Emission-line profile measurements in transient plasmas, using a scanning Fabry-P rot interferometer

Publisher Website
Google Scholar
Abstract
A scanning Fabry-Pérot interferometer has been used to record the profiles of hydrogen and helium lines emitted by the plasma produced in a critically damped Z pinch. Individual line profiles were recorded in less than one microsecond while many profiles of the same line were recorded in successive time intervals during the course of a single discharge. Broadening of the lines was caused mainly by plasma microfields and so interpretation according to Stark broadening theory has led directly to the electron density. Results obtained with the Fabry-Pérot interferometer have been compared with those obtained with other diagnostic techniques over the range 1014 ne 17 cm-3.