Abstract
The electrical and optical characteristics of a confined (cage) discharge in a He-Cl2 mixture at pressures within 0.1–1.5 kPa were studied. It was established that the negative glow plasma in this discharge is a source of wideband radiation in a wavelength range from 170 to 270 nm with the emission peaks at λmax=195 nm [Cl2(1Σ−1Π4)], 200 nm [C12**, and 258 nm [Cl2(D′-A′)]. Optimum conditions ensuring the maximum intensity of emission in the UV-VUV range due to transitions in the chlorine molecule have been established. The results are of interest from the standpoint of the development of a stationary shortwave low-pressure lamp filled with a He-Cl2 gas mixture.
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