X-ray image was accumulated. Fig.1 shows a section of the mesh image with the bars clearly resolved. The surface brightness variation within the image stems from the non-uniformity of the UV lamp illumination. The detector resolution can be found, following the method outlined by Fraser et.al. UV image of photo-etched mesh.
Rectangle indicates position of slice displayed in fig.
Therefore the limiting resolution for the small and large area detectors is 18 and 38 microns respectively. In this section we report on the use of our system for detecting 14 C labeled material. Fig.3 shows the resulting image after a 20 hour accumulation. However, due to self absorption the flux of betas escaping the Microscale will be much less than this value. Therefore the lowest activity cell, fig.3, has an equivalent activity of only 0.031Bq which we present as the current limiting sensitivity of our detector.