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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