Bruker AXS Overview of Biological SAXS Webinar 20120614
Bruker AXS Overview of Biological SAXS Webinar 20120614
Bruker AXS Overview of Biological SAXS Webinar 20120614
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Particle Size – Guinier Law<br />
Guinier law:<br />
I(q) = I(0).e −R2 q 2 /3<br />
ln I q = lnI(0) − R 2 q 2 /3<br />
Valid up to q.R ≤ 1,2<br />
• Guinier plot:<br />
• Rg, radius <strong>of</strong> gyration.<br />
• I(0), Molecular weight<br />
Slope = - ln(10) . R 2 /3<br />
Graphics courtesy <strong>of</strong> Michal Hammel S<strong>AXS</strong> Consulting www.saxs.org<br />
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