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The doorway to XPS enlightenment

Electronic Energy Levels in Atoms

Every XPS peak traces back to a specific electronic energy level in an atom. Understanding how these levels are structured — and why they have the energies they do — is the foundation of interpreting any XPS spectrum.

Core vs Valence Electrons

XPS probes core electrons, but valence electrons drive chemistry. Understanding the difference — and the relationship between them — is essential for interpreting XPS spectra correctly.

Electron Binding Energy Explained

Binding energy is the foundation of every XPS measurement. Learn what it means physically, how it is measured, and why chemical environment shifts it.

Thickogram Analysis

What is the thickogram in XPS analysis? What can it tell me? How do I use it?

XPS Transmission Function

What is the instrument transmission function in X-ray photoelectron spectroscopy? What do I need to know?

Relative Sensitivity Factors

What are relative sensitivity factors, and how do they affect my XPS analysis? Where do they come from?

Peak Intensity in XPS

What impacts our peak intensities in XPS? Why do we see different peak areas for some elements and orbitals, compared to others?

Recoil Effects

What are recoil effects in X-ray photoelectron spectroscopy and related techniues? How do these affect our data?

The Photoelectric Effect

What exactly is the photoelectric effect? How does this enable us to use the technique known as X-ray photoelectron spectroscopy?

Boron

Learn about analysis of boron by X-ray photoelectron spectroscopy. How can we analyse boron by XPS? What do we need to know?