X-ray reflectivity study of temperature-dependent surface layering in liquid Hg
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چکیده
We report x-ray reflectivity measurements of liquid mercury between 236 °C and 125 °C. The surface structure can be described by a layered density profile convolved with a thermal roughness sT . The layering has a spacing of 2.72 Å and an exponential decay length of 5.0 Å. Surprisingly, sT is found to increase considerably faster with temperature than the AT behavior predicted by capillary wave theory, in contrast with previous measurements on Ga and dielectric liquids. @S0163-1829~98!52144-3#
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تاریخ انتشار 1998