The Nuclear Shell Model Toward the Drip Lines

Details The Nuclear Shell Model Toward the Drip Lines The Nuclear Shell Model Toward the Drip Lines

2011-09-26

arxiv.org/abs/1109.5623v1

Physics

Nuclear Physics

Nuclear Theory

Proceedings of the Nordic Conference in Nuclear Physics 2011, Stockholm, to appear in Physica Scripta

Scientific paper

We describe the "islands of inversion" that occur when approaching the neutron drip line around the magic numbers N=20, N=28 and N=40 in the framework of the Interacting Shell Model in very large valence spaces. We explain these configuration inversions (and the associated shape transitions) as the result of the competition between the spherical mean field (monopole) which favors magicity and the correlations (multipole) which favor deformed intruder states. We also show that the N=20 and N=28 islands are in reallity a single one, which for the Magnesium isotopes is limited by N=18 and N=32.

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