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Title: Anharmonic vibrations around a triaxial nuclear deformation “frozen” to γ = 30°

The Davydov-Chaban Hamiltonian with a sextic oscillator potential for the variable β and γ fixed to 30° is exactly solved for the ground and β bands and approximately for the γ band. The model is called Z(4)-Sextic in connection with the already established Z(4) solution. The energy spectra, normalized to the energy of the first excited state, and several B(E2) transition probabilities, normalized to the B(E2) transition from the first excited state to the ground state, depend on a single parameter α. By varying α within a sufficiently large interval, a shape phase transition from an approximately spherical shape to a deformed one is evidenced.
Authors:
;  [1]
  1. Department of Theoretical Physics, National Institute of Physics and Nuclear Engineering, Str. Reactorului 30, RO-077125, POB-MG6, Bucharest-Magurele (Romania)
Publication Date:
OSTI Identifier:
22494337
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1694; Journal Issue: 1; Conference: TIM14 physics conference on physics without frontiers, Timisoara (Romania), 20-22 Nov 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; APPROXIMATIONS; E2-TRANSITIONS; ENERGY SPECTRA; EXACT SOLUTIONS; EXCITED STATES; GROUND STATES; HAMILTONIANS; NUCLEAR DEFORMATION; OSCILLATORS; PROBABILITY; SPHERICAL CONFIGURATION