|
|||||
|
|
Analysis of bound-free fluorescence and improved characterization of the electronic and spectroscopic properties of the 11Σ u + state of Cl2 |
|
| Authors: | J Wörmer T Möller J Stapelfeldt G Zimmerer D Haaks S Kampf J Le Calvé M C Castex |
| Institution: | 1. II. Institut für Experimentalphysik, Universit?t Hamburg, Luruper Chaussee 149, D-2000, Hamburg 50, Federal Republic of Germany 2. FB Physikalische Chemie, Universit?t GHS Wuppertal, Gau?str. 20, D-5600, Wuppertal 1, Federal Republic of Germany 4. Départment de Physico-Chimie, Centre d'Etudes Nucléaires de Saclay, IRDI, DESICP, F-91191, Gif-sur-Yvette, France 5. Laboratoire des Interactions Moléculaires et des Hautes Pressions du C.N.R.S., Centre Universitaire Paris-Nord, Avenue Jean Baptiste Clément, F-93430, Villetaneuse, France |
| Abstract: | Synchrotron radiation is used to selectively excite the chlorine molecule in the VUV spectral range. Stationary fluorescence spectra of the 11Σ u + state are observed following primary excitation of 11Σ u + and 21Σ u + . The bound-free part of the spectra is analysed with the aid of quantum mechanical computer simulations. A potential energy curve is constructed which is an approximation of the adiabatic double well potential energy curve of the 11Σ u + state. The inner well is characterized byT e =(73428±50) cm?1,r e =(1.85 ± 0.05) Å; for the outer well holdT e =(64631±50) cm?1,r e =(2.57±0.05) Å, ω e =(261±5) cm?1, ω e x e =(0.668±0.01) cm?1 (35Cl2;v′<30). The potential energy curve is successfully checked with fluorescence excitation spectra. Within the error limits, the results of a former synchrotron radiation study are verified. It is ruled out, that the Cl2 “γ-state” recently observed with laser spectroscopic methods, can be attributed to the outer well of 11Σ u + . |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ | |