Coherent scattering
Updates to Article Attributes
ClassicalCoherent scattering (also known as unmodified, coherentclassical or elastic scattering) occurs when the energy of the X-ray or gamma photon is small in relation to the ionisation energy of the atom and therefore occurs with low energy radiation.
Upon interacting with the attenuating medium, the photon does not have enough energy to liberate the electron from its bound state (i.e., the photon energy is well below the binding energy of the electron) so no energy transfer occurs. The only change is a change of direction (scatter) of the photon, hence 'unmodified' scatter. ClassicalCoherent scattering is not a major interaction process encountered in radiography at the energies normally used.
Coherent scattering varies with the atomic number of absorber (Z) and incident photon energy (E) by Z2 / E.
-<p>Classical scattering (also known as unmodified, coherent or elastic scattering) occurs when the energy of the X-ray or gamma photon is small in relation to the ionisation energy of the atom and therefore occurs with low energy radiation.</p><p>Upon interacting with the attenuating medium, the photon does not have enough energy to liberate the electron from its bound state (i.e., the photon energy is well below the binding energy of the electron) so no energy transfer occurs. The only change is a change of direction (scatter) of the photon, hence 'unmodified' scatter. Classical scattering is not a major interaction process encountered in radiography at the energies normally used.</p>- +<p>Coherent scattering (also known as unmodified, classical or elastic scattering) occurs when the energy of the X-ray or gamma photon is small in relation to the ionisation energy of the atom and therefore occurs with low energy radiation.</p><p>Upon interacting with the attenuating medium, the photon does not have enough energy to liberate the electron from its bound state (i.e., the photon energy is well below the binding energy of the electron) so no energy transfer occurs. The only change is a change of direction (scatter) of the photon, hence 'unmodified' scatter. Coherent scattering is not a major interaction process encountered in radiography at the energies normally used.</p><p>Coherent scattering varies with the atomic number of absorber (Z) and incident photon energy (E) by Z<sup>2</sup> / E.</p>
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