References(16) A method for calculating spectral radiances of plasmas produced at high current densities has been proposed. Ionization degrees of the present plasmas at medium or high pressures are so high that LTE states are held. An absorption coefficient of a plasma emitting atomic and ionic lines, and continuum has been expressed with the Gaunt factor being effective from VUV to FIR. The spectral radiance has been calculated with the total absorption coefficient as a function of the temperature, with the use of a filling pressure of an emissive species into lamps as a parameter. Numerical calculation has been done for Xe-filled radiation sources operated at high current densities. Part of the results have been compared with experimental data by other authors. As a result, the proposed method is considered to be available to search for new radiation sources emitting strong atomic and ionic lines as well as intense continua.
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