#6342
QuantumDot
Participant

In an article published in 2004[8], S. Son and N.J. Fisch identified a possible iginition regime for p-11B and D-3He, in which ρ > 105 g/cm, Ti =~ 200 keV and Te =~ 30 keV; for p-11B, the optimized fuel concentration overcoming the Bremsstrahlung losses would be nB/np = 0.3[9].

Hydrogen-boron fusion requires ion energies or temperatures almost ten times higher than those for D-T fusion. For given densities, the reaction rate for hydrogen boron achieves its peak rate at around 600 keV (6.6 billion degrees C) while D-T has a peak at around 66 keV (730 million degrees C). In addition, the peak reaction rate of p-11B is only one third that for D-T.

http://z-fusion.net/spip/spip.php?article61

So depending on the density it look like they could already do D-T fusion, but for p-11B you want about triple the average Ti temperature.