The ${}_{}{}^{26}{}_{}{}^{}\mathrm{Mg}(\alpha ,{}_{}{}^8{}_{}{}^{}\mathrm{He}){}_{}{}^{22}{}_{}{}^{}\mathrm{Mg}$ reaction was reinvestigated at a bombarding energy of 110.6 MeV with a magnetic spectrometer-multiwire proportional counter detection system, leading to an improved value for the mass excess of ${}_{}{}^8{}_{}{}^{}\mathrm{He}$ of 31.57±0.03 MeV.

NUCLEAR REACTIONS ${}_{}{}^{26}{}_{}{}^{}\mathrm{Mg}(\alpha ,{}_{}{}^8{}_{}{}^{}\mathrm{He})$, $E=110.6\mathrm{}$ MeV; ${}_{}{}^8{}_{}{}^{}\mathrm{He}$ measured mass excess; compared mass predictions.

• Received 16 September 1974

DOI:https://doi.org/10.1103/PhysRevC.10.2654