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Impurity, radiation, and plasma spectroscopy in divertor/SOL plasmas

Kubo, Hirotaka

Explanation about impurity, radiation, and plasma spectroscopy in divertor/SOL plasmas is presented as an article of an introductory encyclopedia on atomic power, quantum and nuclear fusion. Impurity control using divertor/SOL plasmas is essential to improve performance of fusion plasmas and prevent erosion of plasma facing components. Spatial distribution, ionization, excitation, and radiation of impurity in divertor/SOL plasmas is determined by their production, transport, and atomic processes. Here, we describe radiation loss coefficients as a brief explanation of the radiation processes and impurity flux measurement as a simple example of the plasma spectroscopy.

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