A radioactive source has a measured half-life and decays by three independent…

PHYSICS · Multi-part · Fermi University Physics · Nuclear Physics · Radioactivity and decay modes · Radioactivity and decay modes

The Nucleus Resolved, Ch Decay rates from the golden rule: kinetics closed and alpha decay finished

Problem

A radioactive source has a measured half-life

T_{1/2} = 12.3\,\mathrm{h}

and decays by three independent branches with branching fractions

70.0\%

25.0\%

and

5.0\%

. ((a)) Find the partial half-life of the

70.0\%

branch. ((b)) Find the partial half-life of the

25.0\%

branch. ((c)) Find the partial half-life of the

5.0\%

branch.