REACTIVE COLLISIONS BETWEEN ELECTONS AND MOLECULAR IONS-ESSENTIAL ELEMENTARY PROCESSES IN THE INTERSTELLAR MEDIA

PROGRAMME AND ABSTRACTS: VI Conference on Active Galactic
Nuclei and Gravitational Lensing, June 02-06, 2024, Zlatibor Mt.,
Serbia. Editors: J. Kovačević Dojčinović and V. A. Srećković

We describe the major low-energy electron-impact processes involving H⁺₂ and HD⁺, relevant for the early universe astrochemistry: dissociative recombination, inelastic and superelastic scattering. The Multichannel Quantum Defect Theory (MQDT) has been employed in computing cross sections and Maxwell rate coefficients for electrondriven reactions involving molecular cations. A new series of computations has been performed to obtain cross sections and rate coefficients for state-to-state ro-vibrational transitions on the H⁺₂ and HD⁺ ion, induced in collisions with low-energy electrons. We report cross sections and Maxwellian rate coefficients for both rotational and vibrational transitions, from the lowest 30 ro-vibrational levels and outline several important features, like rotational and resonant effects.