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15 cards from this deck
Random process
Rate of decay; nuclei decaying per second
Becquerel (Bq)
1 disintegration per second
A=λNA = \lambda NA=λN
Radioactive decay constant
s−1s^{-1}s−1
Time for half of undecayed nuclei to decay
1/2 or 50%
Exponential decay curve
T1/2=0.693λT_{1/2} = \frac{0.693}{\lambda}T1/2=λ0.693
Fast decay (large decay constant)
Slow decay (small decay constant)
(12)n(\frac{1}{2})^n(21)n
Number of undecayed nuclei
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