| Maier-Saupe |
Maier-Saupe dispersion for orientation
$w(\theta) = e^{a{\cos^2 \theta}}$
This provides a close match to the gaussian distribution for low angles, but the tails are limited to $\pm 90^\circ$. For $a \ll 1$ the distribution is approximat... |
| Cyclic Gaussian |
Cyclic gaussian dispersion for orientation.
$w(\theta) = e^{-\frac{\sin^2 \theta}{2 \sigma^2}}$
This provides a close match to the gaussian distribution for low angles, but the tails are limited to $\pm 90^\circ$. For $\sigma$ large the... |
| Cumulants |
The Method of Cumulants.
Definition
THIS MODEL IS NOT INTENDED FOR THE ANALYSIS OF SAXS/SANS DATA!
This model is in part provided to illustrate the utility of SasView as a fitting program for the analysis of input data that is not $I(q)... |
| Cumulants DLS |
DLS analysis by the method of Cumulants.
Definition
THIS MODEL IS NOT INTENDED FOR THE ANALYSIS OF SAXS/SANS DATA!
This model is in part provided to illustrate the utility of SasView as a fitting program for the analysis of input data t... |
| Peak Voigt |
This model describes a pseudo-Voigt shaped peak on a flat background.
Definition
This pseudo-Voigt peak function is a weighted linear summation of Lorentzian (L) and Gaussian (G) peak shapes. The usefulness of this
function is that it produce... |
| Long Cylinder |
Cylinder model for long cylinders.
Background
The default numerical integration scheme in SasView leads to numerical instabilities in the calculation of the cylinder form factor when the length of the cylinders becomes too long. For practical ... |
| Sphere Concentration A |
Spheres with uniform scattering length density reparameterized to used to use the *volume number density* of spheres, NOT the volume fraction of spheres as in the normal SasView sphere model.
Also note that, unlike most other SasView models, th... |
| Binary Blend |
Two-component RPA model with a flat background.
DEFINITION
This model calculates the scattering from a two component polymer blend using the Random Phase Approximation (RPA).
The two polymers are assumed to be monodisperse.
The scattered... |
| Exponential |
Flexible exponential model with a flat background.
DEFINITION
This model calculates a variety of exponential functions.
The scattered intensity $I(q)$ is calculated as
$I(q) = \text{scale} \cdot exp(-\text{prefactor} \cdot q^{\text{ex... |
| Fractal S(q) |
Calculates the structure factor term ONLY from the Fractal model.
Definition
------------
The Teixeira & Chen fractal structure factor.
Calculates the structure factor for mass fractal aggregates of monodisperse spherical particles of effe... |
| Mass Fractal S(q) |
Calculates the structure factor term ONLY from the Mass Fractal model.
Definition
----------
The Sinha-Mildner-Hall fractal structure factor.
The functional form of the structure factor is defined below
\begin{equation}
S(q) = \fra... |