Low-Temperature Facility
The low-temperature facility of the Department of Physics is responsible for supplying the working groups with liquid gases. These are mainly liquid nitrogen and liquid helium. In addition, orders for all required gases can be placed at the low-temperature facility.
Liquid nitrogen
Liquid Nitrogen
Nitrogen cans are filled on Mondays, Wednesdays, and Fridays at approximately 1:00 p.m., provided that enough cans (at least 4) are set out by 11:00 a.m. The nitrogen cans should still be cold, otherwise too much nitrogen is needed to cool them down. The cans should also be tested for function, for example, with respect to their rollers.
Liquid helium
Liquid Helium
The need for helium should be announced early (3-4 days in advance) to ensure effective provision.


![3D visualisation of human neuronal tissue reconstructed by multi-scale X-ray phase contrast tomography. Neuronal cell nuclei are shown in yellow for the granule neurons in the dentate gyrus region of the hippocampus. Blood vessels are shown in red. By changing the X-ray optical magnification in the multi-scale recordings, one can zoom into regions-of-interest (red ovals). In these scans the resolution is high enough to resolve sub-structures of the nucleus, associated with different DNA packing regimes. Adapted from [6]](/storages/physik/_processed_/e/4/csm_Kolloquium_Salditt_0e30a3f090.png)




