Physics Bucharest 2017
Radioactive Decay
It is only possible to determine the probability of decay in a certain time. In a sample of N nuclei the number of decays per unit time is:
dt dN
l l
N
A =-dN/dt
eN=N(t) t -
0
2ln
T
2/1
l
Half Life: The time it takes for half the amount of a radioactive material to decay Effective half life (Te) = TpTb/(Tp+Tb) Tp= radioactive decay Tb= biological transport or elimination from the specific site
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