Charges near the free surface of liquid helium: collective effects

Charges near the free surface of liquid helium: collective effects

Two types of two-dimensional (2D) charged systems can appear near the free surface of liquid helium: surface electrons and surface ions [1]. The existence of these two systems has been predicted almost simultaneously (see Ref. [2] ). However, the electron variant of the problem has subsequently been investigated more thoroughly both theoretically and experimentally. The interest in 2D ion syste...

On Quantum Effects near the Liquid–Vapor Transition in Helium

The liquid–vapor transition in He and He is investigated by means of path-integral molecular dynamics and the quantum virial expansion. Both methods are applied to the critical isobar and the critical isochore. While previous path-integral simulations have mainly considered the lambda transition and superfluid regime in He, we focus on the vicinity of the critical point and obtain good agreemen...

Neutron reflection from the liquid helium surface

Theory of Charges near a Jellium Surface

Exact Solutions of the Equations of Motion of Liquid Helium with a Charged Free Surface

The dynamics of the development of instability of the free surface of liquid helium, which is charged by electrons localized above it, is studied. It is shown that, if the charge completely screens the electric field above the surface and its magnitude is much larger then the instability threshold, the asymptotic behavior of the system can be described by the well-known 3D Laplacian growth equa...