公开(公告)号：US06777673B2

公开(公告)日：2004-08-17

申请号：US10034459

申请日：2001-12-28

Applicant: Huan-Cheng Chang ,  Wen-Ping Peng ,  Yong Cai ,  Shan-Jen Kuo

Inventor： Huan-Cheng Chang ,  Wen-Ping Peng ,  Yong Cai ,  Shan-Jen Kuo

IPC: B01D5444

CPC classification number: H01J49/424 ,  G01N15/1459 ,  G01N15/1463 ,  H01J49/0404 ,  H01J49/165

Abstract: A mass spectrometer that includes an ion source, an ion trap, and a light detection module. The ion trap has two end-cap electrodes and a ring electrode. The ring electrode is positioned relative to the end-cap electrodes to confine a charged particle from the ion source within a confinement region when an audio frequency voltage having a first amplitude is applied between the ring electrode and the two end-cap electrodes. The charged particle is ejected from the ion trap when the audio frequency voltage increases to a second amplitude. The light detection module includes a light source that illuminates the ejected particle and a light detector that detects light scattered from the ejected particle.

Abstract translation: 一种包括离子源，离子阱和光检测模块的质谱仪。 离子阱具有两个端盖电极和环形电极。 当在环形电极和两个端盖电极之间施加具有第一幅度的音频电压时，环形电极相对于端帽电极定位，以将来自离子源的带电粒子限制在约束区域内。 当音频电压增加到第二幅度时，带电粒子从离子阱中排出。 光检测模块包括照射喷射的颗粒的光源和检测从喷出的颗粒散射的光的光检测器。