Use of the Four-Neutron Transfer ReactionO18(O18,O14)O22to Determine the Mass ofO22

Abstract

Counter-telescope and recoil-coincidence techniques were used to observe the reaction ${}_{}{}^{18}{}_{}{}^{}\mathrm{O}$(${}_{}{}^{18}{}_{}{}^{}\mathrm{O}$, ${}_{}{}^{14}{}_{}{}^{}\mathrm{O}$)${}_{}{}^{22}{}_{}{}^{}\mathrm{O}$ at 100 MeV. These data indicate a mass excess for ${}_{}{}^{22}{}_{}{}^{}\mathrm{O}$ of 9.48±0.10 MeV, which differs by ∼2.0 MeV from the previous value, but is in excellent agreement with several theoretical predictions.