Abstract
The first excited singlet gerade state of H2, EF1 Σ9 +, has a double-minimum potential function arising from an avoided crossing of the E(lsσ 2sσ) and the F(2sσ)2 configurations [1]. This state can be selectively populated through two-photon absorption processes as first demonstrated by KLIGLER and RHODES [2]. This fact has been exploited in various three-photon double-resonance excitation schemes which recently have led to the discovery of previously unobserved rotation-vibration levels in the EF state [3],and also have provided novel information about autoionizing and field-ionizing Rydberg levels of 1Σu + and 1Πu symmetry [4]. Emissions following the excitation of highly excited gerade states have been used to determine radiative and collisional electronic relaxation rates [5].
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© 1985 Springer-Verlag Berlin Heidelberg
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Senn, P., Quadrelli, P., Dressler, K., Wolniewicz, L. (1985). New Identifications of Highly Excited States of the H2 Molecule Accessible by Multiphoton Spectroscopy. In: Hänsch, T.W., Shen, Y.R. (eds) Laser Spectroscopy VII. Springer Series in Optical Sciences, vol 49. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-39664-2_44
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DOI: https://doi.org/10.1007/978-3-540-39664-2_44
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