Communication: 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

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

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. 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.

Original languageEnglish (US)
Article number241104
JournalJournal of Chemical Physics
Volume141
Issue number24
DOIs
StatePublished - Dec 28 2014

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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