Fissionlike events in the N14+Ta181 system

Abstract

Absolute cross sections for 22 fissionlike fragments concerning their decay mode via independent and cumulative cross sections have been measured at four projectile energies, i.e., $82.2\ifmmode\pm\else\textpm\fi{}0.8,\phantom{\rule{0.28em}{0ex}}79.18\ifmmode\pm\else\textpm\fi{}0.82,\phantom{\rule{0.28em}{0ex}}76.8\ifmmode\pm\else\textpm\fi{}1.2$, and $72.9\ifmmode\pm\else\textpm\fi{}0.91\phantom{\rule{0.28em}{0ex}}\mathrm{MeV}$. The recoil-catcher activation technique followed by offline $\ensuremath{\gamma}$-ray spectrometry was employed. The isotopic yield distribution and the variance for indium isotopes have been obtained from the experimental data and were found to be in agreement with the literature values. The fissionlike fragments mass distribution is found to be a single-peaked Gaussian distribution and confirms their population via deexcitation of the compound nucleus. The mass distribution variance is found to be narrower and exponentially increases as compared to relatively heavier systems at above 20% of the Coulomb barrier. A self-consistent approach for determining the isobaric charge dispersion parameters has been adopted. The present paper suggests that fission is one of the competing modes at low energies other than complete fusion and incomplete fusion processes.