A calculation of the excitation energy of the 0(+) states and of the 2(+) states is performed using Monte Carlo methods for the nucleus Dy-154. The Hamiltonian is assumed to be a monopole+quadrupole pairing+quadrupole with the parameters fixed by the spectroscopic Monte Carlo method so as to reproduce the experimental excitation energies of the yrast states up to J = 8 within the 50-82 and 82-126 proton and neutron major shells. The resulting Hamiltonian has been diagonalized in the J = 0 and J = 2 subspaces using the quantum Monte Carlo method. The size of the basis is fixed by comparing the yrast energies obtained with the basis -independent spectroscopic Monte Carlo method, and those obtained with the quantum Monte Carlo method. The excitation energy of the 0(2)(+) is much higher than the experimental value. The structure of the 0(2,3)(+) and of the 2(2,3)(+) eigenstates is discussed in terms of fluctuating intrinsic states and resolved in terms of the deformation variables.
A calculation of the position of the quasi-beta and quasi-gamma bands for the transitional nucleus Dy-154 with Monte Carlo methods / G. Puddu. - In: JOURNAL OF PHYSICS. G, NUCLEAR AND PARTICLE PHYSICS. - ISSN 0954-3899. - 31:7(2005), pp. B11-B17.
|Titolo:||A calculation of the position of the quasi-beta and quasi-gamma bands for the transitional nucleus Dy-154 with Monte Carlo methods|
PUDDU, GIOVANNI (Primo)
|Parole Chiave:||Projected shell-model ; deformed-nuclei ; region|
|Settore Scientifico Disciplinare:||Settore FIS/04 - Fisica Nucleare e Subnucleare|
|Data di pubblicazione:||2005|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1088/0954-3899/31/7/B02|
|Appare nelle tipologie:||01 - Articolo su periodico|