ION GUIDE DEVICE, ION REACTOR, AND MASS ANALYZER

摘要

This invention relates to a sequence structure analysis of a biopolymer using a mass analysis method. A time of not less than 10 msec is necessary for a charged particle reaction, and this poses a problem that coupling with a high speed analysis part such as a quadrupole mass filter causes a lowering in throughput or mass separation capability. Accordingly, a charge particle reaction, which can be coupled with the high speed analysis part, should be carried out while regulating an ion residence time to ensure the reaction time. A charged particle reaction cell comprising a plurality of ring electrodes (1) placed side by side is provided. A modulated high frequency voltage obtained by modulating the amplitude of a high frequency voltage is applied. In this case, ions are captured on the bottom of ups and downs of the formed pseudo potential, and the movement thereof causes ion migration. In the charged particle reaction cell, the time necessary for the charged particle reaction can be ensured. Further, the problem of lowered throughput and mass separation capability can be solved, and, thus, the speed of the structure analysis of a measurement sample can be accelerated.