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Electric field measurements in discharges by 2+1 photon laser Stark spectroscopy of atomic hydrogen

Appl. Phys. Lett. 65, 819 (1994); doi:10.1063/1.112241

Issue Date: 15 August 1994

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J. P. Booth, M. Fadlallah, J. Derouard, and N. Sadeghi
Laboratoire de Spectrométrie Physique,a) Université Joseph Fourier de Grenoble, B.P. 87, 38402 St. Martin d'Hères Cédéx, France
We have developed a new method for measuring electric field magnitude using 2+1 photon laser-induced fluorescence of ground-state hydrogen atoms. The atoms are excited to the n=2 level by two 243-nm photons, then further excited to the n=6 level by one photon at 410 nm and detected by cascaded Halpha fluorescence. The electric field magnitude is deduced from the Stark splitting of the n=6 level. The method was calibrated using H atoms from a distant source flowing through a region of known electric field. Results are presented for field profiles in dc discharges in 0.3 and 1 Torr pure H2. Applied Physics Letters is copyrighted by The American Institute of Physics.
History: Received 3 February 1994; accepted 5 June 1994
Permalink: http://link.aip.org/link/?APPLAB/65/819/1
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KEYWORDS and PACS

Keywords
PACS
  • 52.70.Kz
    The physics of plasmas and electric discharges Plasma diagnostic techniques and instrumentation Optical (ultraviolet, visible, infrared) measurements
  • 52.80.Hc
    The physics of plasmas and electric discharges Electric discharges Glow; corona
  • 07.50.+f
    Specific instrumentation and techniques of general use in physics Electrical instruments and techniques
  • YEAR: 1994

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ISSN:
0003-6951 (print)   1077-3118 (online)
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