Supersonic gas shell for puff pinch experiments

摘要

An easyhyphen;tohyphen;fabricate, conical, annular supersonic nozzle has been developed for use in highhyphen;power, puff gaszhyphen;pinch experiments. A fast responding conical pressure probe has also been developed as an accurate supersonic gas flow diagnostic for evaluating the transient gas jet formed by the nozzle. Density profile measurements show that the magnitude and radial position of the gas annulus are fairly constant with distance from the nozzle, but the gas density in the center of the annulus increases with distance from the nozzle.