Bruker QUANTAX EDS User Manual

5.5 Drift Correction QUANTAX EDS
59
5.5
Drift Correction
The drift correction tool compensates sample drift when performing long and/or high-resolution
acquisitions.
Step
Example/hints
1
Select a workspace (
Objects, Line
scan,
Mapping, or Imaging).
These workspaces allow capturing an EM
image and beam control
.
Set measurement conditions and before
start
ing the analysis proceed as follows:
Refer to the guides in section 5.3, 5.14, 5.15
or
5.17. When acquiring a Map, select a
smaller map area than the captured image.
Use
Fixed or Variable options under Map
area (see step 6 in 5.17).
2
Use the
icon in the bottom left
corner of the Scan configurator to
open
the SCAN CONFIGURATION dialog.
3
Click
to open the I
MAGE
DRIFT CORRECTION SETTINGS dialog.
4a
When performing a Line scan or Objects
analysis, select
Current input and
C
orrection interval.
Use Current input and 60 seconds as initial
value for
Correction interval. If the analysis
stops due to extensive d
rift, decrease this
value. U
se Current value as Dwell time to
capture the same quality image as during the
analysis or use a lower
Special value than
used for Imaging to save time.
4b
When acquiring a Map, the correction
time is equal to the
Mapping scan time.
If image drift is extensive, reduce Image
capture time
by decreasing Mapping Dwell
time and
Line average
.
5
Click on
to change parking position
of the beam
.
Use a parking position outside of the analysis
area to avoid beam induced contamination.
Right click
to change parking
conditions.
6
Click on to activate drift correction.
7
Start data acquisition by clicking the
button in the current
workspace.
The system starts acquisition and captures an
image after each correction interval set in
Step
4.
8
Right
click on to display current
image shift.
The latest correction image, the latest
calculated drift vector (arrow) and the quality
of drift correction are displayed. When the
drift exceeds the limit which can be corrected
by the system, the acquisition st
ops
automatically. Acquired data remains in
the
workspace.
The starting image records the initial acquired
image when the acquisition starts. The image
is then compared at interval
s set by the user.
The quality plot records the pixel shift in X
and Y direc
tions of the image obtained at the
latest interval as compared to the original
image.

Bruker QUANTAX EDS Specifications

General

Brand	Bruker
Model	QUANTAX EDS
Category	Laboratory Equipment
Language	English