Fissionability as a Function of Angular Momentum for theRe181Compound Nucleus at an Excitation Energy of 70 MeV

A method is described which allows the calculation of the spin dependence of the probability for fission of compound nuclei from experimental data. The method is applied to the study of the behavior of ${\mathrm{Re}}^{181}$ compound nuclei formed in three different ways with an excitation energy of 70 MeV: ${\mathrm{C}}^{12}$+${\mathrm{Tm}}^{169}$, ${\mathrm{O}}^{16}$+${\mathrm{Ho}}^{165}$, and ${\mathrm{Ne}}^{22}$+${\mathrm{Tb}}^{159}$. The experimental fission cross sections were taken from Sikkeland. The fission probability is found to increase with increasing angular momentum in accord with liquid-drop-model calculations.