Elsevier

Physics Letters B

Volume 218, Issue 3, 23 February 1989, Pages 287-290
Physics Letters B

Equivalence of the spherical and deformed shell-model approach to intruder states

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Abstract

We point out that the description of intruder states, incorporating particle-hole (ph) excitation across a closed shell in the spherical shell model or a description starting from the Nilsson model are equivalent. We furthermore indicate that the major part of the nucleon-nucleon interaction, responsible for the low excitation energy of intruder states comes as a two-body proton-neutron quadrupole interaction in the spherical shell model. In the deformed shell model, quadrupole binding energy is gained mainly through the one-body part of the potential.

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1

Research assistant at the “National Fonds voor Wetenschappelijk Onderzoek”.

2

Senior research associate at the “National Fonds voor Wetenschappelijk Onderzoek”.

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