InelasticDiffSphere¶
Description¶
This fitting function models the inelastic part of the dynamics structure factor of a particle undergoing continuous diffusion but confined to a spherical volume, DiffSphere.
Because of the spherical symmetry of the problem, the structure factor
is expressed in terms of the
The value of the momentum transfer can be obtained either through
attribute
Attributes (non-fitting parameters)¶
Name |
Type |
Default |
Description |
---|---|---|---|
Q |
|||
WorkspaceIndex |
Properties (fitting parameters)¶
Name |
Default |
Description |
---|---|---|
Intensity |
1.0 |
scaling factor |
Radius |
2.0 |
Sphere radius, in Angstroms |
Diffusion |
0.05 |
Diffusion coefficient, in units of A^2*THz, if energy in meV, or A^2*PHz if energy in ueV |
Shift |
0.0 |
Shift in domain |
Categories: FitFunctions | QuasiElastic
Source¶
C++ header: InelasticDiffSphere.h
C++ source: InelasticDiffSphere.cpp