Gamma rays spectrum form Spontaneous fission of Cf-252

Physics Processes, Models and Cross Sections
1

Dear Geant4 experts,

I’m using Geant4 version 11.2 and would like to clarify the following regarding the G4RadioactiveDecayPhysics module and its use of ENSDF data:

  1. Does Geant4 reflect gamma de-excitations from daughter nuclei (including fission fragments) based on ENSDF after spontaneous fission, even if the fission fragments themselves are not explicitly created as particles?
  2. If fission fragment production and their beta-delayed gamma decays are not fully included, do I need to manually model or inject the beta decay chains of typical fission products (e.g., Ba-140, Kr-89) to obtain a more complete total gamma spectrum from spontaneous fission?

Thank you for your help.