Gabriele Cosmo
280 lines
8.7 KiB
C++
280 lines
8.7 KiB
C++
//
|
|
// ********************************************************************
|
|
// * License and Disclaimer *
|
|
// * *
|
|
// * The Geant4 software is copyright of the Copyright Holders of *
|
|
// * the Geant4 Collaboration. It is provided under the terms and *
|
|
// * conditions of the Geant4 Software License, included in the file *
|
|
// * LICENSE and available at http://cern.ch/geant4/license . These *
|
|
// * include a list of copyright holders. *
|
|
// * *
|
|
// * Neither the authors of this software system, nor their employing *
|
|
// * institutes,nor the agencies providing financial support for this *
|
|
// * work make any representation or warranty, express or implied, *
|
|
// * regarding this software system or assume any liability for its *
|
|
// * use. Please see the license in the file LICENSE and URL above *
|
|
// * for the full disclaimer and the limitation of liability. *
|
|
// * *
|
|
// * This code implementation is the result of the scientific and *
|
|
// * technical work of the GEANT4 collaboration. *
|
|
// * By using, copying, modifying or distributing the software (or *
|
|
// * any work based on the software) you agree to acknowledge its *
|
|
// * use in resulting scientific publications, and indicate your *
|
|
// * acceptance of all terms of the Geant4 Software license. *
|
|
// ********************************************************************
|
|
//
|
|
//
|
|
// $Id: G4StatMFMacroCanonical.cc 100379 2016-10-19 15:05:35Z gcosmo $
|
|
//
|
|
// by V. Lara
|
|
// --------------------------------------------------------------------
|
|
//
|
|
// Modified:
|
|
// 25.07.08 I.Pshenichnov (in collaboration with Alexander Botvina and Igor
|
|
// Mishustin (FIAS, Frankfurt, INR, Moscow and Kurchatov Institute,
|
|
// Moscow, pshenich@fias.uni-frankfurt.de) fixed infinite loop for
|
|
// a fagment with Z=A; fixed memory leak
|
|
|
|
#include "G4StatMFMacroCanonical.hh"
|
|
#include "G4PhysicalConstants.hh"
|
|
#include "G4SystemOfUnits.hh"
|
|
#include "G4Pow.hh"
|
|
|
|
// constructor
|
|
G4StatMFMacroCanonical::G4StatMFMacroCanonical(const G4Fragment & theFragment)
|
|
{
|
|
|
|
// Get memory for clusters
|
|
_theClusters.push_back(new G4StatMFMacroNucleon); // Size 1
|
|
_theClusters.push_back(new G4StatMFMacroBiNucleon); // Size 2
|
|
_theClusters.push_back(new G4StatMFMacroTriNucleon); // Size 3
|
|
_theClusters.push_back(new G4StatMFMacroTetraNucleon); // Size 4
|
|
for (G4int i = 4; i < theFragment.GetA_asInt(); i++)
|
|
_theClusters.push_back(new G4StatMFMacroMultiNucleon(i+1)); // Size 5 ... A
|
|
|
|
// Perform class initialization
|
|
Initialize(theFragment);
|
|
|
|
}
|
|
|
|
// destructor
|
|
G4StatMFMacroCanonical::~G4StatMFMacroCanonical()
|
|
{
|
|
// garbage collection
|
|
if (!_theClusters.empty())
|
|
{
|
|
std::for_each(_theClusters.begin(),_theClusters.end(),DeleteFragment());
|
|
}
|
|
}
|
|
|
|
// Initialization method
|
|
void G4StatMFMacroCanonical::Initialize(const G4Fragment & theFragment)
|
|
{
|
|
|
|
G4int A = theFragment.GetA_asInt();
|
|
G4int Z = theFragment.GetZ_asInt();
|
|
G4double x = 1.0 - 2.0*Z/G4double(A);
|
|
G4Pow* g4calc = G4Pow::GetInstance();
|
|
|
|
// Free Internal energy at T = 0
|
|
__FreeInternalE0 = A*( -G4StatMFParameters::GetE0() + // Volume term (for T = 0)
|
|
G4StatMFParameters::GetGamma0()*x*x) // Symmetry term
|
|
+ G4StatMFParameters::GetBeta0()*g4calc->Z23(A) + // Surface term (for T = 0)
|
|
0.6*elm_coupling*Z*Z/(G4StatMFParameters::Getr0()* // Coulomb term
|
|
g4calc->Z13(A));
|
|
|
|
CalculateTemperature(theFragment);
|
|
return;
|
|
}
|
|
|
|
void G4StatMFMacroCanonical::CalculateTemperature(const G4Fragment & theFragment)
|
|
{
|
|
// Excitation Energy
|
|
G4double U = theFragment.GetExcitationEnergy();
|
|
|
|
G4int A = theFragment.GetA_asInt();
|
|
G4int Z = theFragment.GetZ_asInt();
|
|
|
|
// Fragment Multiplicity
|
|
G4double FragMult = std::max((1.0+(2.31/MeV)*(U/A - 3.5*MeV))*A/100.0, 2.0);
|
|
|
|
// Parameter Kappa
|
|
G4Pow* g4calc = G4Pow::GetInstance();
|
|
_Kappa = (1.0+elm_coupling*(g4calc->A13(FragMult)-1)/
|
|
(G4StatMFParameters::Getr0()*g4calc->Z13(A)));
|
|
_Kappa = _Kappa*_Kappa*_Kappa - 1.0;
|
|
|
|
G4StatMFMacroTemperature * theTemp = new
|
|
G4StatMFMacroTemperature(A,Z,U,__FreeInternalE0,_Kappa,&_theClusters);
|
|
|
|
__MeanTemperature = theTemp->CalcTemperature();
|
|
_ChemPotentialNu = theTemp->GetChemicalPotentialNu();
|
|
_ChemPotentialMu = theTemp->GetChemicalPotentialMu();
|
|
__MeanMultiplicity = theTemp->GetMeanMultiplicity();
|
|
__MeanEntropy = theTemp->GetEntropy();
|
|
|
|
delete theTemp;
|
|
|
|
return;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
G4StatMFChannel * G4StatMFMacroCanonical::ChooseAandZ(const G4Fragment &theFragment)
|
|
// Calculate total fragments multiplicity, fragment atomic numbers and charges
|
|
{
|
|
G4int A = theFragment.GetA_asInt();
|
|
G4int Z = theFragment.GetZ_asInt();
|
|
|
|
std::vector<G4int> ANumbers(A);
|
|
|
|
G4double Multiplicity = ChooseA(A,ANumbers);
|
|
|
|
std::vector<G4int> FragmentsA;
|
|
|
|
G4int i = 0;
|
|
for (i = 0; i < A; i++)
|
|
{
|
|
for (G4int j = 0; j < ANumbers[i]; j++) FragmentsA.push_back(i+1);
|
|
}
|
|
|
|
// Sort fragments in decreasing order
|
|
G4int im = 0;
|
|
for (G4int j = 0; j < Multiplicity; j++)
|
|
{
|
|
G4int FragmentsAMax = 0;
|
|
im = j;
|
|
for (i = j; i < Multiplicity; i++)
|
|
{
|
|
if (FragmentsA[i] <= FragmentsAMax) { continue; }
|
|
else
|
|
{
|
|
im = i;
|
|
FragmentsAMax = FragmentsA[im];
|
|
}
|
|
}
|
|
if (im != j)
|
|
{
|
|
FragmentsA[im] = FragmentsA[j];
|
|
FragmentsA[j] = FragmentsAMax;
|
|
}
|
|
}
|
|
return ChooseZ(Z,FragmentsA);
|
|
}
|
|
|
|
G4double G4StatMFMacroCanonical::ChooseA(G4int A, std::vector<G4int> & ANumbers)
|
|
// Determines fragments multiplicities and compute total fragment multiplicity
|
|
{
|
|
G4double multiplicity = 0.0;
|
|
G4int i;
|
|
|
|
std::vector<G4double> AcumMultiplicity;
|
|
AcumMultiplicity.reserve(A);
|
|
|
|
AcumMultiplicity.push_back((*(_theClusters.begin()))->GetMeanMultiplicity());
|
|
for (std::vector<G4VStatMFMacroCluster*>::iterator it = _theClusters.begin()+1;
|
|
it != _theClusters.end(); ++it)
|
|
{
|
|
AcumMultiplicity.push_back((*it)->GetMeanMultiplicity()+AcumMultiplicity.back());
|
|
}
|
|
|
|
G4int CheckA;
|
|
do {
|
|
CheckA = -1;
|
|
G4int SumA = 0;
|
|
G4int ThisOne = 0;
|
|
multiplicity = 0.0;
|
|
for (i = 0; i < A; i++) ANumbers[i] = 0;
|
|
do {
|
|
G4double RandNumber = G4UniformRand()*__MeanMultiplicity;
|
|
for (i = 0; i < A; i++) {
|
|
if (RandNumber < AcumMultiplicity[i]) {
|
|
ThisOne = i;
|
|
break;
|
|
}
|
|
}
|
|
multiplicity++;
|
|
ANumbers[ThisOne] = ANumbers[ThisOne]+1;
|
|
SumA += ThisOne+1;
|
|
CheckA = A - SumA;
|
|
|
|
// Loop checking, 05-Aug-2015, Vladimir Ivanchenko
|
|
} while (CheckA > 0);
|
|
|
|
// Loop checking, 05-Aug-2015, Vladimir Ivanchenko
|
|
} while (CheckA < 0 || std::abs(__MeanMultiplicity - multiplicity) > std::sqrt(__MeanMultiplicity) + 0.5);
|
|
|
|
return multiplicity;
|
|
}
|
|
|
|
G4StatMFChannel * G4StatMFMacroCanonical::ChooseZ(G4int & Z,
|
|
std::vector<G4int> & FragmentsA)
|
|
//
|
|
{
|
|
G4Pow* g4calc = G4Pow::GetInstance();
|
|
std::vector<G4int> FragmentsZ;
|
|
|
|
G4int DeltaZ = 0;
|
|
G4double CP = G4StatMFParameters::GetCoulomb();
|
|
G4int multiplicity = FragmentsA.size();
|
|
|
|
do {
|
|
FragmentsZ.clear();
|
|
G4int SumZ = 0;
|
|
for (G4int i = 0; i < multiplicity; i++)
|
|
{
|
|
G4int A = FragmentsA[i];
|
|
if (A <= 1)
|
|
{
|
|
G4double RandNumber = G4UniformRand();
|
|
if (RandNumber < (*_theClusters.begin())->GetZARatio())
|
|
{
|
|
FragmentsZ.push_back(1);
|
|
SumZ += FragmentsZ[i];
|
|
}
|
|
else FragmentsZ.push_back(0);
|
|
}
|
|
else
|
|
{
|
|
G4double RandZ;
|
|
G4double CC = 8.0*G4StatMFParameters::GetGamma0()
|
|
+ 2*CP*g4calc->Z23(FragmentsA[i]);
|
|
G4double ZMean;
|
|
if (FragmentsA[i] > 1 && FragmentsA[i] < 5) { ZMean = 0.5*FragmentsA[i]; }
|
|
else {
|
|
ZMean = FragmentsA[i]*(4.0*G4StatMFParameters::GetGamma0()
|
|
+ _ChemPotentialNu)/CC;
|
|
}
|
|
G4double ZDispersion = std::sqrt(FragmentsA[i]*__MeanTemperature/CC);
|
|
G4int z;
|
|
do
|
|
{
|
|
RandZ = G4RandGauss::shoot(ZMean,ZDispersion);
|
|
z = G4lrint(RandZ+0.5);
|
|
// Loop checking, 05-Aug-2015, Vladimir Ivanchenko
|
|
} while (z < 0 || z > A);
|
|
FragmentsZ.push_back(z);
|
|
SumZ += z;
|
|
}
|
|
}
|
|
DeltaZ = Z - SumZ;
|
|
// Loop checking, 05-Aug-2015, Vladimir Ivanchenko
|
|
} while (std::abs(DeltaZ) > 1);
|
|
|
|
// DeltaZ can be 0, 1 or -1
|
|
G4int idx = 0;
|
|
if (DeltaZ < 0.0)
|
|
{
|
|
while (FragmentsZ[idx] < 1) { ++idx; }
|
|
}
|
|
FragmentsZ[idx] += DeltaZ;
|
|
|
|
G4StatMFChannel * theChannel = new G4StatMFChannel;
|
|
for (G4int i = multiplicity-1; i >= 0; i--)
|
|
{
|
|
theChannel->CreateFragment(FragmentsA[i],FragmentsZ[i]);
|
|
}
|
|
|
|
return theChannel;
|
|
}
|