Import Geant4 6.0.0 source tree

2016-06-09 10:41:53 +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.                                    *
+// ********************************************************************
+//
+#ifndef G4BetaFermiFunction_h
+#define G4BetaFermiFunction_h 1
+
+#include "globals.hh"
+
+class G4BetaFermiFunction
+{
+  // class  description
+  // It is to calculate the Coulomb correction to beta particles
+  // 
+
+public: // with description
+  
+  G4BetaFermiFunction(G4int const fA, G4int const fZ) :
+    A(fA), Z(fZ)
+  {};
+  // constructor: fA the daughter nucleus mass.
+  //              fZ the daughter nucleus charge. Negative value for 
+  //                 beta+ decays.
+  //
+  ~G4BetaFermiFunction() 
+  // desctructor
+  //
+  {};
+  G4double GetFF(const G4double E);
+  // Returns the BetaFermi factor at energy E.
+  // E kinetic energy of the beta particle in unit of Me.
+  //
+  G4double GetFFN(const G4double E0);
+  // Returns the BetaFermi factor normalisation, i.e. the maximum
+  // value for beta decay with end-point energy E0.
+  // E0 dose not including beta particle rest mass in unit
+  // of Me.
+  //
+private:
+
+  G4int A;
+  G4int Z;
+  
+  static const G4double PI;
+
+private:
+
+  G4double Gamma(G4double X);
+  
+};
+#endif
+ 
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