include/Geant4/G4INCLNDFModifiedHarmonicOscillator.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 G4INCLNDFModifiedHarmonicOscillator.hh
0039  * \brief Class for modified harmonic oscillator density
0040  *
0041  * \date 16 July 2012
0042  * \author Davide Mancusi
0043  */
0044
0045 #ifndef G4INCLNDFMODIFIEDHARMONICOSCILLATOR_HH_
0046 #define G4INCLNDFMODIFIEDHARMONICOSCILLATOR_HH_
0047
0048 #include "G4INCLIFunction1D.hh"
0049 #include <cmath>
0050 #include <algorithm>
0051
0052 namespace G4INCL {
0053
0054   namespace NuclearDensityFunctions {
0055
0056     class ModifiedHarmonicOscillatorRP : public IFunction1D {
0057       public:
0058         ModifiedHarmonicOscillatorRP(G4double radiusParameter, G4double maximumRadius, G4double diffusenessParameter) :
0059           IFunction1D(0., maximumRadius),
0060           theRadiusParameter(radiusParameter),
0061           theDiffusenessParameter(diffusenessParameter)
0062       {}
0063
0064         inline G4double operator()(const G4double r) const {
0065           const G4double arg = std::pow((r/theDiffusenessParameter),2);
0066           return std::max(0., -2.0* r*r *arg * (theRadiusParameter - 1.0 - theRadiusParameter*arg)*std::exp(-arg));
0067         }
0068
0069         inline G4double getRadiusParameter() { return theRadiusParameter; };
0070         inline G4double getDiffusenessParameter() { return theDiffusenessParameter; };
0071
0072         inline void setRadiusParameter(G4double r) { theRadiusParameter = r; };
0073         inline void setDiffusenessParameter(G4double a) { theDiffusenessParameter = a; };
0074
0075       protected:
0076         G4double theRadiusParameter, theDiffusenessParameter;
0077     };
0078
0079     class ModifiedHarmonicOscillator : public IFunction1D {
0080       public:
0081         ModifiedHarmonicOscillator(G4double radiusParameter, G4double maximumRadius, G4double diffusenessParameter) :
0082           IFunction1D(0., maximumRadius),
0083           theRadiusParameter(radiusParameter),
0084           theDiffusenessParameter(diffusenessParameter),
0085           normalisation(2./((theDiffusenessParameter+theRadiusParameter)*std::pow(theDiffusenessParameter,2.)))
0086       {}
0087
0088         inline G4double operator()(const G4double r) const {
0089           const G4double arg = std::pow((r/theDiffusenessParameter),2);
0090           return r*r*( 1. + theRadiusParameter * arg) * std::exp(-arg);
0091         }
0092
0093         inline G4double getRadiusParameter() { return theRadiusParameter; };
0094         inline G4double getDiffusenessParameter() { return theDiffusenessParameter; };
0095
0096         inline void setRadiusParameter(G4double r) { theRadiusParameter = r; };
0097         inline void setDiffusenessParameter(G4double a) { theDiffusenessParameter = a; };
0098
0099       protected:
0100         G4double theRadiusParameter, theDiffusenessParameter;
0101         const G4double normalisation;
0102     };
0103
0104   }
0105
0106 }
0107
0108 #endif // G4INCLNDFMODIFIEDHARMONICOSCILLATOR_HH_
0109