It is proposed that certain states of undetermined spin and parity observed in previously reported ${}_{}{}^{198}{}_{}{}^{}(\mathit{p}$,p’γ) and ${}_{}{}^{194}{}_{}{}^{}$,196,198Pt(p,p’) experiments are $3^{\mathrm{-}}$ states and contain a significant amount of octupole strength. These results show that the octupole strength is fragmented in the Pt isotopes. The predictions of Engel for the distribution of octupole strength in Pt isotopes are compared to the strengths obtained from (p,p’). Furthermore, an explanation for the anomalous behavior of $3_1^{\mathrm{-}}$ states in the Pt-Hg region is proposed.

• Received 12 August 1988

DOI:https://doi.org/10.1103/PhysRevC.38.2843