In 2006 the Hahn-Meitner-Institute Berlin started establishing a dedicated sample environment (DEGAS), answering the strongly increased requests on neutron scattering experiments combined with in-situ gas adsorption measurements. Due to the complexity of sample preparation and characterization in this type of investigations, it appeared reasonable to offer the suite of the modular experimental set-ups also for preliminary and completing measurements "off-beam" in the laboratory.
Up till now more than 10 different gas-adsorption modules cover a wide pressure and temperature range from 4K to 1500K and pressures up to 10000 bars. Thereby volumetric as well as gravimetric controlled sample loading can be combined with stepwise and continuous gas dosing methods.
The DEGAS laboratory is open for internal and external scientist, if their projected investigations contribute to the preparation or completion of neutron or x-ray scattering research at the Helmholtz Centre Berlin or related facilities. Information on the access to the DEGAS laboratory and it's equipment are available by contacting the lab responsibles Dr. D. Wallacher or Prof. Dr. M. Meissner. A web-based reservation system for the laboratory is actually under construction.
BENSC instrument responsibles can access of the DEGAS equipment for scheduled neutron scattering experiments combined with in-situ gas adsorption via the sample environment booking calendar.