THE LYMAN BANDS OF MOLECULAR HYDROGEN
1959; NRC Research Press; Volume: 37; Issue: 5 Linguagem: Inglês
10.1139/p59-070
ISSN1208-6045
Autores Tópico(s)Advanced Chemical Physics Studies
ResumoThe Lyman bands of H 2 have been investigated under high resolution with a view to improving the rotational and vibrational constants of H 2 in its ground state. Precise B v and ΔG values have been obtained for all vibrational levels of the ground state. One or two of the highest rotational levels of the last vibrational level (v = 14) lie above the dissociation limit. Both the [Formula: see text] and ΔG″ curves have a point of inflection at about v″ = 3. This makes it difficult to represent the whole course of each of these curves by a single formula and therefore makes the resulting equilibrium constants somewhat uncertain. This uncertainty is not very great for the rotational constants for which we find[Formula: see text]but is considerable for the vibrational constants ω e and ω e x e for which three-, four-, five-, and six-term formulae give results diverging by ± 1 cm −1 . The rotational and vibrational constants for the upper state [Formula: see text] of the Lyman bands are also determined. An appreciable correction to the position of the upper state is found.
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