Plasma and Fusion Research
Volume 13, 1201099 (2018)
Rapid Communications
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
- 1)
- Institute of Materials and Systems for Sustainability, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
- 2)
- DIFFER, Dutch Institute for Fundamental Energy Research, Eindhoven, The Netherlands
Abstract
We have performed laser Thomson scattering (LTS) measurements during the transition between attached and detached helium plasmas in the linear divertor simulator NAGDIS-II. In the detached plasma, the LTS spectrum shows a discrepancy with a single Gaussian function. The discrepancy is resolved by the spectrum fitting with a sum of two Gaussian functions, indicating that the electron energy distribution contains two different temperature components.
Keywords
electron energy distribution, detached plasma, plasma diagnostic, Thomson scattering, NAGDIS-II
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