Fig. 9
Ratios N(3, 3)/N(1, 1) as a function of ζ for three scenarii for H
excitation at formation. A: 33% of the exothermicity is used as internal energy, B: H is formed following a Boltzmann distribution at gas temperature, C: H is formed in its two levels (1, 1) and (1, 0) in a ratio corresponding to their degeneracy. Solid lines correspond to G0 = 1 and dotted lines to G0 = 10.
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