Phonon mediated helium atom transmission through superfluid helium four

• Published in: Journal of low temperature physics Vol. 140; no. 5-6; pp. 429 - 449
• Main Authors: LIDKE, K. A, WYNVEEN, A, BAISCH, N, KOAY, C, GIESE, C. F, HALLEY, J. W
• Format: Journal Article
• Language: English
• Published: Heidelberg Springer 01.09.2005
• Subjects: Condensed matter: structure, mechanical and thermal properties; Exact sciences and technology; Films (including physical adsorption); Physics; Quantum fluids and solids; liquid and solid helium; Thin films; Thickness; Wave transmission; Translational energy; Rotons; Ripplons; Liquid vapor interface; Phonons; Superfluid; Bolometers; Liquid films

We report results of experiments in which pulses of helium vapor with translational energies of 3 K are directed at a thin film of' superfluid helium at a temperature of about 0.2 K suspended over a cesium covered orifice in a platinum film. The response of the superfluid film was detected by a...