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Functional Description
Mass Spectrometer
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TSQ Quantum XLS and TSQ Quantum GC User Guide
Thermo Scientific
Ion Optics
The ion optics focus the ions produced in the ion source and transmit them to the mass
analyzer. The ion optics includes the Q0 quadrupole and lenses L11 and L12.
The Q0 quadrupole is a square array of square-profile rods that acts as an ion transmission
device. See
. An rf voltage applied to the rods gives rise to an electric field that guides
the ions along the axis of the quadrupole. The Q0 offset voltage increases the translational
kinetic energy of ions emerging from the ion source.
Figure 17.
Q0 quadrupole
gives a cross-sectional view of the transfer line, ion source, and Q0 quadrupole.