On line-ratio analysis for helium-argon microwave discharges

Journal Article · Tue Feb 15 04:00:00 EST 2005 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.1841467· OSTI ID:20668188

Koleva, I; Shivarova, A; Makasheva, K; Schlueter, H ^[1]

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1. Faculty of Physics, Sofia University, 5, James Bourchier Boulevard, 1164 Sofia (Bulgaria)

Regarding spectroscopy diagnostics via line-intensity ratio of high-density diffusion-controlled discharges in helium-argon gas mixtures, the study presents a collisional-radiative model of the discharge. In order to show variations of excited-state population densities and line-intensity ratios related to changes of plasma density and electron temperature, the model is applied to surface-wave-sustained discharges, since the axial structure of these discharges displays self-consistent variations of the discharge characteristics. The comparison with the corona model shows the necessity of developing a collisional-radiative model. Possibilities for simultaneous determination - based on the collisional-radiative model - of electron temperature and plasma density from measurements of line-intensity ratios are outlined.

• OSTI ID: 20668188
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 4 Vol. 97; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ARGON
ELECTRON TEMPERATURE
EXCITED STATES
HELIUM
HIGH-FREQUENCY DISCHARGES
MIXTURES
PLASMA
PLASMA DENSITY
PLASMA DIAGNOSTICS
PLASMA SIMULATION
SPECTROSCOPY
SURFACES
VARIATIONS