Geant4-11
G4HETCAlpha.cc
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25//
26//
27// by V. Lara
28//
29// Modified:
30// 23.08.2010 V.Ivanchenko general cleanup, move constructor and destructor
31// the source, use G4Pow
32
33#include "G4HETCAlpha.hh"
34#include "G4Alpha.hh"
35
37 : G4HETCChargedFragment(G4Alpha::Alpha(), &theAlphaCoulombBarrier)
38{}
39
41{}
42
44{
45 G4double C = 0.0;
46 if (theFragZ <= 30)
47 {
48 C = 0.10;
49 }
50 else if (theFragZ <= 50)
51 {
52 C = 0.1 + -((theFragZ-50.)/20.)*0.02;
53 }
54 else if (theFragZ < 70)
55 {
56 C = 0.08 + -((theFragZ-70.)/20.)*0.02;
57 }
58 else
59 {
60 C = 0.06;
61 }
62 return 1.0+C;
63}
64
66{
67 return theCoulombBarrier;
68}
69
71{
72 return 1.0;
73}
74
76{
77 // Number of protons in emitted fragment
78 G4int Pa = theZ;
79 // Number of neutrons in emitted fragment
80 G4int Na = theA - Pa;
81
83
84 G4int P = aFragment.GetNumberOfParticles();
85 G4int H = aFragment.GetNumberOfHoles();
86
87 G4double result = 0.0;
88 if (P > 3)
89 {
90 result = 3.0/(P*(P-1.0)*(P-2.0)*(P-3.0)) *
91 (H*(H-1.0)*(H-2.0)*(H-3.0)*r*r*(r-1.0)*(r-1.0) +
92 2.0*H*(H-1.0)*(H-2.0)*(Pa*r*(1.0-r)*(1.0-r)+Na*r*r*(1.0-r)) +
93 H*(H-1.0)*(Pa*(Pa-1.0)*(1.0-r)*(1.0-r)+4.0*Na*Pa*r*(1.0-r)+Na*(Na-1.0)*r*r) +
94 2*H*(Pa*Na*(Na-1.0)*r+Pa*(Pa-1.0)*Na*(1.0-r)) +
95 Pa*(Pa-1.0)*Na*(Na-1.0));
96
97 result /= 6.0*r*r*(1. - r) *(1. - r);
98 }
99 return std::max(0.0,result);
100}
G4double C(G4double temp)
double G4double
Definition: G4Types.hh:83
int G4int
Definition: G4Types.hh:85
G4int GetNumberOfParticles() const
Definition: G4Fragment.hh:361
G4int GetNumberOfHoles() const
Definition: G4Fragment.hh:381
virtual G4double GetSpinFactor() const
Definition: G4HETCAlpha.cc:70
virtual G4double GetBeta() const
Definition: G4HETCAlpha.cc:65
virtual G4double K(const G4Fragment &aFragment)
Definition: G4HETCAlpha.cc:75
virtual G4double GetAlpha() const
Definition: G4HETCAlpha.cc:43
T max(const T t1, const T t2)
brief Return the largest of the two arguments
static double P[]