Table A.3
Reaction rates of the different dissociative recombination channels of CH2D+ with an electron.
| Product (CH2D+ + e− →) | α [cm3 s−1] | β | γ | k [cm3 s−1 ] |
|---|---|---|---|---|
| C + H + HD | 2.0 × 10−7 | −0.3 | 0.0 | 4.0 × 10−7 |
| C + D + p-H2 | 5.0 × 10−8 | −0.3 | 0.0 | 1.0 × 10−7 |
| C + D + o-H2 | 5.0 × 10−8 | −0.3 | 0.0 | 1.0 × 10−7 |
| H + H + CD | 5.3 × 10−8 | −0.3 | 0.0 | 1.1 × 10−7 |
| H + D + CH | 1.1 × 10−7 | −0.3 | 0.0 | 2.2 × 10−7 |
| CH + HD | 9.3 × 10−8 | −0.3 | 0.0 | 1.8 × 10−7 |
| CD + p-H2 | 2.3 × 10−8 | −0.3 | 0.0 | 4.6 × 10−8 |
| CD + o-H2 | 2.3 × 10−8 | −0.3 | 0.0 | 4.6 × 10−8 |
| H + CHD | 2.7 × 10−7 | −0.3 | 0.0 | 5.4 × 10−7 |
| D + CH2 | 1.3 × 10−7 | −0.3 | 0.0 | 2.6 × 10−7 |
| CH2D + photon | 1.0 × 10−10 | −0.7 | 0.0 | 5.0 × 10−10 |
Notes. Left to right: α, β and γ represent the pre-exponential factor and power indices, respectively, where their values are taken from Sipilä et al. (2015) and Sipilä et al. (2019). The reaction rates, k, are computed for a gas temperature of 30 K following the modified Arrhenius equation, k(T) = α (T/300)ß e−γ/T.
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