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

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.
Authors:
;  [1] ;  [1] ;  [2]
  1. CEA, DAM, DIF F-91297 Arpajon (France)
  2. (France)
Publication Date:
OSTI Identifier:
22492467
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1681; Journal 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)
Country of Publication:
United States
Language:
English
Subject:
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