Another snippet of information concerning Tri Alpha's FRC.
Apparently they have gotten the temperature up to ~ 1KeV. This may be almost 10 times higher than previous temperatures I was aware of. Still a ways to go but definatly an improvement. The reported confinement time of the plasma of ~ 10 milliseconds also sounds encouraging. Of course this needs to be compared to the target density- the triple product considerations. If they are doing this at some relatively low density it means less than if they are operating near relatively high densities.
The mention of needed temperatures 300 times higher (~ 3 GeV) certainly may apply to P-B11 fusion. Lower temperatures would be needed for D-T, D-D or even D-He3 reactions.http://phys.org/news/2015-08-tri-alpha- ... rtant.html
In a linked article from this site, additional perspective on the energies of the P-B11 alpha energy distribution, there are two higher energy alphas and one lower energy alphas, instead of the inverse. This has been hinted at before, but this may be more definitive. The total KE is still ~ 8.9 MeV but the direct conversion of only one energy level (such as with a single energy capture electrode at the higher alpha energy ) or via a hetrodyne process (?). With multiple staged electrode energy capture this would seem to be less important- eg- using 10 electrodes at lower voltages- aka the picket fence or venation blind arrangement of sub voltage electrodes.
This may have some significance on ignition machines, but not on Polywells or FRC(?). Is the Tri Alpha approach an ignition machine? It would result in a modest longer time for the bulk of the alphas to thermalize with the fuel plasma.http://phys.org/news/2011-04-overturned ... -news.html
To error is human... and I'm very human.