The Multiple and Plural Scattering of Fission Fragments

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Abstract
The multiple and plural scattering distributions of fission fragments in Au, Ag and Formvar foils have been measured. The value of the BORN parameter in this experiment is more than an order of magnitude larger than values that have previously been involved in such measurements. Since the fission fragments are only partially ionized, some approximation must be made to account for the additional electronic screening. Two different models, which may have some application to other experiments involving partially ionized particles are presented. The experimental distributions are compared with those predicted by the theories of MOLIÈBE and of NIGAM, SUNDARESAN and Wu and only with the theory of MOLIÈRE is it possible to obtain reasonable and consistent agreement with experiment.

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