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Merge pull request #1599 from paulromano/energy-dep-fixes
Two fixes for energy deposition calculations
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commit
557385c2bf
14 changed files with 173 additions and 93 deletions
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@ -12,19 +12,18 @@ is deposited for a specific reaction is referred to as
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"heating numbers" and can be computed using a program like NJOY with the
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``heatr`` module.
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These heating rate is the product of reaction-specific coefficients and
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a reaction cross section
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The heating rate is the product of reaction-specific coefficients and a reaction
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cross section
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.. math::
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H(E) = \phi(E)\sum_i\rho_i\sum_rk_{i, r}(E),
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and has units energy per time, typically eV / s.
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Here, :math:`k_{i, r}` are the KERMA (Kinetic Energy Release in Materials)
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[Mack97]_ coefficients for reaction :math:`r` of isotope :math:`i`.
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The KERMA coefficients have units energy :math:`\times` cross-section, e.g.
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eV-barn, and can be used much like a reaction cross section for the purpose
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of tallying energy deposition.
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and has units energy per time, typically eV/s. Here, :math:`k_{i, r}` are the
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KERMA (Kinetic Energy Release in Materials) [Mack97]_ coefficients for reaction
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:math:`r` of isotope :math:`i`. The KERMA coefficients have units of energy
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:math:`\times` cross-section (e.g., eV-barn) and can be used much like a reaction
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cross section for the purpose of tallying energy deposition.
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KERMA coefficients can be computed using the energy-balance method with
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a nuclear data processing code like NJOY, which performs the following
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@ -56,11 +55,11 @@ broken up into the following categories:
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- :math:`E_{\beta}` - energy of released :math:`\beta` particles
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- :math:`E_{\nu}` - energy of neutrinos
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These components are defined in MF=1,MT=458 data in a standard ENDF/B-6 formatted
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file. All these quantities may depend upon incident neutron energy,
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but this dependence is not shown to make the following demonstrations cleaner.
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As neutrinos scarcely interact with matter, the recoverable energy from
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fission is defined as
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These components are defined in MF=1, MT=458 data in a standard ENDF-6 formatted
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file. All these quantities may depend upon incident neutron energy, but this
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dependence is not shown to make the following demonstrations cleaner. As
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neutrinos scarcely interact with matter, the recoverable energy from fission is
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defined as
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.. math::
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@ -149,6 +149,16 @@ Geometry and Visualization
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Miscellaneous
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-------------
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- Shikhar Kumar, Benoit Forget, and Kord Smith, "`Stationarity Diagnostic using
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Functional Expansion Tallies
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<https://doi.org/10.1016/j.anucene.2020.107388>`_", *Ann. Nucl. Energy*,
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**143**, 107388 (2020).
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- T. Eade, B. Colling, J. Naish, L. W. Packer, and A. Valentine, "`Shutdown dose
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rate benchmarking using modern particle transport codes
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<https://doi.org/10.1088/1741-4326/ab8181>`_, *Nucl. Fusion*, **60**, 056024
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(2020).
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- Jiankai Yu, Qiudong Wang, Ding She, and Benoit Forget, "Modelling of the
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HTR-PM Pebble-bed Reactor using OpenMC", *Trans. Am. Nucl. Soc.*, **122**,
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643-646 (2020).
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