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<p class="MsoNormal">Dear SasView team,</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have some corrected SANS data that I am fitting with SasView. The system is SDS 10% in 90% D2O/20% H2O v/v (file 093220_230).</p>
<p class="MsoNormal">I was able to fit it with "EllipsoidModel”, “HayterMSAStructure” (file M2[093220_230_out.txt). Could you please explain me how to extract the structure and form factor?</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">What I tried was to:</p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l1 level1 lfo2"><![if !supportLists]><span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>Fit the data with the above mentioned model</p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l1 level1 lfo2"><![if !supportLists]><span style="mso-list:Ignore">2.<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>Remove the structure factor (just by deselecting it in SasView) to obtain ONLY the form factor (no more fit was performed, only the calculation)</p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l1 level1 lfo2"><![if !supportLists]><span style="mso-list:Ignore">3.<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>Save the curve that is supposed to be a form factor</p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l1 level1 lfo2"><![if !supportLists]><span style="mso-list:Ignore">4.<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>Divide the original data by the form factor to get the structure factor</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">If I do the other way round, so I fit the data, remove the form, fix the structure factor (RED) and from it I get the form (PURPLE CIRCLES) by dividing the original data (BLUE) by the structure, I get this curve:</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><img width="460" height="449" style="width:4.7916in;height:4.677in" id="Picture_x0020_3" src="cid:image001.png@...624..."></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The problem is that I do not see any realistic form factor, as the structure is not completely removed at low q. Do you have any suggestions, please?</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks,</p>
<p class="MsoNormal">Marco</p>
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