Two-dimensional Thomson scattering diagnostics of pulsed discharges produced at atmospheric pressure

K. Tomita, N. Bolouki, H. Shirozono, Y. Yamagata, K. Uchino, K. Takaki

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Laser Thomson scattering (LTS) method has been applied to measure two dimensional distributions of electron density (ne) and electron temperature (Te) of a pulsed discharge in Ne gas at a pressure of 400 Torr. Such a discharge was produced with good reproducibility by using a set of electrodes composed of a needle and a hemisphere with a spacing gap of 0.5 mm. The values of ne and Te at t = 25 ns after the start of the discharge and at the center of the discharge were evaluated to be 4.6 × 1022 m-3 and 1.0 eV, respectively. Based on the observed signal intensity and noise components, signal-to-noise ratios were examined and the way to apply present diagnostic system to the discharge plasma with an electron density as low as 1018 m-3 was discussed.

Original languageEnglish
Article numberC02057
JournalJournal of Instrumentation
Volume7
Issue number2
DOIs
Publication statusPublished - Feb 1 2012

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Thomson scattering
Atmospheric pressure
Carrier concentration
Diagnostics
atmospheric pressure
Scattering
Electron
Electron temperature
Discharge (fluid mechanics)
Needles
Signal to noise ratio
Hemisphere
Reproducibility
Plasmas
Electrodes
Spacing
Electrode
Lasers
Plasma
hemispheres

All Science Journal Classification (ASJC) codes

  • Mathematical Physics
  • Instrumentation

Cite this

Two-dimensional Thomson scattering diagnostics of pulsed discharges produced at atmospheric pressure. / Tomita, K.; Bolouki, N.; Shirozono, H.; Yamagata, Y.; Uchino, K.; Takaki, K.

In: Journal of Instrumentation, Vol. 7, No. 2, C02057, 01.02.2012.

Research output: Contribution to journalArticle

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AU - Takaki, K.

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