Semiempirical breakdown curves of C2N(+) and C3N(+) molecules ; application to products branching ratios predictions of physical and chemical processes involving these adducts

Id Barkach, T.; Mahajan, Thejus T. M; Chabot, Marin; Béroff, Karine; Aguirre, Néstor N.F.; Diaz-Tendero, Sergio; Launoy, Thibaut; Le Padellec, Arnaud; Perrot, Luc; Bonnin, Maëlle; LE, Thi Kim Cuong LE; Geslin, F.; de Séréville, Nicolas; Hammache, Fairouz; Meyer, Anne; Jallat, Aurélie; Charon, Emeline; Pino, Thomas; Hamelin, T.; Wakelam, Valentine

doi:doi/10.1016/j.molap.2018.06.003

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Résumé :

We constructed semiempirical breakdown curves (BDC) for C2N, C3N, C2N+ and C3N+ molecules. These BDC, which are energy dependent dissociation branching ratios (BR) curves, were used to predict products branching ratios for various processes leading to the formation of C2N(+) and C3N(+) excited adducts. These processes, of astrochemical interest, are neutral-neutral and ion-molecule reactions, dissociative recombination and charge transfer reactions with He+. Model predictions of BR are compared to the literature data and to reported values in the kinetic database for astrochemistry KIDA. With the new BR values, the CnN abundances in cold cores were simulated.

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