Classical vector analysis to study angular momentum of evaporated protons

The classical vector analysis is proposed to deduce angular momenta of evaporated protons from medium-energy proton-nucleus reactions. The intranuclear cascade model is applied to extract the angular momentum vector of highly excited nucleus, which is in equilibrium after the cascade process. The mixing ratios of angular momenta are determined to fit experimental angular distributions. Resultant ratios show clear tendency in terms of target mass.