NASA NTRS · 19900051606
Rarefied flow diagnostics using pulsed high-current electron beams
Abstract
The use of high-current short-pulse electron beams in low-density gas flow diagnostics is introduced. Efficient beam propagation is demonstrated for pressure up to 300 microns. The beams, generated by low-pressure pseudospark discharges in helium, provide extremely high fluorescence levels, allowing time-resolved visualization in high-background environments. The fluorescence signal frequency is species-dependent, allowing instantaneous visualization of mixing flowfields.
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Wojcik, Radoslaw M., Schilling, John H., Erwin, Daniel A.. 1990-06-01. Rarefied flow diagnostics using pulsed high-current electron beams. https://ntrs.nasa.gov/citations/19900051606
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