Optogalvanic study of excited H atoms in a dc glow discharge

May, Randy D.
May 1985
Applied Physics Letters;5/15/1985, Vol. 46 Issue 10, p938
Academic Journal
A cw dye laser operating at 6563 Ã… has been used to measure Doppler broadened absorption profiles of atomic hydrogen in a glow discharge using optogalvanic detection. In the cathode fall region, neutral hydrogen atoms were observed having kinetic energies >140 eV. In the negative glow and positive column average kinetic energies correspond more nearly to thermal velocities.


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