Abstract
Edge plasma physics and atomic-molecular processes relating to plasma heat flow to material surfaces are discussed. The local heat flow was found to be enhanced by a thermal contraction induced by cross-field potential variation in a plasma, resulting in hot spot formation on the plasma-facing materials due to nonlinear thermal bifurcation induced by thermoelectron emission. Also examined is the recombination enhancement due to the vibrationally excited hydrogen molecule generated from material surfaces in detached plasma with molecular activated recombination.
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