公开(公告)号：US06541769B1

公开(公告)日：2003-04-01

申请号：US09660359

申请日：2000-09-12

申请人： Yasuaki Takada ,  Yasushi Terui ,  Kiyomi Yoshinari ,  Takayuki Nabeshima ,  Minoru Sakairi

发明人： Yasuaki Takada ,  Yasushi Terui ,  Kiyomi Yoshinari ,  Takayuki Nabeshima ,  Minoru Sakairi

IPC分类号： B01D5944

CPC分类号： H01J49/424 ,  H01J49/061

摘要： An ion-deflecting device is located between a mass spectrometer and a detector, and undesired signal sources are prevented from reaching the detector during the ion-trapping period by switching the voltage applied to the detector between the ion-trapping period and the mass-analyzing period. A first voltage is applied to the detector during an ion-trapping period while a second voltage is applied to the detector during a mass-analyzing period. An ion-deflecting device deflects ions such that they do not reach the detector during an ion-trapping period while they do reach the detector during a mass-analyzing period. This way, the life of the detector is increased.

摘要翻译： 离子偏转装置位于质谱仪和检测器之间，并且在离子捕获期间通过切换在离子捕获期和质量分析之间施加到检测器的电压来防止不期望的信号源到达检测器 期。 在离子捕获期间将第一电压施加到检测器，同时在质量分析期间将第二电压施加到检测器。 离子偏转装置使离子偏转，使得它们在离子捕获期间不会在质量分析期间到达检测器时到达检测器。 这样，检测器的寿命就会增加。

公开(公告)号：US5623144A

公开(公告)日：1997-04-22

申请号：US598890

申请日：1996-02-09

申请人： Kiyomi Yoshinari ,  Yoichi Ose ,  Yoshiaki Kato

发明人： Kiyomi Yoshinari ,  Yoichi Ose ,  Yoshiaki Kato

IPC分类号： H01J49/42

CPC分类号： H01J49/424 ,  H01J49/427

摘要： A mass spectrometer and a mass spectrometry method having a high ion selection efficiency are provided. The mass spectrometer comprises an ion trap, a sample introducing device, an electron gun, a detector, a power supply for applying voltage to the ion trap, a control device for controlling the power supply and the electron gun, a mass analyzing device for performing mass spectrometry based on a detected signal of the detector. Using an auxiliary power supply, direction of an auxiliary electric field generated between end cap electrodes is made to point only toward the detector. In this occasion, by setting the cycle of the auxiliary voltage near the oscillation cycle of interest ion species in the axial direction, the interest ion species are synchronized with the auxiliary electric field to be certainly unstabilized in the detector side.

摘要翻译： 提供了具有高离子选择效率的质谱仪和质谱法。 质谱仪包括离子阱，样品引入装置，电子枪，检测器，用于向离子阱施加电压的电源，用于控制电源和电子枪的控制装置，用于执行的质量分析装置 基于检测器的检测信号的质谱。 使用辅助电源，使端帽电极之间产生的辅助电场的方向仅指向检测器。 在这种情况下，通过将辅助电压的周期设定在轴向的兴趣离子种类的振荡周期附近，兴趣离子种类与辅助电场同步，在检测器侧肯定不稳定。