Nuclear Physic
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Created by:
ClarissaGodoy on March 17, 2012
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non-imaging devices
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20 terms
Terms | Definitions |
|---|---|
 They are able to detect the type of radiation | Proportional counters: |
| Particulate radiations travel a shorter distance through matter than electromagnetic radiation because? | Particulate radiations have mass |
| What can you say about Gegier Muller counter? | They operate with a voltage higher than a dose calibrator, They are used to measure small amount of radioactivity, They use halogen gasses as the quenching gas. |
| A dose calibrator requires specific tests to be done periodically to make sure it's working properly. (Daily) | accuracy |
| Geometric dependence of a dose calibrator must be checked when? | At installation |
| Decay by electron capture (EC) is an alternative to? | Positron decay (Beta-Plus) |
| Decay by internal conversion (IC) is an alternative to the ? | Gamma- ray decay |
| The physical half-life of a radionuclide is the time it takes: | for the nuclide to decay to one half of the original activity. |
| Radioactive half life is the time? | required for radioactivity to reach one half of its original value. |
| A positively charged particle made up of two protons and two neutrons and released by a radioactive nucleus is called? | Alpha Particle |
| An electron released by a radioactive nucleus that causes a neutron to change into a proton is called? | Beta Particle |
| The amount of time for half the atoms in a radioactive sample to decay is called? | The half_life |
| The process in which the nuclei of unstable atoms can become more stable by emitting particles and/or electromagnetic radiation is called | radioactive Decay |
| High-energy electromagnetic radiation released by a radioactive nucleus are called | Gamma Ray |
| Aneutron in the nucleus decays into a proton, an electron, and an anti-neutrino is called a ? | Beta ray |
| What electromagnetic radiation can be stopped with a piece of paper? | Alpha particles |
| What electromagnetic radiation can be stopped with a thin metal sheet? | Beta particles |
| What electromagnetic radiation can be stopped with a thick metal sheet? | Gamma Ray |
| What electromagnetic radiation travel at the speed of light? | Gamma ray |
| What happens in a chain reaction? | Products that start a new reaction are released. |
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