2024/10/08 by Dávid Hvizdoš, Hvizdos, David, Roman Čurı́k +3 · 1 citation
Physics and Astronomy · #Atomic and Molecular Physics #Chemical Physics (physics.chem-ph) #FOS: Physical sciences #Laser-Matter Interactions and Applications #Stellar, planetary, and galactic studies
paper · pdf · doi:10.48550/arxiv.2410.06135
openalex publication_date 2024/10/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
This article solves two major tasks that frequently arise in the theory of electron collisions with a target molecular cation. First, it extends the energy-dependent frame transformation treatment(EDFT), which is needed to map fixed-nuclei electron-molecule scattering matrices into an energy-dependent laboratory frame scattering matrix with vibrational channel indices. The EDFT mapping can now be carried out even when the target molecule possesses multiple low energy potential curves, significantly transcending previous applications. Secondly, it implements a method to extract the rest of the full lab-frame scattering matrix, i.e. the columns and rows describing input and/or output dissociation channels. The treatment is benchmarked in this article against the essentially exact solution of a refined two-dimensional model of the singlet gerade Σ symmetry of H2. Our tests demonstrate that the theory accurately maps fixed-nuclei scattering information, of the type provided by existing electron-molecule computer codes, into a laboratory-frame scattering matrix that includes both ionization and dissociation. This treatment can provide a general framework applicable to a broad class of electron collision processes involving diatomic target ions, suitable for an accurate description of challenging processes such as dissociative recombination.