Influence of discharge conditions on energetic hydrogen atoms in a glow discharge

Journal Article · Sat Oct 01 00:00:00 EDT 2011 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3646499· OSTI ID:22038726

Cvetanovic, N ^[1]; Obradovic, B M; Kuraica, M M ^[2]

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1. Faculty of Transport and Traffic Engineering, University of Belgrade, Vojvode Stepe 305, Belgrade 11000 (Serbia)
2. Faculty of Physics, University of Belgrade, P. O. Box 368, Belgrade 11001 (Serbia)

Influence of discharge conditions on fast hydrogen atoms in glow discharge is investigated using Balmer alpha emission spectroscopy. Investigation was performed in two orthogonal directions of observation in pure hydrogen. The shapes of the profiles are examined together with the space intensity distribution of the excessively broadened Balmer alpha line. It was found that line profile, space intensity distribution, and energy distribution of exited atoms strongly depend on voltage, pressure, and the reduced electric field. This confirms that fast H atoms are generated in charge exchange processes and neutralization of ions at cathode surface and not in a non-field process.

• OSTI ID: 22038726
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 7 Vol. 110; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
BALMER LINES
CHARGE EXCHANGE
ELECTRIC FIELDS
ELECTRIC POTENTIAL
EMISSION SPECTROSCOPY
ENERGY SPECTRA
GLOW DISCHARGES
HYDROGEN
IONS
LINE BROADENING
PLASMA
PLASMA DIAGNOSTICS
SURFACES