Abstract
A new versatile method for opto-galvanic spectroscopy is described. The method is based on sensitive detection of impedance changes in dilute plasma without the necessity for a self-sustaining discharge. A one-dimensional model for the effect in a high-pressure electron beam pumped gas is developed and tested. Test spectra for the Balmer-α transition in hydrogen, produced by resonant dissociation of excited hydrogen molecules in high pressure Ne, demonstrate the high resolution and sensitivity achievable for potential spectroscopic and chemical kinetics applications.
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