High-spin states of ${}^{190}\mathrm{Pt}$ have been reinvestigated using the ${}^{176}\mathrm{Yb}$(${}^{18}\mathrm{O}$, $4n$) reaction at a beam energy of 88 MeV. The previously known positive parity band associated with the $\nu$$i_{13/2}^{-2}$$\nu$$h_{9/2}^{-1}$$\nu$$j^{-1}$ ($\nu$$j$ being $\nu$$p_{3/2}$ or $\nu$$f_{5/2}$) configuration has been revised and extended significantly. A new negative parity band has been established and proposed to be based on the $\nu$$i_{13/2}^{-3}$$\nu$$j^{-1}$ configuration. Possible structure evolution of the yrast line from predominantly vibrational to rotational with increasing spin is discussed with the help of $E\gamma$ over spin curves. Additionally, calculations of total Routhian surfaces have been performed to investigate the band properties.

• Received 23 September 2013
• Revised 3 March 2014

DOI:https://doi.org/10.1103/PhysRevC.89.054303