HeII Case B Recombination Cooling Coefficients

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Beta B HeII.png

Recombination cooling coefficients for HeII -> HeI, Case B.

HS98

Hummer & Storey 1998, MNRAS 297, 1073

log(T) (kT) − 1βB[10 − 17m3s − 1 ]
1.0 8.347
1.2 7.889
1.4 7.430
1.6 6.971
1.8 6.512
2.0 6.056
2.2 5.603
2.4 5.154
2.6 4.710
2.8 4.274
3.0 3.847
3.2 3.431
3.4 3.031
3.6 2.650
3.8 2.291
4.0 1.960
4.2 1.660
4.4 1.394

My fit to HS98

\beta_{\mathrm{B HeII}} = 1.534\times 10^{-39} T^{0.4017} \left( 1 + \left(\frac{T}{5.620\times 10^3\mathrm{K}}\right)^{0.444} \right)^{-1} \mathrm{J} \mathrm{m}^3 \mathrm{s}^{-1}


See Also

Recombination Coefficients

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