Signature splitting in $^{173}$W with triaxial particle rotor model

Details Signature splitting in $^{173}$W with triaxial particle rotor model Signature splitting in $^{173}$W with triaxial particle rotor model

2008-06-15

arxiv.org/abs/0806.2407v1

Physics

Nuclear Physics

Nuclear Theory

18 pages, 5 figures

Scientific paper

10.1142/S0218301309012094

A particle rotor model with a quasi-neutron coupled with a triaxially deformed rotor is applied to study signature splitting for bands with intruder orbital $\nu7/2^{+} [633]$ and non-intruder orbital $\nu5/2^{-}[512]$ in $^{173}$W. Excellent agreement with the observed energy spectra has been achieved for both bands. Signature splitting for band $\nu7/2^{+} [633]$, and band $\nu5/2^{-}[512]$ before the onset of signature inversion, is satisfactorily reproduced by introducing the $\gamma$ degree of freedom. The phase and amplitude of signature splitting in band $\nu5/2^{-}[512]$ is attributed to strong competition between $2f_{7/2}$ and $1h_{9/2}$ components. However, the explanation of signature inversion in band $\nu5/2^{-}[512]$ self-consistently is beyond the present one quasi-neutron coupled with a triaxially deformed rotor.

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