Ei/Ci Ion Volume - Thermo Scientific ISQ 7000 Hardware Manual

EI/CI Ion Volume

Figure 446. EI/CI Ion Source Cartridge Components
Ion Volume
Locking Ring
Repeller Spring
Figure 447. Ion Volumes Available for the ISQ 7000 Mass Spectrometer
EI Ion Volume
Thermo Scientific
If you want to acquire data in both EI and CI modes, the EI/CI Ion volume allows you to do
this. The performance will be lower with the combined ion volume than with the dedicated
EI or CI ion volumes, in EI and positive CI modes. Tune the instrument with the dedicated
ion volumes before using the combined ion volume. In some cases, negative CI performance
is enhanced with the combined EI/CI ion volume and tuning is possible in negative CI mode.
The EI/CI ion volume has two small electron holes. To install a combination EI/CI ion
volume, follow the steps in the
IMPORTANT Always wear clean, lint-free gloves when handling the ion source cartridge.
Ion
Volume-Repeller
Insulator
Repeller
Repeller Nut
CI Ion Volume
Ion Source Cartridge section of this manual.
Ion Volume Lens 2
Lens 1
4
Upgrade Equipment
Ion Cartridge
Sleeve
Lens 3/RF Lens
EI/CI Ion Volume
ISQ 7000 Hardware Manual
EI/CI Ion Volume
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