From: Eric Walker
One implication appears to be that you would see 4He traveling twice as fast in a given direction near where a reaction has taken place than you would in normal d+d plasma fusion. Let me emend that -- in d+d plasma fusion, you have the three branches: 1. d+d → 4He + ɣ (rare) 2. d+d → 3He + n (50 percent) 3. d+d → t + p (50 percent) In (1), there is a 4He, and it is not traveling very quickly. One of the better hypotheses for deuterium reactions where helium-4 only is seen as ash is Takahashi’s tetrahedral condensate http://newenergytimes.com/v2/sr/Theories/TakahashiTheory.shtml Since you have two alphas carrying away the energy - and no gammas, this theory is cleaner than many of the others. As a condensate, he avoids the 4-particle reaction … kind of…