Analysis of Molecular Activated Recombination in Detached Divertor Plasmas

Molecular activated recombination (MAR) has been received attention as one of the most important processes to realize the detached state, specifically in the linear plasma device, GAMMA10/PDX. The impact of ELMs on the MAR reaction and the resultant detached state, however, have not fully been under...

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Bibliographic Details
Published in:Plasma and Fusion Research 2019/07/11, Vol.14, pp.2403108-2403108
Main Authors: TSUBOTANI, Yuka, TATSUMI, Ryoko, HOSHINO, Kazuo, HATAYAMA, Akiyoshi
Format: Article
Language:English
Subjects:
0D model
detachment state
ELM
GAMMA10/PDX
MAR
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Summary:Molecular activated recombination (MAR) has been received attention as one of the most important processes to realize the detached state, specifically in the linear plasma device, GAMMA10/PDX. The impact of ELMs on the MAR reaction and the resultant detached state, however, have not fully been understood. We have developed a zero-dimensional model of atomic-molecular processes which takes into account MAR by separate treatment of vibrational excited states of H2 molecules, and the high energy tail of the electron energy distribution function (EEDF) during the ELM heat pulse. The results show that the rate of MAR increases during ELMs due to an increase in excited molecules.
ISSN:1880-6821
1880-6821
DOI:10.1585/pfr.14.2403108