Gabriele Cosmo
129 lines
5.2 KiB
C++
129 lines
5.2 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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//
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// Author: Luciano Pandola
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//
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// History:
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// -----------
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// 18 Mar 2010 L. Pandola 1st implementation.
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// 09 Mar 2012 L. Pandola Add public method (and machinery) to return
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// the absolute and the normalized shell cross
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// sections independently.
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//
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// -------------------------------------------------------------------
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//
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// Class description:
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// This class is a container for cross sections and transport momenta
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// calculated by Penelope models (ionisation, bremsstrahlung). It stores
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// PhysicsTables/PhysicsVectors of
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// a) the "hard quantities" (above the threshold), 0-th order (cross section)
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// 1-st order (= stopping XS), 2-nd order (= straggling XS)
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// b) the "soft quantities" (below threshold), 0-th order (cross section)
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// 1-st order (= stopping XS), 2-nd order (= straggling XS)
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// c) total hard cross sections for individual oscillators
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// vs. energy. Two versions are available, one with normalized values
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// (good for sampling) and one with absolute values.
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//
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// The interface *always* uses energy and cross sections, while internally
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// log(energy) and log(XS) are used.
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//
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// One instance per each cut-material couple should be created by the
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// calling class.
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//
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// Public method to retrieve hard cross section, soft stopping power,
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// total cross section and hard shell cross sections.
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//
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// Notice: all quantities stored here are *per molecule*
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//
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// -------------------------------------------------------------------
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#ifndef G4PENELOPECROSSSECTION_HH
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#define G4PENELOPECROSSSECTION_HH 1
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#include "globals.hh"
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class G4PhysicsTable;
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class G4DataVector;
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class G4PenelopeCrossSection
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{
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public:
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//constructor: one has to give the number of points in each PhysicsVector
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//(= dimension of the energy grid) and the number of shells (0 is the
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//default).
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explicit G4PenelopeCrossSection(size_t nOfEnergyPoints,size_t nOfShells=0);
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//
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~G4PenelopeCrossSection();
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//! Returns total cross section at the given energy
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G4double GetTotalCrossSection(G4double energy) const;
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//! Returns hard cross section at the given energy
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G4double GetHardCrossSection(G4double energy) const;
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//! Returns the total stopping power due to soft collisions
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G4double GetSoftStoppingPower(G4double energy) const;
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//! Returns the hard cross section for the given shell (per molecule)
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G4double GetShellCrossSection(size_t shellID,G4double energy) const;
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//! Returns the hard cross section for the given shell (normalized to 1)
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G4double GetNormalizedShellCrossSection(size_t shellID,G4double energy) const;
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size_t GetNumberOfShells() const {return fNumberOfShells;};
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//!
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//! Public interface for the master thread
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//!
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void AddCrossSectionPoint(size_t binNumber,
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G4double energy,G4double XH0, G4double XH1,
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G4double XH2,
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G4double XS0, G4double XS1, G4double XS2);
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void AddShellCrossSectionPoint(size_t binNumber,
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size_t shellID,G4double energy,G4double xs);
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void NormalizeShellCrossSections();
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G4PenelopeCrossSection & operator=(const G4PenelopeCrossSection &right) = delete;
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G4PenelopeCrossSection(const G4PenelopeCrossSection&) = delete;
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private:
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//all tables are log. XS vs. log E
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//XS0, XS1, XS2 in Penelope nomenclature
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G4PhysicsTable* fSoftCrossSections;
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//XH0, XH1, XH2 in Penelope nomenclature
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G4PhysicsTable* fHardCrossSections;
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//XS for individual shells
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G4PhysicsTable* fShellCrossSections;
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G4PhysicsTable* fShellNormalizedCrossSections;
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size_t fNumberOfEnergyPoints;
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size_t fNumberOfShells;
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G4bool fIsNormalized;
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};
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#endif
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