[Gate-users] characteristic rays

[hassan ouhadda]

hi Gaters;
please i can't have any characteristic rays in my  spectre?
i use this command in physics:
/gate/physics/addPhysicsList emstandard_opt3
/gate/physics/addProcess PhotoElectric gamma
/gate/physics/processes/PhotoElectric/setModel LivermoreModel.

thank you very much.
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