Journal article
Observation of the oscillating absorption spectrum of a double-well state: the B''B¹Σ⁺u state of H₂



Publication Details
Authors:
Glass-Maujean, M.; Klumpp, S.; Werner, L.; Ehresmann, A.; Schmoranzer, H.
Publication year:
2007
Journal:
Journal of Physics B: Atomic, Molecular and Optical Physics
Pages range:
F19-F26
Volume number:
40
ISSN:
0953-4075

Abstract
The absorption spectrum of a double-well state, the B''B1Σ+u state of H2, has been computed and compared with new experimental spectra in the energy range around its dissociation limit. Above the potential barrier, it is shown that the vibronic levels unexpectedly preserve a character linked to a definite well even if this character (the absorption probability) is partly shared by the neighbouring levels. The dissociation cross section presents beat-like oscillations at two frequencies as related to the classical oscillators of the two wells. The agreement with a measured high-resolution spectrum is excellent.


Research Areas


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