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>> 27 // $Id: G4StatMFParameters.cc 68724 2013-04-05 09:26:32Z 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 35
36 const G4double G4StatMFParameters::fKappa = 1. 36 const G4double G4StatMFParameters::fKappa = 1.0; // dimensionless
37 37
38 const G4double G4StatMFParameters::fKappaCoulo 38 const G4double G4StatMFParameters::fKappaCoulomb = 2.0; // dimensionless
39 39
40 const G4double G4StatMFParameters::fEpsilon0 = 40 const G4double G4StatMFParameters::fEpsilon0 = 16.0*MeV;
41 41
42 // Bethe-Weizsacker coefficients 42 // Bethe-Weizsacker coefficients
43 const G4double G4StatMFParameters::fE0 = 16.0* 43 const G4double G4StatMFParameters::fE0 = 16.0*MeV;
44 44
45 const G4double G4StatMFParameters::fBeta0 = 18 45 const G4double G4StatMFParameters::fBeta0 = 18.0*MeV;
46 46
47 const G4double G4StatMFParameters::fGamma0 = 2 47 const G4double G4StatMFParameters::fGamma0 = 25.0*MeV;
48 48
49 // Critical temperature (for liquid-gas phase 49 // Critical temperature (for liquid-gas phase transitions)
50 const G4double G4StatMFParameters::fCriticalTe 50 const G4double G4StatMFParameters::fCriticalTemp = 18.0*MeV;
51 51
52 // Nuclear radius 52 // Nuclear radius
53 const G4double G4StatMFParameters::fr0 = 1.17* 53 const G4double G4StatMFParameters::fr0 = 1.17*fermi;
54 54
55 const G4double G4StatMFParameters::fCoulomb = <<
56 (1.0 - 1.0/std::pow(1.0+fKappaCoulomb,1./3.) <<
57 <<
58 G4StatMFParameters::G4StatMFParameters() 55 G4StatMFParameters::G4StatMFParameters()
59 {} 56 {}
60 57
61 G4StatMFParameters::~G4StatMFParameters() 58 G4StatMFParameters::~G4StatMFParameters()
62 {} 59 {}
63 60
64 G4double G4StatMFParameters::GetKappa() 61 G4double G4StatMFParameters::GetKappa()
65 { 62 {
66 return fKappa; 63 return fKappa;
67 } 64 }
68 65
69 G4double G4StatMFParameters::GetKappaCoulomb() 66 G4double G4StatMFParameters::GetKappaCoulomb()
70 { 67 {
71 return fKappaCoulomb; 68 return fKappaCoulomb;
72 } 69 }
73 70
74 G4double G4StatMFParameters::GetEpsilon0() 71 G4double G4StatMFParameters::GetEpsilon0()
75 { 72 {
76 return fEpsilon0; 73 return fEpsilon0;
77 } 74 }
78 75
79 G4double G4StatMFParameters::GetE0() 76 G4double G4StatMFParameters::GetE0()
80 { 77 {
81 return fE0; 78 return fE0;
82 } 79 }
83 80
84 G4double G4StatMFParameters::GetBeta0() 81 G4double G4StatMFParameters::GetBeta0()
85 { 82 {
86 return fBeta0; 83 return fBeta0;
87 } 84 }
88 85
89 G4double G4StatMFParameters::GetGamma0() 86 G4double G4StatMFParameters::GetGamma0()
90 { 87 {
91 return fGamma0; 88 return fGamma0;
92 } 89 }
93 90
94 G4double G4StatMFParameters::GetCriticalTemp() 91 G4double G4StatMFParameters::GetCriticalTemp()
95 { 92 {
96 return fCriticalTemp; 93 return fCriticalTemp;
97 } 94 }
98 95
99 G4double G4StatMFParameters::Getr0() 96 G4double G4StatMFParameters::Getr0()
100 { 97 {
101 return fr0; 98 return fr0;
102 } <<
103 <<
104 G4double G4StatMFParameters::GetCoulomb() <<
105 { <<
106 return fCoulomb; <<
107 } 99 }
108 100
109 G4double G4StatMFParameters::Beta(G4double T) 101 G4double G4StatMFParameters::Beta(G4double T)
110 { 102 {
111 G4double res = 0.0; 103 G4double res = 0.0;
112 if (T < fCriticalTemp) { 104 if (T < fCriticalTemp) {
113 G4double CriticalTempSqr = fCriticalTemp*f 105 G4double CriticalTempSqr = fCriticalTemp*fCriticalTemp;
114 G4double TempSqr = T*T; 106 G4double TempSqr = T*T;
115 G4double tmp = (CriticalTempSqr-TempSqr)/( 107 G4double tmp = (CriticalTempSqr-TempSqr)/(CriticalTempSqr+TempSqr);
116 108
117 res = fBeta0*tmp*std::pow(tmp,0.25); 109 res = fBeta0*tmp*std::pow(tmp,0.25);
118 } 110 }
119 return res; 111 return res;
120 } 112 }
121 113
122 G4double G4StatMFParameters::DBetaDT(G4double 114 G4double G4StatMFParameters::DBetaDT(G4double T)
123 { 115 {
124 G4double res = 0.0; 116 G4double res = 0.0;
125 if (T < fCriticalTemp) { 117 if (T < fCriticalTemp) {
126 G4double CriticalTempSqr = fCriticalTemp*f 118 G4double CriticalTempSqr = fCriticalTemp*fCriticalTemp;
127 G4double TempSqr = T*T; 119 G4double TempSqr = T*T;
128 G4double tmp = (CriticalTempSqr-TempSqr)/( 120 G4double tmp = (CriticalTempSqr-TempSqr)/(CriticalTempSqr+TempSqr);
129 121
130 res = -5.0*fBeta0*std::pow(tmp,0.25)*(Crit 122 res = -5.0*fBeta0*std::pow(tmp,0.25)*(CriticalTempSqr*T)/
131 ((CriticalTempSqr+TempSqr)*(CriticalTemp 123 ((CriticalTempSqr+TempSqr)*(CriticalTempSqr+TempSqr));
132 } 124 }
133 return res; 125 return res;
134 } 126 }
135 127
136 G4double 128 G4double
137 G4StatMFParameters::GetMaxAverageMultiplicity( 129 G4StatMFParameters::GetMaxAverageMultiplicity(G4int A)
138 { 130 {
139 // Maximun average multiplicity: M_0 = 2.6 f 131 // Maximun average multiplicity: M_0 = 2.6 for A ~ 200
140 // and M_0 = 3.3 for A <= 110 132 // and M_0 = 3.3 for A <= 110
141 G4double MaxAverageMultiplicity = 2.6; 133 G4double MaxAverageMultiplicity = 2.6;
142 if (A <= 110) { MaxAverageMultiplicity = 3.3 134 if (A <= 110) { MaxAverageMultiplicity = 3.3; }
143 return MaxAverageMultiplicity; 135 return MaxAverageMultiplicity;
144 } 136 }
145 137
146 138