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>> 27 // $Id: G4CollisionNN.cc,v 1.3.2.2 2006/06/29 20:37:30 gunter Exp $ //
27 28
28 29
29 #include "globals.hh" 30 #include "globals.hh"
30 #include "G4CollisionNN.hh" 31 #include "G4CollisionNN.hh"
31 #include "G4CollisionComposite.hh" 32 #include "G4CollisionComposite.hh"
32 #include "G4VCollision.hh" 33 #include "G4VCollision.hh"
33 #include "G4CollisionVector.hh" 34 #include "G4CollisionVector.hh"
34 #include "G4KineticTrack.hh" 35 #include "G4KineticTrack.hh"
35 #include "G4VCrossSectionSource.hh" 36 #include "G4VCrossSectionSource.hh"
36 #include "G4XNNTotal.hh" 37 #include "G4XNNTotal.hh"
37 #include "G4Proton.hh" 38 #include "G4Proton.hh"
38 #include "G4Neutron.hh" 39 #include "G4Neutron.hh"
39 #include "G4CollisionNNElastic.hh" 40 #include "G4CollisionNNElastic.hh"
40 #include "G4CollisionnpElastic.hh" 41 #include "G4CollisionnpElastic.hh"
41 #include "G4CollisionNNToNDelta.hh" 42 #include "G4CollisionNNToNDelta.hh"
42 #include "G4CollisionNNToDeltaDelta.hh" 43 #include "G4CollisionNNToDeltaDelta.hh"
43 #include "G4CollisionNNToNDeltastar.hh" 44 #include "G4CollisionNNToNDeltastar.hh"
44 #include "G4CollisionNNToDeltaDeltastar.hh" 45 #include "G4CollisionNNToDeltaDeltastar.hh"
45 #include "G4CollisionNNToNNstar.hh" 46 #include "G4CollisionNNToNNstar.hh"
46 #include "G4CollisionNNToDeltaNstar.hh" 47 #include "G4CollisionNNToDeltaNstar.hh"
47 #include "G4Pair.hh" 48 #include "G4Pair.hh"
48 49
49 typedef GROUP8(G4CollisionnpElastic, G4Collisi 50 typedef GROUP8(G4CollisionnpElastic, G4CollisionNNElastic,
50 G4CollisionNNToNDelta, G4Collisi 51 G4CollisionNNToNDelta, G4CollisionNNToDeltaDelta,
51 G4CollisionNNToNDeltastar, G4Collision 52 G4CollisionNNToNDeltastar, G4CollisionNNToDeltaDeltastar,
52 G4CollisionNNToNNstar, G4CollisionNNTo 53 G4CollisionNNToNNstar, G4CollisionNNToDeltaNstar) theChannels;
53 54
54 G4CollisionNN::G4CollisionNN() 55 G4CollisionNN::G4CollisionNN()
55 { 56 {
56 components=0; <<
57 crossSectionSource = new G4XNNTotal(); 57 crossSectionSource = new G4XNNTotal();
58 G4CollisionComposite::Register aR; 58 G4CollisionComposite::Register aR;
59 G4ForEach<theChannels>::Apply(&aR, this); 59 G4ForEach<theChannels>::Apply(&aR, this);
60 } 60 }
61 61
62 62
63 G4CollisionNN::~G4CollisionNN() 63 G4CollisionNN::~G4CollisionNN()
64 { 64 {
65 if (components) { <<
66 delete components; <<
67 components=0; <<
68 } <<
69 delete crossSectionSource; 65 delete crossSectionSource;
70 crossSectionSource = 0; 66 crossSectionSource = 0;
71 } 67 }
72 68
73 69
74 const std::vector<G4String>& G4CollisionNN::Ge 70 const std::vector<G4String>& G4CollisionNN::GetListOfColliders(G4int ) const
75 { 71 {
76 throw G4HadronicException(__FILE__, __LINE 72 throw G4HadronicException(__FILE__, __LINE__, "G4CollisionNN::GetListOfColliders - Argument outside valid range");
77 return colliders1; 73 return colliders1;
78 } 74 }
79 75
80 76
81 G4double G4CollisionNN::CrossSection(const G4K 77 G4double G4CollisionNN::CrossSection(const G4KineticTrack& aTrk1,
82 const G4KineticTrack& aTrk2) const 78 const G4KineticTrack& aTrk2) const
83 { 79 {
84 G4double sigma = 0.; 80 G4double sigma = 0.;
85 81
86 // nucleon-nucleon cross-sections made for o 82 // nucleon-nucleon cross-sections made for on-shell particles.
87 // here we take the kinetic energy as the qu 83 // here we take the kinetic energy as the quantity relevant
88 // for calculating the scattering cross-sect 84 // for calculating the scattering cross-sections for off-shell hadrons
89 85
90 const G4VCrossSectionSource* xSource = GetCr 86 const G4VCrossSectionSource* xSource = GetCrossSectionSource();
91 G4LorentzVector p1 = aTrk1.Get4Momentum(); 87 G4LorentzVector p1 = aTrk1.Get4Momentum();
92 G4LorentzVector p2 = aTrk2.Get4Momentum(); 88 G4LorentzVector p2 = aTrk2.Get4Momentum();
93 G4double t1 = p1.e()-aTrk1.GetActualMass(); 89 G4double t1 = p1.e()-aTrk1.GetActualMass();
94 G4double t2 = p2.e()-aTrk2.GetActualMass(); 90 G4double t2 = p2.e()-aTrk2.GetActualMass();
95 p1.setE(t1+aTrk1.GetDefinition()->GetPDGMass 91 p1.setE(t1+aTrk1.GetDefinition()->GetPDGMass());
96 p2.setE(t2+aTrk2.GetDefinition()->GetPDGMass 92 p2.setE(t2+aTrk2.GetDefinition()->GetPDGMass());
97 G4KineticTrack trk1(aTrk1); 93 G4KineticTrack trk1(aTrk1);
98 trk1.Set4Momentum(p1); 94 trk1.Set4Momentum(p1);
99 G4KineticTrack trk2(aTrk2); 95 G4KineticTrack trk2(aTrk2);
100 trk2.Set4Momentum(p2); 96 trk2.Set4Momentum(p2);
101 if( (p1+p2).mag()<aTrk1.GetDefinition()->Get 97 if( (p1+p2).mag()<aTrk1.GetDefinition()->GetPDGMass()+aTrk2.GetDefinition()->GetPDGMass())
102 { 98 {
103 return 0.; 99 return 0.;
104 } 100 }
105 101
106 if (xSource != 0) 102 if (xSource != 0)
107 { 103 {
108 // There is a cross section for this Col 104 // There is a cross section for this Collision
109 sigma = xSource->CrossSection(trk1,trk2) 105 sigma = xSource->CrossSection(trk1,trk2);
110 } 106 }
111 return sigma; 107 return sigma;
112 } 108 }
113 109
114 110