Electromagnetic Fields Quadrupole Q Analyzers

Interaction with electromagnetic fields quadrupole (Q) analyzers 

As the name indicates, quadrupole mass analyzers consist of four parallel rods just as indicated in Fig. 22. 

Quadrupole mass analyzers have several advantages such as no requirement for very high vacuum ( 10 Torr), and their relatively fast and simple operation for high-throughput analysis. Disadvantages include low transmittance, a low mIz cutoff, and low (generally unit) resolution. 

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