Position stabilization of EELS spectra

✍ Scribed by Kruit, Pieter ;Shuman, Henry

• Book ID: 102332323
• Publisher: Wiley (John Wiley & Sons)
• Year: 1985
• Tongue: English
• Weight: 215 KB
• Volume: 2
• Category: Article
• ISSN: 0741-0581
• DOI: 10.1002/jemt.1060020209

✦ Synopsis

The position of the zero-loss peak in electron energy-loss spectra was sensed with a double photo diode. A signal, proportional to the disturbances from a central position, was amplified and fed back into a deflection coil in order to compensate for the origin of the disturbances. Thus, slow variations of the position of characteristic edges in the EEL spectrum could be reduced by a factor 100, and 60 Hz oscilIations could be reduced by a factor 5.