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Spectroscopy and intruder configurations of ³³Mg and ³¹Ne studied with antisymmetrized molecular dynamics

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arxiv 1105.3281 v1 pith:OSVIYX3I submitted 2011-05-17 nucl-th

Spectroscopy and intruder configurations of ³³Mg and ³¹Ne studied with antisymmetrized molecular dynamics

classification nucl-th
keywords configurationsexcitationneutronantisymmetrizeddeformeddynamicsenergyintruder
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Excitation spectra and neutron single particle configurations of $^{33}$Mg and $^{31}$Ne are investigated by using antisymmetrized molecular dynamics combined with generator coordinate method. It is shown that both nuclei have strongly deformed $3/2^-$ ground state with a $3p2h$ configuration. The excitation spectra are qualitatively understood in terms of the Nilsson model and the calculation has shown the coexistence of different intruder configurations within small excitation energy. The calculated one neutron separation energy of $^{31}$Ne is rather small ($S_n=250$ keV) and implies a p-wave one neutron halo with a strongly deformed core.

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