Angular dependence of dissociative electron attachment to polyatomic molecules: Application to theB12metastable state of theH2OandH2Sanions

Daniel J. Haxton, C. William McCurdy, Thomas N. Rescigno
2006 Physical Review A. Atomic, Molecular, and Optical Physics  
The angular dependence of dissociative electron attachment (DEA) to polyatomic targets is formulated in the local complex potential model, under the assumption that the axial recoil approximation describes the dissociation dynamics. An additional approximation, which is found to be valid in the case of H2O but not in the case of H2S, makes it possible to describe the angular dependence of DEA solely from an analysis of the fixed-nuclei entrance amplitude, without carrying out nuclear dynamics
more » ... lculations. For H2S, the final-vibrational-state-specific angular dependence of DEA is obtained by incorporating the variation of the angular dependence of the entrance amplitude with nuclear geometry into the nuclear dynamics. Scattering calculations using the complex Kohn method and, for H2S, full quantum calculations of the nuclear dynamics using the Multi-Configuration Time-Dependent Hartree method, are performed.
doi:10.1103/physreva.73.062724 fatcat:24sjaalzl5elpe2xfjjaghz2nq