Definition
When X-rays of sufficient frequency (energy) interact with a substance, inner shell electrons in the atom are excited to outer empty orbitals, or they may be removed completely, ionizing the atom. The inner shell “hole” will then be filled by electrons from outer orbitals. The energy available in this de-excitation process is emitted as radiation (fluorescence) or will remove other less-bound electrons from the atom (Auger effect).
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Wu, X. (2013). X-Ray Spectroscopy. In: Dubitzky, W., Wolkenhauer, O., Cho, KH., Yokota, H. (eds) Encyclopedia of Systems Biology. Springer, New York, NY. https://doi.org/10.1007/978-1-4419-9863-7_1024
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DOI: https://doi.org/10.1007/978-1-4419-9863-7_1024
Publisher Name: Springer, New York, NY
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Online ISBN: 978-1-4419-9863-7
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