Reactions of Uranium-238 with Carbon Ions

The excitation functions for some reactions of ${\mathrm{U}}^{238}$ with monoenergetic ${\mathrm{C}}^{12}$ ions have been measured by use of the stacked-foil technique. The (C, $4n$) and (C, $6n$) reactions were found to occur through the formation of a compound nucleus followed by neutron evaporation. The results were consistent with calculations made by a modified Jackson-type treatment. Application of the information from the ${\mathrm{U}}^{238}(\mathrm{C}, xn)$ reactions to the calculation of cross sections for the ${\mathrm{Pu}}^{242}(\mathrm{C}, 4n){\mathrm{Fm}}^{250}$ reaction was found to give agreement with experimental results.