X-ray Photoelectron Spectroscopy

X-ray photoelectron spectroscopy provides quantitative chemical state information on the upper 1-10 nm of a surface.

Our Axis Supra is equipped with 

Basic principle

An X-ray beam is focussed onto a surface resulting in the ejection of electrons with kinetic energies characteristic of the atoms and bonding environments they originate from.

Survey spectra

The number of electrons is plotted as a function of binding energy to produce survey spectra.

These spectra show the elemental composition of a surface, and allow

Survey spectra

High resolution spectra

The binding energy of a photoelectron reflects the bonding environment it was emitted from.

Accurate measurement of peak positions after deconvolution of high resolution spectra provides quantitative chemical state information. This includes

High resolution spectra

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