Effect of an Axial Magnetic Field on the Performance of a Quadrupole Mass Spectrometer

被引：9
作者：
Syed, Sarfaraz U. [1 ]
Sreekumar, Jeyan [1 ]
Brkic, Boris [1 ]
Gibson, John R. [1 ]
Taylor, Stephen [1 ]
机构：
[1] Univ Liverpool, Dept Elect Engn & Elect, Liverpool L69 3GJ, Merseyside, England
来源：
JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY | 2010年 / 21卷 / 12期
关键词：
ION TRAJECTORIES; FILTER; SIMULATION; TRANSMISSION; RESOLUTION; HARMONICS;
D O I：
10.1016/j.jasms.2010.08.020
中图分类号：
Q5 [生物化学];
学科分类号：
071010 ; 081704 ;
摘要：
We consider the case of a quadrupole mass spectrometer (QMS) in which a static magnetic field is applied axially in the z-direction along the length of the mass filter The theoretical approach assumed in the model is that the QMS contains hyperbolic rods as electrodes and that the magnetic field acts over the full length of the mass filter assembly Initial experimental results with argon and helium for a low-resolution instrument confirm the predicted theoretical trends The analysis also predicts for which values of operating parameters an enhancement of the instrument resolution is achieved when an axial magnetic field is applied The model predicts instrument resolution R >3000 for a QMS with a 200 mm long mass filter via application of an axial magnetic field (J Am Soc Mass Spectrom 2010, 21, 2070-2076) (C) 2010 Published by Elsevier Inc on behalf of American Society for Mass Spectrometry
引用
收藏
页码：2070 / 2076
页数：7
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