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>> 1 // This code implementation is the intellectual property of
>> 2 // the GEANT4 collaboration.
1 // 3 //
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15 // * use. Please see the license in the file <<
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17 // * <<
18 // * This code implementation is the result <<
19 // * technical work of the GEANT4 collaboratio <<
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25 // <<
26 // 7 //
>> 8 // $Id: G4Decay.hh,v 1.3 1999/12/15 14:51:27 gunter Exp $
>> 9 // GEANT4 tag $Name: geant4-02-00 $
27 // 10 //
28 // 11 //
29 // ------------------------------------------- 12 // ------------------------------------------------------------
30 // GEANT 4 class header file 13 // GEANT 4 class header file
31 // 14 //
>> 15 // For information related to this code contact:
>> 16 // CERN, CN Division, ASD group
32 // History: first implementation, based o 17 // History: first implementation, based on object model of
33 // 7 July 1996 H.Kurashige 18 // 7 July 1996 H.Kurashige
34 // ------------------------------------------- 19 // ------------------------------------------------------------
35 // New Physics scheme 18 Jan. 1997 20 // New Physics scheme 18 Jan. 1997 H.Kurahige
36 // ------------------------------------------- 21 // ------------------------------------------------------------
37 // modified 4 Feb. 1997 22 // modified 4 Feb. 1997 H.Kurahige
38 // modified 8 Sep. 1997 23 // modified 8 Sep. 1997 H.Kurahige
39 // remove BuildPhysicsTable() 27 Nov. 1997 24 // remove BuildPhysicsTable() 27 Nov. 1997 H.Kurashige
40 // modified for new ParticleChange 12 Mar. 1 25 // modified for new ParticleChange 12 Mar. 1998 H.Kurashige
41 // added aPhysicsTable 2 Aug. 1998 26 // added aPhysicsTable 2 Aug. 1998 H.Kurashige
42 // PreAssignedDecayTime 18 Jan. 2001 <<
43 // Add External Decayer 23 Feb. 2001 <<
44 // Remove PhysicsTable 12 Feb. 2002 <<
45 // Fixed bug in PostStepGPIL <<
46 // in case of stopping during AlongStepDoIt <<
47 // Add GetRemainderLifeTime 10 Aug/2004 H.K <<
48 // Add DaughterPolarization 23 July 2008 <<
49 <<
50 27
51 #ifndef G4Decay_h 28 #ifndef G4Decay_h
52 #define G4Decay_h 1 29 #define G4Decay_h 1
53 30
54 #include "G4ios.hh" 31 #include "G4ios.hh"
55 #include "globals.hh" 32 #include "globals.hh"
56 #include "G4VRestDiscreteProcess.hh" 33 #include "G4VRestDiscreteProcess.hh"
57 #include "G4ParticleChangeForDecay.hh" 34 #include "G4ParticleChangeForDecay.hh"
58 #include "G4DecayProcessType.hh" <<
59 <<
60 class G4VExtDecayer; <<
61 35
62 class G4Decay : public G4VRestDiscreteProcess 36 class G4Decay : public G4VRestDiscreteProcess
63 { 37 {
64 // Class Description <<
65 // This class is a decay process <<
66 <<
67 public: 38 public:
68 // Constructors 39 // Constructors
69 G4Decay(const G4String& processName ="Deca 40 G4Decay(const G4String& processName ="Decay");
70 41
71 // Destructor 42 // Destructor
72 virtual ~G4Decay(); 43 virtual ~G4Decay();
73 44
74 private: 45 private:
75 // copy constructor 46 // copy constructor
76 G4Decay(const G4Decay &right); 47 G4Decay(const G4Decay &right);
77 48
78 // Assignment Operation (generated) 49 // Assignment Operation (generated)
79 G4Decay & operator=(const G4Decay &right 50 G4Decay & operator=(const G4Decay &right);
80 51
81 public: //With Description << 52 public:
82 // G4Decay Process has both 53 // G4Decay Process has both
83 // PostStepDoIt (for decay in flight) 54 // PostStepDoIt (for decay in flight)
84 // and 55 // and
85 // AtRestDoIt (for decay at rest) 56 // AtRestDoIt (for decay at rest)
86 57
87 virtual G4VParticleChange *PostStepDoIt( 58 virtual G4VParticleChange *PostStepDoIt(
88 const G4Track& aTrack, 59 const G4Track& aTrack,
89 const G4Step& aSt 60 const G4Step& aStep
90 ) override; << 61 );
91 62
92 virtual G4VParticleChange* AtRestDoIt( 63 virtual G4VParticleChange* AtRestDoIt(
93 const G4Track& aTrack, 64 const G4Track& aTrack,
94 const G4Step& aStep 65 const G4Step& aStep
95 ) override; << 66 );
96 67
97 virtual void BuildPhysicsTable(const G4Pa << 68 virtual void BuildPhysicsTable(const G4ParticleDefinition&);
98 // In G4Decay, thePhysicsTable stores val 69 // In G4Decay, thePhysicsTable stores values of
99 // beta * std::sqrt( 1 - beta*beta) << 70 // beta * sqrt( 1 - beta*beta)
100 // as a function of normalized kinetic en 71 // as a function of normalized kinetic enregy (=Ekin/mass),
101 // becasuse this table is universal for a 72 // becasuse this table is universal for all particle types,
102 73
103 74
104 virtual G4bool IsApplicable(const G4Partic << 75 virtual G4bool IsApplicable(const G4ParticleDefinition&);
105 // returns "true" if the decay process can 76 // returns "true" if the decay process can be applied to
106 // the particle type. 77 // the particle type.
107 78
108 protected: // With Description << 79 protected:
109 virtual G4VParticleChange* DecayIt( 80 virtual G4VParticleChange* DecayIt(
110 const G4Track& aTrack, 81 const G4Track& aTrack,
111 const G4Step& aStep 82 const G4Step& aStep
112 ); 83 );
113 // The DecayIt() method returns by pointer 84 // The DecayIt() method returns by pointer a particle-change object,
114 // which has information of daughter parti 85 // which has information of daughter particles.
115 86
116 // Set daughter polarization << 87 public:
117 // NO OPERATION in the base class of G4De <<
118 virtual void DaughterPolarization(const G4 <<
119 G4DecayProducts* products); <<
120 <<
121 public: <<
122 virtual G4double AtRestGetPhysicalInteract 88 virtual G4double AtRestGetPhysicalInteractionLength(
123 const G4Track& tr 89 const G4Track& track,
124 G4ForceCondition* 90 G4ForceCondition* condition
125 ) override; << 91 );
126 <<
127 virtual G4double PostStepGetPhysicalIntera <<
128 const G4Track& tr <<
129 G4double previo <<
130 G4ForceCondition* <<
131 ) override; <<
132 92
133 protected: // With Description << 93 protected:
134 // GetMeanFreePath returns ctau*beta*gamma 94 // GetMeanFreePath returns ctau*beta*gamma for decay in flight
135 // GetMeanLifeTime returns ctau for decay 95 // GetMeanLifeTime returns ctau for decay at rest
136 virtual G4double GetMeanFreePath(const G4T 96 virtual G4double GetMeanFreePath(const G4Track& aTrack,
137 G4double previ 97 G4double previousStepSize,
138 G4ForceCondition 98 G4ForceCondition* condition
139 ) override; << 99 );
140 100
141 virtual G4double GetMeanLifeTime(const G4T 101 virtual G4double GetMeanLifeTime(const G4Track& aTrack,
142 G4ForceCondition 102 G4ForceCondition* condition
143 ) override; << 103 );
144 <<
145 public: //With Description <<
146 virtual void StartTracking(G4Track*) over <<
147 virtual void EndTracking() override; <<
148 // inform Start/End of tracking for each <<
149 <<
150 public: //With Description <<
151 void SetExtDecayer(G4VExtDecayer*); <<
152 const G4VExtDecayer* GetExtDecayer() cons <<
153 // Set/Get External Decayer <<
154 <<
155 G4double GetRemainderLifeTime() const; <<
156 //Get Remainder of life time at rest decay <<
157 104
158 virtual void ProcessDescription(std::ostre << 105 public:
159 // << 106 void SetVerboseLevel(G4int value);
>> 107 G4int GetVerboseLevel() const;
160 108
161 protected: << 109 private:
162 G4int verboseLevel; 110 G4int verboseLevel;
163 // controle flag for output message 111 // controle flag for output message
164 // 0: Silent 112 // 0: Silent
165 // 1: Warning message 113 // 1: Warning message
166 // 2: More 114 // 2: More
167 115
168 protected: << 116 private:
169 // HighestValue. << 117 // In G4Decay, thePhysicsTable stores values of
170 const G4double HighestValue; << 118 // beta * sqrt( 1 - beta*beta)
>> 119 // as a function of normalized kinetic enregy (=Ekin/mass)
>> 120 // TotBin = number of bins in thePhysicsTable
>> 121 // The PhysicsTable is created for the range of
>> 122 // from LowestBinValue to HighestBinValue.
>> 123 const G4double LowestBinValue;
>> 124 const G4double HighestBinValue;
>> 125 const G4int TotBin;
>> 126
>> 127 G4PhysicsTable* aPhysicsTable;
171 128
172 // Remainder of life time at rest 129 // Remainder of life time at rest
173 G4double fRemainderLifeTim 130 G4double fRemainderLifeTime;
174 << 131
175 // ParticleChange for decay process 132 // ParticleChange for decay process
176 G4ParticleChangeForDecay fParticleChangeFo 133 G4ParticleChangeForDecay fParticleChangeForDecay;
177 <<
178 // External Decayer <<
179 G4VExtDecayer* pExtDecayer; <<
180 }; 134 };
181 135
>> 136 inline
>> 137 G4double G4Decay::AtRestGetPhysicalInteractionLength(
>> 138 const G4Track& track,
>> 139 G4ForceCondition* condition
>> 140 )
>> 141 {
>> 142 fRemainderLifeTime =
>> 143 G4VRestDiscreteProcess::AtRestGetPhysicalInteractionLength(
>> 144 track, condition );
>> 145 return fRemainderLifeTime;
>> 146 }
>> 147
>> 148 inline
>> 149 void G4Decay::SetVerboseLevel(G4int value){ verboseLevel = value; }
>> 150
>> 151 inline
>> 152 G4int G4Decay::GetVerboseLevel() const { return verboseLevel; }
>> 153
182 inline 154 inline
183 G4VParticleChange* G4Decay::AtRestDoIt( 155 G4VParticleChange* G4Decay::AtRestDoIt(
184 const G4Track& aTrack, 156 const G4Track& aTrack,
185 const G4Step& aStep 157 const G4Step& aStep
186 ) 158 )
187 { 159 {
188 return DecayIt(aTrack, aStep); 160 return DecayIt(aTrack, aStep);
189 } 161 }
190 162
191 << 163 inline
192 inline << 164 G4VParticleChange* G4Decay::PostStepDoIt(
193 const G4VExtDecayer* G4Decay::GetExtDecayer() << 165 const G4Track& aTrack,
>> 166 const G4Step& aStep
>> 167 )
194 { 168 {
195 return pExtDecayer; << 169 return DecayIt(aTrack, aStep);
196 } 170 }
197 171
198 inline <<
199 G4double G4Decay::GetRemainderLifeTime() cons <<
200 { <<
201 return fRemainderLifeTime; <<
202 } <<
203 172
204 #endif 173 #endif
205 174
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215 184