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This book, published in , is an oldie but goodie. In his introduction, Attix discusses how small amounts of radiation can cause so much biological damage. The reason why so much attention is paid to ionizing radiation , and that an extensive science dealing with these radiations and their interactions with matter has evolved, stems from the unique effects that such interactions have upon the irradiated material. Biological systems e. Clearly the ability of ionizing radiations to impart their energy to individual atoms, molecules, and biological cells has a profound effect on the outcome.
The resulting high local concentrations of absorbed energy can kill a cell In Section Attix writes Theoretical derivation of the interaction cross section for the photoelectric effect is more difficult than for the Compton effect , because of the complications arising from the binding of the electron.
The contribution of the photonuclear scattering cross section is circled in red. Figure In a photonuclear interaction an energetic photon exceeding a few MeV enters and excites a nucleus, which then emits a proton or neutron.
Thus it has been commonly neglected in dosimetry considerations. Attix provides insight into the difference between how photons interact with tissue and how charged particles interact. An individual photon or neutron incident upon a slab of matter may pass through it with no interaction at all, and consequently no loss of energy.
By contrast, a charged particle, being surrounded by its Coulomb electric force field, interacts with one or more electrons or with the nucleus of practically every atom it passes. He was a professor at the University of Wisconsin , where he chaired the Department of Medical Physics before retiring in In he received the William D.
The International Organization for Medical Physics marked its 50th anniversary by publishing short biographical sketches of 50 medical physicists who have made outstanding contributions to the advancement of medical physics over the last 50 years. You can read it here. Herb Attix was on the list. Posted by.
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