Fig. 7.

Autocorrelation function, $c(r)$ for a sphere of radius R = 12.5 Å (solid), infinitely long cylinder of radius R = 12.5 Å (dashed), and infinitely wide disk of thickness L = 25 Å (dotted). Also shown are the lines corresponding to the sphere at low r (dot–dashed) and the cylinder or disk at low r (intermittent dots).