Helion
Helion hasn&#x27;t published the triple product results for their latest Trenta reactor, but for the previous Venti they achieved a triple product of ~10^19 keV.s&#x2F;m^3 at an ion temperature of 2 keV. The Trenta reactor has achieved an ion temperature of 9 keV. For D-T fusion, you need a triple product of about 3x10^21 kev.s&#x2F;m^3 at 10 keV. For the D-He reaction that helion intends to use, they need to achieve a similar triple product at 50 keV. So it looks like they&#x27;re still 2-3 orders of magnitude off from where they need to be to achieve ignition. Their neutron production rate is comparable to industrial fusors at ~10^11 n&#x2F;s, which while useful as neutron sources are nowhere near producing net power. Compare this with tokamaks that have achieved a triple product around 1.5x10^21 keV.s&#x2F;m^3, or about half of what they need to achieve ignition.<p>While it&#x27;s possible that helion has made improvements to ion density and confinement allowing them to achieve a significantly higher triple product and close the gap to power production, I see no reason why a company looking for investment would hide such a result, especially while putting out press releases celebrating other milestones. I doubt they&#x27;re anywhere near the point where an economical plant could even be considered, though I&#x27;d love to be proven wrong.