Bombarding energy dependence of deep inelastic fragment kinetic energies

The bombarding energy dependence of deep inelastic fragment kinetic energies has been measured for ${}_{}{}^{35}{}_{}{}^{}\mathrm{Cl}$ + ${}_{}{}^{27}{}_{}{}^{}\mathrm{Al}$ collisions at $E\left({}_{}{}^{35}{}_{}{}^{}\mathrm{Cl}\right)=140,150,160, \mathrm{and} 170$ MeV. The results are compared with a simple classical model to show that the observed energy dependence is in reasonable agreement with a classical picture of strong tangential friction leading to rigid rotation of a very extended intermediate dinuclear system.