Alpha Decay

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Alpha Decay
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Transmutation
parent daughter
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Q-Value
The energy released is called the disintegration
energy, Q or Q-value
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Beta Decay
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Gamma Decay
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Half-Life and Rate of Decay
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The number of decays DN that occur in a very
short time interval Dt is proportional to Dt and
the total number N of radioactive nuclei present
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The number of decays per second is called the
activity of the sample.
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Units of Activity
1 Ci3.70x1010 decays per second
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The half life of an isotope is defined as the
time it takes for half the original amount of
isotope in a given sample to decay.