Confinement of Fusion-Produced Tritium in the Princeton Large Torus

Tritium is produced in deuterium discharges in the Princeton Large Torus by the reaction D($d$,$p$)T. These tritons undergo reactions D($t$,$n$)${}_{}{}^4{}_{}{}^{}\mathrm{He}$ creating 14-MeV neutrons which have been detected by two independent techniques at a level of 1% of the 2.5-MeV neutrons from the reaction D($d$,$n$)${}_{}{}^3{}_{}{}^{}\mathrm{He}$. The magnitude of the 14-MeV neutron emission is consistent with finite banana width, neoclassical predictions for the confinement of the energetic tritons.