- #1
Getterdog
- 83
- 6
This may be a pretty basic question ,but i'll through it out any way. As a project i built a muon detector from 2 matched PMTs and 2 4x6x1 plastic PVT scintillators. And pulse processing NIM modules. I was getting pretty good coincidence reading,some what less than predicted.ie ( 1 count/sqcm/min) However ,when I wanted to calibrate by using a small sample on strontium 90 (.5Mev beta ) i get no signal anywhere. I made sure there was no obstruction between it and the scintillator. Now from what i understand the average muon
energy at Earth surface is around 2Gev. I am assuming the beta fully is stopped by the scintillator. I am not sure the bethe bloch formula is valid for the speed of the beta, So where should i be looking for this signal?
Should the gain be turned way down to see the beta? I am trying to get an idea of where the strontium signal is compared to the muons. Thanks j
energy at Earth surface is around 2Gev. I am assuming the beta fully is stopped by the scintillator. I am not sure the bethe bloch formula is valid for the speed of the beta, So where should i be looking for this signal?
Should the gain be turned way down to see the beta? I am trying to get an idea of where the strontium signal is compared to the muons. Thanks j