Quantification of plasma enabled surface cooling by electron emission from high temperature materials
Junhwi Bak,
Albina Tropina,
James Creel
et al.
Abstract:In this work, the potential for hypersonic leading edge cooling by electron emission is demonstrated. To overcome space charge limitations the experiments are carried out in an argon discharge at 1 Torr. Cooling is observed with time-resolved measurements of the electron emission current and surface temperature, taking advantage of well controlled laser heating of the emitting surface and time accurate surface pyrometry. For the ignited mode of the plasma discharge, surface cooling by the electron emission is … Show more
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