Import Geant4 8.1.0 source tree

source/processes/electromagnetic/utils/src/G4VEmModel.cc

@@ -1,27 +1,30 @@
 //
 // ********************************************************************
-// * DISCLAIMER                                                       *
+// * License and 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                                  *
+// * The  Geant4 software  is  copyright of the Copyright Holders  of *
+// * the Geant4 Collaboration.  It is provided  under  the terms  and *
+// * conditions of the Geant4 Software License,  included in the file *
+// * LICENSE and available at  http://cern.ch/geant4/license .  These *
+// * include a list of copyright holders.                             *
 // *                                                                  *
 // * 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.                                                             *
+// * use.  Please see the license in the file  LICENSE  and URL above *
+// * for the full disclaimer and the limitation of liability.         *
 // *                                                                  *
-// * 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.                                    *
+// * This  code  implementation is the result of  the  scientific and *
+// * technical work of the GEANT4 collaboration.                      *
+// * By using,  copying,  modifying or  distributing the software (or *
+// * any work based  on the software)  you  agree  to acknowledge its *
+// * use  in  resulting  scientific  publications,  and indicate your *
+// * acceptance of all terms of the Geant4 Software license.          *
 // ********************************************************************
 //
-// $Id: G4VEmModel.cc,v 1.3 2005/10/25 18:28:58 vnivanch Exp $
-// GEANT4 tag $Name: geant4-08-00 $
+// $Id: G4VEmModel.cc,v 1.6 2006/06/29 19:55:17 gunter Exp $
+// GEANT4 tag $Name: geant4-08-01 $
 //
 // -------------------------------------------------------------------
 //
@@ -36,6 +39,7 @@
 //
 // Modifications:
 // 25.10.2005 Set default highLimit=100.TeV (V.Ivanchenko)
+// 06.02.2006 add method ComputeMeanFreePath() (mma)
 //
 //
 // Class Description:
@@ -47,22 +51,25 @@
 
 #include "G4VEmModel.hh"
 
-//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
-//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
+//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
+//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 
 G4VEmModel::G4VEmModel(const G4String& nam):
-  lowLimit(0.1*keV), highLimit(100.0*TeV), fluc(0), name(nam), pParticleChange(0)
+ lowLimit(0.1*keV), highLimit(100.0*TeV), fluc(0), name(nam), pParticleChange(0)
 {}
 
+//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
+
 G4VEmModel::~G4VEmModel()
 {}
 
-G4double G4VEmModel::CrossSectionPerVolume(
-                                        const G4Material* material,
-					const G4ParticleDefinition* p,
-					      G4double ekin,
-					      G4double emin,
-                                              G4double emax)
+//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
+
+G4double G4VEmModel::CrossSectionPerVolume(const G4Material* material,
+					   const G4ParticleDefinition* p,
+					         G4double ekin,
+					         G4double emin,
+                                                 G4double emax)
 {
   G4double cross = 0.0;
   const G4ElementVector* theElementVector = material->GetElementVector();
@@ -71,12 +78,26 @@ G4double G4VEmModel::CrossSectionPerVolume(
   for (size_t i=0; i<nelm; i++) {
     const G4Element* elm = (*theElementVector)[i];
     cross += theAtomNumDensityVector[i]*
-             ComputeCrossSectionPerAtom(p,ekin,elm->GetZ(),elm->GetN(),emin,emax);
+      ComputeCrossSectionPerAtom(p,ekin,elm->GetZ(),elm->GetN(),emin,emax);
     xsec[i] = cross;
   }
   return cross;
 }
 
-//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
+//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
+
+G4double G4VEmModel::ComputeMeanFreePath(const G4ParticleDefinition* p,
+					       G4double ekin,
+					 const G4Material* material,     
+					       G4double emin,
+                                               G4double emax)
+{
+  G4double mfp = DBL_MAX;
+  G4double cross = CrossSectionPerVolume(material,p,ekin,emin,emax);
+  if (cross >0.) mfp = 1./cross;
+  return mfp;
+}
+
+//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......