Abstract

A source for the continous production of neutral metastable atoms is described. A hollow cathode discharge tube was used to produce densities of 3.5 ×10¹³ cm⁻³ and column densities of 1.6 ×10¹⁵ cm⁻² in the 4s^{2 2}D metastable term of neutral copper. The accuracy of these density determinations (±30 to ±66%) is limited by the oscillator strengths required for the analysis. The usefulness of the source was demonstrated by measurements of relative oscillator strengths of some Cu _I lines in the 2200-Å wavelength region. These data are compared with those obtained by other methods.

© 1979 Optical Society of America

Opto-galvanic spectroscopy in a uranium hollow cathode discharge

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