Electron microscopy
 
Anode Wobbler in TEM
- Practical Electron Microscopy and Database -
- An Online Book -
Microanalysis | EM Book                                                                                   http://www.globalsino.com/EM/        

=================================================================================

 

Anode Wobbler function on TEM systems is used to align the electron gun axis with so-called "Gun Tilt" switch by varying the 2nd anode voltage periodically. This can be done at low magnifications, e.g. at 40,000 X.

In practice, the operation can be slightly different from one system to another. For instance, for JEOL 2010F, the alignment procedure is:
         i) Select the BRIT TILT button on the panel.
         ii) Press the ANODE WOBBLER button.
         iii) Use the TILT knobs on the panel to make the beam expand and contract concentrically.

 

 

 

 

 

=================================================================================