The line emission of carbon and lithium beams in the plasma edge of TEXTOR

The laser blow-off method (LBO) is a useful tool for the analysis of parameters in the boundary layer of a tokamak plasma, particularly in the determination of the electron temperature and density distribution. The interpretation of the experimental data obtained by LBO from neutral carbon and lithium beams, which are commonly used in these cases, requires corresponding collisional radiative models for description of the level populations within these atoms. Such models for the spectral lines observed in TEXTOR are formulated. The number of atomic levels necessary for calculation of the line intensities is discussed. (author)