Geant4_10
G4NeutronHPWattSpectrum.cc
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25 //
26 // neutron_hp -- source file
27 // J.P. Wellisch, Nov-1996
28 // A prototype of the low energy neutron transport model.
29 
31 #include "G4SystemOfUnits.hh"
32 
34  {
35  G4double a = theApar.GetY(anEnergy)*eV;
36  G4double b = theBpar.GetY(anEnergy)/eV;
38  G4double random, cut, max;
39  max = std::sinh(std::sqrt(b*15.*a));
40  do
41  {
42  random = G4UniformRand();
43  result = -a*std::log(random);
44  cut = G4UniformRand();
45  }
46  while(cut>std::sinh(std::sqrt(b*result))/max);
47  return result;
48  }
G4double GetY(G4double x)
tuple a
Definition: test.py:11
G4double G4NeutronHPJENDLHEData::G4double result
tuple b
Definition: test.py:12
#define G4UniformRand()
Definition: Randomize.hh:87
T max(const T t1, const T t2)
brief Return the largest of the two arguments
G4double Sample(G4double anEnergy)
double G4double
Definition: G4Types.hh:76