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Evolution of deformations in medium-mass nuclei

H. Sagawa·X. R. Zhou·X. Z. Zhang
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Abstract

Evolution of quadrupole deformations in $sd$ and $pf$ shell nuclei with mass A= 18$\sim$56 is studied by using deformed Skyrme Hartree-Fock (HF) model with pairing correlations. We point out that the quadrupole deformations of the nuclei with the isospin T=0 and T=1 show strong mass number dependence as a clear manifestation of dynamical evolution of deformation in nuclear many-body systems. The competition between the deformation driving particle-vibration coupling and the closed shell structure is shown in a systematic study of the ratios between the proton and neutron deformations in nuclei with T=$|$T$_z|$=1. Calculated quadrupole and hexadecapole deformations are compared with shell model results and available experimental data. A relation between the skin thickness and the intrinsic Q$_2$ moments is also discussed.

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H. Sagawa, X. R. Zhou, X. Z. Zhang. 2005-10-28. Evolution of deformations in medium-mass nuclei. https://doi.org/10.1103/physrevc.72.054311

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