|Message: Re: dEStep||Not Logged In (login)|
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I am not completely qualified to answer this question. It is also better asked in the Electromagnetic Processes Forum.
The gamma itself does not lose energy to the medium (dEStep), unless it produces a charge particle (the recoil electron in the case of Compton scattering) below your range threshold. So, for a low threshold I would expect, as in 'compt', 0 dEStep. The recoil energy of the Compton electron is deposited when G4 in turn tracks it. I don't know why LowEmCompton deposits energy to the medium during the tracking step of the gamma. The energy balance (energy lost by all particles in an event) should come out the same regardless of whether you use LowEm or StandardEm.