Laboratory, optical and precision equipments (excl. glasses)

Description

Aarhus University wants to buy a 3D X-ray microscope for research purposes. The instrument will be used to study the microstructure of bones and other biological materials as well as synthetic materials including for example energy materials and construction materials. A key priority is that the instrument provides spatial resolution ranging from tens of microns to submicron, gives access to multiple contrast modes and affords a large sour-to-sample working distance to enable large sample sizes and/or in-situ measurement cells. The 3D X-ray microscope must have the following specifications 1) The instrument should be a laboratory-based non-destructive 3D X-ray microscope, using both optical and geometric magnifications, with spatial resolution ranging from 50 microns down to submicron (0.5um) and multiple contrast modes: (a) absorption, (b) propagation-based phase, (c) diffraction. 2) The magnification system should be a two-stage magnification geometry that includes both optical magnification and X-ray projection geometry magnification, to provide high spatial resolution at large (>50 mm) source-to-sample working distance (enabling high resolution image of large sample sizes and/or in-situ). Optical magnification should contain objectives -0.4X, 4X, 20X, and 40X additionally, a flat panel extension for large volume imaging must be included; 3) Spatial resolution must be <=0.5 μm using a calibrated linewidth standard; 4) Spatial Resolution at working distance must be <=1.0 μm at >=50 mm clearance around the sample rotation axis; 5) The X-ray source must support up to 160 kV, up to 25 W, closed-source transmission tube to minimize need for filament/target replacement and vacuum maintenance; 6) Advanced visualization/analysis software must be included.