Import Geant4 11.1.2 source tree

2023-06-19 17:17:14 +02:00
parent 84a556a9dc
commit aef78ca386
309 changed files with 35572 additions and 34678 deletions
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+//
+// ********************************************************************
+// * 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.          *
+// ********************************************************************
+//
+// V. Ivanchenko, 21 April 2023 Data structure class for gamma levels
+//
+
+#include "G4ParticleHPNucLevel.hh"
+
+#include "G4Gamma.hh"
+#include "G4RandomDirection.hh"
+#include "Randomize.hh"
+
+G4ParticleHPNucLevel::G4ParticleHPNucLevel(G4double e) : levelEnergy(e) {}
+
+void G4ParticleHPNucLevel::AddGamma(G4double e, G4double w, G4int idx)
+{
+  gammaData x;
+  x.gammaEnergy = e;
+  x.cumProbability = w;
+  x.next = idx;
+  gammas.push_back(x);
+  ++nGammas;
+}
+
+void G4ParticleHPNucLevel::Normalize()
+{
+  if (gammas.empty()) {
+    return;
+  }
+  G4double sum = 0.0;
+  for (auto& gam : gammas) {
+    sum += gam.cumProbability;
+  }
+  if (sum <= 0.0) {
+    return;
+  }
+
+  G4double norm = 1.0 / sum;
+  sum = 0;
+  for (auto& gam : gammas) {
+    sum += norm * gam.cumProbability;
+    gam.cumProbability = sum;
+  }
+  gammas[nGammas - 1].cumProbability = 1.0;
+}
+
+G4ReactionProduct* G4ParticleHPNucLevel::GetDecayGamma(G4int& idx) const
+{
+  if (gammas.empty()) {
+    return nullptr;
+  }
+  G4double q = G4UniformRand();
+  G4double e = 0.0;
+  for (auto& gam : gammas) {
+    if (q <= gam.cumProbability) {
+      e = gam.gammaEnergy;
+      idx = gam.next;
+      break;
+    }
+  }
+  if (e <= 0.0) {
+    return nullptr;
+  }
+  G4ThreeVector p = G4RandomDirection();
+  p *= e;
+  auto res = new G4ReactionProduct(G4Gamma::Gamma());
+  res->SetMomentum(p);
+  res->SetKineticEnergy(e);
+  return res;
+}