit potential is studied. Comparison of the calculations with the available experimental data on the elastic scattering differential cross sections at beam energies of 15.7, 26.25, 32, 66 and 73 MeV/N is performed. The problem of the ambiguities of the depths of each component of the optical potential is considered by means of the imposed physical criterion related to the known behavior of the volume integrals as functions of the incident energy. It is shown also that the role of the surface absorption is rather important, in particular for the lowest incident energies (e.g., 15.7 and 26.25 MeV/nucleon).

Eikonal Approximation for K+–Nucleus Elastic Scattering

“…K+-6 Li: Figures (4)(5) show our calculation of K+-6Li using different types of target density model (CH, HO, 2PF, 3PF) compared with experimental data. The experimental data is taken from Ref.…”

“…Therefore the experimental data on elastic differential cross sections at intermediate energies [1,2] are under the permanent attention of theoreticians for years. Many optical model analyses of the elastic scattering of kaons from nuclei have been carried out using potentials of the Kisslinger form [3], its local equivalent form is introduced by Johnson [4], microscopic optical potential [5], and other forms for different nuclear density models.…”

“…Lukyanov [5] used the derived microscopic optical potential in calculation of the differential elasticscattering cross sections for the interaction of K + mesons with 12 Originally, the eikonal approximation has taken a considerable attention after the work of Glauber [13] who obtained a Fourier-Bessel representation of the scattering amplitude which justified for all angles on general grounds of analyticity in the momentum transfer. Glauber extended it by using a frozen target approximation to convert the many body scattering problem into a potential scattering problem in which the potential depends on the coordinates of the target.Wallace [14] proposed a sequence of four approximations to the exact impact parameter of the scatterin matrix.…”

Using the microscopic optical potential model to analyze 10,11Be elastic scattering on protons and nuclei

“…Only two or three parameters are varied in such an OP: the renormalization coefficients of the calculated value (depth) of the real, imaginary, and spin-orbit parts of the potential. In this work, we continue the cycle of studies [10][11][12][13][14][15][16][17], in which the scattering of exotic light 6,8 He and 11 Li nuclei on protons and nuclei was stud ied using the microscopic optical potential.…”