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

Tijani Barkach, Thejus Mahajan, Marin Chabot, Karine Béroff, Néstor F. Aguirre, Kim Cuong Le, S. Diaz-Tendero, Thibaut Launoy, A. Le Padellec, Luc Perrot, Maelle A. Bonnin, Florian Geslin, Nicolas de Séréville, Fairouz Hammache, Aurélie Jallat, Anne Meyer, Emeline Charon, Thomas Pino, Thibault Hamelin, Valentine Wakelam

Research output: Contribution to journalArticlepeer-review

Abstract

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.
Original languageEnglish
Pages (from-to)25-32
JournalMolecular Astrophysics
Volume12
DOIs
Publication statusPublished - 2018 Sept
Externally publishedYes

Subject classification (UKÄ)

  • Subatomic Physics
  • Atom and Molecular Physics and Optics
  • Theoretical Chemistry

Free keywords

  • Carbon and nitrogen-based molecules Dissociation branching ratios Breakdown curves Astrochemistry KIDA database Cold cores

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