Relations between the probe I-V characteristic and parameters of isotropic plasma were found by the Irving Langmuir and they can be derived most elementary for the planar probe of a large surface area S _ z ( ignoring the edge effects problem ).
2.
In " Fundamental limitations on plasma fusion systems not in thermodynamic equilibrium ", Todd Rider argues that a quasineutral isotropic plasma will lose energy due to Bremsstrahlung at a rate prohibitive for any fuel other than D-T ( or possibly D-D or D-He3 ).
3.
In most fusion plasmas, bremsstrahlung radiation is a major energy loss channel . ( See also bremsstrahlung losses in quasineutral, isotropic plasmas . ) For the p 11 B reaction, some calculations indicate that the bremsstrahlung power will be at least 1.74 times larger than the fusion power.