Low-energy e-H-2 scattering: Separation of dissociative attachment and dissociation channels - art. no. 014703

Electron impact dissociation and dissociative attachment (DA) via the (2)Si gma (+)(u) shape resonance in e-H-2 collisions is treated by the quasiclass ical version of the nonlocal resonance theory. Optical theorem is applied t o analyze ail the energetically accessible channels. Collisionally induced dissociation and dissociative attachment cross sections for vibrationally o r rotationally excited H-2 molecule are presented in the electron energy ra nge up to 5 eV. It is shown that the DA cross sections we published recentl y [Phys. Rev. A 61, 052705 (2000)] in fact represent the sum of the cross s ections for the DA and dissociation processes in the energy range above the dissociation threshold.