Name | Description | Category | Upload Date | Author | Score | Verified |
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Bcc Paracrystal | Definition Calculates the scattering from a **body-centered cubic lattice** with paracrystalline distortion. Thermal vibrations are considered to be negligible, and the size of the paracrysta... | Paracrystal | 07 Sep 2017 | sasview | 0 | |

Line | This model calculates intensity using simple linear function Definition The scattering intensity $I(q)$ is calculated as $$ I(q) = \text{scale} (A + B \cdot q) + \text{background} $$ ... | Shape-Independent | 07 Sep 2017 | sasview | 0 | |

Parallelepiped | # parallelepiped model # Note: model title and parameter table are inserted automatically The form factor is normalized by the particle volume. For information about polarised and magnetic scatteri... | Parallelepiped | 07 Sep 2017 | sasview | 0 | |

Guinier | Definition This model fits the Guinier function $$ I(q) = \text{scale} \cdot \exp{\left[ \frac{-Q^2R_g^2}{3} \right]} + \text{background} $$ to the data directly without any need for lin... | Shape-Independent | 07 Sep 2017 | sasview | 0 | |

Cylinder | # cylinder model # Note: model title and parameter table are inserted automatically For information about polarised and magnetic scattering, see the `magnetism` documentation. Definition ... | Cylinder | 07 Sep 2017 | sasview | 0 | |

Two Power Law | Definition The scattering intensity $I(q)$ is calculated as $$ I(q) = \begin{cases} A q^{-m1} + \text{background} & q <= q_c \\ C q^{-m2} + \text{background} & q > q_c \end{cases} $$ whe... | Shape-Independent | 07 Sep 2017 | sasview | 0 | |

Pringle | Definition The form factor for this bent disc is essentially that of a hyperbolic paraboloid and calculated as $$ P(q) = (\Delta \rho )^2 V \int^{\pi/2}_0 d\psi \sin{\psi} sinc^2 \left( \... | Cylinder | 07 Sep 2017 | sasview | 0 | |

Linear Pearls | This model provides the form factor for $N$ spherical pearls of radius $R$ linearly joined by short strings (or segment length or edge separation) $l$ $(= A - 2R)$. $A$ is the center-to-center pear... | Sphere | 07 Sep 2017 | sasview | 0 | |

Polymer Micelle | This model provides the form factor, $P(q)$, for a micelle with a spherical core and Gaussian polymer chains attached to the surface, thus may be applied to block copolymer micelles. To work wel... | Sphere | 07 Sep 2017 | sasview | 0 | |

Lorentz | Lorentz (Ornstein-Zernicke Model) Definition The Ornstein-Zernicke model is defined by $$ I(q)=\frac{\text{scale}}{1+(qL)^2}+\text{background} $$ The parameter $L$ is the screening len... | Shape-Independent | 07 Sep 2017 | sasview | 0 | |

Fcc Paracrystal | #fcc paracrystal model #note model title and parameter table are automatically inserted #note - calculation requires double precision Calculates the scattering from a **face-centered cubic lattice*... | Paracrystal | 07 Sep 2017 | sasview | 0 | |

Raspberry | Definition The figure below shows a schematic of a large droplet surrounded by several smaller particles forming a structure similar to that of Pickering emulsions. Schematic of the... | Sphere | 07 Sep 2017 | sasview | 0 | |

Onion | This model provides the form factor, $P(q)$, for a multi-shell sphere where the scattering length density (SLD) of each shell is described by an exponential, linear, or constant function. The form ... | Sphere | 07 Sep 2017 | sasview | 0 | |

Power Law | #power_law model #conversion of PowerLawAbsModel.py #converted by Steve King, Dec 2015 This model calculates a simple power law with a flat background. Definition $$ I(q) = \text{scale... | Shape-Independent | 07 Sep 2017 | sasview | 0 | |

Squarewell | # Note: model title and parameter table are inserted automatically This calculates the interparticle structure factor for a square well fluid spherical particles. The mean spherical approximation (... | Structure Factor | 07 Sep 2017 | sasview | 0 | |

Gel Fit | *This model was implemented by an interested user!* Unlike a concentrated polymer solution, the fine-scale polymer distribution in a gel involves at least two characteristic length scales, a sho... | Shape-Independent | 07 Sep 2017 | sasview | 0 | |

Peak Lorentz | This model describes a Lorentzian shaped peak on a flat background. Definition The scattering intensity $I(q)$ is calculated as $$ I(q) = \frac{scale}{\bigl(1+\bigl(\frac{q-q_0}{B}\big... | Shape-Independent | 07 Sep 2017 | sasview | 0 | |

Hardsphere | # Note: model title and parameter table are inserted automatically | Structure Factor | 07 Sep 2017 | sasview | 0 | |

Core Shell Parallelepiped | Definition Calculates the form factor for a rectangular solid with a core-shell structure. The thickness and the scattering length density of the shell or "rim" can be different on each (pair... | Parallelepiped | 07 Sep 2017 | sasview | 0 | |

Correlation Length | #correlation length model # Note: model title and parameter table are inserted automatically Definition The scattering intensity I(q) is calculated as $$ I(Q) = \frac{A}{Q^n} + \frac{C}{1 ... | Shape-Independent | 07 Sep 2017 | sasview | 0 |