Production cross sections for nuclei fragments from the interaction of ${}^{11}\mathrm{B}$ ions with ${}^{209}\mathrm{Bi}$ and ${}^{181}\mathrm{Ta}$ targets, in the intermediate energy regime, have been obtained with the induced-activity method and offline $\gamma$ spectroscopy. The mass-yield distributions were obtained and the fission process was investigated by using the multimodal fission approach in the case of the ${}^{209}\mathrm{Bi}$ target and a pure symmetric distribution for the ${}^{181}\mathrm{Ta}$ target. The fissilities were deduced for both targets and further compared to the data for proton-induced reactions. The relative values of the linear momentum imparted to the targets were derived from the cross section data.

• Received 23 May 2016

DOI:https://doi.org/10.1103/PhysRevC.94.024618