Abstract

A dc magnetron discharge in a cylindrical diode with an incandescent cathode, filled with argon at low pressure, was studied by spectroscopic methods. Operating conditions were anode voltage U_a = 0–150 V, magnetic field B = 0–1.2 × 10⁻¹ T, and pressure p = 10⁻³–10 Pa. It was found that the spectrum consists of ArII, ArIII, and ArIV ion spectral lines. Neutral argon spectral lines (ArI) were not recorded.

© 1983 Optical Society of America

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