| Geant4 Cross Reference |
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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) * sqrt( pow(z1, .23) + 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*log(1+1.1383*er)/
86 (er+0.01312*std::pow(er,0.21226)+ << 81 (er+0.01312*pow(er,0.21226)+0.19593*sqrt(er)) ;
87 << 82
88 } else { 83 } else {
89 ionloss = 0.5*std::log(er)/er ; << 84 ionloss = 0.5*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*pow(er,-1.6991)+6.584*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