I am a newbie.
I want to get gamma attenuation data in geant 4 please explain the method fully as I am not professional like you
- Create gps → Your photon source (iso)
- Material in geometry → Your choice
- Detector → Your choice
- Physics → EMZ_op1
Place all in symmetry. Run simulation without point 2 and check the number of photons in the detectors. Now run simulation with point 2 and check number of photons in detectors.
use eq. I = Io exp(-ud)
There is an example which gives you this
TestEm0 prints out the mean free path, and from there you can calculate attenuation length.
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