Rarefied flow diagnostics using pulsed high-current electron beamsThe 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.
Document ID
19900051606
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Wojcik, Radoslaw M. (University of Southern California Los Angeles, CA, United States)
Schilling, John H. (University of Southern California Los Angeles, CA, United States)
Erwin, Daniel A. (Southern California, University Los Angeles, CA, United States)