This repository is for the Fast Reactor Input Deck Generator (FRIDGe)
To create materials in FRIDGe, the corresponding elements must be present in the directory fridge/data/CotN.
Each element needs is own YAML file and contains seven variables for inputting data; where each variable and its associate input can be seen in Table 1.
Table 1. Variables for Element YAML file.
| Variable Name | Variable Type | Unit | Example |
|---|---|---|---|
| Name | str | – | Silicon |
| ZAID | int | – | 14000 |
| Isotopes | list of ints | – | [14028, 14029, 14030] |
| Abundance | list of floats | wt % | [0.92223, 0.04685, 0.0392] |
| Mass | list of floats | amu | [27.976926, 28.976494, 29.973777] |
| Density | float | g/cc | 2.33 |
| Linear Coefficient of Expansion | float | K-1 | 2.432e-6 |
Name is a string containing the name of the element.
ZAID is an integer denoted by 1000 * Z (proton or atomic number).
Isotopes is a list of ZAID’s where each isotope in the element is denoted by 1000 * Z + N.
Where N is the mass number (protons + neutrons) of the isotope, and Z is the atomic number.
Abundance is a list of the natural abundances for the isotopes (this is in atom percent and can be found in any Chart of the Nuclide).
Note: for elements with no natural abundances an entry of zero is allowed.
The weight percent can be set later in the material card.
Mass is a list of nuclide masses for each isotope listed and is given in amu’s.
All abundances and masses were obtained using IAEA’s Live Chart of Nuclides [1].
Density is the density of the natural isotope in g/cc.
Linear Coefficient of Expansion is the coefficient of thermal expansion in K-1.
[1] “Livechart - Table of Nuclides - Nuclear structure and decay data”, www-nds.iaea.org, 2019. Available: https://www-nds.iaea.org/relnsd/vcharthtml/VChartHTML.html.