Type
Description
open ion source
Standard ion source with maximum sensitivity
Cross beam ion source
for molecular beam applications
Grid ion source
for residual gas analysis in UHV (< 10
-8
hPa)
Tbl. 6:
Ion sources for analyzer QMA 250 M
1
2
3 4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
Fig. 5:
Components of the analyzer QMA 250 with open ion source
1
Filament unit of ion source
11
Fixing screw (2×) of electron multiplier in the jacket
tube
2
Ion source
12
Fixing screw and lock washer (3×) of the analyzer at
the feedthrough
3
Fixing screw (3×) of ion source
13
Fixing screws (2×) for HF connections of the quad-
rupole rod system
4
Nut and adjusting screw for aligning
and securing the quadrupole rod sys-
tem in the jacket tube
14
Screws (2×) of the quadrupole mass filter
5
Screws (2×) of the quadrupole mass
filter
15
Ceramic insulators of the ion source wiring
6
Jacket tube
16
Ceramic insulators of the filament wiring
3)
7
HF-connection for quadrupole rod sys-
tem
17
Ion source connections (3×)
8
Fixing screws (2×) of connection
flange in the jacket tube
18
Filament unit connections (3×)
9
HF-connection for quadrupole rod sys-
tem
19
10 Feedthrough
3.2.3 Electronic unit QME 250
The electronic unit is located on the analyzer and communicates with the host computer.
3)
The ceramic insulators of the filament wiring are longer than the ceramic insulators of the ion source wiring.
Product description
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