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5.7 Spectrum Acquisition QUANTAX EDS
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5.7 Spectrum Acquisition
This section describes the workflow for spectrum acquisition within the Spectra workspace. It is
recommended to acquire a preview spectrum before proceeding with analysis in various
workspaces.
Step Examples/hints
Choose appropriate measurement
conditions on the electron microscope.
Refer to the previous sections 5.1, 5.2, and
5.3.
1
Select the workspace.
2
Click the button to acquire
a live spectrum.
The live spectrum appears in the spectrum
window. Click the
button
again to stop acquisition.
3
Click on the button to
set timing parameters in the
Preview
timing
submenu.
4
Click on the button
a) Set
Acquisition parameters
Set acquisition time.
Automatic Fast (50,000 counts) for major elements,
Precise (250,000 counts) for minor elements,
Exhaustive
(1,000,000 counts) for elements
close to the detection limit.
Manual If Manual is selected, the acquisition has to
be stopped manually by clicking the
button.
Real Time The acquisition will stop after the time
entered in the dialog box has elapsed.
Live Time The acquisition will stop after the dead
time corrected acquisition time has elapsed.
Counts The acquisition will stop after the predefined
number of counts is recorded.
b) Set
Automatic quantification
If
Continuous/After acquisition
is selected,
the spectrum is quantified during/after
acquisition. Click to access the method
editor (see description in 5.12.1). Load a
quantification method using the
button.
c) Activate
Cyclic acquisition
This option acquires several spectra with
identical settings from the same area. Set
Cycle count and Pause [s]. Use Add to
project to automatically add acquired spectra
to project.
d)
Spectrum numbering
. Automatic numbering can be activated. The
numbering will start with the entered
Spectrum number .