Geant4 Cross Reference |
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Please see the license in the file LICENSE and URL above * 16 // * for the full disclaimer and the limitatio 16 // * for the full disclaimer and the limitation of liability. * 17 // * 17 // * * 18 // * This code implementation is the result 18 // * This code implementation is the result of the scientific and * 19 // * technical work of the GEANT4 collaboratio 19 // * technical work of the GEANT4 collaboration. * 20 // * By using, copying, modifying or distri 20 // * By using, copying, modifying or distributing the software (or * 21 // * any work based on the software) you ag 21 // * any work based on the software) you agree to acknowledge its * 22 // * use in resulting scientific publicati 22 // * use in resulting scientific publications, and indicate your * 23 // * acceptance of all terms of the Geant4 Sof 23 // * acceptance of all terms of the Geant4 Software license. * 24 // ******************************************* 24 // ******************************************************************** 25 // 25 // 26 // 26 // 27 // ------------------------------------------- 27 // ------------------------------------------------------------------- 28 // 28 // 29 // GEANT4 Class file 29 // GEANT4 Class file 30 // 30 // 31 // 31 // 32 // File name: G4hZiegler1985Nuclear 32 // File name: G4hZiegler1985Nuclear 33 // 33 // 34 // Author: V.Ivanchenko (Vladimir.Ivanc 34 // Author: V.Ivanchenko (Vladimir.Ivanchenko@cern.ch) 35 // 35 // 36 // Creation date: 20 July 2000 36 // Creation date: 20 July 2000 37 // 37 // 38 // Modifications: 38 // Modifications: 39 // 20/07/2000 V.Ivanchenko First implementati 39 // 20/07/2000 V.Ivanchenko First implementation 40 // 40 // 41 // Class Description: 41 // Class Description: 42 // 42 // 43 // Nuclear stopping power parametrised accordi 43 // Nuclear stopping power parametrised according to 44 // J.F.Ziegler, J.P. Biersack, U. Littmark 44 // J.F.Ziegler, J.P. Biersack, U. Littmark 45 // The Stopping and Range of Ions in Matter, 45 // The Stopping and Range of Ions in Matter, 46 // Vol.1, Pergamon Press, 1985 46 // Vol.1, Pergamon Press, 1985 47 // 47 // 48 // Class Description: End 48 // Class Description: End 49 // 49 // 50 // ------------------------------------------- 50 // ------------------------------------------------------------------- 51 // 51 // 52 //....oooOO0OOooo........oooOO0OOooo........oo 52 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 53 53 54 #include "G4hZiegler1985Nuclear.hh" 54 #include "G4hZiegler1985Nuclear.hh" 55 55 56 #include "globals.hh" 56 #include "globals.hh" 57 #include "Randomize.hh" 57 #include "Randomize.hh" 58 #include "G4SystemOfUnits.hh" 58 #include "G4SystemOfUnits.hh" 59 #include "G4UnitsTable.hh" 59 #include "G4UnitsTable.hh" 60 60 61 //....oooOO0OOooo........oooOO0OOooo........oo 61 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 62 62 63 G4hZiegler1985Nuclear::G4hZiegler1985Nuclear() 63 G4hZiegler1985Nuclear::G4hZiegler1985Nuclear():G4VhNuclearStoppingPower() 64 {;} 64 {;} 65 65 66 //....oooOO0OOooo........oooOO0OOooo........oo 66 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 67 67 68 G4hZiegler1985Nuclear::~G4hZiegler1985Nuclear( 68 G4hZiegler1985Nuclear::~G4hZiegler1985Nuclear() 69 {;} 69 {;} 70 70 71 //....oooOO0OOooo........oooOO0OOooo........oo 71 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 72 72 73 G4double G4hZiegler1985Nuclear::NuclearStoppin 73 G4double G4hZiegler1985Nuclear::NuclearStoppingPower(G4double kineticEnergy, 74 G4double z1, G 74 G4double z1, G4double z2, 75 G4double m1, G 75 G4double m1, G4double m2Local) const 76 { 76 { 77 G4double energy = kineticEnergy/keV ; // en 77 G4double energy = kineticEnergy/keV ; // energy in keV 78 G4double ionloss ; 78 G4double ionloss ; 79 79 80 G4double rm = (m1 + m2Local) * ( std::pow(z1 80 G4double rm = (m1 + m2Local) * ( std::pow(z1, .23) + std::pow(z2, .23)) ; 81 81 82 G4double er = 32.536 * m2Local * energy / ( 82 G4double er = 32.536 * m2Local * energy / ( z1 * z2 * rm ) ; // reduced energy 83 83 84 if ( er <= 30 ) { 84 if ( er <= 30 ) { 85 ionloss = 0.5*std::log(1+1.1383*er)/ 85 ionloss = 0.5*std::log(1+1.1383*er)/ 86 (er+0.01312*std::pow(er,0.21226)+ 86 (er+0.01312*std::pow(er,0.21226)+0.19593*std::sqrt(er)) ; 87 87 88 } else { 88 } else { 89 ionloss = 0.5*std::log(er)/er ; 89 ionloss = 0.5*std::log(er)/er ; 90 } 90 } 91 91 92 // Stragling 92 // Stragling 93 if(lossFlucFlag) { 93 if(lossFlucFlag) { 94 G4double sig = 4.0 * m1 * m2Local / ((m1 + 94 G4double sig = 4.0 * m1 * m2Local / ((m1 + m2Local)*(m1 + m2Local)* 95 (4.0 + 0.197*std::pow(er,-1. 95 (4.0 + 0.197*std::pow(er,-1.6991)+6.584*std::pow(er,-1.0494))) ; 96 96 >> 97 97 ionloss *= G4RandGauss::shoot(1.0,sig) ; 98 ionloss *= G4RandGauss::shoot(1.0,sig) ; 98 } 99 } 99 100 100 ionloss *= 8.462 * z1 * z2 * m1 / rm ; // Re 101 ionloss *= 8.462 * z1 * z2 * m1 / rm ; // Return to [ev/(10^15 atoms/cm^2] 101 102 102 if ( ionloss < 0.0) ionloss = 0.0 ; 103 if ( ionloss < 0.0) ionloss = 0.0 ; 103 104 104 return ionloss; 105 return ionloss; 105 } 106 } 106 107 107 108 108 109 109 110 110 111 111 112