Patent ID: 9129788
Filing Date: 2015-09-08
Classification: H01J

Abstract:
1. A Fourier transform ion cyclotron resonance mass spectrometer comprising: a magnet forming a magnetic field in a first direction; an ion cyclotron resonance trap trapping target ions using the magnetic field in the first direction; an electron capture dissociation gun emitting electrons to a space in which the magnetic field is formed in the first direction; and a lens disposed between the electron capture dissociation gun and the ion cyclotron resonance trap, the lens configured to trap the electrons emitted from the electron capture dissociation gun, apply an electric field to the trapped electrons in a second direction perpendicular to the first direction so as to induce drifting motion of the electrons in the second direction, and emit the electrons toward the ion cyclotron resonance trap after applying the electric field to the trapped electrons, wherein the lens comprises: