Recombination and excitation of molecular cations with electrons: Application to H2+, BeD+ and BeT+

Autor: Ousmanou Motapon, Felix Iacob, S. Niyonzima, Vincenzo Laporta, Nicolina Pop, I.F. Schneider, M. D. Epée Epée, J. Zs. Mezei
Rok vydání: 2019
Předmět:
Zdroj: AIP Conference Proceedings.
ISSN: 0094-243X
DOI: 10.1063/1.5090054
Popis: Among the most relevant reactive elementary processes in cold ionized gases are the dissociative recombination, the ro-vibrational excitation, the ro-vibrational de-excitation and the dissociative excitation. Their detailed description is essential for modeling these environments. By using a stepwise version of the multichannel quantum defect theory, we provide cross sections and rate coefficients for electron-induced reactions on H2+, BeD+ and BeT+ relevant for the chemistry of the primordial Universe and interstellar medium and for fusion related molecular plasmas. Different reaction mechanisms are revised for the H2+ molecular cation, namely direct vs. indirect and rotational vs. non-rotational processes. A complete set of vibrationally resolved rate coefficients for reactive collisions of BeD+ and BeT+ cations below their dissociation limit are presented.Among the most relevant reactive elementary processes in cold ionized gases are the dissociative recombination, the ro-vibrational excitation, the ro-vibrational de-excitation and the dissociative excitation. Their detailed description is essential for modeling these environments. By using a stepwise version of the multichannel quantum defect theory, we provide cross sections and rate coefficients for electron-induced reactions on H2+, BeD+ and BeT+ relevant for the chemistry of the primordial Universe and interstellar medium and for fusion related molecular plasmas. Different reaction mechanisms are revised for the H2+ molecular cation, namely direct vs. indirect and rotational vs. non-rotational processes. A complete set of vibrationally resolved rate coefficients for reactive collisions of BeD+ and BeT+ cations below their dissociation limit are presented.
Databáze: OpenAIRE