Measurement of Azimuthal Flow Velocity Using Laser-Induced Fluorescence Spectroscopy in a HYPER-I Plasma

Atsushi OKAMOTO; Shinji YOSHIMURA; Shinichiro KADO; Masayoshi Y. TANAKA

doi:10.1585/jspf.80.1003

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Measurement of Azimuthal Flow Velocity Using Laser-Induced Fluorescence Spectroscopy in a HYPER-I Plasma

Atsushi OKAMOTO, Shinji YOSHIMURA, Shinichiro KADO, Masayoshi Y. TANAKA

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Keywords: laser-induced fluorescence, Doppler shift spectroscopy, tunable dye laser, E × B drift rotation, absolute velocity measurement, directional Langmuir probe

JOURNAL FREE ACCESS

2004 Volume 80 Issue 12 Pages 1003-1004

DOI https://doi.org/10.1585/jspf.80.1003

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Abstract

A laser-induced fluorescence (LIF) spectroscopy has been applied to an electron cyclotron resonance plasma. The absolute azimuthal flow velocity has been determined by the Doppler-shifted LIF spectrum and compared with that measured with a directional Langmuir probe (DLP) and the E × B drift velocity, respectively. The velocity profiles obtained with the three different methods show good agreement. The validity of LIF spectroscopy as a tool of local and absolute flow velocity measurement has been confirmed.

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