At school I have learned that there are two very similar fusion reactions, which physicists (and science fiction authors) hope can be used as an energy source:
$$^2_1\mathrm{H}+^3_1\mathrm{H} \rightarrow ^4_2\mathrm{He}+^1_0\mathrm{n} + (17.589\,\mathrm{MeV})$$
and
$$^2_1\mathrm{H}+^3_2\mathrm{He} \rightarrow ^4_2\mathrm{He}+^1_0\mathrm{p} + (18.353\,\mathrm{MeV})$$
Does the fact that the reaction which requires helium-3 produce protons instead of neutron, imply that entirely different fusion reactors would need to be build, to make the different fusions reactions happen, or would a facility built to fuse tritium with deuterium work perfectly fine if you instead gave it helium-3 and deuterium?