photoelectric absorption

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Related to photoelectric absorption: Compton scattering

pho·to·e·lec·tric ab·sorp·tion

interaction of a gamma photon with matter in which the incident photon is completely absorbed, giving up all its energy by displacing and accelerating an inner shell electron.
See also: photoelectric effect.


pertaining to the electrical effects of light or other radiation.

photoelectric absorption
the basis of diagnostic radiology. The difference in absorption of x-ray energy by different tissues causes differences in electromagnetic energy arriving at the film.