Nuclear shape coexistence: A study of the even-even Hg isotopes using the interacting boson model with configuration mixing
Abstract
Background: The Po, Pb, Hg, and Pt region is known for the presence of coexisting structures that correspond to different particle-hole configurations in the Shell Model language or equivalently to nuclear shapes with different deformation. Purpose: We intend to study the configuration mixing phenomenon in the Hg isotopes and to understand how different observables are influenced by it. Method: We study in detail a long chain of mercury isotopes, Hg, using the interacting boson model with configuration mixing. The parameters of the Hamiltonians are fixed through a least square fit to the known energies and absolute B(E2) transition rates of states up to MeV. Results: We obtained the IBM-CM Hamiltonians and we calculate excitation energies, B(E2)'s, quadrupole shape invariants, wave functions, isotopic shifts, and mean field energy surfaces. Conclusions: We obtain a fairly good agreement with the experimental data for all the studied observables and we conclude that the Hamiltonian and the states we obtain constitute a good approximation to the Hg isotopes.
Keywords
Cite
@article{arxiv.1312.4595,
title = {Nuclear shape coexistence: A study of the even-even Hg isotopes using the interacting boson model with configuration mixing},
author = {J. E. Garcia-Ramos and K. Heyde},
journal= {arXiv preprint arXiv:1312.4595},
year = {2015}
}
Comments
Submitted to PRC