{"id":3027,"date":"2020-10-06T12:06:00","date_gmt":"2020-10-06T19:06:00","guid":{"rendered":"https:\/\/www.rbdinstruments.com\/blog\/?p=3027"},"modified":"2020-10-06T12:06:05","modified_gmt":"2020-10-06T19:06:05","slug":"microcma-length-the-long-and-short-of-it","status":"publish","type":"post","link":"https:\/\/www.rbdinstruments.com\/blog\/microcma-length-the-long-and-short-of-it\/","title":{"rendered":"microCMA Length, the Long and Short of It"},"content":{"rendered":"\n

RBD Instruments’ microCMA compact Auger electron energy analyzer is designed to fit on a standard 2.75″ \/ 70 mm CF flange. This makes it possible to add surface sensitive AES (Auger Electron Spectroscopy) to an existing vacuum chamber, as long as there is an available port. <\/p>\n\n\n\n

The standard length of the microCMA analyzer is 11.1″ \/ 283 mm which works well for most 8″ \/ 200 mm diameter vacuum chambers. This standard length factors in a Z translator that is used to move the microCMA to the sample for analysis and to retract the microCMA when it is not in use.  <\/p>\n\n\n\n

However, what if your flange-to-chamber distance is much longer or much shorter than the standard length? There is a 4.5″ \/ 114 mm limit on how short the microCMA can be due to the geometry of the analyzer section. For longer flange-to-target distances, the analyzer section can be extended as needed. The photo below shows a short 5″ microCMA and a long 21″ \/ 533.4 mm microCMA.<\/p>\n\n\n\n

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