Reducibility and Thermal and Mass Scaling in Angular Correlations from Multifragmentation Reactions

The azimuthal angular correlations of light charged particles and light intermediate mass fragments emitted from the reaction ${}^{36}\mathrm{Ar}{+}^{197}\mathrm{Au}$ at $E/A=50\mathrm{MeV}$ are found to be reducible to the angular distributions of individual fragments. Thermal scaling is also observed in the coefficients of the angular correlations. Furthermore, the observed scaling with fragment mass seems to imply secondary emission from relatively small ( $A\approx 15–30$) primary fragments.