Single-particle mass spectrometer,申请号US20060377364-传众专利搜索

Single-particle mass spectrometer

申请公布号：US2006214103(A1)

申请号：US20060377364

申请日期：2006.03.17

申请公布日期：2006.09.28

申请人：

PUSAN NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATION OF PUSAN

发明人：LEE DONG-GEUN;CHO SEONG-WOO

分类号：B01D59/44;H01J49/00

主分类号：B01D59/44

摘要：Disclosed is a single-particle mass spectrometer, which includes a chamber keeping an inside in a vacuum state by a vacuum pump, a cylindrical flying tube installed to communicate with the chamber, an aerodynamic lens installed to the chamber to focus aerosol particles input from outside, a laser generating means for irradiating a laser beam to the particles focused by the aerodynamic lens to emit ions, an extraction acceleration means for extracting the emitted ions and accelerating the ions to fly along the flying tube, and an ion detector installed to an end of the flying tube to detect the ions flying along the flying tube. The extraction acceleration means includes a reflector made of a conductive material with a semispherical shape and to which a relatively high voltage is applied; at least one mesh-shaped grid arranged from the reflector toward the ion detector at regular intervals, and to which a relatively low voltage is applied in comparison to the reflector; a cylindrical electrode; and an Einzel lens. Thus, the ions are biased due to a voltage difference between the reflector and the grid to fly toward the ion detector along the flying tube, and also refracted toward a central axis of the flying tube by means of the cylindrical electrode and the Einzel lens.