Analyse the radioactivity of the provided mineral powder. What kind of radiation can be detected? Define the ratio of the measurable intensity of these radiation types. Geiger counter is provided. You will have 80 minutes to complete this exercise. The cling film covering of the powder must not be removed.

Determine as accurately as possible the half-life of the radioactive material in the solution provided. You will have 40 minutes to complete the task then you should pass the hypodermic syringe to an other participant. Geiger counter is available.

An end-window G-M tube radiation monitor is available for the measurements. The device can be used on its own or it can be connected to a computer.

When used on its own the measurement can be started by pushing the Start/Reset – Stop button (this way before starting the new measurement the device automatically deletes the previous indication of the counter). When pushing the button repeatedly the measurement stops. The device does not have its own timing mechanism.

When the device is connected to the computer you can give the measuring time in the computer in seconds. When the defined measuring time has passed the computer displays the time and the measured counts on the monitor and immediately restarts the measurement.

The hypodermic syringe containing the white material should be placed in the provided longish plastic vessel and using the other hypodermic syringe fill in approximately 1 ml solution. The liquid that flew through can be used for the measurement. Please spare the solution, you can reuse the same solution. Please collect the used liquid in the vessel provided in the room.