Merge pull request #1079 from paulromano/doc-remove-458

Remove doc references to compact fission energy release library
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Adam Nelson 2018-09-28 15:14:36 -04:00 committed by GitHub
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@ -1,53 +0,0 @@
.. _usersguide_fission_energy:
==================================
Fission Energy Release File Format
==================================
This file is a compact HDF5 representation of the ENDF MT=1, MF=458 data (see
ENDF-102_ for details). It gives the information needed to compute the energy
carried away from fission reactions by each reaction product (e.g. fragment
nuclei, neutrons) which depends on the incident neutron energy. OpenMC is
distributed with one of these files under
data/fission_Q_data_endfb71.h5. More files of this format can be created from
ENDF files with the
``openmc.data.write_compact_458_library`` function. They can be read with the
``openmc.data.FissionEnergyRelease.from_compact_hdf5`` class method.
:Attributes: - **comment** (*char[]*) -- An optional text comment
- **component order** (*char[][]*) -- An array of strings
specifying the order each reaction product occurs in the data
arrays. The components use the 2-3 letter abbreviations
specified in ENDF-102 e.g. EFR for fission fragments and ENP for
prompt neutrons.
**/<nuclide name>/**
Nuclides are named by concatenating their atomic symbol and mass number. For
example, 'U235' or 'Pu239'. Metastable nuclides are appended with an
'_m' and their metastable number. For example, 'Am242_m1'
:Datasets:
- **data** (*double[][][]*) -- The energy release coefficients. The
first axis indexes the component type. The second axis specifies
values or uncertainties. The third axis indexes the polynomial
order. If the data uses the Sher-Beck format, then the last axis
will have a length of one and ENDF-102 should be consulted for
energy dependence. Otherwise, the data uses the Madland format
which is a polynomial of incident energy.
For example, if 'EFR' is given first in the **component order**
attribute and the data uses the Madland format, then the energy
released in the form of fission fragments at an incident energy
:math:`E` is given by
.. math::
\text{data}[0, 0, 0] + \text{data}[0, 0, 1] \cdot E
+ \text{data}[0, 0, 2] \cdot E^2 + \ldots
And its uncertainty is
.. math::
\text{data}[0, 1, 0] + \text{data}[0, 1, 1] \cdot E
+ \text{data}[0, 1, 2] \cdot E^2 + \ldots
.. _ENDF-102: http://www.nndc.bnl.gov/endfdocs/ENDF-102-2012.pdf

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@ -34,7 +34,6 @@ Data Files
nuclear_data
mgxs_library
data_wmp
fission_energy
------------
Output Files

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@ -39,7 +39,6 @@ Core Functions
openmc.data.linearize
openmc.data.thin
openmc.data.water_density
openmc.data.write_compact_458_library
openmc.data.zam
Angle-Energy Distributions

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@ -43,10 +43,6 @@ class FissionEnergyRelease(EqualityMixin):
dataset. The :meth:`FissionEnergyRelease.from_hdf5` method builds this
class from the usual OpenMC HDF5 data files.
:meth:`FissionEnergyRelease.from_endf` uses ENDF-formatted data.
:meth:`FissionEnergyRelease.from_compact_hdf5` uses a different HDF5 format
that is meant to be compact and store the exact same data as the ENDF
format. Files with this format can be generated with the
:func:`openmc.data.write_compact_458_library` function.
References
----------