| Geant4 Cross Reference |
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25 //
26 #include <cmath>
27 #include "G4Exp.hh"
28 #include "G4Log.hh"
29 #include "G4XpimNTotal.hh"
30 #include "G4SystemOfUnits.hh"
31
32 G4XpimNTotal::
33 G4XpimNTotal()
34 {
35 std::pair<double,double> it;
36 it.first=1105.46 ;it.second= 8.8; theLowED
37 it.first=1139.41 ;it.second= 13.6; theLowE
38 it.first=1165.12 ;it.second= 26.0; theLowE
39 it.first=1198.8 ;it.second= 60.; theLowED
40 it.first=1212.51 ;it.second= 70.; theLowED
41 it.first=1222.84 ;it.second= 72.; theLowED
42 it.first=1233.18 ;it.second= 68.; theLowED
43 it.first=1240.08 ;it.second= 65.; theLowED
44 it.first=1301.86 ;it.second= 30.; theLowED
45 it.first=1335.65 ;it.second= 26.; theLowED
46 it.first=1368.93 ;it.second= 27.; theLowED
47 it.first=1433.81 ;it.second= 30.; theLowED
48 it.first=1496.42 ;it.second= 45.; theLowED
49 it.first=1508.67 ;it.second= 47.; theLowED
50 it.first=1520.84 ;it.second= 45.; theLowED
51 it.first=1568.67 ;it.second= 35.; theLowED
52 it.first=1603.69 ;it.second= 37.; theLowED
53 it.first=1660.54 ;it.second= 58.; theLowED
54 it.first=1674.47 ;it.second= 59.; theLowED
55 it.first=1688.29 ;it.second= 58.; theLowED
56 it.first=1779.57 ;it.second= 36.; theLowED
57 it.first=1881.49 ;it.second= 36.8; theLowE
58 it.first=1978.31 ;it.second= 34.5; theLowE
59 it.first=2038.82 ;it.second= 34.5; theLowE
60 it.first=2115.39 ;it.second= 36.; theLowED
61 it.first=2159.18 ;it.second= 36.3; theLowE
62 it.first=2244.22 ;it.second= 36.; theLowED
63 it.first=2424.78 ;it.second= 33.; theLowED
64 it.first=2664.2 ;it.second= 32.; theLowED
65 it.first=3487.43 ;it.second= 28.; theLowED
66 it.first=4434.76 ;it.second= 26.7; theLowE
67 }
68
69 G4double G4XpimNTotal::
70 CrossSection(const G4KineticTrack& trk1, cons
71 {
72 G4double sqrts = (trk1.Get4Momentum() + trk
73 if(sqrts > theLowEData.back().first/MeV) re
74 G4double result = 0;
75 size_t i(0), it(0);
76 if(sqrts<theLowEData[0].first) return 0;
77 for(i=0; i<theLowEData.size(); i++)
78 {
79 if(theLowEData[i].first/MeV>sqrts) break;
80 it = i;
81 }
82 G4double x1 = G4Log(theLowEData[it].first);
83 G4double x2 = G4Log(theLowEData[it+1].first
84 G4double y1 = G4Log(theLowEData[it].second)
85 G4double y2 = G4Log(theLowEData[it+1].secon
86 G4double x = G4Log(sqrts);
87 G4double y = y1+(x-x1)*(y2-y1)/(x2-x1);
88 result = G4Exp(y);
89 return result*millibarn;
90 }
91