so when fused it creates 4He +n and during a nuclear reaction it continues to make more +n free neutrons? am i correct on this.
which continues until all the free neutrons are taken? or destroyed?
The neutrons from this reaction are about 14.1 MeV, which is much too high to participate in any other fusion reaction. You do not need need any neutrons to produce fusion. You will need a very hot plasma of inertially or magnetically confined deuterons and tritons, or a beam of deuterons hitting a target with tritium in it to get DT fusion.
Hello Christopher-
Neutrons are needed to make fission sources go critical, but those neutrons are (almost) always thermal neutrons. The 14.1 MeV neutrons from a DT (deuterium-tritium) reaction are very difficult to thermalize. Usually, the heat from a fission reaction is needed to ignite a DT (fusion) reaction.
Bob S