Observation of the molecular assisted recombination in a hydrogen plasma

2004/10/20 by Akira Tonegawa, Tonegawa, Akira, Hiroyuki Yazawa +8
Physics and Astronomy · #Atomic and Molecular Physics #High-Energy Particle Collisions Research #Magnetic confinement fusion research #physics.plasm-ph

paper · pdf · doi:10.48550/arxiv.physics/0410174

12th International Congress on Plasma Physics, 25-29 October 2004, Nice (France)

arxiv created 2004/10/20 · arxiv updated 2009/12/01

Abstract

We have presented the experimental observation of the spatial structure of Molecular Assisted Recombination (MAR) including both dissociative recombination and mutual neutralization channels in the detached hydrogen plasma in the linear divertor plasma simulator, TPD-SheetIV. It is shown from the results of mass-analysis (H2+, H3+) that dissociative recombination is dominant in the center of the plasma over a range of low gas pressures. At the same time, it is observed that the mutual neutralization in MAR via H- ion formation, which is produced by dissociative electron attachment to H2(v), occurs in the periphery of the plasma where cold electrons (~1 eV) are found.

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