Figure 9
Derivative of the beam intensity (dots) obtained at 60 keV by scanning the KB focal spot with a 200 µm-diameter Au wire (a) horizontally and (b) vertically. The derivative of the convolution between a Gaussian function of unknown width (KB focal spot) and the wire transmission function is used as a model for the fit (continuous line). The vertical and horizontal FWHM are 0.3 µm and 0.6 µm, respectively. |