Note that many of the reactions form chains. For instance, a reactor fueled with 1 T and 2 He creates some 1 D, which is then possible to use in the 1 D – 2 He reaction if the energies are "right". An elegant idea is to combine the reactions (8) and (9). The 2 He from reaction (8) can react with 3 Li in reaction (9) before completely thermalizing. This produces an energetic proton, which in turn undergoes reaction (8) before thermalizing. Detailed analysis shows that this idea would not work well, but it is a good example of a case where the usual assumption of a Maxwellian plasma is not appropriate.