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
Famous quotes containing the words activity, transient and/or equilibrium:
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—Aristotle (384–322 B.C.)
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—Henry David Thoreau (1817–1862)
“There is a relation between the hours of our life and the centuries of time. As the air I breathe is drawn from the great repositories of nature, as the light on my book is yielded by a star a hundred millions of miles distant, as the poise of my body depends on the equilibrium of centrifugal and centripetal forces, so the hours should be instructed by the ages and the ages explained by the hours.”
—Ralph Waldo Emerson (1803–1882)