Cavitation generated by vibrating quartz tuning fork in concentrated 3 He–4 He mixture

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2FCZ______%3A_____%2F23%3AN0000036" target="_blank" >RIV/CZ______:_____/23:N0000036 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.aip.org/aip/ltp/article/49/5/583/2891358/Cavitation-generated-by-vibrating-quartz-tuning" target="_blank" >https://pubs.aip.org/aip/ltp/article/49/5/583/2891358/Cavitation-generated-by-vibrating-quartz-tuning</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/10.0017820" target="_blank" >10.1063/10.0017820</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Cavitation generated by vibrating quartz tuning fork in concentrated 3 He–4 He mixture

Popis výsledku v původním jazyce

The state of the problem of cavitation in superfluid helium and the content of previous works on this topic are analyzed. The transition between turbulent flow and cavitation under oscillations of a quartz tuning fork in a normal and superfluid isotopic mixture containing 15% of He-3 in the temperature range of 0.5-3 K is studied experimentally. The temperature dependences of the critical velocity for the cavitation onset and the critical transition excitation force are obtained. We compare the results of our measurements with the data obtained by other groups. The results of measurements with tuning forks in restricted and unrestricted geometries suggest that the presence of acoustic emission facilitates the conditions for the onset of cavitation and indirectly confirms the role of vortex lines. A comparison of the temperature dependences of the critical velocity of cavitation onset in pure He-4 and a concentrated He-3-He-4 mixture did not give an unambiguous answer to the reason for the sharp increase of this velocity, at the transition to the superfluid state, and the contributions of both thermal effects and the He-3 impurities to the velocity increase.

Název v anglickém jazyce

Cavitation generated by vibrating quartz tuning fork in concentrated 3 He–4 He mixture

Popis výsledku anglicky

The state of the problem of cavitation in superfluid helium and the content of previous works on this topic are analyzed. The transition between turbulent flow and cavitation under oscillations of a quartz tuning fork in a normal and superfluid isotopic mixture containing 15% of He-3 in the temperature range of 0.5-3 K is studied experimentally. The temperature dependences of the critical velocity for the cavitation onset and the critical transition excitation force are obtained. We compare the results of our measurements with the data obtained by other groups. The results of measurements with tuning forks in restricted and unrestricted geometries suggest that the presence of acoustic emission facilitates the conditions for the onset of cavitation and indirectly confirms the role of vortex lines. A comparison of the temperature dependences of the critical velocity of cavitation onset in pure He-4 and a concentrated He-3-He-4 mixture did not give an unambiguous answer to the reason for the sharp increase of this velocity, at the transition to the superfluid state, and the contributions of both thermal effects and the He-3 impurities to the velocity increase.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

—

Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Low Temperature Physics

ISSN

1063-777X

e-ISSN

1090-6517

Svazek periodika

49

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

583-592

Kód UT WoS článku

001000069400011

EID výsledku v databázi Scopus

2-s2.0-85159785551