Microscopic description of spherical to γ-soft shape transitions in Ba and Xe nuclei

Li, Zhipan and Nikšić, Tamara and Vretenar, Dario and Meng, Jie (2010) Microscopic description of spherical to γ-soft shape transitions in Ba and Xe nuclei. Physical Review C, 81 (3). pp. 34316-10. ISSN 0556-2813

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The rapid transition between spherical and γ-soft shapes in Ba and Xe nuclei in the mass region A>130 is analyzed using excitation spectra and collective wave functions obtained by diagonalization of a five-dimensional Hamiltonian for quadrupole vibrational and rotational degrees of freedom, with parameters determined by constrained self-consistent relativistic mean-field calculations for triaxial shapes. The results reproduce the characteristic evolution of excitation spectra and E2 transition probabilities, and in general, a good agreement with available data is obtained. The calculated spectra display fingerprints of a second-order shape phase transition that can approximately be described by analytic solutions corresponding to the E(5) dynamical symmetry.

Item Type: Article
Date: March 2010
Subjects: NATURAL SCIENCES > Physics > Nuclear Physics
Additional Information: Copyright (2010) by the American Physical Society.
Divisions: Faculty of Science > Department of Physics
Project code: 119-1191005-1010
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 31 May 2014 22:14
Last Modified: 24 Feb 2016 15:36
URI: http://digre.pmf.unizg.hr/id/eprint/2048

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