Figure 4
Most data collection frames are shaded by the steel support components of the pressure cell. These regions are excluded from the integration by means of dynamic masks. A partially shaded frame (top) and its corresponding mask (bottom) are shown. The masked region is black. Note that, in contrast to the frame shown in Fig. 1, the cell was at such an angle that the incident beam did not pass through a Be backing disk; therefore, no Be powder lines are observed. The narrow powder lines on this image derive from the tungsten gasket. |