Application of the collisional-radiative, atomic-molecular model to the recombining divertor plasma (original) (raw)
Recombination of hydrogen plasma in the divertor volume can be considered as a simple explanation of divertor plasma detachment phenomena experimentally observed on many tokamaks. As will be shown in this report, the presence of rotationally and vibrationally excited molecules significantly enhance the conventional three-body recombination of plasma and expand the plasma temperature and density range responsible for plasma recombination to much higher temperatures and/or lower densities. The effective rate coefficient for plasma recombination due to chemical reactions with molecules, calculated on the basis of generalized collisional-radiative model (CRAMD code), was found be about 10-10 cm 3 /s in the wide range of plasma temperatures T, = 1-3 eV and densities
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