openmc.data.KalbachMann¶

class openmc.data.KalbachMann(breakpoints, interpolation, energy, energy_out, precompound, slope)[source]¶

Kalbach-Mann distribution

Parameters

breakpoints (Iterable of int) – Breakpoints defining interpolation regions
interpolation (Iterable of int) – Interpolation codes
energy (Iterable of float) – Incoming energies at which distributions exist
energy_out (Iterable of openmc.stats.Univariate) – Distribution of outgoing energies corresponding to each incoming energy
precompound (Iterable of openmc.data.Tabulated1D) – Precompound factor ‘r’ as a function of outgoing energy for each incoming energy
slope (Iterable of openmc.data.Tabulated1D) – Kalbach-Chadwick angular distribution slope value ‘a’ as a function of outgoing energy for each incoming energy

Variables

breakpoints (Iterable of int) – Breakpoints defining interpolation regions
interpolation (Iterable of int) – Interpolation codes
energy (Iterable of float) – Incoming energies at which distributions exist
energy_out (Iterable of openmc.stats.Univariate) – Distribution of outgoing energies corresponding to each incoming energy
precompound (Iterable of openmc.data.Tabulated1D) – Precompound factor ‘r’ as a function of outgoing energy for each incoming energy
slope (Iterable of openmc.data.Tabulated1D) – Kalbach-Chadwick angular distribution slope value ‘a’ as a function of outgoing energy for each incoming energy

classmethod from_ace(ace, idx, ldis)[source]¶

Generate Kalbach-Mann energy-angle distribution from ACE data

Parameters

ace (openmc.data.ace.Table) – ACE table to read from
idx (int) – Index in XSS array of the start of the energy distribution data (LDIS + LOCC - 1)
ldis (int) – Index in XSS array of the start of the energy distribution block (e.g. JXS[11])

Returns

Kalbach-Mann energy-angle distribution

Return type

openmc.data.KalbachMann

classmethod from_endf(file_obj, za_emitted, za_target, projectile_mass)[source]¶

Generate Kalbach-Mann distribution from an ENDF evaluation.

If the projectile is a neutron, the slope is calculated when it is not given explicitly.

Changed in version 0.13.1: Arguments changed to accommodate slope calculation

Parameters

file_obj (file-like object) – ENDF file positioned at the start of the Kalbach-Mann distribution
za_emitted (int) – ZA identifier of the emitted particle
za_target (int) – ZA identifier of the target
projectile_mass (float) – Mass of the projectile

Warns

UserWarning – If the mass of the projectile is not equal to 1 (other than a neutron), the slope is not calculated and set to 0 if missing.

Returns

Kalbach-Mann energy-angle distribution

Return type

openmc.data.KalbachMann

classmethod from_hdf5(group)[source]¶

Generate Kalbach-Mann distribution from HDF5 data

to_hdf5(group)[source]¶

Write distribution to an HDF5 group