ThermoFisher K-Alpha XPS: X-ray Photoelectron Spectrometer
X-ray photoelectron spectrometry is a tool used to measure external surfaces, and is capable of detecting elements present in the first few nanometers of a surface. The photoelectric effect is the physical principal behind the function of this spectrometer. In addition to elemental composition, information about chemical state (i.e. oxidation states) can often be determined from the binding energy of the ejected photoelectrons.
If you are interested in obtaining XPS data, please see the pricing structure below, and reach out to Professor of Chemistry and Biochemistry Lauren Benz, PhD, at laurenbenz@sandiego.edu.
- General Info
- Pricing Structure
- Acknowledgement Requirement
The K-Alpha features a hemispherical analyzer, and utilizes an aluminum K-alpha monochromatic X-ray source with variable spot size (50 μm– 400 μm). Sample charging (non-conductive samples) can typically be mitigated using the dual beam charge compensation source which neutralizes charge using both low energy electrons and argon ions. Physisorbed material and layered materials can be sputtered at energies from 100-4000 eV by utilizing the built-in ion gun. Angle-resolved measurements are also possible utilizing our tiltable sample holder for certain samples.
If you are local, we also have a vacuum transfer module for analyzing air-sensitive samples.