Time-dependent reactive scattering of the H-+H-2 <-> H-2+H- system

Quantum mechanical calculations of reaction probabilities for the ion-neutr al molecule collisions H- + H-2 <----> H-2 + H- are performed by means of t ime-dependent wave packet propagation. Results for two different potential energy surfaces tab initio and diatomics-in-molecules) an compared. The cal culated state-to-state reaction probabilities using product-Jacobi-coordina tes are compared with energy resolved reaction probabilities calculated wit h the flux-operator using reactant-Jacobi-coordinates and with time-indepen dent calculations. The shallow potential well of ca. 0.05 eV leads to some resonances in the reaction probabilities. In addition, we present results f or integral cross sections using the J-shifting method.