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This commit is contained in:
Gabriele Cosmo
2017-12-08 12:52:30 +01:00
parent 98e455a940
commit fc6af9e721
2166 changed files with 276760 additions and 100873 deletions
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source/processes/hadronic/models/de_excitation/multifragmentation/src/G4StatMFChannel.cc
+9 -18
View File
@@ -24,7 +24,7 @@
// ********************************************************************
//
//
// $Id: G4StatMFChannel.cc 100379 2016-10-19 15:05:35Z gcosmo $
// $Id: G4StatMFChannel.cc 107060 2017-11-01 15:00:04Z gcosmo $
//
// Hadronic Process: Nuclear De-excitations
// by V. Lara
@@ -42,6 +42,7 @@
#include "Randomize.hh"
#include "G4Pow.hh"
#include "G4Exp.hh"
#include "G4RandomDirection.hh"
class SumCoulombEnergy : public std::binary_function<G4double,G4double,G4double>
{
@@ -177,7 +178,7 @@ void G4StatMFChannel::PlaceFragments(G4int anA)
// Sample the position of the first fragment
G4double R = (Rsys - R0*g4calc->Z13(_theFragments[0]->GetA()))*
g4calc->A13(G4UniformRand());
_theFragments[0]->SetPosition(IsotropicVector(R));
_theFragments[0]->SetPosition(R*G4RandomDirection());
// Sample the position of the remaining fragments
@@ -189,7 +190,7 @@ void G4StatMFChannel::PlaceFragments(G4int anA)
do
{
R = (Rsys - R0*g4calc->Z13((*i)->GetA()))*g4calc->A13(G4UniformRand());
(*i)->SetPosition(IsotropicVector(R));
(*i)->SetPosition(R*G4RandomDirection());
// Check that there are not overlapping fragments
std::deque<G4StatMFFragment*>::iterator j;
@@ -232,7 +233,8 @@ void G4StatMFChannel::FragmentsMomenta(G4int NF, G4int idx,
else if (NF == 1)
{
// We have only one fragment to deal with
p = IsotropicVector(std::sqrt(2.0*_theFragments[idx]->GetNuclearMass()*KinE));
p = std::sqrt(2.0*_theFragments[idx]->GetNuclearMass()*KinE)
*G4RandomDirection();
_theFragments[idx]->SetMomentum(p);
}
else if (NF == 2)
@@ -240,7 +242,7 @@ void G4StatMFChannel::FragmentsMomenta(G4int NF, G4int idx,
// We have only two fragment to deal with
G4double M1 = _theFragments[idx]->GetNuclearMass();
G4double M2 = _theFragments[idx+1]->GetNuclearMass();
p = IsotropicVector(std::sqrt(2.0*KinE*(M1*M2)/(M1+M2)));
p = std::sqrt(2.0*KinE*(M1*M2)/(M1+M2))*G4RandomDirection();
_theFragments[idx]->SetMomentum(p);
_theFragments[idx+1]->SetMomentum(-p);
}
@@ -270,7 +272,8 @@ void G4StatMFChannel::FragmentsMomenta(G4int NF, G4int idx,
// Loop checking, 05-Aug-2015, Vladimir Ivanchenko
while (RandE > 1.0);
E *= T;
p = IsotropicVector(std::sqrt(2.0*E*_theFragments[i]->GetNuclearMass()));
p = std::sqrt(2.0*E*_theFragments[i]->GetNuclearMass())
*G4RandomDirection();
_theFragments[i]->SetMomentum(p);
SummedE += E;
SummedP += p;
@@ -453,15 +456,3 @@ G4ThreeVector G4StatMFChannel::RotateMomentum(G4ThreeVector Pa,
return RotatedMomentum;
}
G4ThreeVector G4StatMFChannel::IsotropicVector(const G4double Magnitude)
// Samples a isotropic random vector with a magnitud given by Magnitude.
// By default Magnitude = 1
{
G4double CosTheta = 1.0 - 2.0*G4UniformRand();
G4double SinTheta = std::sqrt(1.0 - CosTheta*CosTheta);
G4double Phi = twopi*G4UniformRand();
G4ThreeVector Vector(Magnitude*std::cos(Phi)*SinTheta,
Magnitude*std::cos(Phi)*CosTheta,
Magnitude*std::sin(Phi));
return Vector;
}