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57 lines
2.1 KiB
C++
57 lines
2.1 KiB
C++
//! \file reaction_product.h
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//! Data for a reaction product
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#ifndef OPENMC_REACTION_PRODUCT_H
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#define OPENMC_REACTION_PRODUCT_H
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#include "hdf5.h"
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#include "openmc/angle_energy.h"
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#include "openmc/endf.h"
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#include "openmc/memory.h" // for unique_ptr
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#include "openmc/particle.h"
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#include "openmc/vector.h" // for vector
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namespace openmc {
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//==============================================================================
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//! Data for a reaction product including its yield and angle-energy
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//! distributions, each of which has a given probability of occurring for a
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//! given incoming energy. In general, most products only have one angle-energy
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//! distribution, but for some cases (e.g., (n,2n) in certain nuclides) multiple
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//! distinct distributions exist.
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//==============================================================================
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class ReactionProduct {
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public:
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//! Emission mode for product
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enum class EmissionMode {
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prompt, // Prompt emission of secondary particle
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delayed, // Yield represents total emission (prompt + delayed)
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total // Delayed emission of secondary particle
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};
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using Secondary = unique_ptr<AngleEnergy>;
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//! Construct reaction product from HDF5 data
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//! \param[in] group HDF5 group containing data
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explicit ReactionProduct(hid_t group);
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//! Sample an outgoing angle and energy
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//! \param[in] E_in Incoming energy in [eV]
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//! \param[out] E_out Outgoing energy in [eV]
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//! \param[out] mu Outgoing cosine with respect to current direction
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//! \param[inout] seed Pseudorandom seed pointer
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void sample(double E_in, double& E_out, double& mu, uint64_t* seed) const;
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ParticleType particle_; //!< Particle type
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EmissionMode emission_mode_; //!< Emission mode
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double decay_rate_; //!< Decay rate (for delayed neutron precursors) in [1/s]
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unique_ptr<Function1D> yield_; //!< Yield as a function of energy
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vector<Tabulated1D> applicability_; //!< Applicability of distribution
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vector<Secondary> distribution_; //!< Secondary angle-energy distribution
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};
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} // namespace openmc
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#endif // OPENMC_REACTION_PRODUCT_H
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