Superdeformation in asymmetric N>Z nucleus 40Ar

• DOI: 10.1016/j.physletb.2010.02.031
• Publication Date: 2010-02-13T09:32:40Z
• Authors: E. Ideguchi; S. Ota; T. Morikawa; M. Oshima; M. Koizumi; Y. Toh; A. Kimura; H. Harada; K. Furutaka; S. Nakamura; F. Kitatani; Y. Hatsukawa; T. Shizuma; M. Sugawara; H. Miyatake; Y.X. Watanabe; Y. Hirayama; M. Oi
• Keywords: Transition quadrupole moments; 26Mg(18O, 2p2n)40Ar; 0103 physical sciences; Superdeformed shape; FOS: Physical sciences; Nuclear reaction; Nuclear Experiment (nucl-ex); Nuclear Experiment; 01 natural sciences

A rotational band with five $\gamma$-ray transitions ranging from 2$^{+}$ to 12$^{+}$ states was identified in $^{40}$Ar. This is linked through $\gamma$ the excited 2$^{+}$, 4$^{+}$ and 6$^{+}$ levels low-lying states; this determines excitation energy spin-parity of band. The deduced transition quadrupole moment 1.45$^{+0.49}_{-0.31} eb$ indicates that has a superdeformed shape. nature revealed by cranked Hartree--Fock--Bogoliubov calculations multiparticle--multihole configuration assigned