Learning about three particle continuum states from fast ion-atom collisions

Preliminary results for two fast ion-atom collision experiments were presented. The double detachment of H- leads to some low energy three-particle states which offer interesting possibilities for further investigations into the three-particle Coulomb problem. Secondary electrons from fast ion-atom collisions moving in the region between the two resulting ions appear to express some special features that merit further experimental and theoretical work. 8 refs.; 2 figs