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>> 27 // $Id: G4StatMFParameters.cc 91834 2015-08-07 07:24:22Z gcosmo $
27 // 28 //
28 // Hadronic Process: Nuclear De-excitations 29 // Hadronic Process: Nuclear De-excitations
29 // by V. Lara 30 // by V. Lara
30 31
31 32
32 #include "G4StatMFParameters.hh" 33 #include "G4StatMFParameters.hh"
33 #include "G4SystemOfUnits.hh" 34 #include "G4SystemOfUnits.hh"
34 #include "G4PhysicalConstants.hh" 35 #include "G4PhysicalConstants.hh"
35 36
36 const G4double G4StatMFParameters::fKappa = 1. 37 const G4double G4StatMFParameters::fKappa = 1.0; // dimensionless
37 38
38 const G4double G4StatMFParameters::fKappaCoulo 39 const G4double G4StatMFParameters::fKappaCoulomb = 2.0; // dimensionless
39 40
40 const G4double G4StatMFParameters::fEpsilon0 = 41 const G4double G4StatMFParameters::fEpsilon0 = 16.0*MeV;
41 42
42 // Bethe-Weizsacker coefficients 43 // Bethe-Weizsacker coefficients
43 const G4double G4StatMFParameters::fE0 = 16.0* 44 const G4double G4StatMFParameters::fE0 = 16.0*MeV;
44 45
45 const G4double G4StatMFParameters::fBeta0 = 18 46 const G4double G4StatMFParameters::fBeta0 = 18.0*MeV;
46 47
47 const G4double G4StatMFParameters::fGamma0 = 2 48 const G4double G4StatMFParameters::fGamma0 = 25.0*MeV;
48 49
49 // Critical temperature (for liquid-gas phase 50 // Critical temperature (for liquid-gas phase transitions)
50 const G4double G4StatMFParameters::fCriticalTe 51 const G4double G4StatMFParameters::fCriticalTemp = 18.0*MeV;
51 52
52 // Nuclear radius 53 // Nuclear radius
53 const G4double G4StatMFParameters::fr0 = 1.17* 54 const G4double G4StatMFParameters::fr0 = 1.17*fermi;
54 55
55 const G4double G4StatMFParameters::fCoulomb = 56 const G4double G4StatMFParameters::fCoulomb = 0.6*(CLHEP::elm_coupling/fr0)*
56 (1.0 - 1.0/std::pow(1.0+fKappaCoulomb,1./3.) 57 (1.0 - 1.0/std::pow(1.0+fKappaCoulomb,1./3.));
57 58
58 G4StatMFParameters::G4StatMFParameters() 59 G4StatMFParameters::G4StatMFParameters()
59 {} 60 {}
60 61
61 G4StatMFParameters::~G4StatMFParameters() 62 G4StatMFParameters::~G4StatMFParameters()
62 {} 63 {}
63 64
64 G4double G4StatMFParameters::GetKappa() 65 G4double G4StatMFParameters::GetKappa()
65 { 66 {
66 return fKappa; 67 return fKappa;
67 } 68 }
68 69
69 G4double G4StatMFParameters::GetKappaCoulomb() 70 G4double G4StatMFParameters::GetKappaCoulomb()
70 { 71 {
71 return fKappaCoulomb; 72 return fKappaCoulomb;
72 } 73 }
73 74
74 G4double G4StatMFParameters::GetEpsilon0() 75 G4double G4StatMFParameters::GetEpsilon0()
75 { 76 {
76 return fEpsilon0; 77 return fEpsilon0;
77 } 78 }
78 79
79 G4double G4StatMFParameters::GetE0() 80 G4double G4StatMFParameters::GetE0()
80 { 81 {
81 return fE0; 82 return fE0;
82 } 83 }
83 84
84 G4double G4StatMFParameters::GetBeta0() 85 G4double G4StatMFParameters::GetBeta0()
85 { 86 {
86 return fBeta0; 87 return fBeta0;
87 } 88 }
88 89
89 G4double G4StatMFParameters::GetGamma0() 90 G4double G4StatMFParameters::GetGamma0()
90 { 91 {
91 return fGamma0; 92 return fGamma0;
92 } 93 }
93 94
94 G4double G4StatMFParameters::GetCriticalTemp() 95 G4double G4StatMFParameters::GetCriticalTemp()
95 { 96 {
96 return fCriticalTemp; 97 return fCriticalTemp;
97 } 98 }
98 99
99 G4double G4StatMFParameters::Getr0() 100 G4double G4StatMFParameters::Getr0()
100 { 101 {
101 return fr0; 102 return fr0;
102 } 103 }
103 104
104 G4double G4StatMFParameters::GetCoulomb() 105 G4double G4StatMFParameters::GetCoulomb()
105 { 106 {
106 return fCoulomb; 107 return fCoulomb;
107 } 108 }
108 109
109 G4double G4StatMFParameters::Beta(G4double T) 110 G4double G4StatMFParameters::Beta(G4double T)
110 { 111 {
111 G4double res = 0.0; 112 G4double res = 0.0;
112 if (T < fCriticalTemp) { 113 if (T < fCriticalTemp) {
113 G4double CriticalTempSqr = fCriticalTemp*f 114 G4double CriticalTempSqr = fCriticalTemp*fCriticalTemp;
114 G4double TempSqr = T*T; 115 G4double TempSqr = T*T;
115 G4double tmp = (CriticalTempSqr-TempSqr)/( 116 G4double tmp = (CriticalTempSqr-TempSqr)/(CriticalTempSqr+TempSqr);
116 117
117 res = fBeta0*tmp*std::pow(tmp,0.25); 118 res = fBeta0*tmp*std::pow(tmp,0.25);
118 } 119 }
119 return res; 120 return res;
120 } 121 }
121 122
122 G4double G4StatMFParameters::DBetaDT(G4double 123 G4double G4StatMFParameters::DBetaDT(G4double T)
123 { 124 {
124 G4double res = 0.0; 125 G4double res = 0.0;
125 if (T < fCriticalTemp) { 126 if (T < fCriticalTemp) {
126 G4double CriticalTempSqr = fCriticalTemp*f 127 G4double CriticalTempSqr = fCriticalTemp*fCriticalTemp;
127 G4double TempSqr = T*T; 128 G4double TempSqr = T*T;
128 G4double tmp = (CriticalTempSqr-TempSqr)/( 129 G4double tmp = (CriticalTempSqr-TempSqr)/(CriticalTempSqr+TempSqr);
129 130
130 res = -5.0*fBeta0*std::pow(tmp,0.25)*(Crit 131 res = -5.0*fBeta0*std::pow(tmp,0.25)*(CriticalTempSqr*T)/
131 ((CriticalTempSqr+TempSqr)*(CriticalTemp 132 ((CriticalTempSqr+TempSqr)*(CriticalTempSqr+TempSqr));
132 } 133 }
133 return res; 134 return res;
134 } 135 }
135 136
136 G4double 137 G4double
137 G4StatMFParameters::GetMaxAverageMultiplicity( 138 G4StatMFParameters::GetMaxAverageMultiplicity(G4int A)
138 { 139 {
139 // Maximun average multiplicity: M_0 = 2.6 f 140 // Maximun average multiplicity: M_0 = 2.6 for A ~ 200
140 // and M_0 = 3.3 for A <= 110 141 // and M_0 = 3.3 for A <= 110
141 G4double MaxAverageMultiplicity = 2.6; 142 G4double MaxAverageMultiplicity = 2.6;
142 if (A <= 110) { MaxAverageMultiplicity = 3.3 143 if (A <= 110) { MaxAverageMultiplicity = 3.3; }
143 return MaxAverageMultiplicity; 144 return MaxAverageMultiplicity;
144 } 145 }
145 146
146 147