Seeking help fitting low intensity saxs data

[c4kjqkkf96-cloud]

Hi

I need help from SASView experts.
I started using it to fit my liposome saxs data just today for the first time. My scattering intensity data are very low ranging from 10^-3 to 10^-1. So, when I use lamellar_hg fit for my unilamellar popc vesicles I get ginormous chi squared values like 10^12. Please help me to improve my fitting. Thank you!

[andreashlarsen]

Hi. Great that you ask here! How large are your liposomes, approximately? do you see a Guinier region (see tutorial: primary data analysis) - these models are for very large liposomes, might have to change model for smaller liposomes. There could be other reasons. A screenshot of your data/fit would be helpful. best regards, Andreas