Cross Sections and Rate Coefficients for Vibrational Excitation of HeH+ Molecule by Electron Impact

Mehdi Ayouz (1) , Viatcheslav Kokoouline (2)

1 LGPM - Laboratoire de Génie des Procédés et Matériaux - EA 4038
2 UCF | Physics - Department of Physics [Orlando]

Cross sections and thermally-averaged rate coefficients for vibration (de-)excitation of HeH + by an electron impact are computed using a theoretical approach that combines the multi-channel quantum defect theory and the UK R-matrix code. Fitting formulas with a few numerical parameters are derived for the obtained rate coefficients. The interval of applicability of the formulas is from 40 to 10,000 K.

Mots clés: helium hydride ion; vibrational excitation; R-matrix; quantum-defect theory

Domaines: Génie des procédés

Mehdi Ayouz, Viatcheslav Kokoouline. Cross Sections and Rate Coefficients for Vibrational Excitation of HeH+ Molecule by Electron Impact. Atoms, 2016, 4 (4), pp.30. ⟨10.3390/atoms4040030⟩. ⟨hal-01609834⟩