Abstract

PADILLA-RODAL, E; CASTANOS, O; BIJKER, R  and  GALINDO-URIBARRI, A. IBM-2 configuration mixing and its geometric interpretation for germanium isotopes. Rev. mex. fis. [online]. 2006, vol.52, suppl.1, pp.57-62. ISSN 0035-001X.

The low energy spectra, electric quadrupole transitions, and quadrupole moments for the germanium isotopes are determined in the formalism of the IBM-2 with configuration mixing. These calculated observables reproduce well the available experimental information including the newly obtained data for radioactive neutron-rich ⁷⁸,⁸⁰,⁸²Ge isotopes. Using a matrix formulation, a geometric interpretation of the model was established. The two energy surfaces determined after mixing, carry information about the deformation parameters of the nucleus. For the even-even Ge isotopes the obtained results are consistent with the shape transition that takes place around the neutron number N = 40.

Keywords : Interacting boson model; configuration mixing; shape transition; germanium isotopes.

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