Eur. Phys. J. Appl. Phys.
Volume 28, Number 3, December 2004
|Page(s)||325 - 330|
|Section||Plasma, Discharges and Processes|
|Published online||23 November 2004|
Self-absorbing method to measure the population of the metastable levels in an argon microwave plasma at atmospheric pressure*
Grupo de Espectroscopía de Plasmas, Edificio A. Einstein (C-2), Campus de Rabanales, Universidad de Córdoba, 14071 Córdoba, Spain
2 Institute of Physics, Technical University, 8 St. Kliment Ohridski Blvd. BG.-1797 Sofía, Bulgaria
3 Dpto. de Física Aplicada, Campus de Rabanales, Universidad de Córdoba, 14071 Córdoba, Spain
Corresponding author: email@example.com
Revised: 2 June 2004
Accepted: 4 August 2004
Published online: 23 November 2004
Metastable atoms play an important role in the kinetics of plasmas. A self-absorbing method has been used to determine the population density of Ar(3P0) and Ar(3P2) atomic metastable levels and Ar(1P1) and Ar(3P1) atomic resonant levels in an argon microwave discharge sustained by a surface wave at atmospheric pressure. Under the operative conditions investigated, the concentrations of these levels ranged from 1010−1012 cm−3, being in agreement with those reported in the literature, which seems to indicate that this method could be used for this calculation.
PACS: 52.25.Kn – Thermodynamics of plasmas / 52.70.Kz – Optical (ultraviolet, visible, infrared) measurements / 52.80.Pi – High-frequency and RF discharges
© EDP Sciences, 2004
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