Table of Contents
Advertisement
Electron Impact Ionization
Ion repeller
Repeller voltage
Ion chamber
Emission current
Chemical Ionization
When the source is operated in the Chemical Ionization (CI) mode, a reagent
gas (the CI gas) is admitted into the ion source at a relatively high pressure.
The gas molecules are ionized by the electron beam and sample ions are
generated in reactions with these gas ions. CI is a softer ionization technique
than EI, producing less sample fragmentation and, generally, a stronger
molecular ion.
AutoSpec functionality
The
figure "AutoSpec Premier components:" on page G-4
locations for the instrument.
G-2
Theory and principles of operation
Trap voltage
Emission
current
Filament current
Electron trap
Electron energy (volts)
Filament
Ion current
shows the component
Advertisement
Table of Contents
Troubleshooting
