The unweighted fit of the correlation curve is done using the Levenberg-Marquart algorithm. Reduced chi2 is calculated as follows:
where Gt is the correlation curve value, Ft the fit value, N the number of correlation/fit values and DF the number of fit parameters.
Auto Correlation Fit Models
You can select one of the following models:
One Component 2D
One Component 3D
Two Component 2D
Two Component 3D
One Component Anomalous 2D
One Component Anomalous 3D
Parameters
The parameters used in the calculations are the following:
|
Parameter |
Description |
|---|---|
|
A |
The correlation amplitude. |
|
Tt |
The triplet fraction. |
|
Td1 |
The translational diffusion time. |
|
S |
The structural parameter. |
|
τt |
τt = 3µs is the fixed triplet relaxation time. |
|
cf1 |
The first component fraction. |