Low-lying dipole response in the stable {sup 40,48}Ca nuclei within the second random-phase approximation

Journal Article · Sat Oct 20 00:00:00 EDT 2012 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4764236· OSTI ID:22075605

Gambacurta, D; Grasso, M; Catara, F ^[1]

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1. GANIL,CEA/DSM-CNRS/IN2P3, Caen (France)

The low-lying dipole strength distributions of {sup 40}CaCa and {sup 48}Ca, in the energy region between 5 and 10 MeV, are studied within the second random phase approximation (RPA) with Skyrme interaction. Standard RPA models do not usually predict any presence of strength in this energy region, while experimentally a significant amount of strength is found. The inclusion of the 2 particle -2 hole configurations allows to obtain a description in a rather good agreement with the experimental data. The properties of the most collective state are analyzed in terms of its 1 particle -1 hole nature and its transition densities.

• OSTI ID: 22075605
• Journal Information: AIP Conference Proceedings, Vol. 1491, Issue 1; Conference: Conference on nuclear structure and dynamics 2012, Opatija (Croatia), 9-13 Jul 2012; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CALCIUM 40
CALCIUM 48
E1-TRANSITIONS
M1-TRANSITIONS
MEV RANGE
NUCLEAR ELECTRIC MOMENTS
NUCLEAR FORCES
NUCLEAR STRUCTURE
PARTICLE-HOLE MODEL
RANDOM PHASE APPROXIMATION
SKYRME POTENTIAL
STRENGTH FUNCTIONS