Symmetry of the dissociation of hydrogen: angular dependence of the doppler profile of the excited hydrogen atom (n = 4) produced in e-H2 collisions |
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| Affiliation: | 1. Shanxi Engineering Research Center of Precision Measurement and Online Detection Equipment and School of Applied Science, Taiyuan University of Science and Technology, Taiyuan 030024, China;2. Miskolc-Egyetemváros A/2, Institute of Chemistry, University of Miskolc, Miskolc H-3515, Hungary;3. Ferenc Rakoczi II Transcarpathian Hungarian College of Higher Education, Beregszász, Transcarpathia 90200, Ukraine;4. Université Lille, CNRS, UMR 8522 - PC2A - Physicochimie des Processus de Combustion et de l''Atmosphère, Lille F-59000, France;5. Groupe de Spectrometrie Mol´eculaire et Atmospherique, UMR CNRS 7331, University of Reims Champagne-Ardenne, Reims Cedex 2 F-51687, France |
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| Abstract: | The angular dependence of the Doppler profile of the Balmer-β line indicates that the asymmetry parameter, b, is positive and the polarization of the electric vector, Jp, is 0.7 ± 0.1 for the formation of H1(n=4) from H2. Thus, H1(n=4) is produced in a parallel transition, and the transition moment of H1 lies along the dissociation axis. This result suggests that the intermediate states for the fast and anisotropic H1(n=4) atoms should be of the type 1Σ+u(2pσu)(n/σg). |
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