X Ray Fluorescence

  • June 2020
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X-ray Fluorescence Introduction X-ray fluorescence is a spectroscopic method that is commonly used for solids in which secondary x-ray emission is generated by excitation of a sample with x-rays. The x-rays eject inner-shell electrons. Outer-shell electrons take their place and emit photons in the process. The wavelength of the photons depends on the energy difference between the outer-shell and inner-shell electron orbitals. The amount of x-ray fluorescence is very sample dependent and quatitative analysis requires calibration with standards that are similar to the sample matrix.

Instrumentation Solid samples are usually powdered and pressed into a wafer or fused in a borate glass.

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