Ion gate control method for simultaneously screening and compressing multiple ions

• Main Authors: CHEN CHUANG, JIANG DANDAN, YANG QIMU, LI HAIYANG, XU YIQIAN
• Format: Patent
• Language: Chinese; English
• Published: 14.05.2024
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS; ELECTRICITY

The invention discloses a pulse voltage waveform applied to a TP type ion gate, and the pulse voltage waveform periodically controls the ion gate to undergo eight stages, so that ions with various mobility in an ionization region can be screened and compressed at the same time. In one period, a second ion gate of the ion-molecule reaction selective control measuring device is opened within a specific delay time, and reagent ions with corresponding mobility can be screened to enter a second ionization region; by opening and closing the second ion gate for many times, a plurality of reagent ions with mobility corresponding to the second ion gate can be screened to enter the ionization region to carry out the next ion-molecule reaction, so that the analysis of the ion-molecule reaction mechanism in the ionization source under atmospheric pressure and sub-atmospheric pressure is more favorably realized. 本发明公开了一种施加在TP型离子门上的脉冲电压波形，周期性地控制离子门经历八个阶段的电压波形，可以对电离区中的多种迁移率的离子进行同时筛选并压缩。在一次周期内，通过对离子-分子反应选控测量装置的第二离子门在特定的延迟时间内