Effect of High-Energy Electrons Component on Recombination Plasma with Pulse Plasma Flow

Takaaki IIJIMA; Hiroaki KOBAYASHI; Suguru TANAKA; Akira TONEGAWA; Kazutaka KAWAMURA; Kohnosuke SATO

doi:10.1585/pfr.9.2405010

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Effect of High-Energy Electrons Component on Recombination Plasma with Pulse Plasma Flow

Takaaki IIJIMA, Hiroaki KOBAYASHI, Suguru TANAKA, Akira TONEGAWA, Kazutaka KAWAMURA, Kohnosuke SATO

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Keywords: ELM burst, divertor plasma, recombination plasma, collisional-radiative model

JOURNAL FREE ACCESS

2014 Volume 9 Pages 2405010

DOI https://doi.org/10.1585/pfr.9.2405010

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Abstract

Experiments on a recombination plasma with pulse plasma flow have been performed in the linear divertor simulator TPD-SheetIV. The pulse plasma flow was generated using a switching circuit controlled by the electric potential of the adjacent floating electrode in the plasma source. The duration of the pulse was 0.3 ms at a frequency of 50 Hz. The time dependence of the electron density n_e, temperature T_e, and energy distribution function f_e(E) were measured using a Langmuir probe. The ionization and recombination events are analyzed using the Collisional-Radiative model, taking into account high-energy electrons.

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