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Dissociative Recombination of CH+ Molecular Ion Induced by Very Low Energy Electrons

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Institute for Nuclear Research, Hungarian Academy of Sciences, H-4001 Debrecen, Hungary
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UFD Mathématiques, Informatique Appliquée et Physique Fondamentale, University of Douala, Douala PO Box 24157, Cameroon
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Laboratoire Ondes & Milieux Complexes CNRS-UMR6294, Université du Havre, Normandie Université, F-76058 Le Havre, France
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Laboratoire Aimé Cotton CNRS-UMR9188, Universié Paris-Sud, ENS Cachan, Université Paris-Saclay, F-91405 Orsay, France
*
Author to whom correspondence should be addressed.
Atoms 2019, 7(3), 82; https://doi.org/10.3390/atoms7030082
Received: 24 June 2019 / Revised: 9 August 2019 / Accepted: 15 August 2019 / Published: 19 August 2019
(This article belongs to the Special Issue Atomic Processes in Plasmas: APiP-2019)
We used the multichannel quantum defect theory to compute cross sections and rate coefficients for the dissociative recombination of CH + initially in its lowest vibrational level v i + = 0 with electrons of incident energy below 0.2 eV. We have focused on the contribution of the 2 2 Π state which is the main dissociative recombination route at low collision energies. The final cross section is obtained by averaging the relevant initial rotational states ( N i + = 0 , , 10 ) with a 300 K Boltzmann distribution. The Maxwell isotropic rate coefficients for dissociative recombination are also calculated for different initial rotational states and for electronic temperatures up to a few hundred Kelvins. Our results are compared to storage-ring measurements. View Full-Text
Keywords: dissociative recombination; multichannel quantum defect theory; low temperature laboratory plasmas; diffuse molecular clouds dissociative recombination; multichannel quantum defect theory; low temperature laboratory plasmas; diffuse molecular clouds
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Mezei, Z.J.; Epée Epée, M.D.; Motapon, O.; Schneider, I.F. Dissociative Recombination of CH+ Molecular Ion Induced by Very Low Energy Electrons. Atoms 2019, 7, 82.

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