7D10.21 Half-Life

Demonstrate radioactive decay and half-life using Science Workshop detector or audible ratemeter. Uses Cs> Ba isotope generator to provide isotope with short half-life.

Picture: Not Yet Available 

Setup Requirements: Advance notice needed for Science Workshop version. Teacher needs to know how to use Science Workshop equipment if you want to plot data using computer. Radioactive sample prepared shortly before use. 

Equations: N(t) = N(0) (1/2)^( t/half-life) 

Safety Issues: Exposure to radiation. Allow to decay away during class. Return planchet and remaining radioactive liquid to Demo Room.  Damage to GM tube.