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InelasticDiffRotDiscreteCircle¶
Description¶
Summary¶
This fitting function models the inelastic part of the dynamics structure factor of a particle undergoing discrete jumps on N-sites evenly distributed in a circle. The particle can only jump to neighboring sites. This is the most common type of discrete rotational diffusion in a circle.
with h = 4.135665616 meV ps.
This function makes up the inelastic part of DiffRotDiscreteCircle.
Attributes (non-fitting parameters)¶
Name |
Type |
Default |
Description |
---|---|---|---|
N |
|||
Q |
|||
WorkspaceIndex |
\(N\) (integer, default=3) number of sites - \(Q\) (double, default=0.5) Momentum transfer - \(WorkspaceIndex\) (integer, default=0)
Properties (fitting parameters)¶
Name |
Default |
Description |
---|---|---|
Intensity |
1.0 |
scaling factor [no units] |
Radius |
1.0 |
Circle radius [Angstroms] |
Decay |
1.0 |
Inverse of transition rate, in nanoseconds if energy in micro-ev, or picoseconds if energy in mili-eV |
Shift |
0.0 |
Shift in the centre of the peak |
Categories: FitFunctions | QuasiElastic
Source¶
C++ header: InelasticDiffRotDiscreteCircle.h
C++ source: InelasticDiffRotDiscreteCircle.cpp