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Superdeformed band in asymmetric N $$>$$ Z nucleus, $$^{40}$$Ar and high-spin states in A = 30 $$sim$$ 40 nuclei

Ideguchi, Eiji*; Ota, Shinsuke*; Morikawa, Tsuneyasu*; Oshima, Masumi; Koizumi, Mitsuo; Toh, Yosuke  ; Kimura, Atsushi; Harada, Hideo  ; Furutaka, Kazuyoshi; Nakamura, Shoji; Kitatani, Fumito; Hatsukawa, Yuichi; Shizuma, Toshiyuki; Sugawara, Masahiko*; Watanabe, Yutaka*; Hirayama, Yoshikazu*; Oi, Makito*

A rotational band with five cascade $$gamma$$-ray transitions was newly found in $$^{40}$$Ar. The deduced transition quadrupole moment of $$1.45^{+0.49}_{-0.31}$$ eb has demonstrated this band as having a superdeformed shape of $$beta_2 sim$$ 0.5. The structure of the band was discussed in the framework of cranked Hartree-Fock-Bogoliubov calculations and the assignment of multiparticle-multihole configuration has been made.



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