HALF LIVES

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US History

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Last updated 7:20 PM on 11/12/22
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7 Terms

1
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What is special about radioactive decay
it is random
2
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What is the half life
time take for number of nuclei of isotope to halve OR time it takes for count rate from a sample containing isotope to fall to half its initial level
3
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How is radioactive decay random
it can occur at any given point, we cannot tell when it'll happen
4
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How can you find activity
geiger muller tube and counter
5
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What is a geiger muller tube and counter
a device that records all the decay that reaches it each second
6
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How do you figure out number of half lives
(how many half lives occur * half no of nuclei that many times) / source of half life
7
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How do you figure out remaining nuclei
Initial Nuclei / 2^n. n=no* of half lives