Get a Gaussian Energy deposited Spectrum

[GuruKishore06]

So is there any other way to get a Gaussian kind of spectrum while decaying a source? Like tracking the energy deposited by secondaries something like that…

For example, how did they get such kind of spectrum in the following?

Simple Gamma Detection Simulation

Please fill out the following information to help in answering your question, and also see tips for posting code snippets. If you don’t provide this information it will take more time to help with your problem! Geant4 Version: 10.7.4 Operating System: RHEL9 Compiler/Version: 11.4.1 CMake Version: 3.20.2 I’ve simulated a Cs137 point source sitting next to a NaI crystal and recorded the energy deposited in the crystal to form an energy spectra. I’ve uploaded the results of the simulated energ…