Onset of Instability in Restricted Geometry 4He Film Flow

TL;DR

This paper revisits the onset of instability in saturated 4He film flow, providing experimental data that supports recent theoretical predictions and discussing the experimental setup and results.

Contribution

It offers new experimental data that qualitatively agree with recent theoretical models of 4He film flow instability.

Findings

Experimental data supports recent theoretical predictions.

Qualitative agreement between theory and experiment.

Discussion of experimental methods and results.

Abstract

An early study of saturated 4He film flow instability is revisited in view of recent theoretical work by Hiromitsu Takeuchi et al. (arXiv:0909.2144v1 [cond-mat.quant-gas] Sept. 2009). I show additional data that suggests a qualitative agreement with this theory and discuss the experimental details.