celeritas::NucleonNucleonXsCalculator Class Reference

Calculate nucleon-nucleon (NN) cross sections from NeutronInelasticData. More...

#include <NucleonNucleonXsCalculator.hh>

Public Types
Type aliases
using	ParamsRef = NeutronInelasticRef
using	Energy = units::MevEnergy
using	BarnXs = units::BarnXs

Public Member Functions
CELER_FUNCTION	NucleonNucleonXsCalculator (ParamsRef const &shared)
	Construct with shared and state data.
CELER_FUNCTION BarnXs	operator() (ChannelId el_id, Energy energy) const
	Compute nucleon-nucleon (NN) cross section.

Static Public Member Functions
static CELER_CONSTEXPR_FUNCTION Energy	high_otf_energy ()
static CELER_CONSTEXPR_FUNCTION Energy	low_otf_energy ()

Detailed Description

Calculate nucleon-nucleon (NN) cross sections from NeutronInelasticData.

Member Function Documentation

operator()()

CELER_FUNCTION auto celeritas::NucleonNucleonXsCalculator::operator() ( ChannelId  ch_id, Energy  energy  ) const

inline

Compute nucleon-nucleon (NN) cross section.

The parameterization of nucleon-nucleon cross sections below 10 MeV takes the following functional form,

\[ SF(E) = coeffs[0] + coeffs[1]/E + coeffs[2]/E^{2} \]

where the kinetic energy of the incident nucleon, E is in [1, 10] MeV. Below 1 MeV, \( SF(E) = slope/E \) down to \( E = slope/xs_zero \) while \( SF(E) = xs_zero \) if E is in [0, slope/xs_zero] MeV.

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

• NucleonNucleonXsCalculator.hh