include/Geant4/G4INCLNDFHardSphere.hh

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0025 //
0026 // INCL++ intra-nuclear cascade model
0027 // Alain Boudard, CEA-Saclay, France
0028 // Joseph Cugnon, University of Liege, Belgium
0029 // Jean-Christophe David, CEA-Saclay, France
0030 // Pekka Kaitaniemi, CEA-Saclay, France, and Helsinki Institute of Physics, Finland
0031 // Sylvie Leray, CEA-Saclay, France
0032 // Davide Mancusi, CEA-Saclay, France
0033 //
0034 #define INCLXX_IN_GEANT4_MODE 1
0035
0036 #include "globals.hh"
0037
0038 /** \file G4INCLNDFHardSphere.hh
0039  * \brief NDF* class for the deuteron density according to the HardSphere
0040  *        potential.
0041  *
0042  * \date 16 July 2012
0043  * \author Davide Mancusi
0044  */
0045
0046 #ifndef G4INCLNDFHARDSPHERE_HH_
0047 #define G4INCLNDFHARDSPHERE_HH_
0048
0049 #include "G4INCLIFunction1D.hh"
0050 #include "G4INCLParticleTable.hh"
0051 #include "G4INCLDeuteronDensity.hh"
0052
0053 namespace G4INCL {
0054
0055   namespace NuclearDensityFunctions {
0056
0057     class HardSphere : public IFunction1D {
0058       public:
0059         HardSphere(const G4double rMax) :
0060           // We let the function go up to rMax. This can be the Fermi momentum
0061           // for a sphere in momentum space, or the surface radius for a
0062           // hard-sphere nucleus.
0063           IFunction1D(0., rMax),
0064           normalisation(3./std::pow(rMax,3.))
0065       {};
0066
0067         inline G4double operator()(const G4double x) const {
0068           return x*x*normalisation;
0069         }
0070       protected:
0071         const G4double normalisation;
0072     };
0073
0074   }
0075
0076 }
0077
0078 #endif // G4INCLNDFHARDSPHERE_HH_
0079