Nuclear structure approach to the calculation of the imaginary alpha-nucleus optical potential. [31 and 100 MeV]
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 RPA 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. 9 figures, 1 table.
- Research Organization:
- Kernforschungsanlage Juelich G.m.b.H. (Germany, F.R.). Inst. fuer Kernphysik; Oregon State Univ., Corvallis (USA). Dept. of Physics
- DOE Contract Number:
- AT06-79ER10405
- OSTI ID:
- 6615112
- Report Number(s):
- DOE/ER/10405-2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
651515* -- Nuclear Properties & Reactions
A=39-58
Theoretical-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA REACTIONS
ANGULAR DISTRIBUTION
CALCIUM 40 TARGET
CHARGED-PARTICLE REACTIONS
DATA
DISTRIBUTION
ELASTIC SCATTERING
ENERGY RANGE
INFORMATION
MEV RANGE
MEV RANGE 10-100
NUCLEAR POTENTIAL
NUCLEAR REACTIONS
NUMERICAL DATA
OPTICAL MODELS
POTENTIALS
RANDOM PHASE APPROXIMATION
SCATTERING
TARGETS
THEORETICAL DATA
A=39-58
Theoretical-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA REACTIONS
ANGULAR DISTRIBUTION
CALCIUM 40 TARGET
CHARGED-PARTICLE REACTIONS
DATA
DISTRIBUTION
ELASTIC SCATTERING
ENERGY RANGE
INFORMATION
MEV RANGE
MEV RANGE 10-100
NUCLEAR POTENTIAL
NUCLEAR REACTIONS
NUMERICAL DATA
OPTICAL MODELS
POTENTIALS
RANDOM PHASE APPROXIMATION
SCATTERING
TARGETS
THEORETICAL DATA