High-resolution spectroscopy of the ?3 antisymmetric C-H stretch of C2H2+ using leak-out action spectroscopy

被引：5
作者：
Schlemmer, Stephan [1 ]
Plaar, Eline [1 ]
Gupta, Divita [1 ]
Silva, Weslley G. D. P. [1 ]
Salomon, Thomas [1 ]
Asvany, Oskar [1 ,2 ]
机构：
[1] Univ Cologne, Phys Inst 1, Cologne, Germany
[2] Univ Cologne, Phys Inst 1, Zulpicher Str 77, D-50937 Cologne, Germany
来源：
MOLECULAR PHYSICS | 2024年 / 122卷 / 1-2期
基金：
欧洲研究理事会;
关键词：
Ion traps; rovibrational spectroscopy; action spectroscopy; carbocations; lambda doubling; INFRARED-SPECTROSCOPY; CARBO-IONS; VIBRATION; SPECTRUM; TRAP; BAND;
D O I：
10.1080/00268976.2023.2241567
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The antisymmetric C-H stretching vibration v(3) ((2)? ? (2)?) of ionised acetylene, C2H2+, 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 ?-doubling components of this open-shell molecule are mostly well resolved, leading to a slight refinement of the spectroscopic parameters.
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页数：7
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