Half-life and radioactive equilibrium

Article no. P2520102 | Type: Experiments

45 Minutes
45 Minutes
University
Teachers/Professors , Students
heavy

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

  1. To measure the activity of the isotope generator as a function of time immediately after elution.
  2. 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

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