The Nonwetting Behavior of Dilute 3He-4He Mixtures on Cs |
| |
Authors: | Jürgen Klier Adrian F G Wyatt |
| |
Affiliation: | (1) Department of Physics, University of Exeter, Exeter, EX4 4QL, United Kingdom;(2) Fakultät für Physik, Universität Konstanz, 78434 Konstanz, Germany |
| |
Abstract: | We present evidence for
3
He interfacial bound states at the Cs-liquid He interface and show their influence on the interfacial free energies and the nonwetting behaviour of dilute
3
He-
4
He mixtures on Cs. The bound state energy and effective mass for the
3
He atoms at this interface are determined and found to be in good agreement with theoretical predictions. From the temperature dependence of the contact angle, direct evidence for a first order wetting transition at the lower wetting temperature is found. A detailed model is presented for the Cs-He mixture interface free energy and the contact angle and this model is shown to be in excellent agreement with the measurements. There is a short discussion on hysteresis and the thin film state. Finally it is emphasised that the large measured contact angles are only consistent with
3
He bound states together with ripplons at the Cs-He mixture interface |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|