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arXiv · 1501.00896

Visible line intensities of the triatomic hydrogen ion from experiment and theory

Annemieke Petrignani·Max H. Berg·Florian Grussie·Andreas Wolf·Irina I. Mizus·Oleg L. Polyansky·Jonathan Tennyson·Nikolai F. Zobov·Michele Pavanello·Ludwik Adamowicz
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Abstract

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.

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Annemieke Petrignani, Max H. Berg, Florian Grussie, Andreas Wolf, Irina I. Mizus, Oleg L. Polyansky, Jonathan Tennyson, Nikolai F. Zobov, Michele Pavanello, Ludwik Adamowicz. 2015-01-05. Visible line intensities of the triatomic hydrogen ion from experiment and theory. https://doi.org/10.1063/1.4904440

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