Patent ID: 8927943
Filing Date: 2015-01-06
Classification: H01J

Abstract:
1. A device for acquiring an ion source of a mass analyzer, the device comprising: an ultraviolet (UV) diode emitting UV, a quantity of the UV being adjusted by an emission time and intensity of the UV; an electron multiplier (EM) module in which UV photons emitted from the UV diode induces an initial electron emission, amplifies electrons emitted by the initial electron emission and obtains a large quantity of electron beam at an outlet thereof; an electron beam focusing lens focusing the large quantity of electron beam amplified through the EM module; an ion trap mass separator ionizing gaseous molecules to produce ions using the large quantity of electron beam injected through the electron beam focusing lens; and an ion detector detecting the ions produced by the ion trap mass separator based on a mass spectrum; a first insulator disposed in an inlet side of the EM module for applying a first negative voltage to the inlet side; and a second insulator disposed in an outlet side of the EM module for applying a second negative voltage to the outlet side, the second insulator being separated from the first insulator, wherein the first negative voltage is in a range of −500 V to −2500 V, and the second negative voltage is in a range of −10 V to −500 V.