Phase transitions in the interacting boson fermion model: The {gamma}unstable case
Abstract
The phase transition around the critical point in the evolution from spherical to deformed {gamma}unstable shapes is investigated in odd nuclei within the interacting boson fermion model. We consider the particular case of an odd j=3/2 particle coupled to an eveneven boson core that undergoes a transition from spherical U(5) to {gamma}unstable O(6) situation. The particular choice of the j=3/2 orbital preserves in the odd case the condition of {gamma}instability of the system. As a consequence, energy spectrum and electromagnetic transitions, in correspondence of the critical point, display behaviors qualitatively similar to those of the even core. The results are also in qualitative agreement with the recently proposed E(5/4) model, although few differences are present, due to the different nature of the two schemes.
 Authors:
 Departamento de Fisica Atomica, Molecular y Nuclear, Facultad de Fisica, Universidad de Sevilla, Apartado 1065, E41080 Sevilla (Spain)
 Dipartimento di Fisica Galileo Galilei and INFN, Via Marzolo 8, I35131 Padova (Italy)
 Publication Date:
 OSTI Identifier:
 20771067
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 72; Journal Issue: 6; Other Information: DOI: 10.1103/PhysRevC.72.061302; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; DEFORMED NUCLEI; ENERGY SPECTRA; ENERGYLEVEL TRANSITIONS; FERMIONS; INSTABILITY; INTERACTING BOSON MODEL; PHASE TRANSFORMATIONS; SPHERICAL CONFIGURATION; U5 GROUPS
Citation Formats
Alonso, C.E., Arias, J.M., Fortunato, L., and Vitturi, A. Phase transitions in the interacting boson fermion model: The {gamma}unstable case. United States: N. p., 2005.
Web. doi:10.1103/PhysRevC.72.061302.
Alonso, C.E., Arias, J.M., Fortunato, L., & Vitturi, A. Phase transitions in the interacting boson fermion model: The {gamma}unstable case. United States. doi:10.1103/PhysRevC.72.061302.
Alonso, C.E., Arias, J.M., Fortunato, L., and Vitturi, A. Thu .
"Phase transitions in the interacting boson fermion model: The {gamma}unstable case". United States.
doi:10.1103/PhysRevC.72.061302.
@article{osti_20771067,
title = {Phase transitions in the interacting boson fermion model: The {gamma}unstable case},
author = {Alonso, C.E. and Arias, J.M. and Fortunato, L. and Vitturi, A.},
abstractNote = {The phase transition around the critical point in the evolution from spherical to deformed {gamma}unstable shapes is investigated in odd nuclei within the interacting boson fermion model. We consider the particular case of an odd j=3/2 particle coupled to an eveneven boson core that undergoes a transition from spherical U(5) to {gamma}unstable O(6) situation. The particular choice of the j=3/2 orbital preserves in the odd case the condition of {gamma}instability of the system. As a consequence, energy spectrum and electromagnetic transitions, in correspondence of the critical point, display behaviors qualitatively similar to those of the even core. The results are also in qualitative agreement with the recently proposed E(5/4) model, although few differences are present, due to the different nature of the two schemes.},
doi = {10.1103/PhysRevC.72.061302},
journal = {Physical Review. C, Nuclear Physics},
number = 6,
volume = 72,
place = {United States},
year = {Thu Dec 15 00:00:00 EST 2005},
month = {Thu Dec 15 00:00:00 EST 2005}
}

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