¹⁶O +¹⁶O molecular structures of positive- and negative-parity superdeformed bands in³⁴S

Abstract

The structures of excited states in 34 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 β. 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. S isotopes (Z = 16) are suitable nuclei for studying deformation and clustering caused by excitation. S isotopes are expected to be favorable for the formation of SD bands because Z = 16 is considered a magic number of superdeformation. In terms of clustering, S isotopes are key nuclei in the sd shell. S isotopes are analogs of Be isotopes because those isotopes can form systems consisting of two doubly closed shell nuclei ( 16 O and α for S and Be isotopes, respectively) and valence neutrons. In Be isotopes, structures 201 , 0400 (2016) EPJ Web of Conferences