Proton-Proton Scattering at 68 Mev

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Abstract
Differential cross sections have been measured for the scattering of 68.3-Mev protons by hydrogen gas at 26 laboratory angles from 5° to 50°. The angular resolution is ±½° at small angles, and the estimated absolute probable errors are ±0.9% except at the smallest angles. The interference minimum of 5.19 millibarns occurs at 16.3° c.m. The cross section then rises to a maximum of 6.33 mb at 34° and falls to 6.16 mb at 90°.