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This commit is contained in:
Gabriele Cosmo
2016-06-08 16:10:37 +02:00
parent 137e303ecc
commit 36c080dca6
3464 changed files with 119310 additions and 52696 deletions
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source/processes/hadronic/util/src/G4Nucleus.cc
+49 -11
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@@ -1,12 +1,26 @@
// This code implementation is the intellectual property of
// the GEANT4 collaboration.
//
// By copying, distributing or modifying the Program (or any work
// based on the Program) you indicate your acceptance of this statement,
// and all its terms.
// ********************************************************************
// * DISCLAIMER *
// * *
// * The following disclaimer summarizes all the specific disclaimers *
// * of contributors to this software. The specific disclaimers,which *
// * govern, are listed with their locations in: *
// * http://cern.ch/geant4/license *
// * *
// * 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. *
// * *
// * This code implementation is the intellectual property of the *
// * GEANT4 collaboration. *
// * By copying, distributing or modifying the Program (or any work *
// * based on the Program) you indicate your acceptance of this *
// * statement, and all its terms. *
// ********************************************************************
//
//
// $Id: G4Nucleus.cc,v 1.5 2000/08/03 08:50:48 gcosmo Exp $
// GEANT4 tag $Name: geant4-03-01 $
//
// original by H.P. Wellisch
// modified by J.L. Chuma, TRIUMF, 19-Nov-1996
@@ -24,14 +38,38 @@
#include "G4Nucleus.hh"
#include "Randomize.hh"
G4ReactionProduct G4Nucleus::GetThermalNucleus(G4double targetMass) const
G4ReactionProduct G4Nucleus::
GetBiasedThermalNucleus(G4double aMass, G4ThreeVector aVelocity, G4double temp) const
{
G4double velMag = aVelocity.mag();
G4ReactionProduct result;
G4double value = 0;
G4double random = 1;
G4double norm = 3.*sqrt(k_Boltzmann*temp*aMass*G4Neutron::Neutron()->GetPDGMass());
norm /= G4Neutron::Neutron()->GetPDGMass();
norm *= 5.;
norm += velMag;
norm /= velMag;
while(value/norm<random)
{
result = GetThermalNucleus(aMass, temp);
G4ThreeVector targetVelocity = 1./result.GetMass()*result.GetMomentum();
value = (targetVelocity+aVelocity).mag()/velMag;
random = G4UniformRand();
}
return result;
}
G4ReactionProduct G4Nucleus::GetThermalNucleus(G4double targetMass, G4double temp) const
{
G4double currentTemp = temp;
if(currentTemp < 0) currentTemp = theTemp;
G4ReactionProduct theTarget;
theTarget.SetMass(targetMass*G4Neutron::Neutron()->GetPDGMass());
G4double px, py, pz;
px = GetThermalPz(theTarget.GetMass(), theTemp);
py = GetThermalPz(theTarget.GetMass(), theTemp);
pz = GetThermalPz(theTarget.GetMass(), theTemp);
px = GetThermalPz(theTarget.GetMass(), currentTemp);
py = GetThermalPz(theTarget.GetMass(), currentTemp);
pz = GetThermalPz(theTarget.GetMass(), currentTemp);
theTarget.SetMomentum(px, py, pz);
G4double tMom = sqrt(px*px+py*py+pz*pz);
G4double tEtot = sqrt((tMom+theTarget.GetMass())*