00001
00002
00003
00004
00005
00006
00007
00008
00009
00010
00011
00012
00013
00014
00015
00016
00017
00018
00019
00020
00021
00022
00023
00024
00025
00026
00027
00028
00029
00030
00031
00032
00033
00034
00035
00036
00037
00038
00039
00040
00041
00042
00043
00044
00045
00046
00047
00048
00049
00050
00051
00052
00053
00054
00055
00056
00057
00058
00059 #include "G4IonChuFluctuationModel.hh"
00060
00061 #include "globals.hh"
00062 #include "G4PhysicalConstants.hh"
00063 #include "G4SystemOfUnits.hh"
00064 #include "G4DynamicParticle.hh"
00065 #include "G4ParticleDefinition.hh"
00066 #include "G4Material.hh"
00067
00068
00069
00070 G4IonChuFluctuationModel::G4IonChuFluctuationModel(const G4String& name)
00071 : G4VLowEnergyModel(name)
00072 {;}
00073
00074
00075
00076 G4IonChuFluctuationModel::~G4IonChuFluctuationModel()
00077 {;}
00078
00079
00080
00081 G4double G4IonChuFluctuationModel::TheValue(const G4DynamicParticle* particle,
00082 const G4Material* material)
00083 {
00084 G4double energy = particle->GetKineticEnergy() ;
00085 G4double particleMass = particle->GetMass() ;
00086
00087 G4double q = ChuFluctuationModel(material,energy,particleMass) ;
00088
00089 return q ;
00090 }
00091
00092
00093
00094 G4double G4IonChuFluctuationModel::TheValue(
00095 const G4ParticleDefinition* aParticle,
00096 const G4Material* material,
00097 G4double kineticEnergy)
00098 {
00099 G4double particleMass = aParticle->GetPDGMass() ;
00100
00101 G4double q = ChuFluctuationModel(material,kineticEnergy,particleMass);
00102
00103 return q ;
00104 }
00105
00106
00107
00108 G4double G4IonChuFluctuationModel::HighEnergyLimit(const G4ParticleDefinition*,
00109 const G4Material* ) const
00110 {
00111 return 1.0*TeV ;
00112 }
00113
00114
00115
00116 G4double G4IonChuFluctuationModel::LowEnergyLimit(const G4ParticleDefinition*,
00117 const G4Material*) const
00118 {
00119 return 0.0 ;
00120 }
00121
00122
00123
00124 G4double G4IonChuFluctuationModel::HighEnergyLimit(const G4ParticleDefinition*) const
00125 {
00126 return 1.0*TeV ;
00127 }
00128
00129
00130
00131 G4double G4IonChuFluctuationModel::LowEnergyLimit(const G4ParticleDefinition*) const
00132 {
00133 return 0.0 ;
00134 }
00135
00136
00137
00138 G4bool G4IonChuFluctuationModel::IsInCharge(const G4DynamicParticle*,
00139 const G4Material*) const
00140 {
00141 return true ;
00142 }
00143
00144
00145
00146 G4bool G4IonChuFluctuationModel::IsInCharge(const G4ParticleDefinition*,
00147 const G4Material*) const
00148 {
00149 return true ;
00150 }
00151
00152
00153
00154 G4double G4IonChuFluctuationModel::ChuFluctuationModel(const G4Material* material,
00155 G4double kineticEnergy,
00156 G4double particleMass) const
00157 {
00158
00159
00160
00161
00162 G4double energy = kineticEnergy * amu_c2/(particleMass*MeV) ;
00163
00164 G4double zeff = (material->GetElectronDensity())/
00165 (material->GetTotNbOfAtomsPerVolume()) ;
00166
00167 static G4double a[96][4] = {
00168 {-0.3291, -0.8312, 0.2460, -1.0220},
00169 {-0.5615, -0.5898, 0.5205, -0.7258},
00170 {-0.5280, -0.4981, 0.5519, -0.5865},
00171 {-0.5125, -0.4625, 0.5660, -0.5190},
00172 {-0.5127, -0.8595, 0.5626, -0.8721},
00173 {-0.5174, -1.1930, 0.5565, -1.1980},
00174 {-0.5179, -1.1850, 0.5560, -1.2070},
00175 {-0.5209, -0.9355, 0.5590, -1.0250},
00176 {-0.5255, -0.7766, 0.5720, -0.9412},
00177
00178 {-0.5776, -0.6665, 0.6598, -0.8484},
00179 {-0.6013, -0.6045, 0.7321, -0.7671},
00180 {-0.5781, -0.5518, 0.7605, -0.6919},
00181 {-0.5587, -0.4981, 0.7835, -0.6195},
00182 {-0.5466, -0.4656, 0.7978, -0.5771},
00183 {-0.5406, -0.4690, 0.8031, -0.5718},
00184 {-0.5391, -0.5061, 0.8024, -0.5974},
00185 {-0.5380, -0.6483, 0.7962, -0.6970},
00186 {-0.5355, -0.7722, 0.7962, -0.7839},
00187 {-0.5329, -0.7720, 0.7988, -0.7846},
00188
00189 {-0.5335, -0.7671, 0.7984, -0.7933},
00190 {-0.5324, -0.7612, 0.7998, -0.8031},
00191 {-0.5305, -0.7300, 0.8031, -0.7990},
00192 {-0.5307, -0.7178, 0.8049, -0.8216},
00193 {-0.5248, -0.6621, 0.8165, -0.7919},
00194 {-0.5180, -0.6502, 0.8266, -0.7986},
00195 {-0.5084, -0.6408, 0.8396, -0.8048},
00196 {-0.4967, -0.6331, 0.8549, -0.8093},
00197 {-0.4861, -0.6508, 0.8712, -0.8432},
00198 {-0.4700, -0.6186, 0.8961, -0.8132},
00199
00200 {-0.4545, -0.5720, 0.9227, -0.7710},
00201 {-0.4404, -0.5226, 0.9481, -0.7254},
00202 {-0.4288, -0.4778, 0.9701, -0.6850},
00203 {-0.4199, -0.4425, 0.9874, -0.6539},
00204 {-0.4131, -0.4188, 0.9998, -0.6332},
00205 {-0.4089, -0.4057, 1.0070, -0.6218},
00206 {-0.4039, -0.3913, 1.0150, -0.6107},
00207 {-0.3987, -0.3698, 1.0240, -0.5938},
00208 {-0.3977, -0.3608, 1.0260, -0.5852},
00209 {-0.3972, -0.3600, 1.0260, -0.5842},
00210
00211 {-0.3985, -0.3803, 1.0200, -0.6013},
00212 {-0.3985, -0.3979, 1.0150, -0.6168},
00213 {-0.3968, -0.3990, 1.0160, -0.6195},
00214 {-0.3971, -0.4432, 1.0050, -0.6591},
00215 {-0.3944, -0.4665, 1.0010, -0.6825},
00216 {-0.3924, -0.5109, 0.9921, -0.7235},
00217 {-0.3882, -0.5158, 0.9947, -0.7343},
00218 {-0.3838, -0.5125, 0.9999, -0.7370},
00219 {-0.3786, -0.4976, 1.0090, -0.7310},
00220 {-0.3741, -0.4738, 1.0200, -0.7155},
00221
00222 {-0.3969, -0.4496, 1.0320, -0.6982},
00223 {-0.3663, -0.4297, 1.0430, -0.6828},
00224 {-0.3630, -0.4120, 1.0530, -0.6689},
00225 {-0.3597, -0.3964, 1.0620, -0.6564},
00226 {-0.3555, -0.3809, 1.0720, -0.6454},
00227 {-0.3525, -0.3607, 1.0820, -0.6289},
00228 {-0.3505, -0.3465, 1.0900, -0.6171},
00229 {-0.3397, -0.3570, 1.1020, -0.6384},
00230 {-0.3314, -0.3552, 1.1130, -0.6441},
00231 {-0.3235, -0.3531, 1.1230, -0.6498},
00232
00233 {-0.3150, -0.3483, 1.1360, -0.6539},
00234 {-0.3060, -0.3441, 1.1490, -0.6593},
00235 {-0.2968, -0.3396, 1.1630, -0.6649},
00236 {-0.2935, -0.3225, 1.1760, -0.6527},
00237 {-0.2797, -0.3262, 1.1940, -0.6722},
00238 {-0.2704, -0.3202, 1.2100, -0.6770},
00239 {-0.2815, -0.3227, 1.2480, -0.6775},
00240 {-0.2880, -0.3245, 1.2810, -0.6801},
00241 {-0.3034, -0.3263, 1.3270, -0.6778},
00242 {-0.2936, -0.3215, 1.3430, -0.6835},
00243
00244 {-0.3282, -0.3200, 1.3980, -0.6650},
00245 {-0.3260, -0.3070, 1.4090, -0.6552},
00246 {-0.3511, -0.3074, 1.4470, -0.6442},
00247 {-0.3501, -0.3064, 1.4500, -0.6442},
00248 {-0.3490, -0.3027, 1.4550, -0.6418},
00249 {-0.3487, -0.3048, 1.4570, -0.6447},
00250 {-0.3478, -0.3074, 1.4600, -0.6483},
00251 {-0.3501, -0.3283, 1.4540, -0.6669},
00252 {-0.3494, -0.3373, 1.4550, -0.6765},
00253 {-0.3485, -0.3373, 1.4570, -0.6774},
00254
00255 {-0.3462, -0.3300, 1.4630, -0.6728},
00256 {-0.3462, -0.3225, 1.4690, -0.6662},
00257 {-0.3453, -0.3094, 1.4790, -0.6553},
00258 {-0.3844, -0.3134, 1.5240, -0.6412},
00259 {-0.3848, -0.3018, 1.5310, -0.6303},
00260 {-0.3862, -0.2955, 1.5360, -0.6237},
00261 {-0.4262, -0.2991, 1.5860, -0.6115},
00262 {-0.4278, -0.2910, 1.5900, -0.6029},
00263 {-0.4303, -0.2817, 1.5940, -0.5927},
00264 {-0.4315, -0.2719, 1.6010, -0.5829},
00265
00266 {-0.4359, -0.2914, 1.6050, -0.6010},
00267 {-0.4365, -0.2982, 1.6080, -0.6080},
00268 {-0.4253, -0.3037, 1.6120, -0.6150},
00269 {-0.4335, -0.3245, 1.6160, -0.6377},
00270 {-0.4307, -0.3292, 1.6210, -0.6447},
00271 {-0.4284, -0.3204, 1.6290, -0.6380},
00272 {-0.4227, -0.3217, 1.6360, -0.6438}
00273 } ;
00274
00275 G4int iz = (G4int)zeff - 2 ;
00276 if( 0 > iz ) iz = 0 ;
00277 if(95 < iz ) iz = 95 ;
00278
00279 G4double q = 1.0 / (1.0 + a[iz][0]*std::pow(energy,a[iz][1])+
00280 + a[iz][2]*std::pow(energy,a[iz][3])) ;
00281
00282 return q ;
00283 }
00284
00285