Evidence for Angular Momentum Fractionation inKr86-Induced Reactions onAg107,109,Ho165, andAu197

Abstract

$\gamma$-ray multiplicities have been measured as a function of the light-fragment atomic number $Z_3$ for the above reactions. The failure of the measured $\gamma$ multiplicities for deep-inelastic collisions to rise with decreasing $Z_3$, according to the rigid-rotation limit, appears more likely to be associated with a selective population of the low-$Z$ fragments by the lower-$l$ waves rather than with an incomplete relaxation of the rotational energy.