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Ch 8 Rad protection
principles of radiographic imaging
Question | Answer |
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Explain the differences between alpha and beta particles. | |
An alpha particle contains two protons and two neutrons, is equivalent to a helium nucleus. It has great mass and a positive charge. A beta particles are negatively charged and very light. As a result they travel further in matter then alpha particles. | |
Differentiate between somatic and gentic effects. | Somatic effects may become evident in the irradiated individual. Gentic effects do not produce any significantly observable effects in the exposed individuals. |
What are the primary sources of ionizing radiation? Give examples of each. | Natural: cosmic radiation, terrestrial radiation. Man made: x-rays,radiopharmaceutical, consumer products, air travel, nuclear fuel production, and fallout. |
What is the kerma? | Kinetic energy released in matter; the energy I'm parted directly to the elections per unit mass. |
Describe the function of a GM survey instrument. | Geiger Mueller (GM) survey instruments or counters are primarily used to detect the presence of radiation rather then provide exact measurment. |
What are the three basic quantities of radiation measurements and their associated conventional and si units? | Roentgen(r): kilogram Rad: gray Rem: sievert |
List three types of personnel monitoring devices. | Optically stimulated luminescence (osl) dosimeter, film badge dosimeter, and thermo luminescent do silencer (tld). |
Explain the function of the filters in a dosimeter. | The filters in the film badge holder provide a means of determining the energy of the incident radiation |