Experimental Study on CH+ Formation from Doubly Charged Carbon and Molecular 
Hydrogen

Plasil, Radek; Rednyk, Serhiy; Kovalenko, Artem; Tran, Thuy Dung; Roucka, Stepan; Dohnal, Petr; Novotny, Oldrich; Glosik, Juraj

doi:10.3847/1538-4357/abe86c

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Experimental Study on CH⁺ Formation from Doubly Charged Carbon and Molecular Hydrogen

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Novotny, Oldrich
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Citation

Plasil, R., Rednyk, S., Kovalenko, A., Tran, T. D., Roucka, S., Dohnal, P., et al. (2021). Experimental Study on CH⁺ Formation from Doubly Charged Carbon and Molecular Hydrogen. Astrophysical Journal, 910(2): 155. doi:10.3847/1538-4357/abe86c.

Cite as: https://hdl.handle.net/21.11116/0000-000A-4B03-F

Abstract

We studied the reaction of doubly charged carbon C2+ (C iii) with
molecular hydrogen, a possible source of the high, unexplained
abundances of interstellar CH+. The experiment was carried out using the
cryogenic linear 22-pole radio frequency ion trap. The measured reaction
rate coefficient amounts to (1.5 0.2) x 10(-10) cm(3) s(-1), nearly
independently of the covered temperature range from 15 to 300 K. In the
product distribution study, the C+ ion was identified as the dominant
product of the reaction. For the CH+ production, we determine an upper
limit for the reaction rate coefficient at 2 x 10(-12) cm(3) s(-1).