TY - JOUR
T1 - High resolution laser induced fluorescence Doppler velocimetry utilizing saturated absorption spectroscopy
AU - Aramaki, Mitsutoshi
AU - Ogiwara, Kohei
AU - Etoh, Shuzo
AU - Yoshimura, Shinji
AU - Tanaka, Masayoshi Y.
N1 - Funding Information:
This work was partially supported by the Grant-in-Aid for Scientific Research (A) Grant No. 19204057 (2007–2009), and also supported by the LHD Project Research Collaboration program at National Institute for Science Contract No. NIFS06KOAP016 (2006–2008). Author (M. A.) thanks Prof. A. Kono of Nagoya University for his encouragement.
PY - 2009
Y1 - 2009
N2 - A high resolution laser induced fluorescence (LIF) system has been developed to measure the flow velocity field of neutral particles in an electron-cyclotron-resonance argon plasma. The flow velocity has been determined by the Doppler shift of the LIF spectrum, which is proportional to the velocity distribution function. Very high accuracy in velocity determination has been achieved by installing a saturated absorption spectroscopy unit into the LIF system, where the absolute value and scale of laser wavelength are determined by using the Lamb dip and the fringes of a Fabry-Ṕrot interferometer. The minimum detectable flow velocity of a newly developed LIF system is ±2 m/s, and this performance remains unchanged in a long-time experiment. From the radial measurements of LIF spectra of argon metastable atoms, it is found that there exists an inward flow of neutral particles associated with neutral depletion.
AB - A high resolution laser induced fluorescence (LIF) system has been developed to measure the flow velocity field of neutral particles in an electron-cyclotron-resonance argon plasma. The flow velocity has been determined by the Doppler shift of the LIF spectrum, which is proportional to the velocity distribution function. Very high accuracy in velocity determination has been achieved by installing a saturated absorption spectroscopy unit into the LIF system, where the absolute value and scale of laser wavelength are determined by using the Lamb dip and the fringes of a Fabry-Ṕrot interferometer. The minimum detectable flow velocity of a newly developed LIF system is ±2 m/s, and this performance remains unchanged in a long-time experiment. From the radial measurements of LIF spectra of argon metastable atoms, it is found that there exists an inward flow of neutral particles associated with neutral depletion.
UR - https://www.scopus.com/pages/publications/66549124465
UR - https://www.scopus.com/pages/publications/66549124465#tab=citedBy
U2 - 10.1063/1.3127581
DO - 10.1063/1.3127581
M3 - Article
C2 - 19485505
AN - SCOPUS:66549124465
SN - 0034-6748
VL - 80
JO - Review of Scientific Instruments
JF - Review of Scientific Instruments
IS - 5
M1 - 053505
ER -