The turbulent drag force in superfluid 3He−4He mixtures under oscillations of a quartz tuning fork
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F21%3A00563788" target="_blank" >RIV/68378271:_____/21:00563788 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1063/10.0006059" target="_blank" >https://doi.org/10.1063/10.0006059</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/10.0006059" target="_blank" >10.1063/10.0006059</a>
Alternative languages
Result language
angličtina
Original language name
The turbulent drag force in superfluid 3He−4He mixtures under oscillations of a quartz tuning fork
Original language description
We have studied the resonance curves of a quartz tuning fork of the fundamental frequency 32 kHz immersed in superfluid 4He and mixtures 3He–4He with 3He concentration of 5 and 15% in the temperature range of 0.35–2.5 K at saturated vapor pressure. Two types of experiments have been carried out, with a tuning fork both not covered by a bulb and coated by a bulb, i.e., in the restricted geometry. In both cases, the velocity-force dependences for the tuning fork showed a linear damping force at low peak velocities and extra drag due to the appearance of vortex lines accompanying the transition to turbulence under increasing peak velocity. These dependencies are mainly determined by the density of the normal helium component. There is a pronounced difference between superfluid 4He and mixtures of 3He in 4He, where 3He impurity particles provide a constant temperature-independent contribution to the normal component of the mixture.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10305 - Fluids and plasma physics (including surface physics)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Low Temperature Physics
ISSN
1063-777X
e-ISSN
1090-6517
Volume of the periodical
47
Issue of the periodical within the volume
10
Country of publishing house
RU - RUSSIAN FEDERATION
Number of pages
7
Pages from-to
805-811
UT code for WoS article
000723255500001
EID of the result in the Scopus database
2-s2.0-85118840068