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Table 2

Polynomial fit constants for partition functions of equilibrium, normal, and ortho and para H2.

Low temperature (T = 10–250 K)

Flavor a 0 a 1 a 2 a 3 a 4 rms

Equilibrium 2.673071615415136e-01 3.495586051757211e-03 1.227901619954258e-04 5.776440695273789e-07 9.251224490175610e-10 0.00516
Normal 2.277668085144430 3.115475456535298e-04 1.199204285095701e-05 1.348313176588763e-07 2.493525433376579e-10 0.00091
Ortho 2.996425936476927 3.807856081411796e-04 8.659737634951350e-06 5.779158662343921e-08 5.407749218414769e-11 0.00107
Para 9.994339093261912e-01 3.135419941617079e-04 1.599408560500201e-05 2.032015813340736e-07 4.090066248229891e-10 0.00186

Medium temperature (T = 200–1100 K)

Flavor a 0 a 1 a 2 a 3 a 4 rms

Equilibrium 1.410033600294133e-01 6.085738724141971e-03 4.096994909866605e-07 4.220221708082499e-10 8.790594164685680e-14 0.0007
Normal 1.919800108599199 1.746213811668277e-03 7.693197369847348e-06 6.504303232753276e-09 2.132168610356154e-12 0.00247
Ortho 2.891845114721733 1.243647561012797e-03 1.312997140340565e-05 1.105110818469195e-08 3.562652399419052e-12 0.00402
Para 3.312881928317837e-01 4.871438707876421e-03 2.339907793941012e-06 2.214128676054798e-09 8.210809799374644e-13 0.00164

High temperature (T = 1000–20 000 K)

Flavor a 0 a 1 a 2 a 3 a 4 rms

Equilibrium 9.661842638994980e-01 7.302127874247883e-03 6.760893004505151e-07 3.128741080316710e-10 1.645206030945910e-14 0.099
Normal 1.142827289681385e-01 7.245357485089481e-03 6.404547049175155e-07 3.110974834335349e-10 1.642844436813594e-14 0.10151
Ortho 2.231696541394133e-01 7.190413006059544e-03 6.192076726407582e-07 3.096074912455146e-10 1.640036910200170e-14 0.10242
Para 1.019053774741465e+00 7.360074236377774e-03 6.935790834485644e-07 3.145274660505019e-10 1.646581413255403e-14 0.10004

a 5


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