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The doorway to XPS enlightenment

Coster-Kronig peak broadening

Why do some spin-orbit doublet peaks have different full width half maxima? What causes this?

Spin Orbit Doublets Icon

Spin-Orbit Coupling

Spin-orbit coupling splits core-level XPS peaks into doublets with fixed intensity ratios and energy separations that are element- and orbital-specific. Understanding this splitting is essential for correct peak assignment and quantification.

Auger-Meitner Process and Peaks

What are Auger-Meitner peaks in photoelectron spectroscopy? How do they arise and what do they mean?