Validity of local density prescriptions for microscopic calculations of proton nucleus elastic scattering
- Department of Physics, University of Surrey, Guildford, Surrey, GU25XH (United Kingdom)
The validity of the local density approximation as applied to the construction of the nucleon-nucleus optical potential is studied. A Wentzel-Kramers-Brillouin (WKB) local equivalent potential to the second-order term of the Kerman, McManus, and Thaler (KMT) multiple scattering expansion of the nucleon nucleus optical potential is derived. Assuming that the nucleon-nucleon transition amplitude is on the energy shell, we compare the microscopic KMT optical potential with the approximate potential deduced from the nuclear matter limit by use of the local density approximation. Calculations are presented for the nucleon-[sup 16]O system at 135 and 200 MeV incident energies. It is shown that the use of the local density prescription leads to surface peaking of the optical potential. This effect is absent from the second-order term of the optical potential derived microscopically from the KMT approach.
- OSTI ID:
- 6881550
- Journal Information:
- Physical Review, C (Nuclear Physics); (United States), Vol. 50:6; ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
OXYGEN 16 TARGET
PROTON REACTIONS
OPTICAL MODELS
DIRECT REACTIONS
ELASTIC SCATTERING
MEV RANGE 100-1000
POTENTIALS
THEORETICAL DATA
WKB APPROXIMATION
BARYON REACTIONS
CHARGED-PARTICLE REACTIONS
DATA
ENERGY RANGE
HADRON REACTIONS
INFORMATION
MEV RANGE
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUMERICAL DATA
SCATTERING
TARGETS
663300* - Nuclear Reactions & Scattering
General- (1992-)
663430 - Nucleon-Induced Reactions & Scattering- (1992-)
663530 - Nuclear Mass Ranges- A=20-38- (1992-)