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| Titel: |
Low-lying energy levels of the FeH molecule |
| Auteur: |
HULLAH, DANIEL F. BARROW, RICHARD F. BROWN, JOHN M. |
| Verschenen in: |
Molecular physics |
| Paginering: | Jaargang 97 (1999) nr. 1-2 pagina's 93-103 |
| Jaar: |
1999-07-20 |
| Inhoud: |
High-resolution laser-excited fluorescence spectra of FeH at T ∼350 K have been recorded and analysed to derive new information about some of the low-lying electronic states. In particular, transitions assigned to e6Π—b6Π have enabled the lowest rotational levels of ν = 0 in b6Π7/2, b6Π5/2, and, with less certainty, b6Π3/2, to be identified. The J = (7/2)± level of the ν = 0 level of the b6Π7/2 state lies 3902.93cm-1 above ν = 0, J = (7/2)± in X4 Δ7/2. Another weaker series also appears to involve a state with a lowest J value of 7/2: in contrast to the behaviour of most other known states (except notably for X4Δ7/2), the ΛA-type doubling in the rotational levels of the new state is very small, no more than 0.04cm-1 at J = 11/2. This level appears to be ν = 0 of C4Φ7/2, for which T0(7/2)± is determined to be 3755.28cm-1. Even with the narrow-line excitation and relatively low temperature of the present experiments, fluorescence spectra are very rich and much analysis remains. However, the indications are that the ab initio calculations on the low-lying states give the right general impression, even if the predictions, especially for the quartet states, are not always correct in detail. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 34 van 66 gevonden artikelen
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