Opened 6 years ago
Last modified 2 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 6 years ago by ajj
comment:1 Changed 6 years ago by butler
- Work Package changed from SasView Bug Fixing to SasModels New Model
comment:2 Changed 2 years ago by butler
- Owner changed from ajj to none
- Status changed from new to assigned
comment:3 Changed 2 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 2 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?