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Kai Sun

Research Scientist
2600 Draper Avenue, NAME Building RM124
T: (734) 936-3353
Kratos Axis Ultra X-ray Photoelectron Spectroscopy
X-ray Photoelectron Spectroscopy (XPS), also known as Electron Spectroscopy for Chemical Analysis (ESCA), uses soft X-rays to produce photoelectrons from the surface layers of atoms in a solid sample. The emitted electrons are analyzed according to their kinetic energy and the spectrum so produced is used to identify the elements present and their chemical states.
- Spectrum mode: Using the monochromated Al source: 2 x 1 mm with energy resolution ~0.5ev.
- Small area spectroscopy: ~ several µm.
- Imaging mode: ~ 900µm x 900µm with spatial resolution ~ 6µm.
