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Report No.

Beta decay of the axially asymmetric ground state of $$^{192}$$Re

Watanabe, Hiroshi*; Watanabe, Yutaka*; Hirayama, Yoshikazu*; Andreyev, A. N.; Hashimoto, Takashi*; Kondev, F. G.*; Lane, G. J.*; Litvinov, Yu. A.*; Liu, J. J.*; Miyatake, Hiroari*; Moon, J. Y.*; Morales, A. I.*; Mukai, Momo*; Nishimura, Shunji*; Niwase, Toshitaka*; Rosenbusch, M.*; Schury, P.*; Shi, Y.*; Wada, Michiharu*; Walker, P. M.*

The $$beta$$ decay of $$^{192}_{75}$$Re$$_{117}$$, which lies near the boundary between the regions of predicted prolate and oblate deformations, has been investigated using the KEK Isotope Separation System (KISS) in RIKEN Nishina Center. The ground state of $$^{192}$$Re has been assigned $$J^{pi}$$ = $$(0^{-})$$ based on the observed $$beta$$ feedings and deduced log$$ft$$ values towards the $$0^{+}$$ and $$2^{+}$$ states in $$^{192}$$Os, which is known as a typical $$gamma$$-soft nucleus. The shape transition from axial symmetry to axial asymmetry in the Re isotopes is discussed from the viewpoint of single-particle structure using the nuclear Skyrme-Hartree-Fock model.



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Category:Astronomy & Astrophysics



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