Xenon microdischarge at 300-800 torr: Laser spectroscopy of Xe2 a3u+ (1u, 0u-)

Clark J. Wagner, J. Gary Eden

Research output: Contribution to journalArticlepeer-review


Spatially uniform microdischarges in Xe at pressures of 300-800 torr have been produced in a 90-μm gap between 1.5-mm-diameter tungsten rods (plasma volume of ∼160 μL), and applied to the laser spectroscopy of the Xe2 excimer. Calculations and spectral simulations indicate that the gas temperature in the plasma reaches 900 K for a steady-state current density of 0.23 A-cm-2. Laser-induced, fluorescence suppression spectroscopy in the afterglow of the crow-barred discharge reveals well-developed vibrational bands in the 680-800-nm region tentatively attributed to 5 (1g) ← a3u+ (1u, 0u-) transitions of Xe2.

Original languageEnglish (US)
Pages (from-to)568-569
Number of pages2
JournalIEEE Transactions on Plasma Science
Issue number2 I
StatePublished - Apr 2005


  • Laser spectroscopy
  • Microdischarge
  • Molecular spectroscopy

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Condensed Matter Physics


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