[3dem] advice for an objective aperture JEOL 2200 FS

Daniel Levy Daniel.Levy at curie.fr
Thu Jul 15 06:49:12 PDT 2010


Dear All

We have currently some troubles with our JEOL 2200 FS equipped with a pole
piece HT (Cs 1.4) when we remove any objective aperture and with or without
HCA apertures. The resulting images of a carbon coated grid showed strong
charges effects. Does it means something for somebody and how to avoid it  ?

Daniel

 

 

Daniel Lévy

Institut Curie UMR CNRS 168

11 rue P.M.Curie F 75 231 Paris

Phone: 33 1 56 24 67 82

Fax: 33 1 40 51 06 36

 <http://www.curie.fr/equipe/322> http://www.curie.fr/equipe/322

 

 

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