- #1

mike_M

- 1

- 0

Now, at time t, the number of remaining isotope atoms is given by [itex]N(t) = N_0 e^{-(\lambda_1 + \lambda_2) t} [/itex]. My question is, how do I calculate the number of atoms that, at time t, have decayed by *one* specific process (e.g. by radioactive decay alone)? I don't think I can use the above equation, with [itex]\lambda_1[/itex] instead of the sum, because such an equation would describe the number atoms

*assuming that that only one decay process is occurring*(the one characterized by the used value of [itex]\lambda[/itex].

How to proceed then?

Thanks in advance for your help.