Journal article
Experimental and theoretical study of the npπ1Πu- (n⩾4) excited states of D-2: Absolute absorption cross sections and branching ratios for ionization, dissociation and fluorescence
Publication Details
Authors: | Glass-Maujean, M.; Vasserot, A.; Jungen, C.; Schmoranzer, H.; Knie, A.; Kübler, S.; Ehresmann, A. |
Publisher: | ACADEMIC PRESS INC ELSEVIER SCIENCE |
Publication year: | 2015 |
Journal: | Journal of Molecular Spectroscopy |
Pages range : | 155-171 |
Volume number: | 315 |
Start page: | 155 |
End page: | 171 |
Number of pages: | 17 |
ISSN: | 0022-2852 |
DOI-Link der Erstveröffentlichung: |
Abstract
The absolute absorption cross section and the branching ratios for the competing decay channels fluorescence, dissociation, and ionization of photoexcited long-lived (1)Pi(-)(u) superexcited molecular levels in Dy have been measured with a spectral resolution of 0.001 nm from the ionization threshold of Dy up to the D(n = 1) + D(n = 3) dissociation limit. The experimental energies and absorption line intensities are compared with fully ab initio multichannel quantum defect theory (MQDT) calculations GlassMaujean et al. (2011) which are based on quantum-chemical potential energy curves and transition moments of Wolniewicz and collaborators Wolniewicz and Staszewska (2003) and http://fizyka.umk. pl/ftp/pub/publicationsfifizfluwo. The overall agreement between experiment and theory is good. The branching ratios for the competing decay channels are also reproduced by the calculations including their substantial variations from level to level. A comparison of the vibronic interactions in the isotopomers Hy and Dy is made. (C) 2015 Elsevier Inc. All rights reserved.
The absolute absorption cross section and the branching ratios for the competing decay channels fluorescence, dissociation, and ionization of photoexcited long-lived (1)Pi(-)(u) superexcited molecular levels in Dy have been measured with a spectral resolution of 0.001 nm from the ionization threshold of Dy up to the D(n = 1) + D(n = 3) dissociation limit. The experimental energies and absorption line intensities are compared with fully ab initio multichannel quantum defect theory (MQDT) calculations GlassMaujean et al. (2011) which are based on quantum-chemical potential energy curves and transition moments of Wolniewicz and collaborators Wolniewicz and Staszewska (2003) and http://fizyka.umk. pl/ftp/pub/publicationsfifizfluwo. The overall agreement between experiment and theory is good. The branching ratios for the competing decay channels are also reproduced by the calculations including their substantial variations from level to level. A comparison of the vibronic interactions in the isotopomers Hy and Dy is made. (C) 2015 Elsevier Inc. All rights reserved.
Keywords
Absorption, Deuterium, Experiment, Line intensities, Pi(u) states, Theory, VUV
