Opened 10 years ago
Last modified 6 years ago
#289 assigned enhancement
Add model for cubic sponge phase
| Reported by: | ajj | Owned by: | none |
|---|---|---|---|
| Priority: | minor | Milestone: | SasView Next Release +1 |
| Component: | SasView | Keywords: | |
| Cc: | Work Package: | SasModels New Model |
Description
Student of Tommy Nylander, Maria Valldeperas, has asked to be able to add a model for her system which is a cubic sponge phase of lipids.
Might be doable with python, but I suspect that some polydispersity will be needed from previous fitting of these systems that Tommy is working on.
Paper attached.
Attachments (5)
Change History (9)
Changed 10 years ago by ajj
comment:1 Changed 10 years ago by butler
- Work Package changed from SasView Bug Fixing to SasModels New Model
comment:2 Changed 6 years ago by butler
- Owner changed from ajj to none
- Status changed from new to assigned
comment:3 Changed 6 years ago by butler
The reference she used for her model is:
L. Porcar, W.A. Hamilton, P.D. Butler, G.G. Warr; Langmuir 19, 10779-10794 (2003)
Equations 1 for S(Q) and 2 for P(Q).
comment:4 Changed 6 years ago by butler
Maria Valldeperas implemented this model for her thesis. Attached are the various files she created in the process that can be used as a starting point. The first two are just equation 1 and 2 from the paper listed above (the disk "form factor" and the "structure factor" used to create the sponge).
She then modified equation one to:
since the first part of the equation was not changing much the fitting and I wanted to simplify the model
She also created two versions of this simplified model with a single and a double "broad peak" respectively. We need to figure out which of these we need to/want to implement.
actually Maria worked with me to get SasView 4.2.x (developer versions) to work (is how we found the problems with double loading of math etc). I believe she eventually got this to work and I may have the code that enventually worked. We should ask her and/or Tommy about getting that added?