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TN 3005A Practical Quadrupole Theory: Pre-filters
An examination of the theoretical basis and practical inplications of the use of pre-filters coupled to analytical quadrupoles to improve transmission and abundance sensitivity. Calculated ion trajectories are used to illustrate ion motion, and calculated phase space acceptance ellipses are used to interpret experimental results. The goal of this work is to help build an intuitive understanding of how quadrupoles work, and more importantly, how to optimize the design of experiments involving quadrupoles.