Abstract
THE separation of the hyperfine structure doublets of the resonance lines of potassium was measured by us1 by observation of the absorption of an atomic beam, and from these measurements the separation, ”v, of the two hyperfine structure levels of the term 4S½ of K39 was found to be 0.0152 cm.1. If the value of the nuclear spin were known, the magnetic moment could be calculated from the above value of ”v by means of Goudsmid's2 formula. In order to find the spin, it is necessary to determine accurately the intensity ratio of the hyperfine structure doublets ; this, however, could not be done, it being possible only to state that the component of shorter wavelength appeared to be stronger.
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References
D. A. Jackson and H. Kuhn, NATURE, 134, 25 (1934); and Proc. Roy. Soc., A, 148, 335 (1935).
S. Goudsmid, Phys. Rev., 43, 636 (1933).
S. Millman, Phys. Rev., 47, 739 (1935).
M. Fox and F. Rabi, Phys. Rev., 48, 746 (1935).
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JACKSON, D., KUHN, H. Nuclear Mechanical and Magnetic Moments of K39. Nature 137, 108 (1936). https://doi.org/10.1038/137108a0
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DOI: https://doi.org/10.1038/137108a0
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