diff --git a/docs/source/methods/cross_sections.rst b/docs/source/methods/cross_sections.rst index bb72a9c75..7fc076f6d 100644 --- a/docs/source/methods/cross_sections.rst +++ b/docs/source/methods/cross_sections.rst @@ -72,13 +72,13 @@ Multi-Group Data The data governing the interaction of particles with various nuclei or materials are represented using a multi-group library format specific to the OpenMC code. -The format is described in the MGXS library specification_ -The data itself can be prepared via multiple paths including: generation via -NJOY_ and TRANSX_, or directly from a continuous-energy OpenMC calculation by -use of the Python API as is shown in the Python API example_ notebooks. This -multi-group library consists of library meta-data (such as the energy group -structure) and multiple `xsdata` objects which contains the required microscopic -or macroscopic multi-group data. +The format is described in the :ref:`mgxs_lib_spec`. +The data itself can be prepared via traditional paths or directly from a +continuous-energy OpenMC calculation by use of the Python API as is shown in the +Python API :ref:`_notebook_mgxs_part_iv` example notebook. This multi-group +library consists of library meta-data (such as the energy group structure) and +multiple `xsdata` objects which contains the required microscopic or macroscopic +multi-group data. At a minimum, the library must contain the absorption cross section (:math:`\sigma_{a,g}`) and a scattering matrix. If the problem is an eigenvalue @@ -98,7 +98,7 @@ however, can be expressed either via Legendre expansion of the particle's change-in-angle (:math:`\mu`), a tabular representation of the probability of a particle experiencing a given :math:`\mu`, or a histogram representation of the probability of a particle experiencing a given :math:`\mu`. The formats used to -represent these are described in the library format specification_. +represent these are described in the :ref:`mgxs_lib_spec`. Unlike the continuous-energy mode, the multi-group mode does not explicitly track particles produced from scattering multiplication (i.e., :math:`(n,xn)`) @@ -170,6 +170,3 @@ or even isotropic scattering. .. _NJOY: http://t2.lanl.gov/codes.shtml .. _ENDF/B data: http://www.nndc.bnl.gov/endf .. _Leppanen: http://dx.doi.org/10.1016/j.anucene.2009.03.019 -.. _specification: ENTER LINK -.. _TRANSX: ENTER LINK -.. _example: ENTER LINK diff --git a/docs/source/methods/physics.rst b/docs/source/methods/physics.rst index 7edd656d6..3a243f7e8 100644 --- a/docs/source/methods/physics.rst +++ b/docs/source/methods/physics.rst @@ -245,7 +245,7 @@ chosen to be between 0 and the maximum value of :math:`f(\mu)` in the domain of -1 to 1. If the angular data is instead provided as a tabular representation, then the -value of :math:`\mu` is selected as described in the later angle-tabular_ +value of :math:`\mu` is selected as described in the :ref:`angle-tabular` section with a linear-linear interpolation scheme. If the angular data is provided as a histogram representation, then diff --git a/docs/source/usersguide/mgxs_library.rst b/docs/source/usersguide/mgxs_library.rst index 11ccae43d..5284e4946 100644 --- a/docs/source/usersguide/mgxs_library.rst +++ b/docs/source/usersguide/mgxs_library.rst @@ -22,9 +22,11 @@ materials. .. _XML: http://www.w3.org/XML/ --------------------------------------- -MGXS Library Specification -- mgxs.xml --------------------------------------- +.. _mgxs_lib_spec: + +-------------------------- +MGXS Library Specification +-------------------------- The multi-group library meta-data is contained within the groups_, group_structure_, and inverse_velocities_ elements.