Correlated fission fragments emitted in the reaction ofO16onU238at 20 MeV/nucleon

The reactions induced by 315-MeV ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$ ions on ${}_{}{}^{238}{}_{}{}^{}\mathrm{U}$ have been studied by observing the folding angle between the two fission fragments resulting from the sequential fission decay of the target residue in coincidence with reaction products ranging from protons to ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$ ions. A kinematical analysis shows that the emission of light particles ($p$, $d$, $t$, $\alpha$) plays an important role for both central and peripheral reactions. It is concluded that these particles, most likely, are emitted during the early stages of the reaction.