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The intruder feature of 31Mg and the coexistence of many particle and many hole states

Masaaki Kimura
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Abstract

The low-lying level structure of $^{31}{\rm Mg}$ has been investigated by the antisymmetrized molecular dynamics (AMD) plus generator coordinate method (GCM) with the Gogny D1S force. It is shown that the N=20 magic number is broken and the ground state has the pure neutron $2p3h$ configuration. The coexistence of many particle and many hole states at very low excitation energy is discussed.

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Masaaki Kimura. 2007-02-04. The intruder feature of 31Mg and the coexistence of many particle and many hole states. https://doi.org/10.1103/physrevc.75.041302

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