Configuration mixing description of the nucleus $^{44}$S

Details Configuration mixing description of the nucleus $^{44}$S Configuration mixing description of the nucleus $^{44}$S

2011-09-29

arxiv.org/abs/1109.6516v2

Physics

Nuclear Physics

Nuclear Theory

Corrected typo (level at 3248 keV)

Scientific paper

We study the structure of the neutron rich $^{44}$S isotope with modern configuration mixing methods based on the Gogny interaction including beyond-mean-field effects. Restoration of particle number and rotational symmetries are taken into account as well as shape mixing in the whole triaxial $(\beta_{2},\gamma)$ plane. We obtain a qualitative agreement between the calculated spectrum and the experimental data reported recently. Very extended collective wave functions in the $(\beta_2,\gamma)$ plane are found for the lowest states, corresponding to very flat potentials, indicating strong configuration mixing and supporting the weakening of the N=28 magic number.

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