Dynamic Light Scattering

Figure 2. Exponential decay of the correlation function.

The correlation function for a system experiencing Brownian motion \(G(t)\) decays exponentially with decay constant \(\Gamma\).

\[G(t)=e^{-\Gamma t}\]

\(\Gamma\) is related to the diffusivity of the particle by

\[\Gamma=-Dq^{^{2}} \]

where

\[q=\frac{4\pi n }{\lambda}\sin(\dfrac{\Theta }{2})\]

Contributors and Attributions

• Ben Nail (University of California Davis Chemistry Department)