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1 // 1
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25 //
26 /// \file processes/phonon/src/G4PhononReflect
27 /// \brief Implementation of the G4PhononRefle
28 //
29 // This process handles the interaction of pho
30 // boundaries. Implementation of this class is
31 // geometry dependent.Currently, phonons are k
32 // they reach a boundary. If the other side of
33 // boundary was Al, a hit is registered.
34 //
35 //
36 // 20131115 Throw exception if track's polari
37
38 #include "G4PhononReflection.hh"
39 #include "G4ExceptionSeverity.hh"
40 #include "G4GeometryTolerance.hh"
41 #include "G4LatticePhysical.hh"
42 #include "G4PhononLong.hh"
43 #include "G4PhononTransFast.hh"
44 #include "G4PhononTransSlow.hh"
45 #include "G4PhysicalConstants.hh"
46 #include "G4Step.hh"
47 #include "G4StepPoint.hh"
48 #include "G4SystemOfUnits.hh"
49 #include "G4VParticleChange.hh"
50
51
52 G4PhononReflection::G4PhononReflection(const G
53 : G4VPhononProcess(aName),
54 kCarTolerance(G4GeometryTolerance::GetInst
55
56 G4PhononReflection::~G4PhononReflection() {;}
57
58 //....oooOO0OOooo........oooOO0OOooo........oo
59
60 // Always return DBL_MAX and Forced. This ensu
61 // called at the end of every step. In PostSte
62 // decides whether the step encountered a volu
63 // reflection should be applied
64
65 G4double G4PhononReflection::GetMeanFreePath(c
66 G4ForceCondition* condition) {
67 *condition = Forced;
68 return DBL_MAX;
69 }
70
71 //....oooOO0OOooo........oooOO0OOooo........oo
72
73 // This process handles the interaction of pho
74 // boundaries. Implementation of this class is
75 // dependent.Currently, phonons are killed whe
76 // boundary. If the other side of the boundary
77 // registered.
78
79 G4VParticleChange* G4PhononReflection::PostSte
80 const G4Step& aStep) {
81 aParticleChange.Initialize(aTrack);
82
83 //Check if current step is limited by a volu
84 G4StepPoint* postStepPoint = aStep.GetPostSt
85 if (postStepPoint->GetStepStatus()!=fGeomBou
86 //make sure that correct phonon velocity i
87 int pol = GetPolarization(aTrack);
88 if (pol < 0 || pol > 2) {
89 G4Exception("G4PhononReflection::PostSte
90 EventMustBeAborted, "Track is not a phon
91 return &aParticleChange; // NOTE: Wil
92 }
93
94 // FIXME: This should be using wave-vecto
95 G4double vg = theLattice->MapKtoV(pol, aTr
96
97 //Since step was not a volume boundary, ju
98 aParticleChange.ProposeVelocity(vg);
99 return &aParticleChange;
100 }
101
102 // do nothing but return is the step is too
103 // This is to allow actual reflection where
104 // the first boundary crossing a second, inf
105 // step occurs crossing back into the origin
106 if (aTrack.GetStepLength()<=kCarTolerance/2)
107 return &aParticleChange;
108 }
109
110 G4double eKin = aTrack.GetKineticEnergy();
111 aParticleChange.ProposeNonIonizingEnergyDepo
112 aParticleChange.ProposeTrackStatus(fStopAndK
113
114 return &aParticleChange;
115 }
116
117 //....oooOO0OOooo........oooOO0OOooo........oo
118
119
120