>For the D-He reaction that helion intends to use, they need to achieve a similar triple product at 50 keV The triple product is 16x higher for D-He3.[0] They

>For the D-He reaction that helion intends to use, they need to achieve a similar triple product at 50 keV The triple product is 16x higher for D-He3.[0] They also need to get D-D reactions going to produce the He3. The triple product for that is 30x the D-T value. (Yeah, you could run the D-D reaction at a loss or at barely-breaking-even I guess). They're talking about letting the T from the D-D reaction decay to produce more He3. Tritium has a half-life of 12 years, so in steady-state, there is about 20x the annual tritium production sitting in storage. That's a massive amount -- a 1GW D-T reactor would use something like 50kg of T in a year, so that's about 1 tonne of T. (Just getting some rough approximation.) Even if you scale it down to 50 MW, that's still 50kg. It's a major radioactive hazard. >I see no reason why a company looking for investment would hide such a result Exactly. Fusion companies tend to trumpet their successes from the rooftop. [0] https://en.wikipedia.org/wiki/Nuclear_fusion#Neutronicity,_confinement_requirement,_and_power_density https://en.wikipedia.org/wiki/Nuclear_fusion#Neutronicity,_c...