Table B.1
Thermal processes associated with the chemical network in Table A.1.
| Process | Rate coefficient l [J m3/s] | References |
|
|
||
| H CI cooling | l1 = −13.5984 eV × k1 | |
| He CI cooling | l3 = −24.5874 eV × k3 | |
| He+ CI cooling | l5 = −54.41776 eV × k5 | |
| H+ RR cooling | l2 = −8.7 × 10-40T0.5(T/ 103)-0.2 [1 + (T/ 106)0.7] -1 | 1 |
| He+ RR+DR cooling | l4 = −1.0333 × 10-23Tk4a−6.5263157 × 10-18k4b | 1 |
| He2+ RR cooling | l6 = −1.0357142 × 10-23Tk6 | 1 |
| H (all n) CE cooling | l1 = −7.5 × 10-32 [1 + (T/ 105)0.5] -1exp(−118348 /T) | 1 |
| He+ (n = 2) CE cooling | l3 = −5.54 × 10-30T-0.397 [1 + (T/ 105)0.5] -1exp(−473638 /T) | 1 |
| H+, He+, He2+ Bremsstrahlung |
|
2 |
| H2 CD cooling | l12,13 = −4.48 eV × k12,13 | 3 |
| H2 formation heating | l10 = + 1.83 eV × fcrk10 | 3, 4 |
| l8 = + 3.53 eV × fcrk8 | 3, 4 | |
| Process | Energy source Le [J/m3s] | References |
|
|
||
| He(23S) CI cooling |
|
1 |
| He (n = 2,3,4 triplets) CE cooling |
|
1 |
| H2 (ro-vibrational) CE cooling | LH2; see text | 5 |
Notes. CI: collisional ionization; RR: radiative recombination; CE: collisional excitation; CD: collisional dissociation; DR: di-electronic recombination. The quantity q in the Bremsstrahlung expression is the ion charge.
Reference. (1) Cen (1992); (2) Black (1981); (3) Omukai (2000); (4) Hollenbach & McKee (1979); (5) Glover & Abel (2008).
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