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