Folding model analysis of elastic and inelastic proton scattering on Sulfur isotopes

Details Folding model analysis of elastic and inelastic proton scattering on Sulfur isotopes Folding model analysis of elastic and inelastic proton scattering on Sulfur isotopes

2002-04-02

arxiv.org/abs/nucl-th/0204007v1

Nucl.Phys. A706 (2002) 61-84

Physics

Nuclear Physics

Nuclear Theory

24 pages, 11 figures, accepted for publication in Nucl. Phys. A

Scientific paper

10.1016/S0375-9474(02)00866-7

The folding formalism for the nucleon-nucleus optical potential and inelastic form factor is applied to study elastic and inelastic proton scattering on 30-40S isotopes. A recently developed realistic density dependent M3Y interaction, well tested in the folding analysis of nucleus-nucleus elastic and inelastic scattering, is used as effective NN interaction. The nuclear ground state and transition densities (for the 2+ excitations in Sulfur isotopes) are obtained in the Hartree-Fock-BCS and QRPA approaches, respectively. The best fit ratios of transition moments Mn/Mp for the lowest 2+ states in Sulfur isotopes are compared to those obtained earlier in the DWBA analysis of the same data using the same structure model and inelastic form factors obtained with the JLM effective interaction. Our folding+DWBA analysis has shown quite a strong isovector mixing in the elastic and inelastic scattering channels for the neutron rich 38,40S nuclei. In particular, the relative strength of the isovector part of the transition potential required by the inelastic p+38S data is significantly stronger than that obtained with the corresponding QRPA transition density.

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