All Problems Radioactivity
Problem 6.214
Knowing the decay constant \(\lambda\) of a nucleus, find: (a) the probability of decay of the nucleus during the time from 0 to \(t\) (b) the mean lifetime \(\tau\) of the nucleus.
(a) \(P=1-\exp (-\lambda t)\) (b) \(\tau=1 / \lambda\)