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Table 2
Rate coefficients for the formation and destruction reactions of C2H toward the Orion Bar.
| Reaction | α | β | γ | T (K) | Reference |
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|
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| (2) | 1.78 × 10-10 | 0 | 1469 | 295−493 | Pitts et al. (1982) |
| (3) | 3.30 × 10-9 | 0 | 2.27 | 10−41 000 | Van Dishoeck et al. (2006) |
| (4) | 1.35 × 10-7 | −0.5 | 0 | − | Florescu-Mitchell & Mitchell (2006) |
| (5) | 1.50 × 10-7 | −0.5 | 0 | 10−300 | Prasad & Huntress (1980) |
| (6) | 1.60 × 10-9 | 0 | 2.3 | − | Van Hemert & Van Dishoeck (2008), Van Dishoeck et al. (2006) |
| (7) | 2.90 × 10-12 | 1.75 | 539 | 178−4650 | Kruse & Roth (1997) |
| (8) | 1.00 × 10-9 | −0.5 | 0 | 10−41000 | Prasad & Huntress (1980) |
| (9) | 1.00 × 10-10 | 0.0 | 0 | 10−2500 | KIDA critical evaluation (based on experimental data) |
Notes. For two-body reactions, the rates are given by the Arrhenius-type formula of 
(cm3 s-1) and for photoreactions by the k = αexp(−γAV) (s-1) formula.
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