[968] | 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 | // |
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| 27 | // $Id: G4FTFParameters.cc,v 1.4 2008/12/18 13:02:00 gunter Exp $ |
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| 28 | // GEANT4 tag $Name: geant4-09-02-ref-02 $ |
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| 29 | // |
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| 30 | |
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| 31 | #include "G4FTFParameters.hh" |
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| 32 | |
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| 33 | G4FTFParameters::G4FTFParameters() |
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| 34 | {;} |
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| 35 | |
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| 36 | |
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| 37 | G4FTFParameters::~G4FTFParameters() |
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| 38 | {;} |
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| 39 | //********************************************************************************************** |
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| 40 | |
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| 41 | G4FTFParameters::G4FTFParameters(const G4ParticleDefinition * particle, |
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| 42 | G4double theA, |
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| 43 | G4double theZ, |
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| 44 | G4double s) |
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| 45 | { |
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| 46 | G4int PDGcode = particle->GetPDGEncoding(); |
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| 47 | G4int absPDGcode = std::abs(PDGcode); |
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| 48 | G4double Elab = (s - 2*0.88*GeV*GeV)/(2*0.939*GeV)/GeV; |
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| 49 | G4double Plab = std::sqrt(Elab * Elab - 0.88); |
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| 50 | |
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| 51 | G4double LogPlab = std::log( Plab ); |
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| 52 | G4double sqrLogPlab = LogPlab * LogPlab; |
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| 53 | |
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| 54 | //G4cout<<"G4FTFParameters Plab "<<Plab<<G4endl; |
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| 55 | |
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| 56 | G4int NumberOfTargetProtons = (G4int) theZ; |
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| 57 | G4int NumberOfTargetNeutrons = (G4int) theA- (G4int) theZ; |
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| 58 | G4int NumberOfTargetNucleons = NumberOfTargetProtons + NumberOfTargetNeutrons; |
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| 59 | |
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| 60 | G4double Xtotal, Xelastic; |
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| 61 | |
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| 62 | if( absPDGcode > 1000 ) //------Projectile is baryon -------- |
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| 63 | { |
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| 64 | G4double XtotPP = 48.0 + 0. *std::pow(Plab, 0. ) + 0.522*sqrLogPlab - 4.51*LogPlab; |
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| 65 | G4double XtotPN = 47.3 + 0. *std::pow(Plab, 0. ) + 0.513*sqrLogPlab - 4.27*LogPlab; |
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| 66 | |
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| 67 | G4double XelPP = 11.9 + 26.9*std::pow(Plab,-1.21) + 0.169*sqrLogPlab - 1.85*LogPlab; |
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| 68 | G4double XelPN = 11.9 + 26.9*std::pow(Plab,-1.21) + 0.169*sqrLogPlab - 1.85*LogPlab; |
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| 69 | |
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| 70 | Xtotal = ( NumberOfTargetProtons * XtotPP + |
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| 71 | NumberOfTargetNeutrons * XtotPN ) / NumberOfTargetNucleons; |
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| 72 | Xelastic = ( NumberOfTargetProtons * XelPP + |
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| 73 | NumberOfTargetNeutrons * XelPN ) / NumberOfTargetNucleons; |
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| 74 | } |
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| 75 | else if( PDGcode == 211 ) //------Projectile is PionPlus ------- |
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| 76 | { |
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| 77 | G4double XtotPiP = 16.4 + 19.3 *std::pow(Plab,-0.42) + 0.19 *sqrLogPlab - 0.0 *LogPlab; |
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| 78 | G4double XtotPiN = 33.0 + 14.0 *std::pow(Plab,-1.36) + 0.456*sqrLogPlab - 4.03*LogPlab; |
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| 79 | |
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| 80 | G4double XelPiP = 0.0 + 11.4*std::pow(Plab,-0.40) + 0.079*sqrLogPlab - 0.0 *LogPlab; |
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| 81 | G4double XelPiN = 1.76 + 11.2*std::pow(Plab,-0.64) + 0.043*sqrLogPlab - 0.0 *LogPlab; |
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| 82 | |
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| 83 | Xtotal = ( NumberOfTargetProtons * XtotPiP + |
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| 84 | NumberOfTargetNeutrons * XtotPiN ) / NumberOfTargetNucleons; |
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| 85 | Xelastic = ( NumberOfTargetProtons * XelPiP + |
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| 86 | NumberOfTargetNeutrons * XelPiN ) / NumberOfTargetNucleons; |
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| 87 | } |
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| 88 | else if( PDGcode == -211 ) //------Projectile is PionMinus ------- |
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| 89 | { |
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| 90 | G4double XtotPiP = 33.0 + 14.0 *std::pow(Plab,-1.36) + 0.456*sqrLogPlab - 4.03*LogPlab; |
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| 91 | G4double XtotPiN = 16.4 + 19.3 *std::pow(Plab,-0.42) + 0.19 *sqrLogPlab - 0.0 *LogPlab; |
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| 92 | |
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| 93 | G4double XelPiP = 1.76 + 11.2*std::pow(Plab,-0.64) + 0.043*sqrLogPlab - 0.0 *LogPlab; |
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| 94 | G4double XelPiN = 0.0 + 11.4*std::pow(Plab,-0.40) + 0.079*sqrLogPlab - 0.0 *LogPlab; |
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| 95 | |
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| 96 | Xtotal = ( NumberOfTargetProtons * XtotPiP + |
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| 97 | NumberOfTargetNeutrons * XtotPiN ) / NumberOfTargetNucleons; |
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| 98 | Xelastic = ( NumberOfTargetProtons * XelPiP + |
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| 99 | NumberOfTargetNeutrons * XelPiN ) / NumberOfTargetNucleons; |
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| 100 | } |
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| 101 | |
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| 102 | else if( PDGcode == 111 ) //------Projectile is PionZero ------- |
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| 103 | { |
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| 104 | G4double XtotPiP =(16.4 + 19.3 *std::pow(Plab,-0.42) + 0.19 *sqrLogPlab - 0.0 *LogPlab + //Pi+ |
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| 105 | 33.0 + 14.0 *std::pow(Plab,-1.36) + 0.456*sqrLogPlab - 4.03*LogPlab)/2; //Pi- |
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| 106 | |
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| 107 | G4double XtotPiN =(33.0 + 14.0 *std::pow(Plab,-1.36) + 0.456*sqrLogPlab - 4.03*LogPlab + //Pi+ |
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| 108 | 16.4 + 19.3 *std::pow(Plab,-0.42) + 0.19 *sqrLogPlab - 0.0 *LogPlab)/2; //Pi- |
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| 109 | |
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| 110 | G4double XelPiP =( 0.0 + 11.4*std::pow(Plab,-0.40) + 0.079*sqrLogPlab - 0.0 *LogPlab + //Pi+ |
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| 111 | 1.76 + 11.2*std::pow(Plab,-0.64) + 0.043*sqrLogPlab - 0.0 *LogPlab)/2; //Pi- |
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| 112 | G4double XelPiN =( 1.76 + 11.2*std::pow(Plab,-0.64) + 0.043*sqrLogPlab - 0.0 *LogPlab + //Pi+ |
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| 113 | 0.0 + 11.4*std::pow(Plab,-0.40) + 0.079*sqrLogPlab - 0.0 *LogPlab)/2; //Pi- |
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| 114 | |
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| 115 | Xtotal = ( NumberOfTargetProtons * XtotPiP + |
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| 116 | NumberOfTargetNeutrons * XtotPiN ) / NumberOfTargetNucleons; |
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| 117 | Xelastic = ( NumberOfTargetProtons * XelPiP + |
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| 118 | NumberOfTargetNeutrons * XelPiN ) / NumberOfTargetNucleons; |
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| 119 | } |
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| 120 | else if( PDGcode == 321 ) //------Projectile is KaonPlus ------- |
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| 121 | { |
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| 122 | G4double XtotKP = 18.1 + 0. *std::pow(Plab, 0. ) + 0.26 *sqrLogPlab - 1.0 *LogPlab; |
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| 123 | G4double XtotKN = 18.7 + 0. *std::pow(Plab, 0. ) + 0.21 *sqrLogPlab - 0.89*LogPlab; |
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| 124 | |
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| 125 | G4double XelKP = 5.0 + 8.1*std::pow(Plab,-1.8 ) + 0.16 *sqrLogPlab - 1.3 *LogPlab; |
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| 126 | G4double XelKN = 7.3 + 0. *std::pow(Plab,-0. ) + 0.29 *sqrLogPlab - 2.4 *LogPlab; |
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| 127 | |
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| 128 | Xtotal = ( NumberOfTargetProtons * XtotKP + |
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| 129 | NumberOfTargetNeutrons * XtotKN ) / NumberOfTargetNucleons; |
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| 130 | Xelastic = ( NumberOfTargetProtons * XelKP + |
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| 131 | NumberOfTargetNeutrons * XelKN ) / NumberOfTargetNucleons; |
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| 132 | } |
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| 133 | else if( PDGcode ==-321 ) //------Projectile is KaonMinus ------ |
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| 134 | { |
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| 135 | G4double XtotKP = 32.1 + 0. *std::pow(Plab, 0. ) + 0.66 *sqrLogPlab - 5.6 *LogPlab; |
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| 136 | G4double XtotKN = 25.2 + 0. *std::pow(Plab, 0. ) + 0.38 *sqrLogPlab - 2.9 *LogPlab; |
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| 137 | |
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| 138 | G4double XelKP = 7.3 + 0. *std::pow(Plab,-0. ) + 0.29 *sqrLogPlab - 2.4 *LogPlab; |
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| 139 | G4double XelKN = 5.0 + 8.1*std::pow(Plab,-1.8 ) + 0.16 *sqrLogPlab - 1.3 *LogPlab; |
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| 140 | |
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| 141 | Xtotal = ( NumberOfTargetProtons * XtotKP + |
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| 142 | NumberOfTargetNeutrons * XtotKN ) / NumberOfTargetNucleons; |
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| 143 | Xelastic = ( NumberOfTargetProtons * XelKP + |
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| 144 | NumberOfTargetNeutrons * XelKN ) / NumberOfTargetNucleons; |
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| 145 | } |
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| 146 | else if( PDGcode == 311 ) //------Projectile is KaonZero ------ |
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| 147 | { |
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| 148 | G4double XtotKP =( 18.1 + 0. *std::pow(Plab, 0. ) + 0.26 *sqrLogPlab - 1.0 *LogPlab + //K+ |
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| 149 | 32.1 + 0. *std::pow(Plab, 0. ) + 0.66 *sqrLogPlab - 5.6 *LogPlab)/2; //K- |
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| 150 | G4double XtotKN =( 18.7 + 0. *std::pow(Plab, 0. ) + 0.21 *sqrLogPlab - 0.89*LogPlab + //K+ |
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| 151 | 25.2 + 0. *std::pow(Plab, 0. ) + 0.38 *sqrLogPlab - 2.9 *LogPlab)/2; //K- |
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| 152 | |
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| 153 | G4double XelKP =( 5.0 + 8.1*std::pow(Plab,-1.8 ) + 0.16 *sqrLogPlab - 1.3 *LogPlab + //K+ |
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| 154 | 7.3 + 0. *std::pow(Plab,-0. ) + 0.29 *sqrLogPlab - 2.4 *LogPlab)/2; //K- |
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| 155 | G4double XelKN =( 7.3 + 0. *std::pow(Plab,-0. ) + 0.29 *sqrLogPlab - 2.4 *LogPlab + //K+ |
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| 156 | 5.0 + 8.1*std::pow(Plab,-1.8 ) + 0.16 *sqrLogPlab - 1.3 *LogPlab)/2; //K- |
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| 157 | Xtotal = ( NumberOfTargetProtons * XtotKP + |
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| 158 | NumberOfTargetNeutrons * XtotKN ) / NumberOfTargetNucleons; |
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| 159 | Xelastic = ( NumberOfTargetProtons * XelKP + |
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| 160 | NumberOfTargetNeutrons * XelKN ) / NumberOfTargetNucleons; |
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| 161 | } |
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| 162 | else //------Projectile is undefined, Nucleon assumed |
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| 163 | { |
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| 164 | G4double XtotPP = 48.0 + 0. *std::pow(Plab, 0. ) + 0.522*sqrLogPlab - 4.51*LogPlab; |
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| 165 | G4double XtotPN = 47.3 + 0. *std::pow(Plab, 0. ) + 0.513*sqrLogPlab - 4.27*LogPlab; |
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| 166 | |
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| 167 | G4double XelPP = 11.9 + 26.9*std::pow(Plab,-1.21) + 0.169*sqrLogPlab - 1.85*LogPlab; |
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| 168 | G4double XelPN = 11.9 + 26.9*std::pow(Plab,-1.21) + 0.169*sqrLogPlab - 1.85*LogPlab; |
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| 169 | |
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| 170 | Xtotal = ( NumberOfTargetProtons * XtotPP + |
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| 171 | NumberOfTargetNeutrons * XtotPN ) / NumberOfTargetNucleons; |
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| 172 | Xelastic = ( NumberOfTargetProtons * XelPP + |
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| 173 | NumberOfTargetNeutrons * XelPN ) / NumberOfTargetNucleons; |
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| 174 | }; |
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| 175 | |
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| 176 | // Xtotal and Xelastic in mb |
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| 177 | |
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| 178 | //----------- Geometrical parameters ------------------------------------------------ |
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| 179 | SetTotalCrossSection(Xtotal); |
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| 180 | SetElastisCrossSection(Xelastic); |
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| 181 | SetInelasticCrossSection(Xtotal-Xelastic); |
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| 182 | |
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| 183 | // // Interactions with elastic ans inelastic collisions |
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| 184 | SetProbabilityOfElasticScatt(Xtotal, Xelastic); |
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| 185 | SetRadiusOfHNinteractions2(Xtotal/pi/10.); |
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| 186 | // |
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| 187 | /* //==== No elastic scattering ============================ |
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| 188 | SetProbabilityOfElasticScatt(Xtotal, 0.); |
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| 189 | SetRadiusOfHNinteractions2((Xtotal-Xelastic)/pi/10.); |
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| 190 | */ //======================================================= |
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| 191 | |
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| 192 | //G4cout<<" Rnn "<<Xtotal/pi/10.<<" "<<Xtotal/pi/10.*fermi*fermi<<G4endl; |
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| 193 | //G4cout<<"G4FTFParameters Xt Xel MeV "<<Xtotal<<" "<<Xelastic<<" "<<GeV<<G4endl; |
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| 194 | |
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| 195 | //----------------------------------------------------------------------------------- |
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| 196 | SetSlope( Xtotal*Xtotal/16./pi/Xelastic/0.3894 ); // Slope parameter of elastic scattering |
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| 197 | // (GeV/c)^(-2)) |
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| 198 | //G4cout<<"G4FTFParameters Slope "<<GetSlope()<<G4endl; |
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| 199 | //----------------------------------------------------------------------------------- |
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| 200 | SetGamma0( GetSlope()*Xtotal/10./2./pi ); |
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| 201 | |
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| 202 | //----------- Parameters of elastic scattering -------------------------------------- |
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| 203 | // Gaussian parametrization of |
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| 204 | // elastic scattering amplitude assumed |
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| 205 | SetAvaragePt2ofElasticScattering(1./(Xtotal*Xtotal/16./pi/Xelastic/0.3894)*GeV*GeV); |
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| 206 | |
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| 207 | //----------- Parameters of excitations --------------------------------------------- |
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| 208 | if( absPDGcode > 1000 ) //------Projectile is baryon -------- |
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| 209 | { |
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| 210 | SetProjMinDiffMass(1.1); // GeV |
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| 211 | SetProjMinNonDiffMass(1.1); // GeV |
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| 212 | SetProbabilityOfProjDiff(0.95*std::pow(s/GeV/GeV,-0.35)); // 40/32 X-dif/X-inel |
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| 213 | |
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| 214 | SetTarMinDiffMass(1.1); // GeV |
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| 215 | SetTarMinNonDiffMass(1.1); // GeV |
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| 216 | SetProbabilityOfTarDiff(0.95*std::pow(s/GeV/GeV,-0.35)); // 40/32 X-dif/X-inel |
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| 217 | |
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| 218 | SetAveragePt2(0.3); // GeV^2 |
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| 219 | } |
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| 220 | else if( absPDGcode == 211 || PDGcode == 111) //------Projectile is Pion ----------- |
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| 221 | { |
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| 222 | SetProjMinDiffMass(0.5); // GeV |
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| 223 | SetProjMinNonDiffMass(0.3); // GeV |
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| 224 | SetProbabilityOfProjDiff(0.62*std::pow(s/GeV/GeV,-0.51)); // 40/32 X-dif/X-inel |
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| 225 | |
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| 226 | SetTarMinDiffMass(1.1); // GeV |
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| 227 | SetTarMinNonDiffMass(1.1); // GeV |
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| 228 | SetProbabilityOfTarDiff(0.62*std::pow(s/GeV/GeV,-0.51)); // 40/32 X-dif/X-inel |
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| 229 | |
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| 230 | /* |
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| 231 | SetProjMinDiffMass(0.5); |
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| 232 | SetProjMinNonDiffMass(0.3); // Uzhi 12.06.08 |
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| 233 | SetProbabilityOfProjDiff(0.05); |
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| 234 | SetProbabilityOfTarDiff(0.05); |
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| 235 | */ |
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| 236 | SetAveragePt2(0.3); // GeV^2 |
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| 237 | } |
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| 238 | else if( absPDGcode == 321 || PDGcode == -311) //------Projectile is Kaon ----------- |
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| 239 | { |
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| 240 | SetProjMinDiffMass(0.7); // GeV 1.1 |
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| 241 | SetProjMinNonDiffMass(0.7); // GeV |
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| 242 | SetProbabilityOfProjDiff(0.85*std::pow(s/GeV/GeV,-0.5)); // 40/32 X-dif/X-inel |
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| 243 | |
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| 244 | SetTarMinDiffMass(1.1); // GeV |
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| 245 | SetTarMinNonDiffMass(1.1); // GeV |
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| 246 | SetProbabilityOfTarDiff(0.85*std::pow(s/GeV/GeV,-0.5)); // 40/32 X-dif/X-inel |
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| 247 | |
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| 248 | SetAveragePt2(0.3); // GeV^2 |
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| 249 | } |
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| 250 | else //------Projectile is undefined, |
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| 251 | //------Nucleon assumed |
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| 252 | { |
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| 253 | SetProjMinDiffMass((particle->GetPDGMass()+160.*MeV)/GeV); |
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| 254 | SetProjMinNonDiffMass((particle->GetPDGMass()+160.*MeV)/GeV); |
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| 255 | SetProbabilityOfProjDiff(0.95*std::pow(s/GeV/GeV,-0.35)); // 40/32 X-dif/X-inel |
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| 256 | |
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| 257 | SetTarMinDiffMass(1.1); // GeV |
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| 258 | SetTarMinNonDiffMass(1.1); // GeV |
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| 259 | SetProbabilityOfTarDiff(0.95*std::pow(s/GeV/GeV,-0.35)); // 40/32 X-dif/X-inel |
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| 260 | |
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| 261 | SetAveragePt2(0.3); // GeV^2 |
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| 262 | }; |
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| 263 | |
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| 264 | |
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| 265 | //G4cout<<"G4FTFParameters Out"<<G4endl; |
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| 266 | |
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| 267 | } |
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| 268 | //********************************************************************************************** |
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