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Volume ultraviolet preionization from bare sparks

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3 Author(s)
Babcock, R. ; Westinghouse Research Laboratories, Pittsburg, PA, USA ; Liberman, I. ; Partlow, W.

Volumetric photoionization in CO2-laser gas mixtures by UV emission from bare sparks was studied in two ways: by spectroscopic emission and absorption measurements, and by direct collection of photoionized electrons. The physical processes were understood sufficiently to permit prediction of initial electron distributions in arbitrary geometries of CO2, N2, He gas mixtures containing known concentrations of ionizable impurity.

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Quantum Electronics, IEEE Journal of  (Volume:12 ,  Issue: 1 )