c.
SHADOW
(a+b+c) – image with strong oblique component, image similar to SEI
but with BSE, needed for LV mode where SEI detector does not function
The Solid State BSE detector is fairly “slow”, therefore at fast scan speeds the image
is “blurred” in the raster direction. This does not occur at slower scans but makes
focus/astigmatism correction a little more difficult to do.
ACB
and manual knob
adjustment function in all the
BEIW
modes
Selecting the Operating Voltage
1.
Click
Acc. Volt
to get
2.
Double Click value to be selected
The best accelerating voltage to use is very sample and information dependent. The
appearance of and information contained in an image taken at 1-5 kV can be very
different from the “same” image at 20-30 kV. This is especially true for imaging low
density (e.g. porous) and/or low-Z (atomic-#) surfaces.
