| 1 | //
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| 2 | // ********************************************************************
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| 3 | // * License and Disclaimer *
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| 4 | // * *
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of *
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and *
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| 7 | // * conditions of the Geant4 Software License, included in the file *
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These *
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| 9 | // * include a list of copyright holders. *
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| 10 | // * *
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| 11 | // * Neither the authors of this software system, nor their employing *
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| 12 | // * institutes,nor the agencies providing financial support for this *
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| 13 | // * work make any representation or warranty, express or implied, *
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| 14 | // * regarding this software system or assume any liability for its *
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| 15 | // * use. Please see the license in the file LICENSE and URL above *
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| 16 | // * for the full disclaimer and the limitation of liability. *
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| 17 | // * *
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| 18 | // * This code implementation is the result of the scientific and *
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| 19 | // * technical work of the GEANT4 collaboration. *
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| 20 | // * By using, copying, modifying or distributing the software (or *
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| 21 | // * any work based on the software) you agree to acknowledge its *
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| 22 | // * use in resulting scientific publications, and indicate your *
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| 23 | // * acceptance of all terms of the Geant4 Software license. *
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| 24 | // ********************************************************************
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| 25 | //
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| 26 | // File name: G4PiMinusStopAl
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| 27 | //
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| 28 | // Author: Maria Grazia Pia (pia@genova.infn.it)
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| 29 | //
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| 30 | // Creation date: 8 May 1998
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| 31 | //
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| 32 | // -------------------------------------------------------------------
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| 33 |
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| 34 | #include "G4ios.hh"
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| 35 |
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| 36 | #include "G4PiMinusStopAl.hh"
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| 37 |
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| 38 | #include "globals.hh"
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| 39 | #include "Randomize.hh"
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| 40 | #include "G4Proton.hh"
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| 41 | #include "G4Neutron.hh"
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| 42 | #include "G4ParticleTypes.hh"
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| 43 | #include "G4ReactionKinematics.hh"
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| 44 | #include "G4DynamicParticleVector.hh"
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| 45 | #include "G4LorentzVector.hh"
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| 46 | #include "G4NucleiPropertiesTable.hh"
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| 47 | #include "G4PiMinusStopMaterial.hh"
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| 48 | #include "G4DistributionGenerator.hh"
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| 49 |
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| 50 | // np/pp production ratio
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| 51 | // Experimental values:
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| 52 | // R(np/pp) = average (E. Gadioli et al., Phys Rev C36 (1987) 741)
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| 53 | G4double G4PiMinusStopAl::npRatio = 4;
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| 54 |
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| 55 | // Average numbers of final nucleons detected, for N-pair absorption
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| 56 | // (R. Madey et al., Phys Rev C25 (1982) 3050
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| 57 | G4double G4PiMinusStopAl::nFinalNucleons = 1.67;
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| 58 |
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| 59 | // Kinetic energy (MeV) distributions measured for coincident nucleon
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| 60 | // emission
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| 61 | // (R. Madey et al., Phys Rev C25 (1982) 3050
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| 62 |
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| 63 | G4int G4PiMinusStopAl::eKinEntries = 10;
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| 64 |
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| 65 | G4double G4PiMinusStopAl::eKinData[10] = { 0.23, 0.58, 1.24, 1.52,
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| 66 | 1.67,
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| 67 | 1.52, 1.24, 0.95, 0.58, 0.23};
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| 68 |
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| 69 | G4double G4PiMinusStopAl::eKin[11] = { 5.2, 15., 27., 41.5,
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| 70 | 49.6,
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| 71 | 57.7, 79.3, 94.4, 114., 125., 140.};
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| 72 |
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| 73 |
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| 74 | // Opening angle distributions measured for coincident nucleon emission
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| 75 | // (P.Heusi et al., Nucl. Phys. A407 (1983) 429
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| 76 |
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| 77 | G4int G4PiMinusStopAl::angleEntries = 7;
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| 78 |
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| 79 | G4double G4PiMinusStopAl::angleData[7] =
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| 80 | { 1.43, 1.67, 2.62, 4.29, 7.62, 11.90, 14.76 };
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| 81 |
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| 82 | G4double G4PiMinusStopAl::angle[8] = { 1.308997, 1.570796, 1.832596, 2.094395,
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| 83 | 2.356194, 2.617994, 2.967060, 3.1415927 };
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| 84 |
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| 85 |
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| 86 |
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| 87 | // Constructor
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| 88 |
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| 89 | G4PiMinusStopAl::G4PiMinusStopAl()
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| 90 |
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| 91 | {
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| 92 | // Cluster size: nucleon pair, alpha, triton etc.
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| 93 | // First implementation: interaction with nucleon pair only
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| 94 | _clusterSize = 2;
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| 95 |
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| 96 | // R ratio
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| 97 | theR = 1. / (1. + npRatio);
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| 98 |
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| 99 | _definitions = new std::vector<G4ParticleDefinition*>();
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| 100 | _momenta = new std::vector<G4LorentzVector*>();
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| 101 |
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| 102 | std::vector<double> eKinVector;
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| 103 | std::vector<double> eKinDataVector;
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| 104 | int i;
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| 105 | for (i=0; i<eKinEntries; i++)
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| 106 | {
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| 107 | eKinVector.push_back(eKin[i]);
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| 108 | eKinDataVector.push_back(eKinData[i]);
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| 109 | }
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| 110 | eKinVector.push_back(eKin[eKinEntries]);
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| 111 | _distributionE = new G4DistributionGenerator(eKinVector,eKinDataVector);
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| 112 |
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| 113 | std::vector<double> angleVector;
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| 114 | std::vector<double> angleDataVector;
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| 115 | for (i=0; i<angleEntries; i++)
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| 116 | {
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| 117 | angleVector.push_back(angle[i]);
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| 118 | angleDataVector.push_back(angleData[i]);
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| 119 | }
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| 120 | angleVector.push_back(angle[angleEntries]);
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| 121 | _distributionAngle = new G4DistributionGenerator(angleVector,angleDataVector);
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| 122 | }
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| 123 |
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| 124 |
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| 125 | // Destructor
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| 126 |
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| 127 | G4PiMinusStopAl::~G4PiMinusStopAl()
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| 128 | {}
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| 129 |
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| 130 | G4double G4PiMinusStopAl::FinalNucleons()
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| 131 | {
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| 132 | return nFinalNucleons;
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| 133 | }
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| 134 |
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