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

Journal Article · Sun Dec 28 00:00:00 EST 2014 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.4904440· OSTI ID:22415398

Petrignani, Annemieke; Berg, Max H.; Grussie, Florian; Wolf, Andreas ^[1]; Mizus, Irina I.; Zobov, Nikolai F. ^[2]; Polyansky, Oleg L. ^[2]; Tennyson, Jonathan ^[3]; Pavanello, Michele ^[4]; Adamowicz, Ludwik ^[5]

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1. Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg (Germany)
2. Institute of Applied Physics, Russian Academy of Science, Ulyanov Street 46, Nizhnii Novgorod 603950 (Russian Federation)
3. Department of Physics and Astronomy, University College London, London WC1E 6BT (United Kingdom)
4. Department of Chemistry, Rutgers University, Newark, New Jersey 07102 (United States)
5. Department of Chemistry and Biochemistry, The University of Arizona, Tucson, Arizona 85721 (United States)

The visible spectrum of H{sub 3}{sup +} 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 H{sub 3}{sup +} 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 H{sub 3}{sup +} and found to be in excellent agreement, even in the region where states have been classified as chaotic.

• OSTI ID: 22415398
• Journal Information: Journal of Chemical Physics, Vol. 141, Issue 24; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
CALIBRATION
CHAOS THEORY
DIPOLE MOMENTS
EXCITATION
HYDROGEN IONS 3 PLUS
RADIOWAVE RADIATION
ROTATIONAL STATES
SENSITIVITY
SURFACES
TRAPS
VIBRATIONAL STATES
VISIBLE SPECTRA