The differential cross sections for elastic scattering of 4.1-Mev neutrons by Be, C, Al, Ti, Fe, Zn, Zr, Cd, Sn, Ta, W, Au, Pb, and Bi were measured using a biased scintillation detector with thresholds at about 2.0, 2.6, and 3.2 Mev. Multiple scattering corrections were made by an approximate method, the accuracy of which was investigated by Monte Carlo calculations. Inelastic collision cross sections and elastic transport cross sections were computed from the data. The experimental results are compared with theoretical cross sections calculated using the complex square-well potential of Feshbach, Porter, and Weisskopf.

• Received 7 December 1954

DOI:https://doi.org/10.1103/PhysRev.98.677