Impurity Radiation from Medium Density Plasmas

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Abstract
Impurity radiation from plasmas of densities typical of tokamaks and mirrors is examined for a variety of impurity species over a wide temperature range. Calculations indicate that radiative losses are enhanced during the early phase of the stripping process and that the radiation is much greater at temperatures characteristic of many-electron atoms than had been generally recognized by the plasma physics community. These results are useful in the analysis of the energy balance in tokamaks and give important constraints on the choice of wall materials.

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