Ion shutter, method for controlling ion shutter, and detection method and device

• Main Authors: CLARK ALASTAIR, ATKINSON JONATHAN, ARNOLD PETRA, HUMPHRIES ERIC
• Format: Patent
• Language: Chinese; English
• Published: 10.03.2023
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

A method of operating an ion mobility spectrometer, comprising the steps of: introducing a gaseous fluid sample into a reaction zone of the ion mobility spectrometer; providing a first pulse of a pulsed ionization source to ionize the gaseous fluid sample, thereby obtaining first sample ions; allowing a portion of the first sample ions to exit the reaction zone after a first gate delay immediately after the first trigger opens an ion shutter; providing a second pulse of the pulsed ionization source to further ionize the gaseous fluid sample, thereby obtaining second sample ions; a portion of the second sample ions is allowed to exit the reaction zone after a second gate delay immediately after the first trigger opens the ion shutter, where the second gate delay is different than the first gate delay. 一种操作离子迁移光谱仪的方法，包括以下步骤：将气态流体样本引入所述离子迁移光谱仪的反应区；提供脉冲式电离源的第一脉冲以电离气态流体样本，由此获得第一样本离子；在紧接着所述第一触发器打开离子快门的第一门延迟之后，允许所述第一样本离子的部分离开所述反应区；提供所述脉冲式电离源的第二脉冲以进一步电离所述气态流体样本，由此获得第二样本离子；在紧接着所述第一触发器打开所述离子快门的第二门延迟之后，允许所述第二样本离子的部分离开所述