Abstract
The structures of excited states in $^{34}\mathrm{S}$ are investigated using the antisymmetrized molecular dynamics and generator coordinate method (GCM). The GCM basis wave functions are calculated via energy variation with a constraint on the quadrupole deformation parameter $\ensuremath{\beta}$. By applying the GCM after parity and angular momentum projections, the coexistence of two positive- and one negative-parity superdeformed (SD) bands are predicted, and low-lying states and other deformed bands are obtained. The SD bands have structures of $^{16}\mathrm{O}+^{16}\mathrm{O}$ + two valence neutrons in molecular orbitals around the two $^{16}\mathrm{O}$ cores in a cluster picture. The configurations of the two valence neutrons are ${\ensuremath{\delta}}^{2}$ and ${\ensuremath{\pi}}^{2}$ for the positive-parity SD bands and ${\ensuremath{\pi}}^{1}{\ensuremath{\delta}}^{1}$ for the negative-parity SD band. The structural changes of the yrast states are also discussed.
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