Reply To: Investment risk

[vlad]

asymmetric_implosion wrote: D+3He might be an easier path than p+11B at first but you could not claim an aneutronic success. My gut feeling is something like half your yield with very large error bars would be from D+D.

well I think the exact part of D-D reactions in D-3He mix depends on device work temperature, doesn’t it?
according to your graph (cross section vs ion energy) at say 200kEv the cross section of D-D is an order of magnitude more than for D-3He

asymmetric_implosion wrote: LPP is working toward or may have recently reached a 1 J fusion yield. With something like 50 kJ stored in the capacitor bank the Q is 5E-4.

well… yes
to be exact….. this is not an absolutely “honest” calculation
According to LPP significant part of this 50kJ can be returned back to the capacitor bank.
Most part can be returned very easily (like in capacitor – inductor ring), some part – with photo-voltaic effect transformation from X-rays. (I don’t remember exact numbers though..)
So to achieve breakeven DPF device should not generate full capacitor bank energy in each pinch, it is enough if it generates a bit more than energy losses

and yes – even in this case at 1J their Q would be no more than say 1E-3

nevertheless.. I followed their work during last three years, and knowing their history and results…. after they achieve 1J I would seriously think on buying some LPP actions.
Unfortunately as far as I know it’s impossible since I’m not an American citizen or registered investor, just a private person