High-spin spectroscopy of ${}^{144}\mathrm{Tb:}$ Systematic investigation of dipole bands in $N=79$ isotones

High-spin spectroscopy of $^{144} Tb:$ Systematic investigation of dipole bands in $N = 79$ isotones

Y. Y. Cheng et al.

Phys. Rev. C 89, 054309 – Published 8 May 2014; Erratum Phys. Rev. C 108, 029901 (2023)

Abstract

The high-spin spectroscopy of $^{144} Tb$ has been studied via $^{116}$ Sn( $^{32} S$ , $3 n 1 p$ ) $^{144} Tb$ fusion-evaporation reaction at a beam energy of 156 MeV. A dipole band built on the $π h_{11 / 2}^{3} \otimes ν h_{11 / 2}^{- 1}$ configuration is newly observed in $^{144} Tb$ . Together with similar observation in neighboring nuclei, the properties of dipole bands in $N = 79$ isotones are investigated in terms of the self-consistent tilted-axis-cranking covariant density functional theory. Based on systematic comparison and examination of the shears mechanism, the dipole band in $^{144} Tb$ can be interpreted as a magnetic rotational band.