Self-consistent continuum random-phase approximation calculations with finite-range interactions

Journal Article · Fri Apr 15 00:00:00 EDT 2011 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.83.044324· OSTI ID:21499575

De Donno, V; Co', G; Anguiano, M; Lallena, A M ^[1]

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1. Dipartimento di Fisica, Universita del Salento and INFN Sezione di Lecce, Via Arnesano, I-73100 Lecce (Italy)

We present a technique that treats, without approximations, the continuum part of the excitation spectrum in random phase approximation calculations with finite-range interactions. The interaction used in Hartree-Fock calculations to generate the single-particle basis is also used in continuum random phase approximation calculations. We show results for electric dipole and quadrupole excitations in {sup 16}O, {sup 22}O, {sup 24}O, {sup 40}Ca, {sup 48}Ca, and {sup 52}Ca nuclei. We compare our results with those of the traditional discrete random phase approximation, with continuum independent-particle model results, and with results obtained by a phenomenological random phase approximation approach. We study the relevance of the continuum, of the residual interaction, and of the self-consistency. We also compare our results with the available total photoabsorption cross-section data.

• OSTI ID: 21499575
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 83, Issue 4; Other Information: DOI: 10.1103/PhysRevC.83.044324; (c) 2011 American Institute of Physics; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CALCIUM 40
CALCIUM 48
CALCIUM 52
COMPARATIVE EVALUATIONS
COMPUTERIZED SIMULATION
CROSS SECTIONS
ELECTRIC DIPOLES
EXCITATION
FINITE-RANGE INTERACTIONS
HARTREE-FOCK METHOD
OXYGEN 16
OXYGEN 22
OXYGEN 24
QUADRUPOLES
RANDOM PHASE APPROXIMATION
RESIDUAL INTERACTIONS
SINGLE-PARTICLE MODEL
SPECTRA
ALKALINE EARTH ISOTOPES
APPROXIMATIONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CALCIUM ISOTOPES
CALCULATION METHODS
DIPOLES
ENERGY-LEVEL TRANSITIONS
EVALUATION
EVEN-EVEN NUCLEI
INTERACTIONS
INTERMEDIATE MASS NUCLEI
ISOTOPES
LIGHT NUCLEI
MATHEMATICAL MODELS
MILLISECONDS LIVING RADIOISOTOPES
MULTIPOLES
NUCLEAR MODELS
NUCLEI
OXYGEN ISOTOPES
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
SIMULATION
STABLE ISOTOPES