Abstract
IN the course of investigations on the optical excitation of gases in this laboratory, we noticed the interesting fact that the spectrum lines emitted by mercury vapour illuminated by an intense mercury lamp have a much simpler fine structure than usually. For example, the green line 5461, the complexity of which under ordinary conditions is well known, presents no components besides the central line, which when viewed through a 30 cm. Lummer plate, is resolved in 3 components only. The violet line 4359 exhibits the same features, the intensity of the stronger satellites as compared with that of the central line being very much less than in the arc. The same seems also to be true for the yellow line 5770. On the other hand, the lines 4047 and 5791 show all the strong satellites.
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GROSS, E., TERENIN, A. Fine Structure of Optically Excited Spectrum Lines. Nature 116, 280 (1925). https://doi.org/10.1038/116280b0
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DOI: https://doi.org/10.1038/116280b0
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