<div>Dear all,</div>
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<div>The Doppler broadening effect is strongly dependent on both scattering medium and incidence particle energy.</div>
<div>EGS4+KEK extension, EGSnrc, GEANT4 include Doppler broadening effect. In the physics process of the GATE, the Compton formula is derived under the conditions that the electron is free and at rest. Therefore, it looks GATE does not include Doppler broadening. If I am wrong, please give me information regarding how to include Doppler broadening effect in GATE simulation.
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<div>Thank you for your help in advance.</div>
<div>Best,</div>
<div>Sang-June Park</div>