Heed::HydrogenPhotoAbsCS Class Reference

#include <PhotoAbsCS.h>

Inheritance diagram for Heed::HydrogenPhotoAbsCS:

Public Member Functions
	HydrogenPhotoAbsCS ()
	Constructor.
virtual	~HydrogenPhotoAbsCS ()
	Destructor.
virtual double	get_CS (double energy) const
	Retrieve cross-section [Mb] at a given energy [MeV].
virtual double	get_integral_CS (double energy1, double energy2) const
	Retrieve integral cross-section [Mb * MeV] in a given interval [MeV].
virtual void	scale (double fact)
	Multiply by some factor. Can be useful for debugging and other purposes.
virtual void	print (std::ostream &file, int l) const
virtual HydrogenPhotoAbsCS *	copy () const
Public Member Functions inherited from Heed::PhotoAbsCS
	PhotoAbsCS ()
	Default constructor.
	PhotoAbsCS (const std::string &fname, int fZ, double fthreshold)
	Constructor.
virtual	~PhotoAbsCS ()
	Destructor.
const std::string &	get_name () const
	Name of this shell or atom.
int	get_number () const
	Number of this shell.
int	get_Z () const
double	get_threshold () const
	Return the threshold energy.
virtual double	get_CS (double energy) const =0
	Retrieve cross-section [Mb] at a given energy [MeV].
virtual double	get_integral_CS (double energy1, double energy2) const =0
	Retrieve integral cross-section [Mb * MeV] in a given interval [MeV].
virtual void	scale (double fact)=0
	Multiply by some factor. Can be useful for debugging and other purposes.
virtual void	print (std::ostream &file, int l) const
virtual PhotoAbsCS *	copy () const =0

Additional Inherited Members
Protected Attributes inherited from Heed::PhotoAbsCS
std::string	name
int	number
int	Z
double	threshold

Detailed Description

Hydrogen: empirical fit of Kosarev & Podoliak. Original formula for molecular hydrogen. Since this class for separated shell, we divide the molecular CS by two.

Definition at line 123 of file PhotoAbsCS.h.

Constructor & Destructor Documentation

HydrogenPhotoAbsCS()

Heed::HydrogenPhotoAbsCS::HydrogenPhotoAbsCS

(

)

Constructor.

Definition at line 160 of file PhotoAbsCS.cpp.

    : PhotoAbsCS("H", 1, 15.43e-6), prefactor(1.) {
  number = 1;
}

Referenced by copy().

~HydrogenPhotoAbsCS()

virtual Heed::HydrogenPhotoAbsCS::~HydrogenPhotoAbsCS ( )

inlinevirtual

Destructor.

Definition at line 128 of file PhotoAbsCS.h.

{}

Member Function Documentation

copy()

virtual HydrogenPhotoAbsCS * Heed::HydrogenPhotoAbsCS::copy ( ) const

inlinevirtual

Implements Heed::PhotoAbsCS.

Definition at line 134 of file PhotoAbsCS.h.

                                           {
    return new HydrogenPhotoAbsCS(*this);
  }

get_CS()

double Heed::HydrogenPhotoAbsCS::get_CS ( double  energy ) const

virtual

Retrieve cross-section [Mb] at a given energy [MeV].

Implements Heed::PhotoAbsCS.

Definition at line 165 of file PhotoAbsCS.cpp.

                                                     {
  if (energy < threshold || energy == DBL_MAX) return 0.0;
  // The factor 0.5 is needed because we have one atom instead of two.
  return 0.5 * prefactor * 0.0535 * (pow(100.0e-6 / energy, 3.228));
}

get_integral_CS()

double Heed::HydrogenPhotoAbsCS::get_integral_CS ( double  energy1, double  energy2  ) const

virtual

Retrieve integral cross-section [Mb * MeV] in a given interval [MeV].

Implements Heed::PhotoAbsCS.

Definition at line 171 of file PhotoAbsCS.cpp.

                                                                 {
  if (energy2 < threshold) return 0.;
  if (energy1 < threshold) energy1 = threshold;
  if (energy2 == DBL_MAX) {
    return 0.5 * prefactor * 0.0535 * pow(100.0e-6, 3.228) / 2.228 *
           (1.0 / pow(energy1, 2.228));
  } else {
    return 0.5 * prefactor * 0.0535 * pow(100.0e-6, 3.228) / 2.228 *
           (1.0 / pow(energy1, 2.228) - 1.0 / pow(energy2, 2.228));
  }
}

print()

void Heed::HydrogenPhotoAbsCS::print ( std::ostream &  file, int  l  ) const

virtual

Reimplemented from Heed::PhotoAbsCS.

Definition at line 186 of file PhotoAbsCS.cpp.

                                                            {
  if (l <= 0) return;
  Ifile << "HydrogenPhotoAbsCS: name=" << name << " Z = " << Z
        << " threshold = " << threshold << std::endl;
}

scale()

void Heed::HydrogenPhotoAbsCS::scale ( double  fact )

virtual

Multiply by some factor. Can be useful for debugging and other purposes.

Implements Heed::PhotoAbsCS.

Definition at line 184 of file PhotoAbsCS.cpp.

{ prefactor = fact; }

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

• PhotoAbsCS.h
• PhotoAbsCS.cpp