Thermo Scientific iCAP Q, Руководство по эксплуатации

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System Description
Ion Optics
Thermo Fisher Scientific iCAP Q Operating Manual (P/N 1288090, Revision B) 3-9
Ion Optics
The ion optics region comprises the RAPID lens, the QCell, and the
DA assembly.
RAPID Lens
Ions extracted from the iCAP Q interface are accelerated to the RAPID
(Right Angle Positive Ion Deflection) lens which deflects analyte ions by
90 ° before they enter the QCell.
The RAPID lens ensures that neutral particles from the plasma pass
directly out of the lens without interacting with an active lens surface for
improved reliability and reduced maintenance.
QCell
Leaving the deflection device, the ions are focused onto the entry of the
collision cell (QCell). It consists of a quadrupole with flat rods (fpole) in
a semi-contained region, which keeps the ions close to the beam axis by
a RF guide field. The QCell can be pressurized (few 10
-2
mbar) with
helium or gas mixtures to remove undesirable molecule ions by chemical
reactions (CCT mode) or by kinetic energy discrimination (KED
mode).
NOTICE
CCT mode and KED mode are only available in the
instrument models iCAP Qc and iCAP Qs. ▲
Figure 3-10. QCell