Communication: Visible line intensities of the triatomic hydrogen ion from experiment and theory
| Autor: | Max H. Berg, Florian Grussie, Ludwik Adamowicz, Oleg L. Polyansky, Jonathan Tennyson, Annemieke Petrignani, Nikolai F. Zobov, Andreas Wolf, Michele Pavanello, Irina I. Mizus |
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| Rok vydání: | 2015 |
| Předmět: |
Physics
Infrared Ab initio General Physics and Astronomy Quantendynamik - Abteilung Blaum Triatomic hydrogen 01 natural sciences 7. Clean energy Dipole 0103 physical sciences Physical and Theoretical Chemistry Atomic physics 010306 general physics Spectroscopy Multipole expansion 010303 astronomy & astrophysics Line (formation) Visible spectrum |
| Zdroj: | The Journal of Chemical Physics |
| ISSN: | 1089-7690 |
| Popis: | The visible spectrum of H3+ is studied using high-sensitivity action spectroscopy in a cryogenic radiofrequency multipole trap. Advances are made to measure the weak ro-vibrational transitions from the lowest rotational states of H3+ up to high excitation energies providing visible line intensities and, after normalisation to an infrared calibration line, the corresponding Einstein $B$ coefficients. {\it Ab initio} predictions for the Einstein $B$ coefficients are obtained from a highly precise dipole moment surface of H3+ and found to be in excellent agreement, even in the region where states have been classified as chaotic. |
| Databáze: | OpenAIRE |
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