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

Marjan Khamesian (1) , Mehdi Ayouz (2) , Jasmeet Singh (1, 3) , Viatcheslav Kokoouline (1)

1 UCF - University of Central Florida [Orlando]
2 LGPM - Laboratoire de Génie des Procédés et Matériaux - EA 4038
3 University of Delhi

Cross sections for rotational excitation and de-excitation of the HeH+ ion by an electron impact are computed using a theoretical approach that combines the UK R-Cross sections for rotational excitation and de-excitation of the HeH+ ion by an electron impact are computed using a theoretical approach that combines the UK R-matrix code and the multi-channel quantum defect theory. The thermally-averaged rate coefficients derived from the obtained cross sections are fitted to an analytical formula valid for a wide range of temperatures. matrix code and the multi-channel quantum defect theory. The thermally-averaged rate coefficients derived from the obtained cross sections are fitted to an analytical formula valid for a wide range of temperatures.

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

Domaines: Physique [physics]; Sciences de l'ingénieur [physics]

Marjan Khamesian, Mehdi Ayouz, Jasmeet Singh, Viatcheslav Kokoouline. Cross Sections and Rate Coefficients for Rotational Excitation of HeH+ Molecule by Electron Impact. Atoms, 2018, 6 (3), pp.49. ⟨10.3390/atoms6030049⟩. ⟨hal-01977262⟩