Plastic Scintillator Calculation
Below is the calculations done to determine the probability of pair production depending on thickness of the scintillator.
Molecules per(NOTE: is just the density of the scintillator material and N[A] is Avagodro's number)
Probability of interaction (%)
All cross sections listed here are pair production cross-sections
Density of polyvinyl toluene (a common scintillator material)
For the sample calculation the thickness will be set to 1 cm just to get probability per cm
So entering all the numbers into the 4 initial equations gives the following answers: