Abstract
WE have investigated the absorption spectra of potassium and sodium vapours in an electric field with a method similar to the one used by C. J. Bakker in Prof. Zeeman's laboratory1, and have reached a field of about 2,700 volt/cm. in the absorbing layer. The background was given by a hydrogen tube. Hilger's E.1 spectrograph was used. Absorption spectra, polarised parallel and perpendicular to the field, were photographed simultaneously and separated by means of a spar crystal.
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References
Proc. Amst., 35, 589 1933.
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AMALDI, E., SEGRÈ, E. Series of Alkaline Atoms in an Electric Field. Nature 132, 444–445 (1933). https://doi.org/10.1038/132444a0
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DOI: https://doi.org/10.1038/132444a0
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