Abstract
WHEN examining the vacuum spark spectra of light elements, some rather unexpected lines have been observed, which indicate optical energy states extremely high above the ionization limit, having a character approaching that of X-ray levels.
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References
Beutler, H., Z. Phys., 86, 495 (1933); and eight subsequent papers.
Compton, K. T., and Boyce, J. C., J. Franklin Inst., 205, 497 (1928).
See for references: Kiang, A. T., Ma, S. T., and Wu, T. Y., Chinese J. Phys., 2, 117 (1936).
Siegbahn, M., and Magnusson, T., Z. Phys., 96, 1 (1935).
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EDLÉN, B., TYRÉN, F. Atomic Energy States of an Unusual Type. Nature 143, 940–941 (1939). https://doi.org/10.1038/143940a0
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DOI: https://doi.org/10.1038/143940a0
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