Principle
The half-life of a Ba-137 m daughter substance eluted (washed) out of a Cs-137 isotope generator is measured directly and is also determined from the increase in activity after elution.
Benefits
- Experience the essence of the Nobel Prize: M. Curie, P. Curie and Becquerel (1903)
- Isotope generator produces sufficient radioactive particles 1/2 life law
- Versatile GM counter can be used in many other experiments
Tasks
- To measure the activity of the isotope generator as a function of time immediately after elution.
- To measure the activity of a freshly eluted solution of Ba-137 m as a function of time.
Learning objectives
- Parent substance
- Daughter substance
- Rate of decay
- Disintegration or decay constant
- Counting rate
- Half life
- Disintegration product