Effect of a magnetic field on the radiation emitted by a nonequilibrium hydrogen and deuterium plasma

Radiative transfer in a nonequilibrium plasma in an external electric field is considered. The system of kinetic equations determining the populations of atomic levels is written taking into account the combination of collisi on and radiative processes and is solved together with the kinetic equation for photon of various frequencies, which are emitted and absorbed in the r adiative transitions from the states of the continuous and discrete spectra . The shape of spectral lines is determined from the solution of the quantu m-mechanical problem on the emission of an atom in the electric field of th e plasma and an external magnetic field, taking the Doppler effect into con sideration. The developed approach is used in the model calculation of radi ative transfer under the conditions corresponding to the edge plasma in a t okamak, which is simulated by a homogeneous plane layer of a deuterium plas ma. It is shown that the joint action of the external magnetic field and th e electric plasma fields considerably affects the spectral and integrated c haracteristics of the radiation. (C) 2001 MAIK "Nauka / Interperiodica".