An oscillating superleak sound transducer

Autor:	E. Vavasour, A. Tyler
Rok vydání:	1976
Předmět:	Physics Superfluidity Resonator Transducer Reaction Acoustics Annulus (firestop) Torque Resonance General Materials Science Boundary value problem Condensed Matter Physics Atomic and Molecular Physics and Optics
Zdroj:	Journal of Low Temperature Physics. 23:267-284
ISSN:	1573-7357 0022-2291
DOI:	10.1007/bf00116920
Popis:	A resonator has been constructed in which a rigid superleak, fixed at one point across an annular cavity filled with liquid 4He, behaves as a differential filter for superfluid flow. The boundary conditions which obtain at the superleak determine the motion of the total fluid in the annulus and, by its reaction force on the superleak, the motion of the resonator as a whole. The condition for resonance motion of the resonator when driven (externally) by a periodic torque has given information about the temperature dependence of the superfluid density in the superleak which, in these experiments, was porous vycor glass.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4b5d9602c9ba7464b92a649fcab67162 https://doi.org/10.1007/bf00116920 Zobrazit plný text záznamu Full text from SpringerLink