Asymmetry, Anisotropy, and Excitation Function for the Proton-Induced Fission ofRa226

The anisotropy of the fragment angular distribution, the asymmetry of the fragment mass distribution, and the relative cross section for proton-induced radium fission have been measured as functions of incident proton energy in the range $6.0\le E_p\le 13.0$ MeV. The anisotropy and excitation function have also been studied as functions of $E_p$ for the symmetric and asymmetric components of the mass distribution. The angular-distribution data for the two components of the mass distribution are similar. There is no conclusive evidence in these data to indicate whether one or two saddle-point states are involved in $\mathrm{Ra}+p$ fission.