Geant4 Cross Reference |
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Please see the license in the file << 14 // * use. * 16 // * for the full disclaimer and the limitatio << 17 // * 15 // * * 18 // * This code implementation is the result << 16 // * This code implementation is the intellectual property of the * 19 // * technical work of the GEANT4 collaboratio << 17 // * GEANT4 collaboration. * 20 // * By using, copying, modifying or distri << 18 // * By copying, distributing or modifying the Program (or any work * 21 // * any work based on the software) you ag << 19 // * based on the Program) you indicate your acceptance of this * 22 // * use in resulting scientific publicati << 20 // * statement, and all its terms. * 23 // * acceptance of all terms of the Geant4 Sof << 24 // ******************************************* 21 // ******************************************************************** 25 // 22 // 26 // 23 // 27 // ------------------------------------------- 24 // ------------------------------------------------------------------- 28 // 25 // 29 // GEANT4 Class file 26 // GEANT4 Class file 30 // 27 // 31 // 28 // 32 // File name: G4hZiegler1985Nuclear 29 // File name: G4hZiegler1985Nuclear 33 // 30 // 34 // Author: V.Ivanchenko (Vladimir.Ivanc 31 // Author: V.Ivanchenko (Vladimir.Ivanchenko@cern.ch) 35 // 32 // 36 // Creation date: 20 July 2000 33 // Creation date: 20 July 2000 37 // 34 // 38 // Modifications: 35 // Modifications: 39 // 20/07/2000 V.Ivanchenko First implementati 36 // 20/07/2000 V.Ivanchenko First implementation 40 // 37 // 41 // Class Description: 38 // Class Description: 42 // 39 // 43 // Nuclear stopping power parametrised accordi 40 // Nuclear stopping power parametrised according to 44 // J.F.Ziegler, J.P. Biersack, U. Littmark 41 // J.F.Ziegler, J.P. Biersack, U. Littmark 45 // The Stopping and Range of Ions in Matter, 42 // The Stopping and Range of Ions in Matter, 46 // Vol.1, Pergamon Press, 1985 43 // Vol.1, Pergamon Press, 1985 47 // 44 // 48 // Class Description: End 45 // Class Description: End 49 // 46 // 50 // ------------------------------------------- 47 // ------------------------------------------------------------------- 51 // 48 // 52 //....oooOO0OOooo........oooOO0OOooo........oo 49 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 53 50 54 #include "G4hZiegler1985Nuclear.hh" 51 #include "G4hZiegler1985Nuclear.hh" 55 << 52 #include "G4UnitsTable.hh" 56 #include "globals.hh" 53 #include "globals.hh" 57 #include "Randomize.hh" 54 #include "Randomize.hh" 58 #include "G4SystemOfUnits.hh" << 59 #include "G4UnitsTable.hh" << 60 55 61 //....oooOO0OOooo........oooOO0OOooo........oo 56 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 62 57 63 G4hZiegler1985Nuclear::G4hZiegler1985Nuclear() 58 G4hZiegler1985Nuclear::G4hZiegler1985Nuclear():G4VhNuclearStoppingPower() 64 {;} 59 {;} 65 60 66 //....oooOO0OOooo........oooOO0OOooo........oo 61 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 67 62 68 G4hZiegler1985Nuclear::~G4hZiegler1985Nuclear( 63 G4hZiegler1985Nuclear::~G4hZiegler1985Nuclear() 69 {;} 64 {;} 70 65 71 //....oooOO0OOooo........oooOO0OOooo........oo 66 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 72 67 73 G4double G4hZiegler1985Nuclear::NuclearStoppin 68 G4double G4hZiegler1985Nuclear::NuclearStoppingPower(G4double kineticEnergy, 74 G4double z1, G 69 G4double z1, G4double z2, 75 G4double m1, G << 70 G4double m1, G4double m2) const 76 { 71 { 77 G4double energy = kineticEnergy/keV ; // en 72 G4double energy = kineticEnergy/keV ; // energy in keV 78 G4double ionloss ; 73 G4double ionloss ; 79 74 80 G4double rm = (m1 + m2Local) * ( std::pow(z1 << 75 G4double rm = (m1 + m2) * ( std::pow(z1, .23) + std::pow(z2, .23)) ; 81 76 82 G4double er = 32.536 * m2Local * energy / ( << 77 G4double er = 32.536 * m2 * energy / ( z1 * z2 * rm ) ; // reduced energy 83 78 84 if ( er <= 30 ) { 79 if ( er <= 30 ) { 85 ionloss = 0.5*std::log(1+1.1383*er)/ 80 ionloss = 0.5*std::log(1+1.1383*er)/ 86 (er+0.01312*std::pow(er,0.21226)+ 81 (er+0.01312*std::pow(er,0.21226)+0.19593*std::sqrt(er)) ; 87 82 88 } else { 83 } else { 89 ionloss = 0.5*std::log(er)/er ; 84 ionloss = 0.5*std::log(er)/er ; 90 } 85 } 91 86 92 // Stragling 87 // Stragling 93 if(lossFlucFlag) { 88 if(lossFlucFlag) { 94 G4double sig = 4.0 * m1 * m2Local / ((m1 + << 89 G4double sig = 4.0 * m1 * m2 / ((m1 + m2)*(m1 + m2)* 95 (4.0 + 0.197*std::pow(er,-1. 90 (4.0 + 0.197*std::pow(er,-1.6991)+6.584*std::pow(er,-1.0494))) ; >> 91 96 92 97 ionloss *= G4RandGauss::shoot(1.0,sig) ; 93 ionloss *= G4RandGauss::shoot(1.0,sig) ; 98 } 94 } 99 95 100 ionloss *= 8.462 * z1 * z2 * m1 / rm ; // Re 96 ionloss *= 8.462 * z1 * z2 * m1 / rm ; // Return to [ev/(10^15 atoms/cm^2] 101 97 102 if ( ionloss < 0.0) ionloss = 0.0 ; 98 if ( ionloss < 0.0) ionloss = 0.0 ; 103 99 104 return ionloss; 100 return ionloss; 105 } 101 } 106 102 107 103 108 104 109 105 110 106 111 107