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32 Cards in this Set
- Front
- Back
- 3rd side (hint)
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W Value |
The average amount of energy needed to produce an ion pair in a given medium |
W |
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Specific ionization |
(Average number of) ion pairs produced (by a charged particle) per unit distance traveled in an absorbing medium |
S.I |
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Linear Energy Transfer |
(Average value of) energy locally deposited (by a charged particle) in an absorbing medium per unit distance |
LET |
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Range |
Average distance traveled by a radiation in an absorbing medium |
R |
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Measuring Stopping power |
For a given number of absorber, the average energy lost by a charged particle unit per distance traveled |
S |
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Ionization |
Any process that results in the removal is a bound electron from an electrically neutral atom or molecule by adding enough energy to the electron to over cone its binding energy |
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Excitation |
Abu process that adds energy to an electron of an atom or molecule so that it copies a higher energy state |
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K shell |
Inner most shell |
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L shell |
2nd she’ll |
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Bremsstrahlung |
Radiative energy loss of moving charged particles as they interact with the matter through which they are moving |
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Beta specific ionization |
5,000 pairs per cm |
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Stopping powet |
The ability to remove energy from a beam or charged particles |
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Somatic |
Only affects the individual exposed(can’t be passed to offspring) |
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DOE |
Enforces rules. Manage radiation / radioactive material that may be exposed to workers, public, and the environment |
Department of energy |
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ALARA |
Keeps exposure as low as possible / optimizes Exposure. Risk/benefit |
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Site specific manual |
Invokes the applicable provisions of the standard |
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Should |
Denotes guidance |
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Shall |
Denotes requirements |
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Non stochastic |
A threshold may exist |
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Stochastic |
There is no threshold |
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Alpha shielding |
Thin amounts of mostly any material (paper, dead skin, few cm of air) |
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Beta |
Rubber, aluminum, plastic |
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Alpha shielding |
Thin amounts of mostly any material (paper, dead skin, few cm of air) |
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Beta |
Rubber, aluminum, plastic |
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Gamma |
Lead, steel, depleted uranium |
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Alpha shielding |
Thin amounts of mostly any material (paper, dead skin, few cm of air) |
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Beta shielding |
Rubber, aluminum, plastic |
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Gamma |
Lead, steel, depleted uranium |
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Neutron shielding |
Hydrogenous material (oil, plastic, water) |
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Gamma shielding |
Lead, steel, depleted uranium |
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When the energy of a photon is converted to mass |
When does pair production occurs? |
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Pair production |
An interaction that requires a photon energy of 1.02MeV or more |
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