Momentum and energy distributions of nucleons in finite nuclei due to short-range correlations

Journal Article · Thu Jun 01 04:00:00 EDT 1995 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.51.3040· OSTI ID:55145

Muether, H ^[1]; Polls, A ^[2]; Dickhoff, W H ^[3]

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1. Institut fuer Theoretische Physik, Universitaet Tuebingen, Auf der Morgenstelle 14, D-72076 Tuebingen (Germany)
2. Department d`Estructura i Constituens de la Materia, Universitad de Barcelona, Diagonal 647, E-08028 Barcelona (Spain)
3. Department of Physics, Washington University, St. Louis, Missouri 63130 (United States)

The influence of short-range correlations on the momentum and energy distribution of nucleons in nuclei is evaluated assuming a realistic meson-exchange potential for the nucleon-nucleon interaction. Using the Green-function approach the calculations are performed directly for the finite nucleus {sup 16}O avoiding the local density approximation and its reference to studies of infinite nuclear matter. The nucleon-nucleon correlations induced by the short-range and tensor components of the interaction yield an enhancement of the momentum distribution at high momenta as compared to the Hartree-Fock description. These high-momentum components should be observed mainly in nucleon knockout reactions like ({ital e},{ital e}{prime}{ital p}) leaving the final nucleus in a state of high excitation energy. Our analysis also demonstrates that non-negligible contributions to the momentum distribution should be found in partial waves which are unoccupied in the simple shell model. The treatment of correlations beyond the Brueckner-Hartree-Fock approximation also yields an improvement for the calculated ground-state properties.

• OSTI ID: 55145
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 6 Vol. 51; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
DENSITY
DISTRIBUTION
ENERGY
EXCHANGE INTERACTIONS
EXCITATION
GREEN FUNCTION
GROUND STATES
HARTREE-FOCK METHOD
KNOCK-OUT REACTIONS
LINEAR MOMENTUM
MESONS
NUCLEAR MATTER
NUCLEON-NUCLEON INTERACTIONS
NUCLEONS
OXYGEN 16
PARTIAL WAVES
SHELL MODELS