Fission cross sections up to 20 MeV/nucleon

Fission cross sections have been measured for the following reactions: ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$(at $E_b=95, 122, 186, 245, \mathrm{and} 291$ MeV) on ${}_{}{}^{174}{}_{}{}^{}\mathrm{Yb}$, ${}_{}{}^{198}{}_{}{}^{}\mathrm{Pt}$, and ${}_{}{}^{238}{}_{}{}^{}\mathrm{U}$; ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$ (at $E_b=140, 175, 216, 250, \mathrm{and} 315$ MeV) on ${}_{}{}^{142}{}_{}{}^{}\mathrm{Nd}$, ${}_{}{}^{170}{}_{}{}^{}\mathrm{Er}$, ${}_{}{}^{192}{}_{}{}^{}\mathrm{Os}$, and ${}_{}{}^{238}{}_{}{}^{}\mathrm{U}$; ${}_{}{}^{32}{}_{}{}^{}\mathrm{S}$ (at $E_b=350, 500, \mathrm{and} 700$ MeV) on ${}_{}{}^{126}{}_{}{}^{}\mathrm{Te}$, ${}_{}{}^{144}{}_{}{}^{}\mathrm{Nd}$, and ${}_{}{}^{238}{}_{}{}^{}\mathrm{U}$; and ${}_{}{}^{58}{}_{}{}^{}\mathrm{Ni}$ (at $E_b=352\mathrm{} \mathrm{and} 875$ MeV) on ${}_{}{}^{96}{}_{}{}^{}\mathrm{Zr}$, ${}_{}{}^{116}{}_{}{}^{}\mathrm{Cd}$, and ${}_{}{}^{238}{}_{}{}^{}\mathrm{U}$. We find that use of statistical model calculations with the Bass heavy-ion potential, which fit the data below 10 MeV/nucleon, do not fit fission cross sections at higher energies. Invoking dynamical...