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GAMMARAY SOURCES AND EQUIPMENT
THE RECORDING OF RADIATION
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absorbed absorption coefficient Agfa-Gevaert aluminium anode applied betatrons characteristic circuit Compton scattering container contrast crack curve defects detail detector diameter dose dose-rate effect electron emission emitted emulsion equipment experimental exposure factor film density film unsharpness filter flaw sensitivity fluoroscopic focal spot gamma-ray source geometric unsharpness grain half-life high energy X-rays image quality increase industrial radiography intensity ionisation chamber ionising radiation IQI sensitivity isotopes kilovoltage kV X-rays light limited linac material maximum measured metal method Modulation transfer function neutron obtained output penetration photographic film photon pipe plates possible practice produce pulse quantum radioactive radiographic radiographic films range scattered radiation shown in Fig source-to-film distance specimen thickness spectrum speed standard steel Table target thermal neutrons thin unsharpness usually values voltage wavelength weld width wire X-ray beam X-ray energy X-ray image intensifier X-ray set X-ray tube