Abstract
This article describes the design and performance of a pulsed valve developed as a gas source for a 500-nm-long supersonic Laval nozzle with a 3-mm-wide throat. The valve consists of a plate cam and a valve seat equipped with O-rings on both the upper and lower faces. The duration of quasi-steady-state expansion is measured to be 12 ms at the nozzle throat when the pulsed valve is filled with Ar gas at 100 Torr.
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