High-resolution spectroscopy of the ν3 antisymmetric C–H stretch of C2H2+ using leak-out action spectroscopy
Molecular Physics, 2024•Taylor & Francis
The antisymmetric C–H stretching vibration ν 3 (2 Π← 2 Π) of ionised acetylene, C 2 H 2+,
has been revisited using a cryogenic 22-pole ion trap machine. Two action spectroscopic
techniques, the novel leak-out spectroscopy (LOS) method and the more established laser-
induced reactions (LIR) method, are applied and compared. Mass selectivity and cryogenic
temperatures down to 4 K enabled the observation of uncontaminated spectra in which the Λ-
doubling components of this open-shell molecule are mostly well resolved, leading to a …
has been revisited using a cryogenic 22-pole ion trap machine. Two action spectroscopic
techniques, the novel leak-out spectroscopy (LOS) method and the more established laser-
induced reactions (LIR) method, are applied and compared. Mass selectivity and cryogenic
temperatures down to 4 K enabled the observation of uncontaminated spectra in which the Λ-
doubling components of this open-shell molecule are mostly well resolved, leading to a …
The antisymmetric C–H stretching vibration () of ionised acetylene, , has been revisited using a cryogenic 22-pole ion trap machine. Two action spectroscopic techniques, the novel leak-out spectroscopy (LOS) method and the more established laser-induced reactions (LIR) method, are applied and compared. Mass selectivity and cryogenic temperatures down to 4 K enabled the observation of uncontaminated spectra in which the Λ-doubling components of this open-shell molecule are mostly well resolved, leading to a slight refinement of the spectroscopic parameters.
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