The Principle of  X-ray Fluorescence Spectrometry

  • Ionization of an inner atomic shell (creation of an electron vacancy and emission of a photoelectron) gives rise to a highly excited short-lived atomic state liable to decay back to the ground state.

XRF Principle 1

  • Transfer an outer electron to fill the vacancy in the inner shell and the emission of an X-ray photon.XRF Principle 2

  • The energies and wavelengths of the emission X-ray are characteristic (different) for each element which forms the foundation of the modern XRF Spectrometry.

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