Microscopic calculation and local approximation of the spatial dependence of the pairing field with bare and induced interactions

Journal Article · Fri Aug 15 00:00:00 EDT 2008 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.78.024315· OSTI ID:21192112

Pastore, A ^[1]; Barranco, F ^[2]; Broglia, R A ^[1]; Vigezzi, E ^[3]

---

1. Dipartimento di Fisica, Universita degli Studi di Milano, via Celoria 16, I-20133 Milano (Italy)
2. Departamento de Fisica Aplicada III, Escuela Superior de Ingenieros, Camino de los Descubrimientos s/n, E-41092 Sevilla (Spain)
3. INFN, Sezione di Milano, via Celoria 16, I-20133 Milano (Italy)

The bare nucleon-nucleon interaction is essential for the production of pair correlations in nuclei, but an important contribution also arises from the induced interaction resulting from the exchange of collective vibrations between nucleons moving in time reversal states close to the Fermi energy. The pairing field resulting from the summed interaction is strongly peaked at the nuclear surface. It is possible to reproduce the detailed spatial dependence of this field by using either a local approximation, which fully takes into account finite size effects, or a contact interaction, with parameters that are quite different from those commonly used in more phenomenological approaches.

• OSTI ID: 21192112
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 78, Issue 2; Other Information: DOI: 10.1103/PhysRevC.78.024315; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
APPROXIMATIONS
CORRELATIONS
NUCLEI
NUCLEON-NUCLEON INTERACTIONS
PAIR PRODUCTION
SPACE DEPENDENCE
SURFACES