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94796.pdf (1.94 MB)

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1995

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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/12243

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

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Recurs relacionat

http://dx.doi.org/10.1103/PhysRevC.51.3040

Resum

ABSTRACT 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 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 (e,e’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.

Matèries

Estructura nuclear, Reaccions nuclears

Matèries (anglès)

Nuclear structure, Nuclear reactions

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Articles publicats en revistes (Física Quàntica i Astrofísica)

Citació

MÜTHER, Herbert, POLLS MARTÍ, Artur and DICKHOFF, Willem H. Momentum and energy distributions of nucleous in finite nuclei due to short-range correlations. Physical Review C. 1995. Vol. 51, num. 6, pags. 3040-3051. ISSN 0556-2813. [consulted: 11 of August of 2026]. Available at: https://hdl.handle.net/2445/12243

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