| Rpa |
.. warning:: This model is not functioning correctly in SasView and it appears it has not done so for some time. Whilst the problem is investigated, a workaround for Case 0 below (the most common use case) is t… |
| Stacked Disks |
Definition
This model provides the form factor, $P(q)$, for stacked discs (tactoids) with a core/layer structure which is constructed itself as $P(q) S(Q)$ multiplying a $P(q)$ for individual core/layer disks by a structure factor $S(q)$ propo… |
| Hayter Msa |
# Note: model title and parameter table are inserted automatically Calculates the interparticle structure factor for a system of charged, spheroidal, objects in a dielectric medium [1,2]. When combined with an appropriate form factor $P(q)$, this al… |
| Broad Peak |
Definition
This model calculates an empirical functional form for SAS data characterized by a broad scattering peak. Many SAS spectra are characterized by a broad peak even though they are from amorphous soft materials. For example, soft syste… |
| Multilayer Vesicle |
Definition
This model is a trivial extension of the core_shell_sphere function where the core is filled with solvent and is surrounded by $N$ shells of material (such as lipids) interleaved with $N - 1$ layers of solvent. For $N = 1$, this ret… |
| Stickyhardsphere |
# Note: model title and parameter table are inserted automatically Calculates the interparticle structure factor for a hard sphere fluid with a narrow, attractive, potential well. Unlike the `squarewell` model, here a perturbative solution of the Pe… |
| Spherical Sld |
Definition
Similarly to the onion, this model provides the form factor, $P(q)$, for a multi-shell sphere, where the interface between the each neighboring shells can be described by the error function, power-law, or exponential functions. The… |
| Gauss Lorentz Gel |
This model calculates the scattering from a gel structure, but typically a physical rather than chemical network. It is modeled as a sum of a low-q exponential decay (which happens to give a functional form similar to Guinier scattering, so interpre… |
| Core Shell Bicelle Elliptical |
Definition
This model provides the form factor for an elliptical cylinder with a core-shell scattering length density profile [#Onsager1949]_. Thus this is a variation of the core-shell bicelle model, but with an elliptical cylinder for the co… |
| Triaxial Ellipsoid |
# triaxial ellipsoid model # Note: model title and parameter table are inserted automatically Definition
Ellipsoid with $R_a$ as *radius_equat_minor*, $R_b$ as *radius_equat_major* and $R_c$ as *radius_polar*.
Given an ellipsoid … |
| Adsorbed Layer |
Definition
This model describes the scattering from a layer of surfactant or polymer adsorbed on large, smooth, notionally spherical particles under the conditions that (i) the particles (cores) are contrast-matched to the dispersion medium, (… |
| Two Lorentzian |
Definition
The scattering intensity $I(q)$ is calculated as
$$ I(q) = \frac{A}{1 +(Q\xi_1)^n} + \frac{C}{1 +(Q\xi_2)^m} + \text{B}
$$
where $A$ = Lorentzian scale factor #1, $C$ = Lorentzian scale #2, $\xi_1$ and $\xi_2$ are the correspon… |
| Vesicle |
Definition
This model provides the form factor, *P(q)*, for an unilamellar vesicle and is effectively identical to the hollow sphere reparameterized to be more intuitive for a vesicle and normalizing the form factor by the volume of the shell.… |
| Surface Fractal |
This model calculates the scattering from fractal-like aggregates based on the Mildner reference.
Definition
The scattering intensity $I(q)$ is calculated as
$$ \begin{align*} I(q) = \text{scale} \times P(q)S(q) + \text{background} \\ P… |
| Core Multi Shell |
Definition
This model is a trivial extension of the CoreShell function to a larger number of shells. The scattering length density profile for the default sld values (w/ 4 shells).
SLD profile of the core_multi_shell object from the … |