An experimental measurement of the angular distribution of the scattering of 19.8-Mev protons by protons is described. The scattering material was hydrogen gas and detection was by scintillation counters. The cross section as a function of center-of-mass scattering angle reveals a minimum at 26^∘{} where dσdω=22.6±0.3 mb/steradian. The measurements range from 14^∘{} where dσdω=59.7±2.0 mb/steradian to 90^∘{} where dσdω=24.6±0.3 mb/steradian and include measurements at 15 angles. The phase-shift analysis of the data is as yet incomplete.
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Burkig et al. (1959) studied this question.
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