Abstract

A Penning discharge was investigated photoelectrically as a light source from 100 Å to 300 Å. The source showed reasonable stability—10% over an hour’s operation. Bright spectral lines observed were a mixture of lines from the filling gas (Ne) and from sputtered cathode material (Al). The discharge was found to be an intense line source; an estimate of the brightness of the 160 Å Al iv lines shows them to be comparable with the highly ionized metal lines appearing in a pulsed tokamak discharge. Satellites of the Al iv resonance lines at 160 Å appear clearly in the spectra.

© 1977 Optical Society of America

Continuous discharge Penning source with emission lines between 50 Å and 300 Å

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Radiometric characterization of a Penning discharge in the vacuum ultraviolet

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Two Light Sources for Use in the Extreme Ultraviolet

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