Changeset eb69cce in sasmodels for sasmodels/models/fcc.py
- Timestamp:
- Nov 30, 2015 7:18:41 PM (8 years ago)
- Branches:
- master, core_shell_microgels, costrafo411, magnetic_model, release_v0.94, release_v0.95, ticket-1257-vesicle-product, ticket_1156, ticket_1265_superball, ticket_822_more_unit_tests
- Children:
- d18f8a8
- Parents:
- d138d43
- File:
-
- 1 edited
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sasmodels/models/fcc.py
rd138d43 reb69cce 16 16 .. math:: 17 17 18 I(q) = \frac{\text{scale}}{V_p} P(q) Z(q)18 I(q) = \frac{\text{scale}}{V_p} V_\text{lattice} P(q) Z(q) 19 19 20 20 where *scale* is the volume fraction of spheres, $V_p$ is the volume of 21 the primary particle, *V(lattice)*is a volume correction for the crystal21 the primary particle, $V_\text{lattice}$ is a volume correction for the crystal 22 22 structure, $P(q)$ is the form factor of the sphere (normalized), and $Z(q)$ 23 23 is the paracrystalline structure factor for a face-centered cubic structure. … … 27 27 28 28 The lattice correction (the occupied volume of the lattice) for a 29 face-centered cubic structure of particles of radius *R*and nearest29 face-centered cubic structure of particles of radius $R$ and nearest 30 30 neighbor separation $D$ is 31 31 … … 78 78 1D plot in the linear scale using the default values (w/200 data point). 79 79 80 The 2D (Anisotropic model) is based on the reference below where *I(q)*is80 The 2D (Anisotropic model) is based on the reference below where $I(q)$ is 81 81 approximated for 1d scattering. Thus the scattering pattern for 2D may not 82 82 be accurate. Note that we are not responsible for any incorrectness of the 83 83 2D model computation. 84 84 85 .. figure:: img/crystal_orientation. gif85 .. figure:: img/crystal_orientation.png 86 86 87 87 Orientation of the crystal with respect to the scattering plane. … … 91 91 2D plot using the default values (w/200X200 pixels). 92 92 93 Reference 94 --------- 93 References 94 ---------- 95 95 96 96 Hideki Matsuoka et. al. *Physical Review B*, 36 (1987) 1754-1765
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