A collinear tandem time-of-flight mass spectrometer for infrared photodissociation spectroscopy of mass-selected ions |
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| Authors: | GuanJun Wang ChaoXian Chi XiaoPeng Xing ChuanFan Ding MingFei Zhou |
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| Institution: | 1. Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials; Department of Chemistry, Fudan University, Shanghai, 200433, China
2. College of Materials Sciences and Opto-Electronic Technology, Graduate University of Chinese Academy of Sciences, Beijing, 100049, China
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| Abstract: | An apparatus based on collinear tandem time-of-flight mass spectrometer has been designed for the measurement of infrared photodissociation spectroscopy of mass-selected ions in the gas phase. The ions from a pulsed laser vaporization supersonic ion source are skimmed and mass separated by a Wiley-McLaren time-of-flight mass spectrometer. The ion of interest is mass selected, decelerated and dissociated by a tunable IR laser. The fragment and parent ions are reaccelerated and mass analyzed by the second time-of-flight mass spectrometer. A simple new assembly integrated with mass gate, deceleration and reacceleration ion optics was designed, which allows us to measure the infrared spectra of mass selected ions with high sensitivity and easy timing synchronization. |
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| Keywords: | infrared photodissociation spectroscopy time-of-flight mass spectrometer mass selection ion spectroscopy |
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