Table 1.
Destruction cross-sections of NH2CHO and the corresponding rates in the ISM.
| Processing | Destruction cross-section | Flux | Destruction rate | ||
|---|---|---|---|---|---|
| σd (cm2) | Φ (cm−2 s−1) |
Rd (s−1) |
|||
| Diffuse | Dense | Diffuse | Dense | ||
| H atoms | 3.0 ± 0.6 × 10−17 | 8 × 106 | 9.1 × 104 | 2.4 × 10−10 | 2.7 × 10−12 |
| Cosmic rays (a) | 3.7 ± 0.4 × 10−16 | 1.8 | 1 | 6.7 × 10−16 | 3.7 × 10−16 |
| UV photons (b) | 10−19–10−20 (c) | 8 × 107 (d) | 4.8 × 103 (e) | ||
Notes.
Corresponds to 1 MeV protons under monoenergetic approximation (G. A. Baratta and M. E. Palumbo, priv. comm.).
Cross-section of NH2CHO deposited on oxides and minerals (Corazzi et al. 2020).
Corresponds to 10 eV photons (Mathis et al. 1983).
Corresponds to 10 eV photons (Mennella et al. 2003).
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