Title :
Xenon microdischarge at 300-800 torr: laser spectroscopy of Xe2 a3Σu+(1u,0u-)
Author :
Wagner, Clark J. ; Eden, J. Gary
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Illinois, Urbana, IL, USA
fDate :
4/1/2005 12:00:00 AM
Abstract :
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)←a3Σu+(1u,0u-) transitions of Xe2.
Keywords :
afterglows; discharges (electric); plasma diagnostics; plasma light propagation; plasma pressure; plasma simulation; plasma temperature; xenon; 1.5 mm; 300 to 800 torr; 680 to 800 nm; 900 K; Xe; Xe2 excimer; Xe2 transitions; crow-barred discharge afterglow; fluorescence suppression spectroscopy; laser spectroscopy; plasma gas temperature; plasma volume; spatially uniform microdischarges; spectral simulations; steady-state current density; tungsten rods; vibrational bands; xenon microdischarge; Current density; Fluorescence; Gas lasers; Plasma density; Plasma simulation; Plasma temperature; Spectroscopy; Steady-state; Tungsten; Xenon; Laser spectroscopy; microdischarge; molecular spectroscopy;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2005.845287
