应用激光, 2019, 39 (6): 1061, 网络出版: 2020-03-10  

可谐调红外激光在团簇离子研究中的应用

Application of Tunable Infrared Laser in Cluster Ion Research
作者单位
1 上海市激光技术研究所, 上海200233
2 重庆大学, 重庆401331
3 复旦大学, 上海 200433
摘要
红外预解离光谱仪用于单一气相离子性质的检测, 其相比普通的红外光谱仪灵敏度更高, 波数范围更广, 配合飞行时间质谱, 对于气相团簇离子振动信息的研究具有重要的实验价值。本文要介绍的仪器装置的主要用途是由离子源产生团簇离子, 并通过飞行时间质谱和红外预解离光谱数据对离子振动结构进行检测。团簇离子由离子源产生并经过双场加速和质量选择和单场减速得到目标离子, 经过红外预解离激光照射解离, 再由双场加速得到第二次飞行时间质谱, 通过不同波数的质谱解离信息最终得到红外预解离光谱。本论文的主要内容是对这套仪器装置中的可谐调红外激光进行介绍, 对于仪器装置中用到的激光将会从仪器的整体配置及各部分装置的目的、原理、性能、实验参数设置等方面进行详细地介绍。
Abstract
Infrared dissociation spectrometer is used to detect the properties of single gas-phase ions. It has higher sensitivity and wider wave number range than ordinary infrared spectrometer. It has important experimental value for the study of vibration information of gas-phase cluster ions in combination with time-of-flight mass spectrometry. The main purpose of this instrument is to produce cluster ions by ion source, and detect the ion vibration structure by time of flight mass spectrometry and infrared dissociation spectrum data. Cluster ions are generated by ion source, and the target ions are obtained by double field acceleration, mass selection and single field deceleration. The target ions are obtained by infrared dissociation laser irradiation, and then the second time of flight mass spectrum is obtained by double field acceleration. Finally, the infrared dissociation spectrum is obtained by mass spectrum dissociation information of different wave numbers. The main content of this paper is to introduce the tunable infrared laser in this instrument. The laser used in the instrument will be introduced in detail from the overall configuration of the instrument and the purpose, principle, performance, experimental parameter setting of each part of the device.

王彩霞, 王亮, 王冠军. 可谐调红外激光在团簇离子研究中的应用[J]. 应用激光, 2019, 39(6): 1061. Wang Caixia, Wang Liang, Wang Guanjun. Application of Tunable Infrared Laser in Cluster Ion Research[J]. APPLIED LASER, 2019, 39(6): 1061.

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