التفاصيل البيبلوغرافية
| العنوان: |
Observations of the high vibrational levels of the B''B ¹Σu+ state of H2. |
| المؤلفون: |
Chartrand, A. M., Duan, W., Ekey, R. C., McCormack, E. F. |
| المصدر: |
Journal of Chemical Physics; 2016, Vol. 144 Issue 1, p1-6, 6p, 1 Chart, 10 Graphs |
| مصطلحات موضوعية: |
LASER spectroscopy, VIBRATIONAL transitions (Molecular physics), RESONANCE effect, HYDROGEN molecular ion clusters, VIBRATIONAL redistribution (Molecular physics) |
| مستخلص: |
Double-resonance laser spectroscopy via the EF ¹Σg+ ν' = 6, J' = 0-2 state was used to probe the high vibrational levels of the B"B ¹Σu+ state of molecular hydrogen. Resonantly enhanced multiphoton ionization spectra were recorded by detecting ion production as a function of energy using a time of flight mass spectrometer. New measurements of energies for the ν = 51-66 levels for the B"B state of H2 are reported, which, taken with previous results, span the ν = 46-69 vibrational levels. Results for energy levels are compared to theoretical close-coupled calculations [L. Wolniewicz, T. Orlikowski, and G. Staszewska, J. Mol. Spectrosc. 238, 118-126 (2006)]. The average difference between the 84 measured energies and calculated energies is -3.8 cm-1 with a standard deviation of 5.3 cm-1. This level of agreement showcases the success of the theoretical calculations in accounting for the strong rovibronic mixing of the ¹Σu+ and ¹πu+ states. Due to the ion-pair character of the outer well, the observed energies of the vibrational levels below the third dissociation limit smoothly connect with previously observed energies of ion-pair states above this limit. The results provide an opportunity for testing a heavy Rydberg multi-channel quantum defect analysis of the high vibrational states below the third dissociation limit. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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