High-Resolution IR Action Spectrum of C_2H_2^+

Details High-Resolution IR Action Spectrum of C_2H_2^+ High-Resolution IR Action Spectrum of C_2H_2^+

Jun 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011mss..confemi13g&link_type=abstract

"International Symposium On Molecular Spectroscopy, 66th Meeting, Held 20-24 June, 2011 at Ohio State University. http://molspec

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The method of Laser-Induced-Reactions (LIR), which is described in detail in Schlemmer et al. 2002, is used to obtain high-resolution infrared spectra of molecular ions.
Here, the endothermic reaction C_2H_2^+ + H_2 → C_2H_3^+ + H is promoted by ro-vibrational excitation of the parent ion. A spectrum of the ν_3 stretching vibration of C_2H_2^+ is recorded by variation of the wavelength of a home-build OPO (Optical Parametric Oscillator) operating in the 3 micron region.
The experiments are carried out in a low temperature 22-pole ion trap where several hundred cold, mass selected parent ions are stored. Typical linewidths of the action spectra are 3 × 10-3 Cm-1. First spectra for C_2H_2^+ and their analysis will be presented. Other possible applications of LIR spectroscopy will be discussed.
S. Schlemmer, E. Lescop, J. von Richthofen, D. Gerlich, and M. Smith, Laser Induced Reactions in a 22-Pole Ion Trap: C_2H_2^+ + H_2 → C_2H_3^+ + H, J. Chem. Phys. 117 (2068-2075), 2002

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