Interactions of the 3pπucΠu1(v=2) Rydberg-complex member in isotopic N2

Autor:	C.A. de Lange, Wim Ubachs, T.I. Ivanov, Brenton Lewis, M.O. Vieitez, G. Stark, A. N. Heays
Rok vydání:	2008
Předmět:	Valence (chemistry) Chemistry Analytical chemistry General Physics and Astronomy Photoionization Isotopomers Photoexcitation symbols.namesake Atomic electron transition Kinetic isotope effect Rydberg formula symbols Physical and Theoretical Chemistry Atomic physics Spectroscopy
Zdroj:	The Journal of Chemical Physics. 128:134313
ISSN:	1089-7690 0021-9606
DOI:	10.1063/1.2883955
Popis:	The 3ppi u c1Pi u-X 1Sigmag+(2,0) Rydberg and b' 1Sigmau+-X 1Sigmag+(7,0) valence transitions of 14N2, 14N15N, and 15N2 are studied using laser-based 1 extreme ultraviolet (XUV)+1' UV two-photon-ionization spectroscopy, supplemented by synchrotron-based hotoabsorption measurements in the case of 14N2. For each isotopomer, effective rotational interactions between the c(v=2) and b'(v=7) levels are found to cause strong Lambda-doubling in c(v=2) and dramatic P/R-branch intensity anomalies in the b'-X(7,0) band due to the effects of quantum interference. Local perturbations in energy and predissociation line width for the c(v=2) Rydberg level are observed and attributed to a spin-orbit interaction with the crossing, short-lived C 3Pi u(v=17) valence level.
Databáze:	OpenAIRE
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