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6 Operation | 6.3 Modifying Gun Parameters
ZEISS
6.2.8 Saving the Image
1. In the
Toolbar
, click the
Freeze:Unfreeze/Scanning
icon.
à
A red dot at the right bottom of the
Image Area
indicates that the image is frozen.
2. From the
Menu Bar
, select
File > Save Image
.
à
The
Export TIFF
dialog is displayed.
3. To change the save path, click
Change Directory
.
à
A file explorer window is displayed.
4. To confirm the selected path, click
Select Folder
.
5. Enter the filename in the
Filename
input field.
6. Click
Save <file name>.tif
.
7. To continue imaging, click the
Freeze:Unfreeze/Scanning
icon.
6.3 Modifying Gun Parameters
6.3.1 Selecting the Gun Mode
The microscope can operate in different gun modes:
§
Normal
§
Imaging
§
Analytic
Normal Gun Mode
In Normal gun mode, the temperature of the Schottky emitter (gun / filament) and the extraction
voltage are optimized for a long lifetime of the Schottky emitter. Normal gun mode is suitable for
most applications.
Imaging Gun Mode
In Imaging gun mode, the temperature of the Schottky emitter and the extraction voltage are re-
duced in comparison to the Normal gun mode. This leads to a reduction of the energy spread of
the primary electrons. Overall, the probe current in Imaging gun mode is about half the probe cur-
rent in Normal gun mode.
Imaging gun mode is especially useful at low kV or at high magnifications to reduce chromatic
aberration and to achieve a better resolution. Switching from Normal gun mode to Imaging gun
mode is useful for reducing the probe current without any need for beam adjustments.
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Instruction Manual ZEISS Crossbeam 350 | en-US | Rev. 3 | 349500-8111-000