A Novel Laser Heterodyne Technique for the Measurement of Electron Density in Gas Discharges: Application to a TEA CO2 Laser Plasma
- 1 June 1983
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Plasma Science
- Vol. 11 (2) , 68-71
- https://doi.org/10.1109/tps.1983.4316223
Abstract
We describe a novel intracavity laser heterodyne technique for the measurement of electron density in gas discharges. The method produces time-resolved data from a single pulse and we have used it to monitor electron densities in a TEA laser discharge with a typical CO2 laser gas mixture. Good agreement was found between the measured electron density and its value calculated from current density and drift velocity. A maximum value of 5 × 1013 cm-3 was observed.Keywords
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