Introduction of a valence space in QRPA: Impact on vibrational mass parameters and spectroscopy

Journal Article · Thu Oct 15 00:00:00 EDT 2015 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4932267· OSTI ID:22492467

Péru, S. ^[1]; Deloncle, I. ^[1]

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1. CEA, DAM, DIF F-91297 Arpajon (France)

For the first time, using a unique finite range interaction (D1M Gogny force), a fully coherent and time-feasible calculation of the Bohr Hamiltonian vibrational mass is envisioned in a Hartree-Fock-Bogoliubov + Quasiparticle Random Phase Approximation (QRPA) framework. In order to reach handable computation time, we evaluate the feasibility of this method by considering the insertion of a valence space for QRPA. We validate our approach in the even-even tin isotopes comparing the convergence scheme of the mass parameter with those of built-in QRPA outputs: excited state energy and reduced transition probability. The seeming convergence of these intrinsic quantities is shown to be misleading and the difference with the theoretical expected value is quantified. This work is a primary step towards the systematic calculation of mass parameters.

• OSTI ID: 22492467
• Journal Information: AIP Conference Proceedings, Vol. 1681, Issue 1; Conference: Nuclear Structure and Dynamics '15: 3. international nuclear physics conference on nuclear structure and dynamics, Portoroz (Slovenia), 14-19 Jun 2015; Other Information: (c) 2015 AIP Publishing LLC; 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
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COMPARATIVE EVALUATIONS
EVEN-EVEN NUCLEI
FINITE-RANGE INTERACTIONS
HAMILTONIANS
HARTREE-FOCK-BOGOLYUBOV THEORY
MASS SPECTROSCOPY
QUASI PARTICLES
RANDOM PHASE APPROXIMATION
TIN ISOTOPES
VALENCE
VIBRATIONAL STATES