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Definition
| A nuclear particle identical to a helium nucleus with symbol α or 24He |
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Definition
| A unit of activity of a radioactive sample equal to one disintegration per second |
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Definition
| A particle identical to an electron with symbol β or -10e that forms in the nucleus when a neutron changes to a proton and an electron |
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Definition
| A technique used to date ancient specimens that contain carbon. The age is determined by the amount of active carbon-14 that remains in the samples |
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Definition
| A fission reaction that will continue once it has been initiated by a high-energy neutron bombarding a heavy nucleus such as uranium-235 |
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Definition
| A unit of radiation equal to 3.7 x 1010 disintegrations/s |
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Definition
| A diagram of the decay of a radioactive element |
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Definition
| The measure of biological damage from an absorbed dose that has been adjusted for the type of radiation |
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Definition
| A process in which large nuclei are split into smaller pieces, releasing large amounts of energy |
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Definition
| A reaction in which large amounts of energy are released when small nuclei combine to form larger nuclei |
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Term
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Definition
| High-energy radiation (with symbol 00γ) that is emitted by an unstable nucleus |
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Term
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Definition
| A unit of absorbed dose equal to 100 rads |
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Term
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Definition
| The length of time it takes for one-half of a radioactive sample to decay |
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Definition
| A particle with no mass and a positive charge produced when a proton is transformed into a neutron and a positron |
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Term
| rad (radiation absorbed dose) |
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Definition
| a measure of an amount of radiation absorbed by the body |
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Term
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Definition
| Energy or particles released by radioactive atoms |
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Term
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Definition
| The process by which an unstable nucleus breaks down and releases high-energy radiation |
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Term
| rem (radiation equivalent in humans) |
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Definition
| A measure of the biological damage caused by the various kinds of radiation (rad x radiation biological factor) |
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Definition
| The image of a site in the body created by the detection of radiation from radioactive isotopes that have accumulated in that site |
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Definition
| Materials used to provide protection from radioactive sources |
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Term
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Definition
| A unit of biological damage (equivalent dose) equal to 100 rems |
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