Transient Equilibrium - Activity in Transient Equilibrium

Activity in Transient Equilibrium

The activity of the daughter is given by the Bateman equation:

,

where and are the activity of the parent and daughter, respectively. and are the half-lives of the parent and daughter, respectively, and BR is the branching ratio.

In transient equilibrium, the Bateman equation cannot be simplified by assuming the daughter's half-life is negligible compared to the parent's half-life. The ratio of daughter-to-parent activity is given by:

.

Read more about this topic:  Transient Equilibrium

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