X-ray Interaction with matter

-Attenuation; a reduction in the intensity of a polish of x-radiation as it passes through a medium out-of-pocket to ingress or to dissipateor to both. -Absorption; the transfer of energy from the roentgenogram adventure to the medium through which it passes. -Scattering; a change over in the sleeplessness of a photon due to fundamental interaction with the medium, this can come about with or without the loss of energy from the photon. -4 types of roentgenogram interaction withn point occur; rayleigh circularize, Compton scatter, photoelectric absorptoion and pair production. The first 3 fill a role in diagnostic radiography. Rayleigh sparge; occurs when the roentgenogram photon interacts with the full-length atom so that the photon is scattered with no change in internal energy to the scattering atom, nor to the x-ray photon. Rayleigh scattering is neer much than a minor contributor to the absorption coefficient. The scattering occurs without the loss of energy. Scattering is mainly in the former direction. Compton scatter; If an x-ray photon has an energy rattling(prenominal) much greater than the ionization energy of the electron with which it interacts, Compton scattering takes place. Incident x-ray is very high it only interacts with outer shell electrons. Incident photon loses energy, calamity photo ionizes the atom because of this loses energy passes onto Compton electron thus losing to a greater extent energy.

Probability of the process occurring is independent of atomic number. Process is likely to occur in bone and muscle. Probability of a Compton interaction decreases as incident photon energy increase. Photoelectric absorpti on; occurs when the x-ray photon is draped ! resulting in the ejection of electrons from the outer shell of the atom, resulting in the ionization of the atom. the ionized atom returns to the neutral state with the rise of an x-ray characteristic of the atom. This subsequent emission of lower energy... If you hope to exact a full essay, order it on our website: OrderEssay.net

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