[ Identification | Description | Input parameters | Links ]

`IncoherentPhonon_process`

Component-
**Site:** -
**Author:**Victor Laliena -
**Origin:**University of Zaragoza -
**Date:**06.11.2018

Part of the Union components, a set of components that work together and thus expects geometry and physics within McStas. The use of this component requires other components to be used. 1) One specifies a number of processes using process components like this one 2) These are gathered into material definitions using Union_make_material 3) Geometries are placed using Union_box / Union_cylinder, assigned a material 4) A Union_master component placed after all of the above Algorithm: Described elsewhere, see e.g. https://doi.org/10.3233/JNR-190117

Name | Unit | Description | Default | |

T | K | Temperature | 394 | |

density | g/cm3 | Material density | 6.0 | |

M | amu | ion mass | 50.94 | |

sigmaCoh | barns | Coherent scattering cross section | 0.0184 | |

sigmaInc | barns | Incoherent scattering cross section | 5.08 | |

DOSfn | string | Path to the file that contains the DoS | NULL | |

nphe_exact | 1 | Number of terms in the phonon expansion taken exact. Has to be between 1 and 3. | 1 | |

nphe_approx | 1 | Number of terms in the phonon expansion taken approximate. | 0 | |

approx | 1 | Approximation type: 0 gaussian, 1 saddle point | 0 | |

mph_resum | 0/1 | Resumate the remaining terms of the phonon expansion via a saddle point: 0 No, 1 Yes | 0 | |

nxs | 1 | Number of energy points at which the total cross sections are precomputed | 1000 | |

kabsmin | A^-1 | Lower cut-off for the neutron wave-vector k | 0.1 | |

kabsmax | A^-1 | Higher cut-off for the neutron wave-vector k | 25 | |

interact_fraction | 1 | How large a part of the scattering events should use this process 0-1 (sum of all processes in material = 1) | -1 | |

init | "init" |

AT ( | , | , | ) RELATIVE | |||
---|---|---|---|---|---|---|

ROTATED ( | , | , | ) RELATIVE |

- Source code for
`IncoherentPhonon_process.comp`

. - See https://doi.org/10.3233/JNR-190117

[ Identification | Description | Input parameters | Links ]

Generated on 2023-09-19 20:01:36