Materials

class mcnpy.Material(*args, **kwargs)

Bases: IDManagerMixin, Material

A representation of the model object Material.

Parameters

  • name (int) – Name for Material.

  • nuclides (iterable of mcnpy.Nuclide) – Nuclides for Material.

  • gas (int) – Gas for Material.

  • electron_substep_count (int) – ElectronSubstepCount for Material.

  • heavy_ion_substep_count (int) – HeavyIonSubstepCount for Material.

  • neutron_library (mcnpy.Library) – NeutronLibrary for Material.

  • photoatomic_library (mcnpy.Library) – PhotoatomicLibrary for Material.

  • photonuclear_library (mcnpy.Library) – PhotonuclearLibrary for Material.

  • electron_library (mcnpy.Library) – ElectronLibrary for Material.

  • proton_library (mcnpy.Library) – ProtonLibrary for Material.

  • conductor (float) – Conductor for Material.

  • a (float) – A for Material.

  • b (float) – B for Material.

  • c (float) – C for Material.

  • d (float) – D for Material.

  • b1 (float) – B1 for Material.

  • c1 (float) – C1 for Material.

  • b2 (float) – B2 for Material.

  • c2 (float) – C2 for Material.

  • b3 (float) – B3 for Material.

  • c3 (float) – C3 for Material.

  • comment (str) – Comment for Material.

property density
property density_unit
next_id = 1
property nuclides
property s_alpha_beta
property unit
used_ids = {}
Material Density Operators

Unit

Symbol (Python)

Symbol (MCNP)

$atom/bcdot cm$

@

+

$g/cm^{3}$

*

-
class mcnpy.Nuclide(*args, **kwargs)

Bases: Nuclide

A representation of the model object Nuclide.

Parameters

  • name (int) – Name for Nuclide.

  • library (mcnpy.Library) – Library for Nuclide.

  • unit (mcnpy.FractionUnit) – Unit for Nuclide.

  • fraction (float) – Fraction for Nuclide.

element_name()
property fraction
property library
property name
Material Nuclide Fraction Operators

Operation

Symbol (Python)

Symbol (MCNP)

Atomic Fraction

@

+

Weight Fraction

*

-

Weight Percent

\%

N/A
class mcnpy.Library(*args, **kwargs)

Bases: Library

A representation of the model object Library.

property library
class mcnpy.Sab(*args, **kwargs)

Bases: Sab, MaterialSetting

A representation of the model object Sab.

Parameters
property libraries
property material
class mcnpy.SabLibrary(*args, **kwargs)

Bases: SabLibrary

A representation of the model object SabLibrary.

Parameters
property library
class mcnpy.Sablib(*args, **kwargs)

Bases: Sablib

A representation of the model object Sablib.

Parameters

  • lib (str) – Lib for Sablib.

  • t (str) – T for Sablib.

property lib
class mcnpy.NuclideSubstitution(*args, **kwargs)

Bases: NuclideSubstitution, MaterialSetting

A representation of the model object NuclideSubstitution.

Parameters

  • material (mcnpy.Material) – Material for NuclideSubstitution.

  • nuclides (iterable of str) – Nuclides for NuclideSubstitution.

  • particles (iterable of mcnpy.Particle) – Particles for NuclideSubstitution.

class mcnpy.PhotonuclearNuclideSelection(*args, **kwargs)

Bases: PhotonuclearNuclideSelection, MaterialSetting

A representation of the model object PhotonuclearNuclideSelection.

Parameters

  • material (mcnpy.Material) – Material for PhotonuclearNuclideSelection.

  • zaids (iterable of str) – Zaids for PhotonuclearNuclideSelection.

  • particles (iterable of mcnpy.Particle) – Particles for PhotonuclearNuclideSelection.

class mcnpy.OnTheFlyDopplerBroadening(*args, **kwargs)

Bases: OnTheFlyDopplerBroadening, MaterialSetting

A representation of the model object OnTheFlyDopplerBroadening.

Parameters

zaids (iterable of str) – Zaids for OnTheFlyDopplerBroadening.

class mcnpy.TotalFission(*args, **kwargs)

Bases: TotalFission, MaterialSetting

A representation of the model object TotalFission.

Parameters

prompt_only (mcnpy.Boolean) – PromptOnly for TotalFission.

class mcnpy.FissionTurnoff(*args, **kwargs)

Bases: FissionTurnoff, MaterialSetting

A representation of the model object FissionTurnoff.

Parameters

options (iterable of str) – Options for FissionTurnoff.

class mcnpy.AtomicWeight(*args, **kwargs)

Bases: AtomicWeight, MaterialSetting

A representation of the model object AtomicWeight.

Parameters

  • nuclides (iterable of str) – Nuclides for AtomicWeight.

  • library (iterable of mcnpy.Library) – Library for AtomicWeight.

  • ratios (iterable of float) – Ratios for AtomicWeight.

class mcnpy.CrossSectionFile(*args, **kwargs)

Bases: CrossSectionFile, MaterialSetting

A representation of the model object CrossSectionFile.

Parameters

  • name (int) – Name for CrossSectionFile.

  • nuclides (mcnpy.Nuclide) – Nuclides for CrossSectionFile.

  • x_s_file (str) – XSFile for CrossSectionFile.

  • entries (iterable of float) – Entries for CrossSectionFile.

class mcnpy.Void(*args, **kwargs)

Bases: Void, MaterialSetting

A representation of the model object Void.

Parameters

cells (iterable of mcnpy.Cell) – Cells for Void.

class mcnpy.MultigroupTransport(*args, **kwargs)

Bases: MultigroupTransport, MaterialSetting

A representation of the model object MultigroupTransport.

Parameters

  • mode (mcnpy.MultigroupTransportMode) – Mode for MultigroupTransport.

  • combined_electron_photon_xsecs (str) – CombinedElectronPhotonXsecs for MultigroupTransport.

  • energy_group_count (int) – EnergyGroupCount for MultigroupTransport.

  • importances (str) – Importances for MultigroupTransport.

  • adjoint_biasing (str) – AdjointBiasing for MultigroupTransport.

  • reference_cell (mcnpy.Cell) – ReferenceCell for MultigroupTransport.

  • weight_window_normalization (float) – WeightWindowNormalization for MultigroupTransport.

  • compression_limit (str) – CompressionLimit for MultigroupTransport.

class mcnpy.DiscreteReactionCrossSection(*args, **kwargs)

Bases: DiscreteReactionCrossSection, MaterialSetting

A representation of the model object DiscreteReactionCrossSection.

Parameters

  • nuclides (iterable of str) – Nuclides for DiscreteReactionCrossSection.

  • library (iterable of mcnpy.Library) – Library for DiscreteReactionCrossSection.

class mcnpy.MaterialSetting

Bases: ABC