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Phase transitions and critical points in the rare-earth region

 

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Author: García Ramos, José Enrique
Arias Carrasco, José Miguel
Barea, J.
Frank, A.
Department: Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear2003
Date: 2003-08-01
Published in: Physical Review C - Nuclear Physics, 68 (2), 024307-1-024307-11.
Document type: Article
Abstract: A systematic study of isotope chains in the rare-earth region is presented. For chains 60 144 2 154Nd, 62 146 2 160Sm, 64 148 2 162Gd, and 66 150 2 166 Dy, energy levels, E2 transition rates, and two-neutron separation energies are described by using the most general ~ up to two-body terms interacting boson model ~ IBM Hamiltonian. For each isotope chain a general fit is performed in such a way that all parameters but one are kept fixed, to describe the whole chain. In this region, nuclei evolve from spherical to deformed shapes and a method based on catastrophe theory, in combination with a coherent-state analysis to generate the IBM energy surfaces, is used to identify critical phase transition points.
Cite: García Ramos, J.E., Arias Carrasco, J.M., Barea, J. y Frank, A. (2003). Phase transitions and critical points in the rare-earth region. Physical Review C - Nuclear Physics, 68 (2), 024307-1-024307-11.
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URI: http://hdl.handle.net/11441/62425

DOI: 10.1103/PhysRevC.68.024307

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