Abstract
USING the cloud chamber method, we1 have investigated the beta-ray spectra of 24Na. The K.-U. plot showed clearly the existence of two groups. The energy difference between the higher energy group and the lower one is about 1 Mv., their relative intensities being 2, 3 and 1 respectively. The higher energy group lies on the first forbidden Sargent curve, for which Δi = 1, while the lower one is on the permitted Sargent curve, Δi = 0.
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References
Amaki, T., and Sugimoto, A., Sci. Pap. Inst. Phys. Chem. Res., in the Press.
Kurie and Richardson, Phys. Rev., 50, 999 (1936).
Richardson, Phys. Rev., 53, 124 (1938).
Bethe, Rev. Mod. Phys., 9, 226 (1937).
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SUGIMOTO, A. Energy Levels of the 24Mg Nucleus. Nature 142, 754–755 (1938). https://doi.org/10.1038/142754d0
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DOI: https://doi.org/10.1038/142754d0
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