公开(公告)号：US11087966B1

公开(公告)日：2021-08-10

申请号：US17052465

申请日：2020-05-26

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Hongbin Ding ,  Yuanjie Hao ,  Ding Wu ,  Chunlei Feng ,  Cong Li ,  Ran Hai

IPC: H01J49/24 ,  H01J49/16 ,  H01J49/40

Abstract: A mass spectrum resolution device for measuring laser ablation ion species with improved time of flight mass spectrometry includes a vacuum system unit, a plasma production unit, and a particle restraint selection and separation unit, wherein the particle restraint selection and separation unit comprises a particle limit selector and a plurality of ion pulse accelerated electrode plates; the particle limit selector comprises a restrainer lifting block, a restrainer and a restrainer selection baffle; a through hole is formed in the restrainer lifting block; a plurality of circular holes with different apertures are formed in the restrainer selection baffle, and the restrainer and the restrainer selection baffle are arranged in the restrainer lifting block and can move; and the ion pulse accelerated electrode plates are arranged in the advance direction of particles and are axially parallel to the restrainer lifting block.