Nuclear structure approach to the calculation of the imaginary alpha-nucleus optical potential

Journal Article · Fri Jan 01 04:00:00 EST 1982 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.25.180· OSTI ID:5541247

Dermawan, H; Osterfeld, F; Madsen, V A

A microscopic calculation of the second-order imaginary optical potential for /sup 40/Ca(..cap alpha..,..cap alpha..) is made for incident energies of 31 and 100 MeV using random phase approximation MeV using transition densities for intermediate excited states. The projectile is treated as an elementary particle, and the alpha-nucleon interaction is normalized by fitting 3/sup -/ inelastic cross sections with a folded M3Y potential. The use of an optical Green's function for the intermediate propagator is found to be important. Equivalent local potentials are obtained and used to calculate elastic scattering cross sections. Agreement with low-angle experimental data is fair at 31 MeV but at 100 MeV the calculated cross sections indicate much too little absorption.

• Research Organization: Institut fuer Kernphysik, Kernforschungsanlage Juelich, D-5170 Juelich, West Germany
• OSTI ID: 5541247
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 25:1; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651515* -- Nuclear Properties & Reactions
A=39-58
Theoretical-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA REACTIONS
ANGULAR MOMENTUM
CALCIUM 40 TARGET
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
ELASTIC SCATTERING
ENERGY LEVELS
ENERGY RANGE
FUNCTIONS
GREEN FUNCTION
INELASTIC SCATTERING
MEV RANGE
MEV RANGE 10-100
NUCLEAR REACTIONS
NUCLEAR STRUCTURE
OPTICAL MODELS
PARITY
PARTICLE PROPERTIES
PROPAGATOR
RANDOM PHASE APPROXIMATION
SCATTERING
SPIN
TARGETS