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characteristic x-rays |
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characteristic x-rays [‚kar·ik·tə′ris·tik ′eks‚rāz] (atomic physics) Electromagnetic radiation emitted as a result of rearrangements of the electrons in the inner shells of atoms; the spectrum consists of lines whose wavelengths depend only on the element concerned and the energy levels involved. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Since each atom has a unique energy pattern with its electrons having distinct quantum numbers, resulting characteristic x-rays are also unique with specific frequency and act as fingerprints of elements in the XRF analysis. The intensity of characteristic x-rays depends on the overvoltage, U, which is the ratio of the incident beam energy, [E. Measurements of the characteristic X-rays emitted by electrons shifting from high-energy, outer shells to low-energy, inner shells allow researchers to track the process. |
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