DeuteriumHe3Reaction

By the use of accelerated ${\mathrm{He}}^3$ ions, the reaction ${\mathrm{H}}^2({\mathrm{He}}^3, p){\mathrm{He}}^4$ has been studied in the energy range 100-800 kev (${\mathrm{He}}^3$ energy). The angular distribution of the protons was found to be isotropic at bombarding energies of 200, 290, and 350 kev. The reaction cross section has a peak of 695±14 millibarns as determined with reference to the peak value 5.00 barns for the comparison reaction, ${\mathrm{H}}^3({\mathrm{H}}^2, n){\mathrm{He}}^4$. The comparison was effected by alternately bombarding the same deuterium target with tritium and ${\mathrm{He}}^3$ ions, and counting the alpha particles. The peak occurred at 640-kev ${\mathrm{He}}^3$ ion bombarding energy.