Abstract
AN excited state of helium of mass 3 (3He) has been previously suggested by me to explain a second low-energy group of neutrons from the deuteron-deuterium reaction1. Since present theory does not predict such an excited state2 in 3He, it is important to establish definitely whether such a state actually exists. This note gives the results of some cloud chamber experiments which were made in order to investigate this point.
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Bonner, T. W., Phys. Rev., 52, 685 (1937): 53, 711 (1938). Also see Baldinger, Huber, and Staub, Helv. phys. Acta, 11, 245 (1938) and Hudspeth, E., and Dunlap, H., Phys. Rev., in the Press.
Share, S., Phys. Rev., 53, 875 (1938); Schiff, L. I., Phys. Rev., 54, 92 (1938).
Bethe and Bacher, Rev. Mod. Phys., 8, 117 (1936); Staub and Stephens, Phys. Rev., 55, 131 (1939).
Kallmann and Kuhn, Naturwiss., 26, 106 (1938); Ruhlig, A. J., Phys. Rev., 54, 308 (1938); Kikuchi, S., and Aoki, H., Proc. Physico-Math. Soc. Japan, 21, 20 (1939).
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BONNER, T. Formation of Helium of Mass 3 in an Excited State. Nature 143, 681 (1939). https://doi.org/10.1038/143681b0
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DOI: https://doi.org/10.1038/143681b0
