Technical data

Half-life and radioactive equilibrium with Cobra SMARTsense

Article no: P2520167

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Principle

The half-life of a Ba-137 m daughter substance eluted (washed) out of a Ca-137 isotope generator is measured directly and is also determined from the increase in activity after elution.

Tasks

To record the counting rate as a function of the counter tube voltage (counter tube characteristic) when the isotope generator activity is constant (radioactive equilibrium).
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

Cobra SMARTsense Radioactivity - Sensor for measuring radioactive radiation 0 ... 40000 #/min (Bluetooth + USB)	12937-02	1
Isotope generator Cs-137, 370 kBq	09047-60	1
Base plate for radioactivity	09200-00	1
Holder for SMARTsense counter tube on holding magnet	09207-00	1
Plate holder on fixing magnet	09203-00	1
Source holder on fixing magnet	09202-00	1
Test tube, Fiolax®, various lengths, 100 pcs.	36307-10	1
Rubber stoppers, without bore, various diameters	39253-00	1
measureLAB, multi-user license	14580-61	1