Measurement of residual cross sections in the Li7+Y89 reaction up to 5.7 MeV/nucleon and analysis of fusion mechanisms

Abstract

Different modes of fusion phenomena observed in the isolated experiments are not yet fully understood. To comprehend these fusion mechanisms, more experimental studies are necessary. In view of this, a new measurement of residual cross sections from the $^{7}\mathrm{Li}$-induced reaction on $^{89}\mathrm{Y}$ has been reported in this article within the 2.7--5.7 MeV/nucleon energy range. The $\ensuremath{\gamma}$-ray spectrometry has been used to identify the residues $^{93m}\mathrm{Mo}, ^{92m}\mathrm{Nb}, ^{89}\mathrm{Zr}, ^{91m}\mathrm{Y}$, and $^{90m}\mathrm{Y}$ produced in the reaction. A systematic analysis of the complete and incomplete fusion dynamics has been carried out by comparing the measured excitation functions with the equilibrium and pre-equilibrium reaction models in the framework of empire3.2.2 and alice19. A strong indication of the occurrence of incomplete fusion has been realized within the energy range considered; hence the incomplete fusion strength is discussed in detail. The product yield of $^{93m}\mathrm{Mo}$, which is a candidate radionuclide for radiopharmaceuticals, has been estimated.