Optical emission spectroscopy of plasma formation in a xenon theta pinch

W. Meeks, R. Pahl, J. Rovey

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Analyses of xenon spectral emission data in the IR range primarily from Xe I transitions and estimations of electron temperature are performed on a theta pinch test article. Estimations are based on a collisional-radiative model originally written for Hall-effect thrusters by Karabadzhak et al. which takes into account metastable species in the 1s excited state of xenon. Tests performed on a pulsed xenon plasma at an energy of 80 joules, neutral back-fill pressures of 10-2 to 10-1 Torr, and discharge frequency of 460 kHz yield electron temperatures of 6.5 to 11.3 eV for cumulative spectra in the first 20 μs. Spectra acquired in the UV range verify the presence of 2nd order diffraction from Xe II transitions. Low single-to-noise ratios for optical gate widths of 250 nanoseconds produce substantial fluctuation in intensities and thus estimation errors, while not quantified here, are assumed high.

Original languageEnglish (US)
Title of host publication2013 19th IEEE Pulsed Power Conference, PPC 2013
DOIs
StatePublished - Dec 4 2013
Externally publishedYes
Event2013 19th IEEE Pulsed Power Conference, PPC 2013 - San Francisco, CA, United States
Duration: Jun 16 2013Jun 21 2013

Publication series

NameDigest of Technical Papers-IEEE International Pulsed Power Conference

Other

Other2013 19th IEEE Pulsed Power Conference, PPC 2013
Country/TerritoryUnited States
CitySan Francisco, CA
Period6/16/136/21/13

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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