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About McStas Download Documentation |
[ Identification | Description | Input parameters | Output parameters | Links ] The
A sample for phonon scattering
based on cross section expressions from Squires, Ch.3.
|
Name | Unit | Description | Default |
---|---|---|---|
radius | m | Outer radius of sample in (x,z) plane | |
yheight | m | Height of sample in y direction | |
sigma_abs | barns | Absorption cross section at 2200 m/s per atom | |
sigma_inc | barns | Incoherent scattering cross section per atom | |
a | AA | fcc Lattice constant | |
b | fm | Scattering length | |
M | a.u. | Atomic mass | |
c | meV/AA^(-1) | Velocity of sound | |
DW | 1 | Debye-Waller factor | |
T | K | Temperature | |
target_x | m | position of target to focus at . Transverse coordinate | 0 |
target_y | m | position of target to focus at. Vertical coordinate | 0 |
target_z | m | position of target to focus at. Straight ahead. | 0 |
target_index | 1 | relative index of component to focus at, e.g. next is +1 | 0 |
focus_r | m | Radius of sphere containing target. | 0 |
focus_xw | m | horiz. dimension of a rectangular area | 0 |
focus_yh | m | vert. dimension of a rectangular area | 0 |
focus_aw | deg | horiz. angular dimension of a rectangular area | 0 |
focus_ah | deg | vert. angular dimension of a rectangular area | 0 |
Phonon_simple.comp
.
[ Identification | Description | Input parameters | Output parameters | Links ]
Generated automatically by McDoc, Peter Willendrup <peter.willendrup@risoe.dk> / Sun Dec 20 10:00:31 2020