INukeOset Class Reference

#include <INukeOset.h>

Inheritance diagram for INukeOset:

Public Member Functions
	INukeOset ()
	contructor
virtual void	setupOset (const double &density, const double &pionTk, const int &pionPDG, const double &protonFraction)=0
	use to set up Oset class (assign pion Tk, nuclear density etc)
double	getTotalCrossSection () const
	return total = (qel+cex+abs) cross section
double	getCexCrossSection () const
	return cex cross section
double	getAbsorptionCrossSection () const
	return absorption cross section
double	getCexFraction () const
	return fraction of cex events
double	getAbsorptionFraction () const
	return fraction of absorption events

Protected Member Functions
virtual void	setCrossSections ()=0
	calculalte cross sections for each channel
void	setCrossSections (const int &pionPDG, const double &protonFraction)
	calculate avg cross sections according to proton / neutron fraction

Protected Attributes
double	fNuclearDensity
	nuclear density in fm-3
double	fPionKineticEnergy
	pion kinetic energy in MeV
double	fTotalCrossSection
	el+cex+abs cross section (averaged over proton / neutron fraction)
double	fCexCrossSection
	cex cross section (averaged over proton / neutron fraction)
double	fAbsorptionCrossSection
	absorption cross section (averaged over proton / neutron fraction)
double	fQelCrossSections [fNChannels]
	total qel (el+cex) cross section for each channel
double	fCexCrossSections [fNChannels]
	cex cross section for each channel

Static Protected Attributes
static const unsigned int	fNChannels = 3
	number of possible channels: pi+n, pi+p, pi0

Detailed Description

Definition at line 24 of file INukeOset.h.

Constructor & Destructor Documentation

INukeOset()

INukeOset::INukeOset

(

)

contructor

set up initial density and enegry values; set up pointer to current instance

Definition at line 8 of file INukeOset.cxx.

                        : fNuclearDensity (-1.0), fPionKineticEnergy (-1.0)
{
  osetUtils::currentInstance = this;
}

References osetUtils::currentInstance, fNuclearDensity, and fPionKineticEnergy.

Member Function Documentation

getAbsorptionCrossSection()

double INukeOset::getAbsorptionCrossSection ( ) const

inline

return absorption cross section

Definition at line 47 of file INukeOset.h.

  {
    return fAbsorptionCrossSection;
  }

References fAbsorptionCrossSection.

getAbsorptionFraction()

double INukeOset::getAbsorptionFraction ( ) const

inline

return fraction of absorption events

Definition at line 59 of file INukeOset.h.

  {
    return fAbsorptionCrossSection / fTotalCrossSection;
  }

References fAbsorptionCrossSection, and fTotalCrossSection.

getCexCrossSection()

double INukeOset::getCexCrossSection ( ) const

inline

return cex cross section

Definition at line 41 of file INukeOset.h.

  {
    return fCexCrossSection;
  }

References fCexCrossSection.

getCexFraction()

double INukeOset::getCexFraction ( ) const

inline

return fraction of cex events

Definition at line 53 of file INukeOset.h.

  {
    return fCexCrossSection / fTotalCrossSection;
  }

References fCexCrossSection, and fTotalCrossSection.

getTotalCrossSection()

double INukeOset::getTotalCrossSection ( ) const

inline

return total = (qel+cex+abs) cross section

Definition at line 35 of file INukeOset.h.

  {
    return fTotalCrossSection;
  }

References fTotalCrossSection.

Referenced by genie::utils::intranuke2018::sigmaTotalOset(), and genie::utils::intranuke2025::sigmaTotalOset().

setCrossSections() [1/2]

virtual void INukeOset::setCrossSections ( )

protectedpure virtual

calculalte cross sections for each channel

Implemented in INukeOsetFormula, and INukeOsetTable.

Referenced by INukeOsetFormula::setupOset(), and INukeOsetTable::setupOset().

setCrossSections() [2/2]

void INukeOset::setCrossSections ( const int & pionPDG, const double & protonFraction )

protected

calculate avg cross sections according to proton / neutron fraction

Definition at line 13 of file INukeOset.cxx.

{  
  if (pionPDG == kPdgPi0)
  {
      fCexCrossSection = fCexCrossSections[2];
    fTotalCrossSection = fQelCrossSections[2] + fAbsorptionCrossSection;
  }
  else
  {
    // set channel for pi on proton and pi on neutron
    const int channelIndexOnProton  = (pionPDG == kPdgPiP); // 0 = pi-, 1 = pi+
    const int channelIndexOnNeutron = (pionPDG == kPdgPiM); // 0 = pi+, 1 = pi-
 
    // total xsec = (Z * xsec_proton + (A-Z) * xsec_neutron) / A
    fCexCrossSection = protonFraction * fCexCrossSections[channelIndexOnProton] +
                       (1.0 - protonFraction) * fCexCrossSections[channelIndexOnNeutron];
 
    fTotalCrossSection = protonFraction * fQelCrossSections[channelIndexOnProton] +
                        (1.0 - protonFraction) * fQelCrossSections[channelIndexOnNeutron] + fAbsorptionCrossSection;
  }
}  

References fAbsorptionCrossSection, fCexCrossSection, fCexCrossSections, fQelCrossSections, fTotalCrossSection, genie::kPdgPi0, genie::kPdgPiM, and genie::kPdgPiP.

setupOset()

virtual void INukeOset::setupOset ( const double & density, const double & pionTk, const int & pionPDG, const double & protonFraction )

pure virtual

use to set up Oset class (assign pion Tk, nuclear density etc)

Implemented in INukeOsetFormula, and INukeOsetTable.

Referenced by genie::utils::intranuke2018::sigmaTotalOset(), and genie::utils::intranuke2025::sigmaTotalOset().

Member Data Documentation

fAbsorptionCrossSection

double INukeOset::fAbsorptionCrossSection

protected

absorption cross section (averaged over proton / neutron fraction)

Definition at line 74 of file INukeOset.h.

Referenced by getAbsorptionCrossSection(), getAbsorptionFraction(), setCrossSections(), INukeOsetFormula::setCrossSections(), and INukeOsetTable::setCrossSections().

fCexCrossSection

double INukeOset::fCexCrossSection

protected

cex cross section (averaged over proton / neutron fraction)

Definition at line 72 of file INukeOset.h.

Referenced by getCexCrossSection(), getCexFraction(), and setCrossSections().

fCexCrossSections

double INukeOset::fCexCrossSections[fNChannels]

protected

cex cross section for each channel

Definition at line 85 of file INukeOset.h.

Referenced by setCrossSections(), INukeOsetFormula::setCrossSections(), and INukeOsetTable::setCrossSections().

fNChannels

const unsigned int INukeOset::fNChannels = 3

staticprotected

number of possible channels: pi+n, pi+p, pi0

if (pi0) channel = 2
else channel = [(10 * pip + pim) == (10 * p + n)]

0 -> pi+n or pi-p, 1 -> pi+p or pi-n, 2 -> pi0

Definition at line 81 of file INukeOset.h.

Referenced by INukeOsetTable::processLine(), INukeOsetFormula::setCrossSections(), and INukeOsetTable::setCrossSections().

fNuclearDensity

double INukeOset::fNuclearDensity

protected

nuclear density in fm-3

Definition at line 66 of file INukeOset.h.

Referenced by INukeOsetTable::checkIntegrity(), INukeOset(), INukeOsetFormula::setCrossSections(), INukeOsetFormula::setNucleus(), INukeOsetFormula::setSelfEnergy(), and INukeOsetTable::setupOset().

fPionKineticEnergy

double INukeOset::fPionKineticEnergy

protected

pion kinetic energy in MeV

Definition at line 67 of file INukeOset.h.

Referenced by INukeOsetTable::checkIntegrity(), INukeOset(), INukeOsetFormula::setKinematics(), INukeOsetFormula::setSelfEnergy(), and INukeOsetTable::setupOset().

fQelCrossSections

double INukeOset::fQelCrossSections[fNChannels]

protected

total qel (el+cex) cross section for each channel

Definition at line 84 of file INukeOset.h.

Referenced by setCrossSections(), INukeOsetFormula::setCrossSections(), and INukeOsetTable::setCrossSections().

fTotalCrossSection

double INukeOset::fTotalCrossSection

protected

el+cex+abs cross section (averaged over proton / neutron fraction)

Definition at line 70 of file INukeOset.h.

Referenced by getAbsorptionFraction(), getCexFraction(), getTotalCrossSection(), and setCrossSections().

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The documentation for this class was generated from the following files:

• INukeOset.h
• INukeOset.cxx