Import Geant4 5.0.0 source tree

2016-06-08 16:57:27 +02:00
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+//
+// ********************************************************************
+// * DISCLAIMER                                                       *
+// *                                                                  *
+// * The following disclaimer summarizes all the specific disclaimers *
+// * of contributors to this software. The specific disclaimers,which *
+// * govern, are listed with their locations in:                      *
+// *   http://cern.ch/geant4/license                                  *
+// *                                                                  *
+// * Neither the authors of this software system, nor their employing *
+// * institutes,nor the agencies providing financial support for this *
+// * work  make  any representation or  warranty, express or implied, *
+// * regarding  this  software system or assume any liability for its *
+// * use.                                                             *
+// *                                                                  *
+// * This  code  implementation is the  intellectual property  of the *
+// * GEANT4 collaboration.                                            *
+// * By copying,  distributing  or modifying the Program (or any work *
+// * based  on  the Program)  you indicate  your  acceptance of  this *
+// * statement, and all its terms.                                    *
+// ********************************************************************
+//
+//
+// -------------------------------------------------------------------
+//
+// GEANT4 Class header file
+//
+//
+// File name:     G4BetheBlochModel
+//
+// Author:        Vladimir Ivanchenko on base of Laszlo Urban code
+// 
+// Creation date: 03.01.2002
+//
+// Modifications: 
+
+//
+// Class Description: 
+//
+// Implementation of Bethe-Bloch model of energy loss and
+// delta-electron production by heavy charged particles
+
+// -------------------------------------------------------------------
+//
+
+#ifndef G4BetheBlochModel_h
+#define G4BetheBlochModel_h 1
+
+#include "G4VEmModel.hh"
+
+class G4BetheBlochModel : public G4VEmModel
+{
+
+public:
+
+  G4BetheBlochModel(const G4ParticleDefinition* p = 0);
+
+  ~G4BetheBlochModel();
+
+  G4double HighEnergyLimit(const G4ParticleDefinition* p,
+                           const G4Material*);
+ 
+  G4double LowEnergyLimit(const G4ParticleDefinition* p,
+                          const G4Material*);
+
+  void SetHighEnergyLimit(const G4Material*, G4double e) {highKinEnergy = e;};
+ 
+  void SetLowEnergyLimit(const G4Material*, G4double e) {lowKinEnergy = e;};
+
+  G4double MinEnergyCut(const G4ParticleDefinition*,
+                        const G4Material*);
+ 
+  G4bool IsInCharge(const G4ParticleDefinition*,
+	            const G4Material*);
+
+  G4double ComputeDEDX(const G4Material*,
+                       const G4ParticleDefinition*,
+                             G4double kineticEnergy,
+                             G4double cutEnergy);
+
+  G4double CrossSection(const G4Material*,
+                        const G4ParticleDefinition*,
+                              G4double kineticEnergy,
+                              G4double cutEnergy,
+                              G4double maxEnergy);
+
+  G4std::vector<G4DynamicParticle*>* SampleSecondary(
+                                const G4Material*,
+                                const G4DynamicParticle*,
+                                      G4double tmin,
+                                      G4double maxEnergy);
+
+  G4double MaxSecondaryEnergy(const G4DynamicParticle*);
+
+protected:
+
+  G4double MaxSecondaryEnergy(const G4ParticleDefinition*,
+                                    G4double kinEnergy);
+
+private:
+
+  void SetParticle(const G4ParticleDefinition* p);
+
+  // hide assignment operator 
+  G4BetheBlochModel & operator=(const  G4BetheBlochModel &right);
+  G4BetheBlochModel(const  G4BetheBlochModel&);
+
+  const G4ParticleDefinition* particle;
+  G4double mass;
+  G4double spin;
+  G4double chargeSquare;
+  G4double ratio;
+  G4double highKinEnergy;
+  G4double lowKinEnergy;
+  G4double twoln10;
+  G4double bg2lim; 
+  G4double taulim;
+  G4double qc;
+};
+
+//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
+
+inline G4double G4BetheBlochModel::MaxSecondaryEnergy(
+          const G4ParticleDefinition* p,
+                G4double kinEnergy) 
+{
+
+  G4double gamma= kinEnergy/mass + 1.0;
+  G4double tmax = 2.0*electron_mass_c2*(gamma*gamma - 1.) /
+                  (1. + 2.0*gamma*ratio + ratio*ratio);
+  
+  return tmax;
+}
+
+//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
+
+inline G4double G4BetheBlochModel::MaxSecondaryEnergy(const G4DynamicParticle* dp)
+{
+
+  G4double kineticEnergy = dp->GetKineticEnergy();
+  G4double gamma= kineticEnergy/mass + 1.0;
+  G4double tmax = 2.0*electron_mass_c2*(gamma*gamma - 1.) /
+                  (1. + 2.0*gamma*ratio + ratio*ratio);
+  
+  return tmax;
+}
+
+//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
+
+#endif