| Geant4 Cross Reference |
1 // 1
2 // *******************************************
3 // * License and Disclaimer
4 // *
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17 // *
18 // * This code implementation is the result
19 // * technical work of the GEANT4 collaboratio
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21 // * any work based on the software) you ag
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23 // * acceptance of all terms of the Geant4 Sof
24 // *******************************************
25 //
26 //
27 // -------------------------------------------
28 // by J.P Wellisch, Sun Sep 15 2002.
29
30 #include "G4PiData.hh"
31 #include "G4SystemOfUnits.hh"
32
33 //////////////////////////////////////////////
34
35 G4PiData::G4PiData(const G4double * aT, const
36 const G4double * anE, G4int
37 {
38 for(G4int i = 0; i < nP; ++i )
39 {
40 std::pair<G4double, G4double> x;
41 x.first=aT[i]*millibarn;
42 x.second=aIn[i]*millibarn;
43 std::pair<G4double, std::pair<G4double, G4
44 aP.first=anE[i]*GeV;
45 aP.second=x;
46 push_back(aP);
47 if (i == 0) {
48 fMinE = aP.first;
49 fTot0 = x.first;
50 fInel0 = x.second;
51 } else if (i+1 == nP) {
52 fMaxE = aP.first;
53 fTot1 = x.first;
54 fInel1 = x.second;
55 }
56 }
57 }
58
59 //////////////////////////////////////////////
60
61 G4double G4PiData::ReactionXSection(G4double k
62 {
63 if (kineticEnergy <= fMinE) { return fInel0;
64 if (kineticEnergy >= fMaxE) { return fInel1;
65
66 G4PiData::iterator it=begin();
67 while(it!=end()&&kineticEnergy>(*it).first)
68 if(it==end())
69 {
70 G4ExceptionDescription ed;
71 ed << "This cross section is applied for E
72 << " outside allowed energy interval" <
73 G4Exception("G4PiData::ReactionXSection",
74 }
75 if(it==begin()) it++;
76 G4double x1,x2,e1,e2;
77 e1=(*(it-1)).first;
78 x1=(*(it-1)).second.second;
79 e2=(*(it)).first;
80 x2=(*(it)).second.second;
81 return std::max(0., x1 + (kineticEnergy-e1)*
82 }
83
84 //////////////////////////////////////////////
85
86 G4double G4PiData::ElasticXSection(G4double ki
87 {
88 if (kineticEnergy <= fMinE) { return fTot0 -
89 if (kineticEnergy >= fMaxE) { return fTot1 -
90
91 G4PiData::iterator it=begin();
92 while(it!=end()&&kineticEnergy>(*it).first)
93 if(it==end())
94 {
95 G4ExceptionDescription ed;
96 ed << "This cross section is applied for E
97 << " outside allowed energy interval" <
98 G4Exception("G4PiData::ElasticXSection", "
99 }
100 if(it==begin()) it++;
101 G4double x1,x2,e1,e2;
102 e1=(*(it-1)).first;
103 x1=(*(it-1)).second.first - (*(it-1)).second
104 e2=(*(it)).first;
105 x2=(*(it)).second.first - (*(it)).second.sec
106 return std::max(0., x1 + (kineticEnergy-e1)*
107 }
108
109 //////////////////////////////////////////////
110
111 G4double G4PiData::TotalXSection(G4double kine
112 {
113 if (kineticEnergy <= fMinE) { return fTot0;
114 if (kineticEnergy >= fMaxE) { return fTot1;
115
116 G4PiData::iterator it=begin();
117 while(it!=end()&&kineticEnergy>(*it).first)
118 if(it==end())
119 {
120 G4ExceptionDescription ed;
121 ed << "This cross section is applied for E
122 << " outside allowed energy interval" <
123 G4Exception("G4PiData::TotalXSection", "ha
124 }
125 if(it==begin()) it++;
126 G4double x1,x2,e1,e2;
127 e1=(*(it-1)).first;
128 x1=(*(it-1)).second.first;
129 e2=(*(it)).first;
130 x2=(*(it)).second.first;
131 return std::max(0., x1 + (kineticEnergy-e1)*
132 }
133