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.
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