Quasi-elastic barrier distribution and derivation of the nuclear matter diffuseness
J. F. P. Huiza 1*, E. Crema 2, D. S. Monteiro 3, J. M. B. Shorto 2, R. F. Simões 2, A. Barioni 2, P. R. S. Gomes 3
1 Departamento de Química e Exatas, Universidade Estadual do Sudoeste da Bahia, BA, Brazil.
2 Departamento de Física Nuclear, Instituto de Física da Universidade de São Paulo, SP, Brazil.
3 Instituto de Física, Universidade Federal Fluminense, RJ, Brazil.
In this work, we present the quasi‐elastic excitation function (QEF) for the 17O+ 64Zn system, it was measured at energies near and below the Coulomb barrier, and θlab =161o . The corresponding quasi‐elastic barrier distribution was derived. Also, the excitation function for neutron stripping reactions was measured in the same conditions that QEF, and its correspondent experimental values of the spectroscopy factors were deduced by comparison between theoretical predictions using the code FRESCO and experimental data. A reasonably good agreement was obtained between the quasi-elastic barrier distribution with the coupled-channel calculations including a very large number of channels. The analysis shows that three channels are very important: two inelastic channels, 64Zn(2+) and 17O(1/2+), and one-neutron transfer channel. Other interesting result obtained is that the quasi-elastic barrier distribution shows to be very sensitive to very little alterations of nuclear matter diffuseness values.
Fig. (a) Quasi-elastic excitation function (b) quasi-elastic barrier distribution.