[ Identification | Description | Input parameters | Links ]
AF_HB_1D_process Component1D Antiferromagnetic Heisenberg chain Part of the Union components, a set of components that work together and thus sperates 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 Only in step 4 will any simulation happen, and per default all geometries defined before the master, but after the previous will be simulated here. There is a dedicated manual available for the Union_components Algorithm: Described elsewhere
| Name | Unit | Description | Default | |
| atom_distance | AA | Distance between atom's in chain | 1 | |
| number_density | 1/AA^3 | Number of scatteres per volume | 0 | |
| unit_cell_volume | AA^3 | Unit cell volume (set either unit_cell_volume or number density) | 0 | |
| A_constant | unitless | Constant from Müller paper 1981, probably somewhere between 1 and 1.5 | 1 | |
| J_interaction | meV | Exchange constant | 1 | |
| packing_factor | 1 | How dense is the material compared to optimal 0-1 | 1 | |
| 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 | string | name of Union_init component (typically "init", default) | "init" |
| AT ( | , | , | ) RELATIVE | |||
|---|---|---|---|---|---|---|
| ROTATED ( | , | , | ) RELATIVE |
AF_HB_1D_process.comp.
[ Identification | Description | Input parameters | Links ]
Generated on 2023-09-19 20:01:36