The effect of magnetic field on electron collisions and the electro-conductivity of plasma

A general kinetic equation for fully ionized plasma is derived from the Bogoliubov equation, taking account of the influence of magnetic field on the collision term. Using this kinetic equation, the electro-conductivity along the magnetic field is calculated with electron density ranging from 1012 to 1014 cm-3, temperature of plasma 105 K to 107 K and magnetic field up to 9 x 105 gauss. It is found that the conductivity increases slowly with increase of magnetic field. The increment is about 22.3% for a plasma with a electron density of 1012 cm-3 and a temperature of 106 K in a magnetic field of 9 x 104 gauss. Hence, one may conclude that the effect of magnetic field on the collision term in the kinetic equation is not very important, but it could not be neglected in a precise calculation