Effect of neutron excess in the entrance channel on the O 18 + Nb 93 system: An experimental study relevant to incomplete-fusion dynamics

摘要: The incomplete fusion dynamics in the $^{18}\mathrm{O}+^{93}\mathrm{Nb}$ system at energies above Coulomb barrier has been investigated. experimentally measured cross sections have compared with theoretical predictions of statistical model code pace4. To examine effect entrance channel parameters on onset and strength fusion, relative contributions complete deduced from analysis excitation functions. contribution functions studied terms various parameters, namely, mass asymmetry (${\ensuremath{\mu}}_{A}$) interacting projectile target combination, factor (${Z}_{P}{Z}_{T}$), ground state $\ensuremath{\alpha}\text{\ensuremath{-}}Q$ value reaction, neutron skin thickness nuclei. It found that probability depends strongly parameters. Further, for $^{18}\mathrm{O}$ two excess neutrons is noticed to be relatively larger as $^{16}\mathrm{O}$. This may due breakup resulting rather weak binding forces existence below critical angular momentum (${\ensuremath{\ell}}_{\mathrm{crit}}$), i.e., $\ensuremath{\ell}\ensuremath{\leqslant}\phantom{\rule{4pt}{0ex}}{\ensuremath{\ell}}_{\mathrm{crit}}$, also observed system.