Mechanisms of heavy ion dissipative collisions: TheBi209+Kr84reaction atElab=712MeV

Projectilelike reaction products from the ${}_{}{}^{209}{}_{}{}^{}\mathrm{Bi}$+${}_{}{}^{84}{}_{}{}^{}\mathrm{Kr}$ reaction were studied at a laboratory bombarding energy of 712 MeV. The fragments were identified by atomic number, and their kinetic energies and angular distributions were measured with solid-state $\Delta E-E$ telescopes. The angular distribution is found to be peaked at an angle slightly smaller than the grazing angle and the $Z$ distribution is peaked near $Z=36\mathrm{}$. Correlations of the experimental variables show that the angular and $Z$ distributions broaden drastically with kinetic energy dissipation in damped reactions. Various correlations between experimental observables, including the variance of the $Z$ distributions as a function of the reaction $Q$ value and the relationship between kinetic energy and reaction angle, are interpreted in terms of a classical dynamical model using a proximity one-body transport formalism.