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Table B.1
continued.
| Reaction | Rate coefficient (cm3 s-1) | T range | Ref. |
|
|
|||
| 6...... He++ + e−→ He+ + γ | k6 = 1.891 × 10-10(1.0+
 |
5 | |
×
(1.0+
/( |
|||
| 7...... H + e−→ H− + γ | k7 = 1.4 × 10-18T0.928exp( − T/ 16 200) | 6 | |
| 8...... H− + H → H2 + e− | k8 = a1(Ta2 + a3Ta4 + a5Ta6) / (1.0 + a7Ta8 + a9Ta10 + a11Ta12) | 7 | |
| a1 = 10-10 | |||
| a2 = 9.8493 × 10-2 | |||
| a3 = 3.2852 × 10-1 | |||
| a4 = 5.5610 × 10-1 | |||
| a5 = 2.7710 × 10-7 | |||
| a6 = 2.1826 | |||
| a7 = 6.1910 × 10-3 | |||
| a8 = 1.0461 | |||
| a9 = 8.9712 × 10-11 | |||
| a10 = 3.0424 | |||
| a11 = 3.2576 × 10-14 | |||
| a12 = 3.7741 | |||
9...... H + H+→ H
+ γ |
k9 = 2.10 × 10-20(T/ 30.)-0.15 | T< 30 K | 8 |
| dex[−18.20 − 3.194log 10T + 1.786(log 10T)2 − 0.2072(log 10T)3 ] | T ≥ 30 K | ||
| 10...... H
+ H → H2 + H+ |
k10 = 6.0 × 10-10 | 9 | |
| 11...... H2 + H+→ H
+ H |
k11=
dex |
102 ≤ T ≤ 108 K | 10 |
| 12...... H−+ e−→ H + 2e− | k12 = exp[–18.018 493 342 73 | 1 | |
| + 2.360 852 208 681 lnTe | |||
| – 2.827 443 061 704 × 10-1 (ln Te)2 | |||
| + 1.623 316 639 567 × 10-2 (ln Te)3 | |||
| – 3.365 012 031 362 999 × 10-2 (ln Te)4 | |||
| + 1.178 329 782 711 × 10-2 (ln Te)5 | |||
| – 1.656 194 699 504 × 10-3 (ln Te)6 | |||
| + 1.068 275 202 678 × 10-4 (ln Te)7 | |||
| – 2.631 285 809 207 × 10-6 (ln Te)8] | |||
Reference. 5) Verner & Ferland (1996); 6) de Jong (1972); 7) Kreckel et al. (2010); 8) Coppola et al. (2011); 9) Karpas et al. (1979); 10) Savin et al. (2004) and Grassi et al. (2011), see Table B.3 for the coefficients.
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