Rotational and hyperfine structure in the yellow system of CuF
| Autor: | Christopher R. Brazier, Timothy C. Steimle, John M. Brown |
|---|---|
| Rok vydání: | 1982 |
| Předmět: |
Physics
Excited electronic state Monofluoride Resolution (electron density) chemistry.chemical_element State (functional analysis) Fluorescence Copper Atomic and Molecular Physics and Optics chemistry.chemical_compound chemistry Excited state Physical and Theoretical Chemistry Atomic physics Hyperfine structure Spectroscopy |
| Zdroj: | Journal of Molecular Spectroscopy. 91:137-149 |
| ISSN: | 0022-2852 |
| DOI: | 10.1016/0022-2852(82)90037-6 |
| Popis: | Previous spectroscopic studies of copper monofluoride have suggested that the excited electronic state involved in the yellow system is either 3 Σ − or a ( 1 Π, 1 Σ) “ p -complex”. A Doppler-limited (HWHM ⋍ 0.4 GHz), laser-induced fluorescence study of the (0, 0) band of the 63 Cu 19 F isotopic species was performed in order to make a more definite assignment of the upper state. As a result of increased resolution, many of the rotational lines appear as partially resolved quartets resulting from the 63 Cu ( I = 3 2 ) nuclear hyperfine splitting. It was not possible on the evidence available to decide between the alternative assignments for the upper state. Assuming a 3 Σ − state, 200 features were assigned, measured, and fitted by a least-squares procedure to determine values for the parameters (cm −1 ) of CuF in the excited state: T 0 = 17 574.9663(12), λ 0 = − 27.7149(11), λ D 0 = 0.001161(1), B 0 = 0.375035(2), 10 6 D 0 = 0.510(1), γ 0 = 0.01074(6), b F ( 63 Cu ) = 0.032(2) , c( 63 Cu ) = −0.039(7) . The 63 Cu hyperfine parameters are interpreted in terms of possible electronic models of CuF in the A state. |
| Databáze: | OpenAIRE |
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