Detachment of electrons during the collision of two negative ions

The cross sections of the detachment of one and two electrons during the collision of two negative ions H^? + H^?, H^? + Cs^?, and Cs^? + Cs^? are calculated in a wide range of collision energies: from the energy threshold to approximately 100 keV. In adiabatically slow collisions, the detachment of electrons occurs as a result of one-or two-electron Auger decays whose rates are calculated in the approximation of asymptotically large separations between ions. For high collision energies, the cross sections of the electron detachment are calculated by the method of close coupling of states. The calculated cross sections are in good agreement with the results of experimental measurements made for the H^? + H^? collision.