Abstract
The proton - nucleus optical potentials generated by folding the calculated complex, density and energy dependent g- matrices (with and without three-body forces (TBF): Urbana IX (UVIX) and TNI) over the target nucleon density distributions obtained from the relativistic mean field theory, are used for the calculation of the differential cross section dσ / dθ , polarization Ay , spin rotation function (Q). for 65 and 200 MeV polarized proton incident on 40 Ca and 208 Pb . The agreement with the experiment is rather impressive. It is found that the inclusion of TBF (Urbana IX )UVIX) and TNI) reduces the strength of the central part of the optical potential in the nuclear interior and affects the calculated spin-orbit potential only marginally and leads to an improvement in the agreement with the corresponding experimental results.
Highlights
The nucleon – nucleus (n - A) scattering serves a useful tool to study nuclear properties .The observables are the differential cross section, analyzing power or asymmetry ( Ay ) and the spin rotation function ( Q )
The details of the calculations and the self consistency are described in detail in [5,6]
It is observed that the inclusion of three body force (TBF) (UVIX and TNI) : Reduces both the real and imaginary parts of the central parts of the potential in the interior region ( r < 5 fm) of the target at both the energies
Summary
The nucleon – nucleus (n - A) scattering serves a useful tool to study nuclear properties .The observables are the differential cross section ( dσ / dθ ), analyzing power or asymmetry ( Ay ) and the spin rotation function ( Q ). The Brueckner – Hartree – Fock (BHF) based microscopic optical potential (OP) used in the calculation of these observables requires only two inputs: (1) The nucleon – nucleon (N – N) interaction to calculate the reaction or g - matrix and (2) the nucleon density distributions of target nuclei to generate the optical potential
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