Term
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Definition
| Mnemonic meaning to keep all radiation exposure as low as reasonably achievable |
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Term
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Definition
ACTIVITY- SI UNIT EQUIVALENT TO CURIE
Unit of radioactivity in the International System of Units, equal to one disintegration per second |
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Term
| Classic Coherent Scattering |
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Definition
| Interaction with matter in which a low-energy photon(below 10 Kiloelectron volts) is absorbed and released with its same energy, frequency, and wavelength but with a change of direction |
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Term
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Definition
| interaction with matter in which a higher-energy photon strikes a loosely bound outer electron, removing it from its shell, and the remaining energy is released as a scattered photon |
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Definition
ACTIVITY- TRADITIONAL UNIT equivalent to BECQUEREL
unit of radioactivity defined as the quantity of any radioactive nuclide in which the number of disintegrations per second is 3.7x10^10 |
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Definition
| cells of an organism whose function is to reproduce the organism(e.g., ovum, spermatozoon) |
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Definition
ABSORBED DOSE- SI UNIT equivalent to the RAD
unit in the International System used to measure the amount of energy absorbed in any medium; 1 Gy= 100 radiation absorbed doses |
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Term
| International System (SI) of units |
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Definition
| system of units based on metric measurement developed in 1948 and having units to measure radiation |
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Term
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Definition
| units of energy equal to 1000 electron volts |
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Term
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Definition
| interaction between matter and a photon possessing a minimum of 1.02million electron volts of energy producing two oppositely charged particles, a positron and a negatron |
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Term
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Definition
| direct interaction with the nucleus of the atom, causing a state of excitement within the nucleus, followed by the emission of a nuclear fragment |
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Term
| photoelectric interaction |
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Definition
| interaction with matter in which a photon strikes an inner shell electron, causing its ejection from orbit with the complete absorption of the photons energy |
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Term
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Definition
| forms of energy emitted and transferred through matter |
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Term
| Radiation Absorbed Dose(RAD) |
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Definition
ABSORBED DOSE- TRADITIONAL UNIT EQUIVALENT TO GRAY
unit used to measure the amount of energy absorbed in any medium; equal to 100 ergs of energy absorbed in 1g of material |
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Term
| Radiation Equivalent Man(REM) |
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Definition
TRADITIONAL UNIT= SIEVERT
unit of DOSE EQUIVALENCE; equal to the product of absorbed dose in rad and a quality factor |
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Term
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Definition
EXPOSURE IN AIR- TRADITIONAL UNIT EQUIVALENT TO COULOMB/KILOGRAM
a unit of exposure in air; that quantity of x-radiation or gamma radiation that produces the quantity 2.08x10^9 ion pairs per cubic centimeter of air |
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Term
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Definition
Equivalent to REM- DOSE EQUIVALENCE
unit in the International System used to measure the dose equivalence, or biologic effectiveness, of differing radiations;1 Sv =100 rem |
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Term
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Definition
| all of the body's cells except germ cells |
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Term
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Definition
| a form of electromagnetic radiation traveling at the speed of light, with the ability to penetrate matter |
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Term
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Definition
exposure in air- SI UNIT
equivalent to the roentgen (traditional unit) |
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