Low Backaround Alpha/Beta Countina System
This counting system is used to measure the total activities oT alpha/bela sources in samples such as drinking water, mineral water. smear test and soil. This system comprises of gas flow proportional detector filled with a mixture of methane and argon. Every alpha/beta particle emitted from the sample will cause the ionisation of gas molecules in the detector chamber which generate an electrical pulse that is converted into count rate.