F. Bonnet et al 2008 EPL 82 56003 doi:10.1209/0295-5075/82/56003
F. Bonnet1, T. Lambert1, B. Cross1, L. Guyon1, F. Despetis2, L. Puech1 and P. E. Wolf1
Show affiliationsWe report on thermodynamic and optical measurements of the condensation process of 4He in three silica aerogels of different microstructures. For the two base-catalysed aerogels, the temperature dependence of the shape of adsorption isotherms and of the morphology of the condensation process show evidence of a disorder-driven transition, in agreement with recent theoretical predictions. This transition is not observed for a neutral-catalysed aerogel, which we interpret as due to a larger disorder in this case.
64.70.F- Liquid–vapor transitions
Issue 5 (June 2008)
Received 19 February 2008, accepted for publication 14 May 2008
Published 23 May 2008
F. Bonnet et al 2008 EPL 82 56003
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