Import Geant4 11.0.2 source tree

source/physics_lists/constructors/electromagnetic/History

@@ -13,6 +13,10 @@ introduced in the code and keeptrack of all tags.
      * Reverse chronological order (last date on top), please *
      ----------------------------------------------------------
 
+24 February 2022, V.Ivanchenko (phys-ctor-em-V10-07-25)
+- G4EmStandardPhysics_option4 - use G4UrbanFluctuation model 
+    for e+- to address problem #2466
+
 11 December 2021, V.Ivanchenko (phys-ctor-em-V10-07-24)
 - G4EmStandardPhysics_option3 - use options providing more accurate 
     simulation without loss of CPU performance: RangeFactor=0.03,

source/physics_lists/constructors/electromagnetic/src/G4EmStandardPhysics_option4.cc

@@ -79,6 +79,7 @@
 #include "G4LivermoreIonisationModel.hh"
 #include "G4PenelopeIonisationModel.hh"
 #include "G4UniversalFluctuation.hh"
+#include "G4UrbanFluctuation.hh"
 
 #include "G4eplusAnnihilation.hh"
 
@@ -244,6 +245,7 @@ void G4EmStandardPhysics_option4::ConstructProcess()
   // ionisation
   G4eIonisation* eioni = new G4eIonisation();
   G4VEmModel* theIoniLiv = new G4LivermoreIonisationModel();
+  eioni->SetFluctModel(new G4UrbanFluctuation());
   theIoniLiv->SetHighEnergyLimit(0.1*CLHEP::MeV); 
   eioni->AddEmModel(0, theIoniLiv, new G4UniversalFluctuation() );
 
@@ -289,6 +291,7 @@ void G4EmStandardPhysics_option4::ConstructProcess()
 
   // ionisation
   eioni = new G4eIonisation();
+  eioni->SetFluctModel(new G4UrbanFluctuation());
   G4VEmModel* pen = new G4PenelopeIonisationModel();
   pen->SetHighEnergyLimit(0.1*CLHEP::MeV);
   eioni->AddEmModel(0, pen, new G4UniversalFluctuation());