One-neutron stripping processes to excited states of theLi6+Zr96reaction at near-barrier energies

Abstract

We report the measurement of one-neutron stripping to excited-state cross sections from the weakly bound projectile $^{6}\mathrm{Li}$ to the $^{96}\mathrm{Zr}$ target at near-barrier energies by the online $\ensuremath{\gamma}$-ray spectroscopy method. Transitions of the $^{97}\mathrm{Zr}$ nucleus were clearly identified by $\ensuremath{\gamma}\text{\ensuremath{-}}\ensuremath{\gamma}$ coincidences. This cross section was found to be much smaller than the previously reported complete-fusion cross section for this system at energies above the barrier, whereas it becomes of the same magnitude around the Coulomb-barrier energy. No evidence of two-neutron transfer was found. We also performed coupled reaction channel calculations for the one-neutron stripping process. The calculation results are discussed.