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Nondestructive testing guide, Training Exam
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Glossary Of Terms For Radiographic Testing
2007-08-14 16:07:00
Glossary of Terms for Radiographic TestingAbsorb dose:The amount of energy imparted by ionizing radiation per unit mass of irradiated matter. Indicated by "rad"; 1 rad = 0.01j/kg. SI units is "gray"; 1 gray = 1 J/kg.Absorb dose rate:the absorbed dose per unit of time; rad/s or as SI unit gray/s.Absorption:The process whereby the incident particles or photons of radiation are reduced in a number or energy as they pass through matter, i.e. the energy of the radiation beam is attenuated. Note that the total attenuation is the sum of the components due to photoelectric absorption, Rayleigh scattering, Compton scattering and pair production.Accelerating potential:The difference in electric potential between the cathode and anode in an X-ray tube through which a charged particle is accelerated, usually spezified in units of kV or MV. Activity:The number of nuclear transitions occurring in a given quantity of radioactive material per unit of time. For example one disintegration/second is a be ...
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