core_shell_microgelscostrafo411magnetic_modelticket-1257-vesicle-productticket_1156ticket_1265_superballticket_822_more_unit_tests
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Last change
on this file since 404ebbd was
bb6f0f3,
checked in by Paul Kienzle <pkienzle@…>, 9 years ago
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docs
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Property mode set to
100644
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File size:
1.2 KB
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| [bb6f0f3] | 1 | ********** |
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| 2 | SAS Models |
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| 3 | ********** |
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| 4 | |
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| 5 | Small angle X-ray and Neutron (SAXS and SANS) scattering examines the |
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| 6 | scattering patterns produced by a beam travelling through the sample |
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| 7 | and scattering at low angles. The scattering is computed as a function |
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| 8 | of $q_x$ and $q_y$, which for a given beam wavelength corresponds to |
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| 9 | particular scattering angles. Each pixel on the detector corresponds to |
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| 10 | a different scattering angle. If the sample is unoriented, the scattering |
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| 11 | pattern will appear as rings on the detector. In this case, a circular |
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| 12 | average can be taken with 1-dimension data at $q = \surd (q_x^2 + q_y^2)$ |
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| 13 | compared to the orientationally averaged SAS scattering pattern. |
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| [19dcb933] | 14 | |
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| 15 | Models have certain features in common. |
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| 16 | |
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| 17 | Every model has a *scale* and a *background*. |
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| 18 | |
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| 19 | Talk about orientation, with diagrams for orientation so that we don't need |
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| 20 | a link on every model page? |
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| 21 | |
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| 22 | .. _orientation: |
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| 23 | |
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| 24 | .. figure: img/orientation1.jpg |
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| 25 | |
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| 26 | Orientation in 3D |
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| 27 | |
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| 28 | .. figure: img/orientation2.jpg |
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| 29 | |
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| 30 | Orientation cross sections |
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| 31 | |
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| 32 | Talk about polydispersity. |
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| 33 | |
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| 34 | Talk about magnetism, converting the magnetism help file to inline text here, |
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| 35 | with links so that models can point back to it. |
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| 36 | |
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| 37 | Need to talk about structure factors even though we don't have any |
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| 38 | implemented yet. |
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