openmc.TallyDerivative¶
- class openmc.TallyDerivative(derivative_id=None, variable=None, material=None, nuclide=None)[source]¶
A material perturbation derivative to apply to a tally.
- Parameters
derivative_id (int, optional) – Unique identifier for the tally derivative. If none is specified, an identifier will automatically be assigned
variable (str, optional) – Accepted values are ‘density’, ‘nuclide_density’, and ‘temperature’
material (int, optional) – The perturbed material ID
nuclide (str, optional) – The perturbed nuclide. Only needed for ‘nuclide_density’ derivatives. Ex: ‘Xe135’
- Variables