1 | // |
---|
2 | // ******************************************************************** |
---|
3 | // * License and Disclaimer * |
---|
4 | // * * |
---|
5 | // * The Geant4 software is copyright of the Copyright Holders of * |
---|
6 | // * the Geant4 Collaboration. It is provided under the terms and * |
---|
7 | // * conditions of the Geant4 Software License, included in the file * |
---|
8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
---|
9 | // * include a list of copyright holders. * |
---|
10 | // * * |
---|
11 | // * Neither the authors of this software system, nor their employing * |
---|
12 | // * institutes,nor the agencies providing financial support for this * |
---|
13 | // * work make any representation or warranty, express or implied, * |
---|
14 | // * regarding this software system or assume any liability for its * |
---|
15 | // * use. Please see the license in the file LICENSE and URL above * |
---|
16 | // * for the full disclaimer and the limitation of liability. * |
---|
17 | // * * |
---|
18 | // * This code implementation is the result of the scientific and * |
---|
19 | // * technical work of the GEANT4 collaboration. * |
---|
20 | // * By using, copying, modifying or distributing the software (or * |
---|
21 | // * any work based on the software) you agree to acknowledge its * |
---|
22 | // * use in resulting scientific publications, and indicate your * |
---|
23 | // * acceptance of all terms of the Geant4 Software license. * |
---|
24 | // ******************************************************************** |
---|
25 | // |
---|
26 | // File name: G4PiMinusStopLi |
---|
27 | // |
---|
28 | // Author: Maria Grazia Pia (pia@genova.infn.it) |
---|
29 | // |
---|
30 | // Creation date: 8 May 1998 |
---|
31 | // |
---|
32 | // ------------------------------------------------------------------- |
---|
33 | |
---|
34 | #include "G4ios.hh" |
---|
35 | |
---|
36 | #include "G4PiMinusStopLi.hh" |
---|
37 | |
---|
38 | #include <vector> |
---|
39 | |
---|
40 | #include "globals.hh" |
---|
41 | #include "Randomize.hh" |
---|
42 | #include "G4Proton.hh" |
---|
43 | #include "G4Neutron.hh" |
---|
44 | #include "G4ParticleTypes.hh" |
---|
45 | #include "G4ReactionKinematics.hh" |
---|
46 | #include "G4DynamicParticleVector.hh" |
---|
47 | #include "G4LorentzVector.hh" |
---|
48 | #include "G4PiMinusStopMaterial.hh" |
---|
49 | #include "G4DistributionGenerator.hh" |
---|
50 | |
---|
51 | // np/pp production ratio |
---|
52 | // Experimental values: |
---|
53 | // R(np/pp) = 6.3 +- 1.4 (P.Heusi et al., Nucl. Phys. A407 (1983) 429 |
---|
54 | G4double G4PiMinusStopLi::npRatio = 6.3; |
---|
55 | |
---|
56 | // Average numbers of final nucleons detected, for N-pair absorption |
---|
57 | // (P.Heusi et al., Nucl. Phys. A407 (1983) 429 |
---|
58 | G4double G4PiMinusStopLi::nFinalNucleons = 1.9; |
---|
59 | |
---|
60 | // Kinetic energy (MeV) distributions measured for coincident nucleon |
---|
61 | // emission |
---|
62 | // P. Heusi et al., Nucl. Phys. A407(1983) 429 |
---|
63 | |
---|
64 | G4int G4PiMinusStopLi::eKinEntries = 21; |
---|
65 | |
---|
66 | G4double G4PiMinusStopLi::eKinData[21] = { 0.0018, 0.0025, 0.003, 0.045, |
---|
67 | 0.007, 0.014, 0.023, |
---|
68 | 0.4, 0.09, 0.18, |
---|
69 | 0.25, 0.3, 0.25, 0.2, |
---|
70 | 0.18, 0.08, 0.05, |
---|
71 | 0.023, 0.012, 0.007, 0.02}; |
---|
72 | |
---|
73 | G4double G4PiMinusStopLi::eKin[22] = { 15., 17.5, 22.5, 27.5, |
---|
74 | 32.5, 37.5, 42.5, |
---|
75 | 47.5, 52.5, 57.5, |
---|
76 | 62.5, 67.5, 72.5, 77.5, |
---|
77 | 82.5, 87.5, 92.5, |
---|
78 | 97.5, 102.5, 105. }; |
---|
79 | |
---|
80 | |
---|
81 | // Opening angle distributions measured for coincident nucleon emission |
---|
82 | // (P.Heusi et al., Nucl. Phys. A407 (1983) 429 |
---|
83 | |
---|
84 | G4int G4PiMinusStopLi::angleEntries = 7; |
---|
85 | |
---|
86 | G4double G4PiMinusStopLi::angleData[7] = |
---|
87 | { 0.17, 0.4, 0.7, 1.1, 1.3, 20., 70. }; |
---|
88 | |
---|
89 | G4double G4PiMinusStopLi::angle[8] = { 1.308997, 1.570796, 1.832596, 2.094395, |
---|
90 | 2.356194, 2.617994, 2.967060, 3.1415927 }; |
---|
91 | |
---|
92 | |
---|
93 | |
---|
94 | // Constructor |
---|
95 | |
---|
96 | G4PiMinusStopLi::G4PiMinusStopLi() |
---|
97 | |
---|
98 | { |
---|
99 | // Cluster size: nucleon pair, alpha, triton etc. |
---|
100 | // First implementation: interaction with nucleon pair only |
---|
101 | _clusterSize = 2; |
---|
102 | |
---|
103 | // R ratio |
---|
104 | theR = 1. / (1. + npRatio); |
---|
105 | |
---|
106 | _definitions = new std::vector<G4ParticleDefinition*>(); |
---|
107 | _momenta = new std::vector<G4LorentzVector*>(); |
---|
108 | |
---|
109 | std::vector<double> eKinVector; |
---|
110 | std::vector<double> eKinDataVector; |
---|
111 | int i; |
---|
112 | for (i=0; i<eKinEntries; i++) |
---|
113 | { |
---|
114 | eKinVector.push_back(eKin[i]); |
---|
115 | eKinDataVector.push_back(eKinData[i]); |
---|
116 | } |
---|
117 | eKinVector.push_back(eKin[eKinEntries]); |
---|
118 | _distributionE = new G4DistributionGenerator(eKinVector,eKinDataVector); |
---|
119 | |
---|
120 | std::vector<double> angleVector; |
---|
121 | std::vector<double> angleDataVector; |
---|
122 | for (i=0; i<angleEntries; i++) |
---|
123 | { |
---|
124 | angleVector.push_back(angle[i]); |
---|
125 | angleDataVector.push_back(angleData[i]); |
---|
126 | } |
---|
127 | angleVector.push_back(angle[angleEntries]); |
---|
128 | _distributionAngle = new G4DistributionGenerator(angleVector,angleDataVector); |
---|
129 | } |
---|
130 | |
---|
131 | |
---|
132 | // Destructor |
---|
133 | |
---|
134 | G4PiMinusStopLi::~G4PiMinusStopLi() |
---|
135 | {} |
---|
136 | |
---|
137 | G4double G4PiMinusStopLi::FinalNucleons() |
---|
138 | { |
---|
139 | return nFinalNucleons; |
---|
140 | } |
---|
141 | |
---|