Thomson Scattering Measurements of Helium Recombining Plasmas in the Divertor Simulator MAP-II

Filippo SCOTTI; Shinichiro KADO; Atsushi OKAMOTO; Taiichi SHIKAMA; Satoru TANAKA

doi:10.1585/pfr.1.054

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Thomson Scattering Measurements of Helium Recombining Plasmas in the Divertor Simulator MAP-II

Filippo SCOTTI, Shinichiro KADO, Atsushi OKAMOTO, Taiichi SHIKAMA, Satoru TANAKA

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Keywords: Thomson scattering, divertor, detached plasma, recombining plasma, electron ion recombination (EIR) processes

JOURNAL FREE ACCESS

2006 Volume 1 Pages 054

DOI https://doi.org/10.1585/pfr.1.054

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Abstract

Laser Thomson Scattering (LTS) measurements of Electron Ion Recombining (EIR) Helium plasma were performed in the divertor/edge simulator MAP-II. Upgrades of our LTS system, in the stray-light level and in the notch filter, allowed the measurement of electron temperatures as low as 0.1 eV and further investigation of EIR processes. Electron temperature and electron density profiles of EIR He recombining plasmas with different background neutral pressures have been measured.

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