Abstract
Line shapes of deuterium provide an important insight on the conditions of the edge plasmas of Tokamak. An analysis of line profiles of D alpha reveals the existence of several populations with different temperatures. Our modeling of such profiles includes the description of the interaction between these populations with the help of a Fokker-Planck equation. For disruptive plasmas, the line shape of D delta is shown to be broadened by Stark, Zeeman and Doppler effect, allowing an electronic density diagnostic.