Physical Review LettersRemoval of Zeeman-Level Degeneracy in Alkali Atoms by an Electric FieldE. Lipworth, P. G. H. SandarsPublished Dec 14, 1964• 25 citationsPublisherAbstractReceived 6 November 1964DOI:https://doi.org/10.1103/PhysRevLett.13.716©1964 American Physical SocietyDOI10.1103/physrevlett.13.716