Measurements of the average neutron total cross sections of N, F, Mg, P, Cl, Ti, Mn, Co, Ni, Zn, Se, Br, Mo, Ag, Cd, Sn, Sb, Te, La, Ta, W, Au, Hg, and Tl have been made over the 3- to 12-Mev energy range. The average energy spread of the measurements is approximately 10 percent and the over-all accuracy of the results is ±10 percent or better. The above data, together with those of a previous experiment, provide information on average cross-section behavior as a function of energy and atomic weight over most of the periodic table.

• Received 1 March 1954

DOI:https://doi.org/10.1103/PhysRev.94.1678