Collision broadening of continuum radiation from Ni+Ni collisions

Abstract
The projectile energy dependence of characteristic K X-ray and high-frequency quasimolecular X-ray production cross sections in Ni+Ni collisions has been measured. The extracted half widths for the frequency distribution of the continuum radiation above the united-atom limit increase as the projectile velocity to the 0.59 power. Theoretical descriptions of the collision-broadened quasimolecular radiation are inadequate to explain these results.