Figure 4
Molecular-weight dependence of the minimum required crystal size. All plotted calculations used VM = 2.4 Å3 Da−1, 1 Å radiation, 2 Å spots and B = 24 Å2. Without photoelectron escape, the required crystal volume is simply proportional to molecular weight and the two different models of photoelectron escape considered here are shown to have significant yet different effects for crystals smaller than a few micrometres wide, as this is the linear dimension of a photoelectron track (RPE). |