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.

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.


What you can learn about


Parent substance

Daughter substance

Rate of decay

Disintegration or decay constant

Counting rate

Half life

Disintegration product