A multi-Coincident Study of the Quasimolecular 1s σ Radiation and its Angular Distribution in 40 MeV Ni-Ni Collisions

The production mechanism of quasimolecular (MO) x-rays in 40 MeV Ni-Ni collisions was investigated in a multi-parameter experiment. Impact parameter dependent MO x-ray production probabilities were determined. The study of the angular distribution of the emitted radiation allowed the determination of impact parameter dependent alignment parameters for this process. Triple coincident MO x-ray - Ni K x-ray - scattered projectile data provided for the determination of state selective MO x-ray production probabilities. The results are compared to dynamical calculations describing the time dependent evolution of the relevant quasimolecular states and the radiative couplings among them