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Multi-turn time-of-flight mass spectrometer
Multi-turn time-of-flight mass spectrometer
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机译：多圈飞行时间质谱仪
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摘要
PROBLEM TO BE SOLVED: To generate a mass spectrum of wide mass range and high precision that solves the problem of ion overtaking on a circulation orbit with less measurement frequencies as much as possible, relating to a multiple circulation time-of-flight mass spectrometer.;SOLUTION: Using a detector 8 in which micro detectors are arranged in two-dimension, deflection electrodes 71-74 are provided on an injection orbit through which an ion departed from a circulation orbit advances toward a detector 8. The deflection electrodes 71-74 are applied with a voltage which changes as time passes from the time point when a gate electrode is released to temporarily change an intensity of electric field. In a case two kinds of ions having different m/z reach the detector 8 at the same time because of circulation delay on the circulation orbit, the intensity of electric field that is received is different since the time, at which the two kinds of ions pass a deflection electric field, is different. Consequently the position to which ion reaches on a detection surface varies, and based on the displacement amount of reached position, a deflection electric field passing time for each ion is obtained. Thus, a flight speed of each ion is obtained, to allow estimation of approximate circulation frequency, and m/z is acquired from a flight time.;COPYRIGHT: (C)2012,JPO&INPIT
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机译：要解决的问题：产生宽质量范围和高精度的质谱图，以尽可能多的循环飞行时间质谱仪解决离子越过循环轨道的问题，并尽可能减少测量频率。 ;解决方案：使用其中二维地布置有微型检测器的检测器8，在注入轨道上设置偏转电极71-74，从循环轨道离开的离子通过该偏转电极前进到检测器8。偏转电极71-74从栅电极被释放的时间点起，随着时间的流逝，电压被施加到栅极线，以暂时改变电场强度。在m / z不同的两种离子由于循环轨道上的循环延迟而同时到达检测器8的情况下，两种时间以来所接收的电场强度不同。通过偏转电场，是不同的。因此，离子到达检测面上的位置发生变化，根据到达位置的位移量，求出各离子的偏转电场通过时间。因此，获得每个离子的飞行速度，以便估算近似的循环频率，并从飞行时间获取m / z 。;版权所有：（C）2012，JPO＆INPIT
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