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Simple phenomenology for the ground-state bands of even-even nuclei

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Publication Date
Identifiers
DOI: 10.1103/PhysRevC.50.2794
OAI: oai:inspirehep.net:391677
Source
INSPIRE-HEP
Keywords
  • Theory-Nucl
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Abstract

It is observed that the even-even nuclei having identical NpNn/Δ values exhibit identical excitation energies and/or energy ratios (EJ/E2,EJ/E4) in their ground-state bands (g.s.b.). Np (Nn) is the valence proton (neutron) number and Δ is the average pairing gap, (Δp+Δn)/2. It is shown that this correlation is a manifestation of a very simple but uniform dependence of the excitation energies of the g.s.b. of even-even nuclei, spanning a wide mass region (70≤A≤244), on the ratio of their pairing and n-p interaction energies. An explicit form of this dependence is phenomenologically deduced and subsequently used to study the development of collectivity, existence of subshell closures and some other nuclear systematics.

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