From Dirac phenomenology to deuteron-nucleus elastic scattering at intermediate energies

Journal Article · Thu Oct 31 23:00:00 EST 1991 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.44.2100· OSTI ID:5128490

Amorim, A; Santos, F D ^[1]

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1. Centro de Fisica Nuclear da Universidade de Lisboa, Avenida Gama Pinto 2, 1699 Lisboa (Portugal)

A discussion of relativistic microscopic models of deuteron-nucleus scattering at intermediate energies is presented. Calculations based on various relativistic models, which take into account explicitly the deuteron internal structure, and on the nonrelativistic folding model are compared with elastic-scattering data from {sup 40}Ca and {sup 58}Ni at 400 and 700 MeV. The same global nucleon-nucleus Dirac optical potentials were used throughout. We find that the direct impulse approximation, where the deuteron-nucleus {ital T} matrix is the expectation value of the sum of the nucleon-nucleus {ital T} matrices in the deuteron, gives a reasonable description of the data. However, the fact that the best agreement is provided by the nonrelativistic folding model indicates the need for a more realistic treatment of multiple scattering and off-shell effects in the relativistic microscopic models.

• OSTI ID: 5128490
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 44:5; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

653003* -- Nuclear Theory-- Nuclear Reactions & Scattering
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CALCIUM 40 TARGET
CHARGED-PARTICLE REACTIONS
DEUTERON REACTIONS
DIRAC OPERATORS
ELASTIC SCATTERING
ENERGY RANGE
FOLDING MODEL
IMPULSE APPROXIMATION
MATHEMATICAL MODELS
MATHEMATICAL OPERATORS
MATRICES
MEV RANGE
MEV RANGE 100-1000
NUCLEAR MODELS
NUCLEAR REACTIONS
OPTICAL MODELS
QUANTUM OPERATORS
S MATRIX
SCATTERING
TARGETS