# Difference between revisions of "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 Avogadro's number)

Molecules per

Weighted cross-section

Probability of interaction (%)

All cross sections listed here are pair production cross-sections

For carbon or

For carbon or

For hydrogen or

For hydrogen or

Density of polyvinyl toluene (a common scintillator material)

or is it   H/C = 11/10(TF)


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:

Molecules per

Molecules per

Weighted cross-section

Probability of interaction (%)