Novel source of nonlocality in the optical model

Journal Article · Thu Sep 15 04:00:00 EDT 2011 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.84.034618· OSTI ID:21596769

Jaghoub, M I; Hassan, M F ^[1]; Rawitscher, G H ^[2]

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1. Department of Physics, University of Jordan, P. C. 11942, Amman (Jordan)
2. Department of Physics, University of Connecticut, Storrs, Connecticut 06269 (United States)

In this work we fit neutron-{sup 12}C elastic scattering angular distributions in the energy range 12 to 20 MeV, by adding a velocity-dependent term to the optical potential. This term introduces a wave function gradient, whose coefficient is real and position-dependent, and which represents a nonlocality. We pay special attention to the prominent backscattering minima, which depend sensitively on the incident energies and which are a tell-tale of nonlocalities. Reasonable fits to the analyzing power data are also obtained as a by-product. All our potentials have the form of conventional Woods-Saxon shapes or their derivatives. The number of our parameters (12) is smaller than the number for other local optical potentials, and they vary monotically with energy, while the strengths of the real and imaginary parts of the central potential are nearly constants. Our nonlocality is in contrast to other forms of nonlocalities introduced previously.

• OSTI ID: 21596769
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 3 Vol. 84; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
BACKSCATTERING
BARYONS
BY-PRODUCTS
CARBON 12
CARBON ISOTOPES
CENTRAL POTENTIAL
DIMENSIONLESS NUMBERS
DISTRIBUTION
ELASTIC SCATTERING
ELEMENTARY PARTICLES
ENERGY RANGE
EVEN-EVEN NUCLEI
FERMIONS
FUNCTIONS
HADRONS
ISOTOPES
LIGHT NUCLEI
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 10-100
NEUTRONS
NUCLEAR POTENTIAL
NUCLEI
NUCLEONS
OPTICAL MODELS
POLARIZATION-ASYMMETRY RATIO
POTENTIALS
SCATTERING
STABLE ISOTOPES
VELOCITY
WAVE FUNCTIONS
WOODS-SAXON POTENTIAL