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File indexing completed on 2025-09-18 09:08:57
0001 //------------------------------- -*- C++ -*- -------------------------------// 0002 // Copyright Celeritas contributors: see top-level COPYRIGHT file for details 0003 // SPDX-License-Identifier: (Apache-2.0 OR MIT) 0004 //---------------------------------------------------------------------------// 0005 //! \file celeritas/em/distribution/EnergyLossDeltaDistribution.hh 0006 //---------------------------------------------------------------------------// 0007 #pragma once 0008 0009 #include "celeritas/Quantities.hh" 0010 0011 #include "EnergyLossHelper.hh" 0012 0013 namespace celeritas 0014 { 0015 //---------------------------------------------------------------------------// 0016 /*! 0017 * Passthrough model for "no distribution" energy loss. 0018 * 0019 * The distribution is a Delta function so that the "sampled" value is always 0020 * the mean energy. 0021 */ 0022 class EnergyLossDeltaDistribution 0023 { 0024 public: 0025 //!@{ 0026 //! \name Type aliases 0027 using Energy = units::MevEnergy; 0028 //!@} 0029 0030 public: 0031 //! Construct from helper-calculated mean 0032 explicit CELER_FUNCTION 0033 EnergyLossDeltaDistribution(EnergyLossHelper const& helper) 0034 : mean_energy_(helper.mean_loss()) 0035 { 0036 } 0037 0038 //! Result is always the mean energy 0039 template<class Generator> 0040 CELER_FUNCTION Energy operator()(Generator&) const 0041 { 0042 return mean_energy_; 0043 } 0044 0045 private: 0046 Energy mean_energy_; 0047 }; 0048 0049 //---------------------------------------------------------------------------// 0050 } // namespace celeritas
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