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geant4/source/processes/electromagnetic/dna/models/include/G4DNAIRTMoleculeEncounterStepper.hh
2023-12-08 10:43:34 +01:00

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/*
* G4DNAIRTMoleculeEncounterStepper.hh
*
* Created on: Jul 23, 2019
* Author: W. G. Shin
* J. Ramos-Mendez and B. Faddegon
*/
#pragma once
#include "G4VITTimeStepComputer.hh"
#include "G4KDTreeResult.hh"
#include "G4ITReaction.hh"
#include "G4ITTrackHolder.hh"
class G4VDNAReactionModel;
class G4DNAMolecularReactionTable;
class G4MolecularConfiguration;
class G4Molecule;
/**
* Given a molecule G4DNAIRTMoleculeEncounterStepper will calculate for its possible reactants
* what will be the minimum encounter time and the associated molecules.*
*
* This model includes dynamical time steps as explained in
* "Computer-Aided Stochastic Modeling of the Radiolysis of Liquid Water",
* V. Michalik, M. Begusová, E. A. Bigildeev,
* Radiation Research, Vol. 149, No. 3 (Mar., 1998), pp. 224-236
*
*/
class G4DNAIRTMoleculeEncounterStepper : public G4VITTimeStepComputer
{
public:
G4DNAIRTMoleculeEncounterStepper();
~G4DNAIRTMoleculeEncounterStepper() override;
G4DNAIRTMoleculeEncounterStepper(const G4DNAIRTMoleculeEncounterStepper&) = delete;
G4DNAIRTMoleculeEncounterStepper& operator=(const G4DNAIRTMoleculeEncounterStepper&) = delete;
void Prepare() override;
G4double CalculateStep(const G4Track&, const G4double&) override;
G4double CalculateMinTimeStep(G4double, G4double) override;
void SetReactionModel(G4VDNAReactionModel*);
G4VDNAReactionModel* GetReactionModel();
void SetVerbose(int);
// Final time returned when reaction is available in the reaction table = 1
// All details = 2
private:
void InitializeForNewTrack();
class Utils;
void CheckAndRecordResults(const Utils&,
#ifdef G4VERBOSE
const G4double reactionRange,
#endif
G4KDTreeResultHandle&);
G4bool fHasAlreadyReachedNullTime{false};
const G4DNAMolecularReactionTable*& fMolecularReactionTable;
G4VDNAReactionModel* fReactionModel{nullptr};
G4ITReactionSet* fReactionSet;
G4ITTrackHolder* fpTrackContainer;
G4int fVerbose{0};
class Utils
{
public:
Utils(const G4Track& tA, const G4MolecularConfiguration* mB);
~Utils() = default;
G4double GetConstant() const
{
return fConstant;
}
const G4Track& fpTrackA;
const G4MolecularConfiguration* fpMoleculeB;
const G4Molecule* fpMoleculeA;
G4double fDA;
G4double fDB;
G4double fConstant;
};
};