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/* Copyright 2019 Luca Fedeli
*
* This file is part of WarpX.
*
* License: BSD-3-Clause-LBNL
*/
#ifndef WARPX_amrex_qed_chi_functions_h_
#define WARPX_amrex_qed_chi_functions_h_
/**
* This header contains wrappers around functions provided by
* the PICSAR QED library to calculate the 'chi' parameter
* for photons or electrons and positrons.
*/
#include "QedWrapperCommons.H"
//#define PXRMP_CORE_ONLY allows importing only the 'core functions' of the
//QED library.
#define PXRMP_CORE_ONLY
#include <chi_functions.hpp>
namespace QedUtils{
/**
* Function to calculate the 'chi' parameter for photons.
* Suitable for GPU kernels.
* @param[in] px,py,pz components of momentum (SI units)
* @param[in] ex,ey,ez components of electric field (SI units)
* @param[in] bx,by,bz components of magnetic field (SI units)
* @return chi parameter
*/
AMREX_GPU_DEVICE
AMREX_FORCE_INLINE
amrex::Real chi_photon(
amrex::Real px, amrex::Real py, amrex::Real pz,
amrex::Real ex, amrex::Real ey, amrex::Real ez,
amrex::Real bx, amrex::Real by, amrex::Real bz)
{
//laser wavelength is unused if SI units are set
const amrex::Real dummy_lambda = 1.0;
return picsar::multi_physics::chi_photon(
px, py, pz, ex, ey, ez, bx, by, bz, dummy_lambda);
}
/**
* Function to calculate the 'chi' parameter for electrons or positrons.
* Suitable for GPU kernels.
* @param[in] px,py,pz components of momentum (SI units)
* @param[in] ex,ey,ez components of electric field (SI units)
* @param[in] bx,by,bz components of magnetic field (SI units)
* @return chi parameter
*/
AMREX_GPU_DEVICE
AMREX_FORCE_INLINE
amrex::Real chi_lepton(
amrex::Real px, amrex::Real py, amrex::Real pz,
amrex::Real ex, amrex::Real ey, amrex::Real ez,
amrex::Real bx, amrex::Real by, amrex::Real bz)
{
//laser wavelength is unused if SI units are set
const amrex::Real dummy_lambda = 1.0;
return picsar::multi_physics::chi_lepton(
px, py, pz, ex, ey, ez, bx, by, bz, dummy_lambda);
}
//_________
};
#endif //WARPX_amrex_qed_chi_functions_h_
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