FIG. 7.

The structure factor and the role of effective persistence length. The solid curve is the structure factor for KWLC with contour length L=4ξ, and kink parameter ζ =4/ξ. For comparison, we have plotted the structure factor for WLC of the same contour length for identical bend persistence lengths (dashed) and identical effective persistence length (dotted). At short length scales (large wave number) the KWLC structure factor approaches that for WLC with an identical bend persistence length. At long length scales (small wave number), the KWLC structure factor approaches that for WLC with a persistence length equal to its effective persistence length ξ*. We have also plotted the structure factor for rigid rod (dot dashed curve) for comparison.