Evidence of complex degrees of freedom in multinucleon transfer reactions of48Ca+124Sn

Abstract

Multinucleon transfer reactions in ${}^{48}$Ca+${}^{124}$Sn have been studied at 174 MeV with a time-of-flight magnetic spectrometer. The pickup and stripping of several protons and neutrons have been observed. The experimental isotope yields for the $\ensuremath{-}2p$ and $+2p$ channels cannot be reproduced with calculations that incorporate only independent single-nucleon transfer modes. The discrepancies can be accounted for by explicitly including nucleon pair and $\ensuremath{\alpha}$-cluster degrees of freedom.