Spectroscopic signatures of HHe2+ and HHe3+
| Autor: | Attila G. Császár, Oskar Asvany, Keigo Nagamori, Tamás Szidarovszky, Hiroshi Kohguchi, Anders Jensen, Matthias Töpfer, Stephan Schlemmer |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Proton General Physics and Astronomy Linear molecular geometry 02 engineering and technology Rotational–vibrational spectroscopy Electron 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Molecular physics 0104 chemical sciences law.invention law Excited state Ion trap Physical and Theoretical Chemistry 0210 nano-technology Quantum cascade laser Spectroscopy |
| Zdroj: | Physical Chemistry Chemical Physics. 22:22885-22888 |
| ISSN: | 1463-9084 1463-9076 |
| DOI: | 10.1039/d0cp04649c |
| Popis: | Using two different action spectroscopic techniques, a high-resolution quantum cascade laser operating around 1300 cm−1 and a cryogenic ion trap machine, the proton shuttle motion of the cations HHe2+ and HHe3+ has been probed at a nominal temperature of 4 K. For HHe3+, the loosely bound character of this complex allowed predissociation spectroscopy to be used, and the observed broad features point to a lifetime of a few ps in the vibrationally excited state. For He–H+–He, a fundamental linear molecule consisting of only three nuclei and four electrons, the method of laser-induced inhibition of complex growth (LIICG) enabled the measurement of three accurate rovibrational transitions, pinning down its molecular parameters for the first time. |
| Databáze: | OpenAIRE |
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