Exclusivep-pcorrelations from theNi58+58Ni reaction at ≊15 MeV/nucleon

Exclusive p-p correlations from the ${}_{}{}^{58}{}_{}{}^{}\mathrm{Ni}$ ${+}^{58}$Ni reaction at 850 MeV incident energy have been measured. The enhancement in the p-p correlation function observed for small values of Δp with a gate on ${\mathit{v}}_{\mathrm{rel}}$ is satisfactorily explained by stochastic proton emission followed by the p-p final-state interaction. A strong dependence of the p-p correlation function on the relative angle between the two-proton c.m. and the fragment velocities has been found. Also a dependence of the p-p correlation function on the Δp orientation with respect to the plane defined by the two-proton c.m. and the fragment velocities has been observed. This latter behavior has been attributed to angular momentum effects.