Theoretical Design of Ion Optics for Effective Ion Detection in Single Particle Mass Spectrometer

단일 입자 질량분석기의 효과적인 이온검출을 위한 이온계의 이론적인 설계

  • 조성우 (부산대학교 대학원 기계공학과) ;
  • 이동근 (부산대학교 기계공학부)
  • Published : 2006.07.01


Recently, we reported that significant ion loss occurred prior to its detection in the conventional single particles mass spectrometry and more seriously the loss is ion-kinetic-energy-dependent. These lead to significant error in the measured chemical composition of nanoparticles. Here we attempted to design a novel ion optics that is capable of 100% detection of ions generated from single nanoparticle. Using a commercial software SIMION, we simulated the trajectories of ions launched at different speeds inside the previous single particle mass spectrometer We tested how affect changes in shape of repelling plate, adding Einzel lens, substitution of tube electrode between extraction and acceleration grids. As a results, we could find a best design by assembling the trials in the present condition.



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