[3dem] Arching in the gun chamber

[kunihiro uryu]

We have experiencing arching in the gun chamber. Has anyone experienced it?
If so, did it affect data quality? How did you fix it?  Many thanks in
advance.
Regards,
Hiro

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Kunihiro Uryu, Ph.D.,
Research Assistant Professor
Director of Electron Microscopy
Resource Center (EMRC)
RRB Rm120
The Rockefeller University
1230 York Ave., Box 230
New York, NY 10065
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