Improved Imaging in Low Energy Electron Microscopy and Photo Emission Electron Microscopy Using MEDIPIX2 Pixel Detector

Physics – Medical Physics

Scientific paper

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Low Energy Electron Microscopy, Photo Electron Emission Microscopy, Pixel Detector

Scientific paper

The application of the Medipix2 hybrid pixel detector in Low Energy Electron Microscopy (LEEM) and Photo Emission Electron Microscopy (PEEM) led to an improvement of the recorded image quality compared to the original setup based on microchannel plate (MCP), phosphor screen and CCD. The measurements were performed on an Elmitec LEEM III instrument without energy filter using an Ir(111) sample with graphene islands grown on the surface. The Medipix2 images exhibited better resolution and higher contrast compared to the MCP data. The results suggest that Medipix2 has potential to become the detector of choice for LEEM/PEEM instruments.

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