3. Nuclear Data File Formats¶
3.1. Incident Neutron Data¶
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/<nuclide name>/
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/<nuclide name>/kTs/
<TTT>K is the temperature in Kelvin, rounded to the nearest integer, of the temperature-dependent data set. For example, the data set corresponding to 300 Kelvin would be located at 300K.
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/<nuclide name>/reactions/reaction_<mt>/
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/<nuclide name>/reactions/reaction_<mt>/<TTT>K/
<TTT>K is the temperature in Kelvin, rounded to the nearest integer, of the temperature-dependent data set. For example, the data set corresponding to 300 Kelvin would be located at 300K.
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/<nuclide name>/reactions/reaction_<mt>/product_<j>/
Reaction product data is described in Reaction Products.
/<nuclide name>/urr/<TTT>K/
<TTT>K is the temperature in Kelvin, rounded to the nearest integer, of the temperature-dependent data set. For example, the data set corresponding to 300 Kelvin would be located at 300K.
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/<nuclide name>/total_nu/
This special product is used to define the total number of neutrons produced from fission. It is formatted as a reaction product, described in Reaction Products.
/<nuclide name>/fission_energy_release/
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3.2. Incident Photon Data¶
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/<element>/
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/<element>/bremsstrahlung/
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/<element>/coherent/
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/<element>/compton_profiles/
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/<element>/heating/
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/<element>/incoherent/
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/<element>/pair_production_electron/
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/<element>/pair_production_nuclear/
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/<element>/photoelectric/
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/<element>/subshells/
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/<element>/subshells/<designator>/
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3.3. Thermal Neutron Scattering Data¶
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/<thermal name>/
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/<thermal name>/kTs/
<TTT>K is the temperature in Kelvin, rounded to the nearest integer, of the temperature-dependent data set. For example, the data set corresponding to 300 Kelvin would be located at 300K.
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/<thermal name>/elastic/<TTT>K/
<TTT>K is the temperature in Kelvin, rounded to the nearest integer, of the temperature-dependent data set. For example, the data set corresponding to 300 Kelvin would be located at 300K.
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/<thermal name>/inelastic/<TTT>K/
<TTT>K is the temperature in Kelvin, rounded to the nearest integer, of the temperature-dependent data set. For example, the data set corresponding to 300 Kelvin would be located at 300K.
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3.4. Reaction Products¶
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3.5. One-dimensional Functions¶
3.5.1. Scalar¶
Object type: | Dataset |
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Datatype: | double |
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3.5.2. Tabulated¶
Object type: | Dataset |
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Datatype: | double[2][] |
Description: | x-values are listed first followed by corresponding y-values |
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3.5.3. Polynomial¶
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Datatype: | double[] |
Description: | Polynomial coefficients listed in order of increasing power |
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3.5.4. Coherent elastic scattering¶
Object type: | Dataset |
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Datatype: | double[2][] |
Description: | The first row lists Bragg edges and the second row lists structure factor cumulative sums. |
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3.5.5. Incoherent elastic scattering¶
Object type: | Dataset |
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Datatype: | double[2] |
Description: | The first value is the characteristic bound cross section in [b] and the second value is the Debye-Waller integral in [eV\(^{-1}\)]. |
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3.6. Angle-Energy Distributions¶
3.6.3. Kalbach-Mann¶
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3.6.4. N-Body Phase Space¶
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3.6.5. Coherent Elastic¶
This angle-energy distribution is used specifically for coherent elastic thermal neutron scattering.
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3.6.6. Incoherent Elastic¶
This angle-energy distribution is used specifically for incoherent elastic thermal neutron scattering (derived from an ENDF file directly).
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3.6.7. Incoherent Elastic (Discrete)¶
This angle-energy distribution is used for discretized incoherent elastic thermal neutron scattering distributions that are present in ACE files.
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3.6.8. Incoherent Inelastic¶
This angle-energy distribution is used specifically for (continuous) incoherent inelastic thermal neutron scattering.
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Datasets: | The datasets for this angle-energy distribution are the same as for correlated angle-energy distributions. |
3.6.9. Incoherent Inelastic (Discrete)¶
This angle-energy distribution is used specifically for incoherent inelastic thermal neutron scattering where the distributions have been discretized into equiprobable bins.
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3.7. Energy Distributions¶
3.7.1. Maxwell¶
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3.7.2. Evaporation¶
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3.7.3. Watt Fission Spectrum¶
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3.7.4. Madland-Nix¶
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3.7.5. Discrete Photon¶
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3.7.6. Level Inelastic¶
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3.7.7. Continuous Tabular¶
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