4.10.4

Patch-1 Patch-2 Patch-3

Additional information of note

• Sneaky change in Geant4.10.4 to final range parameter on emstandard_option2 which cascades to option4. This changes the final step of a trajectory and, in part, is a cause for the differences in 10.1 and 10.4-based MC data

  • As of Geant4.10.5 the final step of muons and hadrons may be altered in the UI (G4MuHad), this was not possible when first investigating this as a potential issue (as of writing this has not been re-investigated)

• Diffraction for compounds A>10 (includes graphite and tungsten targets obviously) is switched off by default from geant4.10.5 (not noted in change logs).

  • Empirical motivation against this from NA61/SHINE data <200b>https://bugzilla-geant4.kek.jp/show_bug.cgi?id=2360
  • As of writing this, this has not been investigated

Logs

• Basic functionality of handling muonic atom is introduced. To use this functionality, G4MUATOMS_INUSE option has to be set at installation.

• Low Energy

  • New Monash Compton model G4LowEPPolarizedComptonModel including polarization.

  • Migrated G4LowEPComptonModel to multi-threading.

  • G4MicroElecElastic , G4MicroElecInelastic : fixed definition of default models at initialisation; by default use G4DummyModel .

  • G4UAtomicDeexcitation : added optional implementation of Auger cascade, based on proposal by B.Suerfu (see problem report #1727).

  • G4LowECapture : added capture process needed for MicroElec and DNA applications.

  • G4AtomicTransitionManager : improved Exception printout.

  • Fixed issue of over-generation of atomic deexcitation in PenelopeIonisation model when PIXE activated. Addressing problem report #1761.

  • Fixed cross-section names in G4UAtomicDeexcitation , G4empCrossSection and G4teoCrossSection .

  • G4PenelopeIonisationModel : use G4EmParameters.

  • Migrated MT-compliant Livermore polarized models for gammas.

  • Upgraded models for pair and triplet production.

  • Replaced G4Exception in G4PenelopeIonisationModel with printout.

  • G4LivermoreIonisationModel : increased intrinsic low limit from 10 eV to 12 eV.

  • G4UAtomDeexcitation : comment out unnecessary G4Exceptions.