3 Product and Functional Description | 3.3 Optional Components and Accessories
ZEISS
5
Specimen
Function
The prerequisite for using this detector is that the specimen emits light when interacting with the
primary electron beam. Differences in crystal structure or the presence of impurities in a cathodo-
luminescent material result in variations in the energy gap between the filled valence bands and
the empty conduction bands, and consequently a change in the CL emission.
The light (photons) emitted by the specimen is collected by the CL detector and converted into a
signal for imaging.
The CL detector is fully integrated into the automatic brightness and contrast control of the micro-
scope and can be used simultaneously with any of the detectors without degrading their perfor-
mance.
The detector can be used during energy-dispersive X-ray spectrometer (EDS) measurements and
wavelength-dispersive spectrometer (WDS) measurements at any valid magnification.
3.3.2 Control Panel
Purpose
The control panel allows direct access to 14 of the most frequently used functions. It integrates a
full sized keyboard, 11 turning knobs, and 8 push buttons.
Position
The control panel is placed on the work desk.
1
2
3
6
7
8
4
5
11
10
9
Fig. 39: Control panel
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Instruction Manual ZEISS GeminiSEM series | en-US | Rev. 2 | 349500-8138-000
