Abstract
DURING the recording of the spark spectrum of americium1 in the third order of the Baird three-metre grating spectrograph, a number of spectral lines appeared as four resolved components of a probable six-member flag pattern. While describing the performance of a 30-ft. Paschen–Runge spectrograph, Tomkins and Tomkins2 have published a photograph of the Am I line at 6405 A. showing it resolved into six components. The six component flag patterns, which lead to a nuclear spin of 5/2 for 95Am241, have been confirmed by interferometric studies.
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References
Thorne, R. P., Spectrochimica Acta, [8, 2, 71 (1956)].
Tomkins, F. S., and Tomkins, Fred M., Spectrochimica Acta, 6, 139 (1954).
Klinkenberg, P. F. A., Rev. Mod. Phys., 24, 2, 63 (1952).
Mayer, M. A., Phys. Rev., 78, 16 (1950).
Tomkins, F. S., and Tomkins, Fred M., J. Opt. Soc. Amer., 39, 357 (1949).
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THORNE, R. Nuclear Spin of Americium-241. Nature 178, 484–485 (1956). https://doi.org/10.1038/178484b0
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DOI: https://doi.org/10.1038/178484b0
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