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This helper performs the following tasks to weight fission yields: 1) Determine a set of "fast" and "thermal" yields based on a user specified cutoff energy, 2) Tally fission rates above and below the cutoff, and 3) Compute the effective yield by weighting the fast and thermal yields by the fraction of fast and thermal fissions for all nuclides in all burnable materials. The user is allowed to specify the cutoff energy and energies preferred for the fast and thermal yields. By default, the cutoff is 112 eV, chosen as it is the logarithmic mean of 0.0253 eV and 500 keV. These two values are the default energies for thermal and fast yields. Tests are added to check for failure in constructing this helper (thermal energy > cutoff, non-real values passed, etc.), selection of yields given a range of user data, and a proxy class that emulates a variety of thermal and fast splits to check the eventual computed yield libraries. |
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| .. | ||
| base.rst | ||
| capi.rst | ||
| data.rst | ||
| deplete.rst | ||
| examples.rst | ||
| index.rst | ||
| mgxs.rst | ||
| model.rst | ||
| openmoc.rst | ||
| stats.rst | ||