Journal article
Predominant dissociation of the CO*(D²Π)n(d/s)σ Rydberg states into atomic excited Rydberg fragments with the same effective principal quantum number
Publication Details
Authors: | Ehresmann, A.; Demekhin, P.; Kielich, W.; Haar, I.; Schlüter, M.; Sukhorukov, V.; Schmoranzer, H. |
Publication year: | 2009 |
Journal: | Journal of Physics B: Atomic, Molecular and Optical Physics |
Pages range : | 165103 |
Volume number: | 42 |
ISSN: | 0953-4075 |
DOI-Link der Erstveröffentlichung: |
Abstract
Dissociation of the CO molecule excited in the photon energy range between 20 eV and 25 eV is investigated by photon-induced fluorescence spectroscopy (PIFS) detecting dispersed fluorescence from C I* 2s22p1n(d/s) fragments in the spectral range of 115-135 nm. First experimental indications were found for a predominant dissociation of the CO*(D2Π)n(d/s)σ Rydberg states into the Rydberg states of the neutral C I atom conserving the effective principal quantum number n* = n - δ of the Rydberg electron. Such a process has as yet been verified only for the dissociating molecular Rydberg series (c4Σ-u)n(d/s)σg3Σ-u in O*2 (H Liebel et al 2000 Phys. Lett. 267 267). The selective dissociation of the molecular Rydberg states into atomic ones is interpreted by theoretical potential energy curves of the CO+ ion and molecular orbitals of Rydberg electrons computed within the single-centre approach.
Dissociation of the CO molecule excited in the photon energy range between 20 eV and 25 eV is investigated by photon-induced fluorescence spectroscopy (PIFS) detecting dispersed fluorescence from C I* 2s22p1n(d/s) fragments in the spectral range of 115-135 nm. First experimental indications were found for a predominant dissociation of the CO*(D2Π)n(d/s)σ Rydberg states into the Rydberg states of the neutral C I atom conserving the effective principal quantum number n* = n - δ of the Rydberg electron. Such a process has as yet been verified only for the dissociating molecular Rydberg series (c4Σ-u)n(d/s)σg3Σ-u in O*2 (H Liebel et al 2000 Phys. Lett. 267 267). The selective dissociation of the molecular Rydberg states into atomic ones is interpreted by theoretical potential energy curves of the CO+ ion and molecular orbitals of Rydberg electrons computed within the single-centre approach.
