About: Mutual interactions between objects oscillating in isotopically pure superfluid He-4 in the T -> 0 limit

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About: Mutual interactions between objects oscillating in isotopically pure superfluid He-4 in the T -> 0 limit Goto Sponge NotDistinct Permalink

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Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://dx.doi.org/10.1063/1.4765091
Description	We report the results of experiments to explore interactions between physically separated oscillating objects in isotopically pure superfluid He-4 at T similar to 10 mK. The investigations focused mainly on 32 kHz quartz tuning forks, but also consider a nearby 1 kHz oscillating grid. The low-drive linewidth (LDL) and resonant frequency f(d) of a detector fork were monitored while the maximum velocity of a transmitter fork, separated from the detector by a few mm, was varied over a wide range. Clear evidence was found for mutual interactions between the two forks, and for the influence of the grid on the forks. Monitoring the detector's LDL and f(d) provides evidence for a generator critical velocity in the range 0.3 < nu(c1) < 1.0 cm/s for onset of the detector responses, in addition to a second critical velocity nu(c2) similar to 13 cm/s probably corresponding to the production of quantum turbulence at the generator. The results are discussed, but are not yet fully understood. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4765091] We report the results of experiments to explore interactions between physically separated oscillating objects in isotopically pure superfluid He-4 at T similar to 10 mK. The investigations focused mainly on 32 kHz quartz tuning forks, but also consider a nearby 1 kHz oscillating grid. The low-drive linewidth (LDL) and resonant frequency f(d) of a detector fork were monitored while the maximum velocity of a transmitter fork, separated from the detector by a few mm, was varied over a wide range. Clear evidence was found for mutual interactions between the two forks, and for the influence of the grid on the forks. Monitoring the detector's LDL and f(d) provides evidence for a generator critical velocity in the range 0.3 < nu(c1) < 1.0 cm/s for onset of the detector responses, in addition to a second critical velocity nu(c2) similar to 13 cm/s probably corresponding to the production of quantum turbulence at the generator. The results are discussed, but are not yet fully understood. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4765091] (en)
Title	Mutual interactions between objects oscillating in isotopically pure superfluid He-4 in the T -> 0 limit Mutual interactions between objects oscillating in isotopically pure superfluid He-4 in the T -> 0 limit (en)
skos:prefLabel	Mutual interactions between objects oscillating in isotopically pure superfluid He-4 in the T -> 0 limit Mutual interactions between objects oscillating in isotopically pure superfluid He-4 in the T -> 0 limit (en)
skos:notation	RIV/00216208:11320/12:10131293!RIV13-MSM-11320___
http://linked.open...avai/riv/aktivita	I
http://linked.open...avai/riv/aktivity	I
http://linked.open...iv/cisloPeriodika	11
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Skrbek, Ladislav
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Karlova v Praze / Matematicko-fyzikální fakulta
http://linked.open...dnocenehoVysledku	152555
http://linked.open...ai/riv/idVysledku	RIV/00216208:11320/12:10131293
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	quantum; creation; laminar; transition; turbulence; vibrating-wire; helium liquids; low-temperatures; critical velocity; quartz tuning fork (en)
http://linked.open.../riv/klicoveSlovo	helium liquids creation turbulence quantum laminar critical velocity low-temperatures quartz tuning fork vibrating-wire transition
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[DE8A371F07B6]
http://linked.open...i/riv/nazevZdroje	Low Temperature Physics
http://linked.open...in/vavai/riv/obor	BK
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	38
http://linked.open...iv/tvurceVysledku	Skrbek, Ladislav Efimov, V. B. Giltrow, M. McClintock, P. V. E. Garg, D.
http://linked.open...ain/vavai/riv/wos	000312045400006
issn	1063-777X
number of pages	6 (xsd:int)
http://bibframe.org/vocab/doi	10.1063/1.4765091
http://localhost/t...ganizacniJednotka	11320

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