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Plasma-Neutral Interaction in Kinetic Models for the Divertor Region

✍ Scribed by F. Taccogna; R. Schneider; K. Matyash; S. Longo; M. Capitelli; D. Tshakaya

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
169 KB
Volume
48
Category
Article
ISSN
0005-8025

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✦ Synopsis

Abstract

The coupled dynamics and kinetics between gas and plasma in the sheath region in the divertor is studied by means of a one‐dimensional Particle in Cell‐Direct Simulation Monte Carlo (PIC‐DSMC) model. In particular, the electron‐induced vibrational excitation/relaxation of H2 molecules and particle‐surface interaction (vibrational relaxation, atom recombination, ion neutralization, direct negative ion production) have been considered in detail in view to estimate the importance of plasma volumetric recombination by molecular assisted reactions (MAR) and the possible electron heating near the wall. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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