Technical data

Half-life and radioactive equilibrium

Article no: P2520102

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> Unknown

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

Scope of delivery

Isotope generator Cs-137, 370 kBq	09047-60	1
Geiger-Müller Counter	13609-99	1
Geiger-Mueller counter tube, 15 mm (type B)	09005-00	1
Beakers, Boro, low form, various sizes	46054-00	2
Test tube, Fiolax®, various lengths, 100 pcs.	36307-10	1
Rubber stoppers, without bore, various diameters	39253-00	1
Base plate for radioactivity	09200-00	1
Specimen tube with holder	09203-01	1
Plate holder on fixing magnet	09203-00	1
Source holder on fixing magnet	09202-00	1