The K-series emission spectrum of neon : a study on the excitation of X-radiation in some gaseous elements by means of an electrodeless discharge, and an analysis of the radiation, in the case of the inert gas neon, with a bent crystal vacuum spectrograph (1954)
AuthorsMoore, Horace Raymondshow all
Experiments are reported in which the inert gases argon and neon were subjected to a high-voltage electrodeless discharge. The characteristics of the discharge were studied, and a theory of the mechanism of origin of the emitted x-radiation is proposed. The construction of a composite X-ray, incorporating both orthodox electrodes and an electrodeless discharge tube is described. This involved the building of a vacuum evaporating unit. Details are given of the construction of a photographically recording bent crystal vacuum spectrograph. Using a mica crystal, the working range of the instrument is about 5-19kX in the first order of reflection, the inverse linear dispersion being about 37 X/mm at 15 kX. A spectroscopic analysis of the X-radiation emitted by the inert gas neon is described. Twenty-one K-series lines were recorded, many of them for the first time. The majority of the lines have been identified and the wavelengths measured in all cases. The shapes of the main neon lines were obtained on an intensity scale, and their half-width values, uncorrected for possible diffraction breadth, were determined. As the result of these investigations certain conclusions are drawn.