Deviations from the scattering to be expected on the basis of an inverse square law of force between alpha-particles receive a satisfactory interpretation in terms of the influence on particles of zero, two and four units of angular momentum of a specific nuclear interaction having a range less than 9×{}10^-13 cm. The semistable state of the compound nucleus Be⁸ formed in certain disintegration experiments is found from the scattering analysis to have an energy of about 3 Mev, a mean life of 0.8×{}10^-21 sec., and zero angular momentum. There is also some evidence for a semistable state of still shorter life with two units of angular momentum and an energy of 4 to 5 Mev.
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John Wheeler (1941) studied this question.
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