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G4PhononScattering.cc
Go to the documentation of this file. Or view the newest version in sPHENIX GitHub for file G4PhononScattering.cc
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25 //
28 //
29 //
30 // 20131111 Add verbose output for MFP calculation
31 
32 #include "G4PhononScattering.hh"
33 #include "G4LatticePhysical.hh"
34 #include "G4PhononPolarization.hh"
35 #include "G4PhononLong.hh"
36 #include "G4PhononTrackMap.hh"
37 #include "G4PhononTransFast.hh"
38 #include "G4PhononTransSlow.hh"
39 #include "G4PhysicalConstants.hh"
40 #include "G4RandomDirection.hh"
41 #include "G4Step.hh"
42 #include "G4SystemOfUnits.hh"
43 #include "G4VParticleChange.hh"
44 #include "Randomize.hh"
45 
46 
48  : G4VPhononProcess(aName) {;}
49 
51 
52 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
53 
55  G4double /*previousStepSize*/,
57  //Dynamical constants retrieved from PhysicalLattice
59  G4double Eoverh = aTrack.GetKineticEnergy()/h_Planck;
60 
61  //Calculate mean free path
62  G4double mfp = aTrack.GetVelocity()/(Eoverh*Eoverh*Eoverh*Eoverh*B);
63 
64  if (verboseLevel > 1)
65  G4cout << "G4PhononScattering::GetMeanFreePath = " << mfp << G4endl;
66 
67  *condition = NotForced;
68 
69  return mfp;
70 }
71 
72 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
73 
75  const G4Step& aStep) {
76  G4StepPoint* postStepPoint = aStep.GetPostStepPoint();
77  if (postStepPoint->GetStepStatus()==fGeomBoundary) {
78  return G4VDiscreteProcess::PostStepDoIt(aTrack,aStep);
79  }
80 
81  //Initialize particle change
83 
84  //randomly generate a new direction and polarization state
86  G4int polarization = ChoosePolarization(theLattice->GetLDOS(),
88  theLattice->GetFTDOS());
89 
90  // Generate the new track after scattering
91  // FIXME: If polarization state is the same, just step the track!
92  G4Track* sec =
93  CreateSecondary(polarization, newDir, aTrack.GetKineticEnergy());
96 
97  // Scattered phonon replaces current track
100 
101  return &aParticleChange;
102 }
103 
104 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....