Figure 7
(a) Schematic of the principle of ED-XRD based on Bragg's law for a sample inside an octahedral assembly surrounded by eight WC anvils. (b) Calculation of the gauge length (i.e. the red line labelled `length') as a function of detector angle position (2θ), incident beam and collimated beam size. (c) Calculation of the scattering vector Q (Å−1) as a function of energy (in the case of ED-XRD) and 2θ (the detector position). The solid lines indicate typically used detector positions and the available Q range for these positions up to 160 keV. An asterisk (*) indicates these positions can only be obtained using one Ge-SSD and the LVP pre-rotated to increase the access angle. |