The ${}_{}{}^{40}{}_{}{}^{}\mathrm{Ca}$(${}_{}{}^3{}_{}{}^{}\mathrm{He}$, ${}_{}{}^8{}_{}{}^{}\mathrm{Li}$)${}_{}{}^{35}{}_{}{}^{}\mathrm{K}$ reaction at 73.7 and 75.8 MeV was employed to make the first observation of ${}_{}{}^{35}{}_{}{}^{}\mathrm{K}$ and to measure its mass. The $Q$ value for the reaction was found to be -29.693 ± 0.020 MeV and the mass excess to be -11.170 ± 0.020 MeV. Excited states of ${}_{}{}^{35}{}_{}{}^{}\mathrm{K}$ were found at 1.56 and 2.69 MeV.

NUCLEAR REACTIONS ${}_{}{}^{40}{}_{}{}^{}\mathrm{Ca}$(${}_{}{}^3{}_{}{}^{}\mathrm{He}$, ${}_{}{}^8{}_{}{}^{}\mathrm{Li}$), $E=75.8, 73.7$ MeV, measured $\sigma \left(8\mathrm{}°\right)$ $Q$ value.

• Received 8 January 1976

DOI:https://doi.org/10.1103/PhysRevC.13.1479