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*celine, 17 Apr 2015 14:00 *

# Covered IsGISAXS functionality¶

### IsGISAXS examples¶

Examples from IsGISAXS software package bundle - 15 examples, 26 tests totally.

Example | Description | N tests | Status |
---|---|---|---|

ex-1 | Two types of islands (cylinder, prism3) on top of substrate. No interference function |
1/1 | OK |

ex-2 | Bimodal cylinders on top of substrate. Two gaussian size cylinder distribution |
1/1 | OK |

ex-3 | Cylinder formfactor in BA and DWBA . |
4/5 | OK |

ex-4 | 1D and 2D paracrystal . |
2/2 | OK |

ex-5 | 1D paracrystal fit example . |
1/1 | OK |

ex-6 | 2D lattice with different disorder . |
4/4 | OK |

ex-7 | Mixture of different particles defined in morphology file . |
1/1 | OK |

ex-8 | 2DDL paracrystal . |
2/2 | OK |

ex-9 | Pyramids on top of substrate Rotated pyramids on top of substrate |
2/2 | OK |

ex-10 | Cylinders with interference on top of substrate . |
1/1 | OK |

ex-11 | Core shell nano particles . |
1/1 | OK |

ex-12 | Constrained fit example Mixture of two cylinder types |
1/1 | OK |

ex-13 | Simulated annealing fit example . |
0/1 | OK |

ex-14 | Layered spheres on graded interface . |
0/2 | |

ex-15 | Size spacing correlation approximation . |
1/1 | OK |

### IsGISAXS form factors¶

Status: 19 out of 21

Form factor | Status | Comments | |||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|

1 | Anisotropic Pyramid | OK | |
2 | Box | OK | |
3 | Cone | OK | |
4 | Cone6 | OK | |
5 | Cuboctahedron | OK | |
6 | Cylinder | OK | |
7 | Ellipsoidal Cylinder | OK | |
8 | Full Sphere | OK | |
9 | Full Spheroid | OK | |
10 | Hemi Ellipsoid | OK | |
11 | Infinitely Long Box | OK | |||||||||||

12 | Infinitely Long Ripple1 | ~ | |||||||||||||||||||||||||||||||||||||||||||||||||||

13 | Infinitely Long Ripple2 | ~ | |
14 | Prism3 | OK | |
15 | Prism6 | OK | |
16 | Pyramid | OK | |
17 | Ripple1 | OK | |
18 | Ripple2 | OK | |
19 | Tetrahedron | OK | |||||||||||||||||||||||||||

20 | Truncated Cube | OK | |
20 | Truncated Sphere | OK | |||||||||||||||||||||||||||||||||||||||||||||||

21 | Truncated Spheroid | OK |

### Interference functions¶

Description | Status | Comments | ||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|

1 | No interference | OK | |
1 | decoupling approximation | OK | |
1 | local mono disperse approximation | OK | |
1 | size spacing approximation | OK |

### Pair correlation functions¶

Description | Status | Comments | ||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|

1 | The Debye hard core | |
2 | The gaussian | |
3 | The Lennard-Jonnes | |
4 | The gate pair correlation | |
5 | The Debye hard core with power-law decrease | |
6 | The Zhu pair correlation function | |
7 | The Venables pair correlation function | |
8 | The bidimensional hard core pair function. |

### Other IsGISAXS features¶

form factor | Status | Comments | |||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|

1 | Polarization | |
1 | DWBA on the graded interface | |
1 | Linear interpolation of data before fitting | |
1 | Correlation of H,R,W size of particles | |
1 | Ability to average over beam spread |

### Found IsGISAXS bugs¶

- Ex-14, form factor of sphere

For factor of Sphere with H=2R should be exactly as formfactor of FullSphere, it is not so.

Probably due to numeric instability during integration