Port of PhononSimple to Union components
Author: Anders Komar Ravn, based on template by Mads Bertelsen and Phonon_Simple
Origin: University of Copenhagen
Date: 20.08.15
Port of the PhononSimple component from the McStas library to the Union components.
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
Parameters in boldface are required; the others are optional.
|
Name |
Unit |
Description |
Default |
|
|
|||
|
packing_factor |
1 |
How dense is the material compared to optimal 0-1 |
1 |
|
unit_cell_volume |
Å\(^{3}\) |
Unit cell volume |
13.8 |
|
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 |
|
a |
Å |
fcc lattice constant |
4.95 |
|
c |
meV*Å |
Velocity of sound |
10 |
|
M |
units |
Nucleus atomic mass in units |
207.2 |
|
b |
fm |
Scattring length |
9.4 |
|
T |
K |
Temperature |
290 |
|
DW |
1 |
Debye-Waller factor |
1 |
|
longitudinal |
0/1 |
Simulate longitudinal branches |
1 |
|
transverse |
0/1 |
Simulate transverse branches |
1 |
|
init |
string |
Name of Union_init component (typically "init", default) |
"init" |
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Component source code found in file PhononSimple_process.comp.