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25 //
26
27 #ifndef G4ASTARStopping_h
28 #define G4ASTARStopping_h 1
29
30 //---------------------------------------------------------------------------
31 //
32 // ClassName: G4ASTARStopping
33 //
34 // Description: Data on stopping power
35 //
36 // Author: Anton Ivantchenko 21.04.2006
37 //
38 // Organisation: QinetiQ Ltd, UK
39 // Customer: ESA/ESTEC, NOORDWIJK
40 // Contract: CSMAN-5288
41 //
42 // Modifications:
43 //
44 //----------------------------------------------------------------------------
45 //
46 // Class Description:
47 //
48 // Data on Stopping Powers of the He atoms from the NIST Data Base
49 // http://physics.nist.gov/PhysRefData/STAR/Text/ASTAR.html
50 //
51 // Current ASTAR database is available via url:
52 // http://physics.nist.gov/PhysRefData/Star/Text/ASTAR.html
53
54 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
55
56 #include "globals.hh"
57 #include "G4Material.hh"
58 #include "G4PhysicsFreeVector.hh"
59 #include <vector>
60
61 class G4ASTARStopping
62 {
63 public:
64
65 explicit G4ASTARStopping();
66
67 ~G4ASTARStopping();
68
69 void Initialise();
70
71 inline G4int GetIndex(const G4Material*) const;
72
73 inline G4int GetIndex(const G4String&) const;
74
75 inline G4double GetElectronicDEDX(G4int idx, G4double energy) const;
76
77 inline G4double GetElectronicDEDX(const G4Material*, G4double energy) const;
78
79 // hide assignment operator
80 G4ASTARStopping & operator=(const G4ASTARStopping &right) = delete;
81 G4ASTARStopping(const G4ASTARStopping&) = delete;
82
83 private:
84
85 void AddData(const G4float* ss, const G4Material*);
86
87 void FindData(G4int idx, const G4Material*);
88
89 void PrintWarning(G4int idx) const;
90
91 G4int nvectors;
92 G4double emin;
93 std::vector<const G4Material*> materials;
94 std::vector<G4PhysicsFreeVector*> sdata;
95 };
96
97 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
98
99 inline G4int G4ASTARStopping::GetIndex(const G4Material* mat) const
100 {
101 G4int idx = -1;
102 for (G4int i=0; i<nvectors; ++i) {
103 if (mat == materials[i]) {
104 idx = i;
105 break;
106 }
107 }
108 return idx;
109 }
110
111 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
112
113 inline G4int G4ASTARStopping::GetIndex(const G4String& nam) const
114 {
115 G4int idx = -1;
116 for (G4int i=0; i<nvectors; ++i) {
117 if (nam == materials[i]->GetName()) {
118 idx = i;
119 break;
120 }
121 }
122 return idx;
123 }
124
125 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
126
127 inline G4double
128 G4ASTARStopping::GetElectronicDEDX(G4int idx, G4double energy) const
129 {
130 G4double res = 0.0;
131 if (idx<0 || idx >= nvectors) { PrintWarning(idx); }
132 if(energy < emin) { res = (*(sdata[idx]))[0]*std::sqrt(energy/emin); }
133 else { res = sdata[idx]->Value(energy); }
134 return res;
135 }
136
137 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
138
139 inline G4double
140 G4ASTARStopping::GetElectronicDEDX(const G4Material* mat, G4double energy) const
141 {
142 return GetElectronicDEDX(GetIndex(mat), energy);
143 }
144
145 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
146
147 #endif
148