Sensitivity of gas-grain chemical models to surface reaction barriers: Effect from a key carbon-insertion reaction, C + H${}_2$ $\to$ CH${}_2$

Matjaž Simončič, Dmitry Semenov, Serge Krasnokutski +2

The feasibility of contemporary gas-grain astrochemical models depends on the availability of accurate kinetics data, in particular, for surface processes. We study the sensitivity…