Problem sem4160 SNF 2009-10-14 18:15:34: 5kV doesn't work

rostam at snf.stanford.edu rostam at snf.stanford.edu
Wed Oct 14 18:15:35 PDT 2009


SEM doesn't work at 5kV. I had to reduce the voltage to 2kV to be able to see something.
The filmament current is usually about 10 at 5kV. It's is about 20 right noww.




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