Abstract
THE spectrum of the light from close to the cathode surface in a cold cathode discharge in nitrogen, at the negative end of the positive space charge of the cathode dark space, is remarkable for consisting predominantly of arc lines of nitrogen (NI)1,2. These lines are normally far less prominent elsewhere, for example, in the negative glow and positive column. As there is some evidence1 for a similar development of arc lines in a number of other common molecular gases, we have also made a survey of cathode glow spectra in some less frequently used vapours.
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References
Emeleus, K. G., and Hall, O., Proc. Roy. Irish Acad., 40, A, 1 (1932).
Emeleus, K. G., Proc. Phys. Soc., B, 67, 495 (1954).
Thomson, J. J., Rays of Positive Electricity (Camb. Univ. Press, 1921).
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EMELEUS, K., AHMAD, N. Cathode Glow (Erste Kathodenschicht) Spectra and Surface Neutralization of Ions. Nature 201, 485 (1964). https://doi.org/10.1038/201485a0
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DOI: https://doi.org/10.1038/201485a0
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