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25 //
26 // INCL++ intra-nuclear cascade model
27 // Alain Boudard, CEA-Saclay, France
28 // Joseph Cugnon, University of Liege, Belgium
29 // Jean-Christophe David, CEA-Saclay, France
30 // Pekka Kaitaniemi, CEA-Saclay, France, and Helsinki Institute of Physics, Finland
31 // Sylvie Leray, CEA-Saclay, France
32 // Davide Mancusi, CEA-Saclay, France
33 //
34 #define INCLXX_IN_GEANT4_MODE 1
35
36 #include "globals.hh"
37
38 /** \file G4INCLCoulombDistortion.hh
39 * \brief Static class for selecting Coulomb distortion.
40 *
41 * \date 14 February 2011
42 * \author Davide Mancusi
43 */
44
45 #ifndef G4INCLCOULOMBDISTORTION_HH_
46 #define G4INCLCOULOMBDISTORTION_HH_
47
48 #include "G4INCLParticle.hh"
49 #include "G4INCLNucleus.hh"
50 #include "G4INCLICoulomb.hh"
51 #include "G4INCLConfig.hh"
52
53 namespace G4INCL {
54
55 /**
56 * Coulomb distortion
57 */
58 namespace CoulombDistortion {
59 /** \brief Modify the momentum of an incoming particle and position it on
60 * the surface of the nucleus.
61 *
62 * This method places Particle p on the surface of Nucleus n and modifies
63 * the direction of its momentum to be tangent to the Coulomb trajectory in
64 * that point.
65 *
66 * The input particle has to be prepared with its asymptotic momentum. Its
67 * position is used only for the purpose of computing the asymptotic impact
68 * parameter; in other words, this method only uses the components of the
69 * position that are perpendicular to the momentum. The remaining component
70 * is not used, and can be set to any value.
71 *
72 * This method returns a ParticleEntry avatar for the projectile.
73 *
74 * \param p incoming particle
75 * \param n distorting nucleus
76 * \return the ParticleEntryAvatar for the projectile particle
77 **/
78 ParticleEntryAvatar *bringToSurface(Particle *p, Nucleus * const n);
79
80 /** \brief Modify the momentum of an incoming cluster and position it on
81 * the surface of the target.
82 *
83 * Same as the Particle-based bringToSurface method, but for incoming heavy
84 * ions.
85 *
86 * This method returns a list of ParticleEntry avatars for the participant
87 * nucleons
88 *
89 * \param c incoming heavy ion
90 * \param n distorting nucleus
91 * \return a list of ParticleEntryAvatars
92 **/
93 IAvatarList bringToSurface(Cluster * const c, Nucleus * const n);
94
95 /** \brief Modify the momentum of an outgoing particle. */
96 void distortOut(ParticleList const &pL, Nucleus const * const n);
97
98 /** \brief Return the maximum impact parameter for Coulomb-distorted
99 * trajectories. **/
100 G4double maxImpactParameter(ParticleSpecies const &p, const G4double kinE, Nucleus const * const n);
101
102 /** \brief Return the maximum impact parameter for Coulomb-distorted
103 * trajectories. **/
104 G4double maxImpactParameter(Particle const * const p, Nucleus const * const n);
105
106 /** \brief Set the Coulomb-distortion algorithm. */
107 void setCoulomb(ICoulomb * const coulomb);
108
109 /** \brief Delete the Coulomb-distortion object. */
110 void deleteCoulomb();
111
112 /// \brief Initialize the Coulomb-distortion algorithm
113 void initialize(Config const * const theConfig);
114
115 }
116 }
117
118 #endif /* G4INCLCOULOMBDISTORTION_HH_ */
119