We have investigated the reactions ${}_{}{}^{194,196,198}{}_{}{}^{}\mathrm{Pt}$($\overrightarrow{t}$, $\alpha$)${}_{}{}^{193,195,197}{}_{}{}^{}\mathrm{Ir}$ and ${}_{}{}^{191,193}{}_{}{}^{}\mathrm{Ir}$($t$,$p$)${}_{}{}^{193,195}{}_{}{}^{}\mathrm{Ir}$. While the ${}_{}{}^{193}{}_{}{}^{}\mathrm{Ir}$ single-particle level structure and two-neutron transfer strengths are not inconsistent with the predictions of the dynamical supersymmetry proposed in this region, ${}_{}{}^{195,197}{}_{}{}^{}\mathrm{Ir}$ show no evidence for the supersymmetry structure.

• Received 25 February 1981

DOI:https://doi.org/10.1103/PhysRevLett.46.1264