Figure 2
(a) Normalized intensity during the `knife-edge scans' of a 250 µm-thick tantalum wire at 10.3, 10.4 and 10.5 keV. (b) Derivatives of the intensity during the knife-edge scans shown in (a). The full width at half-maximum (FWHM) represents a horizontal focal size of ∼3.5 µm. |