S. P. Weppner

Sensitivities of the proton-nucleus elastic scattering observables of {sup 6}He and {sup 8}He at intermediate energies

We investigate the use of proton-nucleus elastic scattering experiments using secondary beams of {sup 6}He and {sup 8}He to determine the physical structure of these nuclei. The sensitivity of these experiments to nuclear structure is examined by using four different nuclear structure models with different spatial features using a full-folding optical potential model. The results show that elastic scattering at intermediate energies (<100 MeV per nucleon) is not a good constraint to be used to determine features of structure. Therefore researchers should look elsewhere to put constraints on the ground state wave function of the {sup 6}He and {sup 8}He nuclei. (c) 2000 The American Physical Society.

Isospin dependent global nucleon-nucleus optical model at intermediate energies

A global nucleon-nucleus optical potential for elastic scattering has been produced which replicates experimental data to high accuracy and compares well with other recently formulated potentials. The calculation that has been developed describes proton and neutron scattering from target nuclei ranging from carbon to nickel and is applicable for projectile energies from 30 to 160 MeV. With these ranges it is suitable for calculations associated with experiments performed by exotic beam accelerators. The potential has both real and imaginary isovector asymmetry terms to better describe the dynamics of chains of isotopes and mirror nuclei. An analysis of the validity and strength of the asymmetry term is included with connections established to other optical potentials and charge-exchange reaction data.

Elastic Scattering of

Elastic scattering observables (differential cross section and analyzing power) are calculated for the reaction

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He based on a Cluster Description

He(p,p)

Off-shell structures of nucleon-nucleon t matrices and their influence on nucleon-nucleus elastic scattering observables

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Propagator modifications in elastic nucleon-nucleus scattering within the spectator expansion.

He at projectile energies starting at 71 MeV/nucleon. The optical potential needed to describe the reaction is derived describing

Application of multiple scattering theory to lower-energy elastic nucleon-nucleus scattering

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Open shell effects in a microscopic optical potential for elastic scattering of6(8)He

He in terms of a

Microscopic Optical Potentials for Helium-6 Scattering off Protons

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