P7 radioactivity

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6 Terms

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Activity

The number of nuclei which decay per second

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Count-Rate

The amount of radiation detected each second

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contamination

the unwanated prsence of radioactive material on an object or person. the person is irradiated until it is removed

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Irradiation

The exposure for a person of object to nuclear radiation. object doesnt become radioactive

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half life 1

the average time for the activity of unstalbe isotope to ½

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half life 2

the average time for it takes for half of unstable nuclei to decay