Question

what would be the two experimental error when finding mass attenuation coefficient of lead using geiger counter.

Answer 1

1.We know that if a radiation event is detected after the dead time but before the end of the recovery time, the pulse height will have a smaller amplitude than usual. This will also attribute to some of the fluctuations in the pulse heights that we saw.

2.The randomness of the quench gas molecules in the G-M tube can effect the distribution of pulse heights, albeit very slightly. The clustering of positive heavy ions inside the tube that ultimately terminate the avalanching effect can cause a delay in them doing so. This would result in slightly larger pulse heights.