A temperature-controlled device for volumetric measurements of Helium   adsorption in porous media
  We describe a set-up for studying adsorption of helium in silica aerogels, where the adsorbed amount is easily and precisely controlled by varying the temperature of a gas reservoir between 80 K and 180 K. We present validation experiments and a first application to aerogels. This device is well adapted to study hysteresis, relaxation, and metastable states in the adsorption and desorption of fluids in porous media. 
Benjamin Cross (NEEL), Laurent Puech (NEEL), Pierre-Etienne Wolf   (NEEL)