Abstract
We have performed simultaneous adsorption isotherm and small angle x-ray scattering (SAXS) measurements of 4He adsorption into 98% porous aerogel at 3.5K. Measurements indicate a two phase coexistence at vapor pressures slightly below the bulk liquid-vapor equilibrium point. SAXS data are interpreted according to a model which consists of the coexistence of a film phase where the aerogel strands are coated with a liquid film and a filled-pore phase were the pores defined by neighboring strands are filled with liquid.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 591-596 |
| Number of pages | 6 |
| Journal | Journal of Low Temperature Physics |
| Volume | 121 |
| Issue number | 5-6 |
| DOIs | |
| State | Published - 2000 |
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
- General Materials Science
- Condensed Matter Physics