The page on aneutronic fusion also mentions the low cross section of p+Li7 but, even though I check it from time to time for the list of fusion reactions, it’s been a while since I read it all the way through. Okay, boron it is, then.
However, I did look up lithium and its compounds. If lithium-7 were to be introduced into a DPF device the way LPP intends to introduce decaborane, lithium hydride (LiH) would be the obvious choice. However, it has a very high melting point and it reacts explosively with water. Sounds like decaborane is a better choice. And, if you don’t mind mixing reactions, there’s also lithium borohydride. Of course, if p+B11 has a better cross section, there’s no point in doing that.
