asymmetric_implosion wrote:
asymmetric_implosion: The 500kV pinch voltage does not relate to the energy of the x-rays. The x-ray energy peak from bremsstrahlung is a function of electron temperature (http://en.wikipedia.org/wiki/File:Bremsstrahlung_power2.svg ). If the electrons are at ~150keV then the bremsstrahlung peak will be around a quarter of this – so around 30-40keV.
Brems in the plasma might agree with a thermal spectrum if the electrons remain confined in the plasmoid but brems from the electron beam will not obey a thermal spectrum. The run away electron beam that impacts the anode is much higher energy.
Per Lerner-haklase: In an all-up FF pB11 device the electron beam doesn’t make it out of the plasmoid. Instead the electron beam contributes to further heating of the plasmoid and thus an increased fusion rate.