Key points are not available for this paper at this time.
The plasma energy confinement time required to achieve a practically useful power amplification factor Q₄ can be reduced substantially if the plasma is heated by an energetic ion beam that reacts with the bulk ions as it thermalizes. The contribution to Q₄ arising from the beam-plasma fusion reactions can be maximized by maintaining the post-injection energy of the beam ions near an optimum value, for example, by means of slow magnetic compression.
Furth et al. (1974) studied this question.