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Precision Measurements and Computations of Transition Energies in Rotationally Cold Triatomic Hydrogen Ions up to the Midvisible Spectral Range

MPS-Authors
http://pubman.mpdl.mpg.de/cone/persons/resource/persons30298

Berg,  Max
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons30890

Petrignani,  Annemieke
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons31190

Wolf,  Andreas
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Citation

Pavanello, M., Adamowicz, L., Alijah, A., Zobov, N. F., Mizus, I. I., Polyansky, O. L., et al. (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, pp. 1-5. doi:10.1103/PhysRevLett.108.023002.


Cite as: http://hdl.handle.net/11858/00-001M-0000-000F-4510-9
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 0.1  cm-1 level up to 16 600  cm-1.