6. Depletion Results File Format

The current version of the depletion results file format is 1.2.

/

Attributes:

  • filetype (char[]) – String indicating the type of file.

  • version (int[2]) – Major and minor version of the statepoint file format.

Datasets:

  • eigenvalues (double[][2]) – k-eigenvalues at each timestep. This array has shape (number of timesteps, 2). The second axis contains the eigenvalue and its associated uncertainty.

  • number (double[][][]) – Total number of atoms at each timestep. This array has shape (number of timesteps, number of materials, number of nuclides).

  • reaction rates (double[][][][]) – Reaction rates at each timestep. This array has shape (number of timesteps, number of materials, number of nuclides, number of reactions). Only stored if write_rates=True.

  • time (double[][2]) – Time in [s] at beginning/end of each step.

  • source_rate (double[]) – Power in [W] or source rate in [neutron/sec] for each timestep.

  • depletion time (double[]) – Average process time in [s] spent depleting a material across all burnable materials and, if applicable, MPI processes.

/materials/<id>/

Attributes:

  • index (int) – Index used in results for this material

  • volume (double) – Volume of this material in [cm^3]

/nuclides/<name>/

Attributes:

  • atom number index (int) – Index in array of total atoms for this nuclide

  • reaction rate index (int) – Index in array of reaction rates for this nuclide

/reactions/<name>/

Attributes:

  • index (int) – Index user in results for this reaction