Precision measurements and computations of transition energies in rotationally cold triatomic hydrogen ions up to the midvisible spectral range

Michele Pavanello, Ludwik Adamowicz, Alexander Alijah, Nikolai F. Zobov, Irina I. Mizus, Oleg L. Polyansky, Jonathan Tennyson, Tamás Szidarovszky, Attila G. Császár, Max Berg, Annemieke Petrignani, Andreas Wolf

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Abstract

First-principles computations and experimental measurements of transition energies are carried out for vibrational overtone lines of the triatomic hydrogen ion H3+ corresponding to floppy vibrations high above the barrier to linearity. Action spectroscopy is improved to detect extremely weak visible-light spectral lines on cold trapped H3+ ions. A highly accurate potential surface is obtained from variational calculations using explicitly correlated Gaussian wave function expansions. After nonadiabatic corrections, the floppy H3+ vibrational spectrum is reproduced at the 0.1cm -1 level up to 16600cm -1.

Original languageEnglish
Article number023002
JournalPhysical review letters
Volume108
Issue number2
DOIs
Publication statusPublished - Jan 11 2012

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Pavanello, M., Adamowicz, L., Alijah, A., Zobov, N. F., Mizus, I. I., Polyansky, O. L., Tennyson, J., Szidarovszky, T., Császár, A. G., Berg, M., Petrignani, A., & Wolf, A. (2012). Precision measurements and computations of transition energies in rotationally cold triatomic hydrogen ions up to the midvisible spectral range. Physical review letters, 108(2), [023002]. https://doi.org/10.1103/PhysRevLett.108.023002