Mutual interactions between objects oscillating in isotopically pure superfluid ⁴He in the T → 0 limit
We report the results of experiments to explore interactions between physically separated oscillating objects in isotopically pure superfluid ⁴He at T ∼ 10 mK. The investigations focused mainly on 32 kHz quartz tuning forks, but also consider a nearby 1 kHz oscillating grid. The low-drive linewidt...
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| Опубліковано в: : | Физика низких температур |
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| Дата: | 2012 |
| Автори: | , , , , |
| Формат: | Стаття |
| Мова: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2012
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| Онлайн доступ: | https://nasplib.isofts.kiev.ua/handle/123456789/117921 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Mutual interactions between objects oscillating in isotopically pure superfluid ⁴He in the T → 0 limit / D. Garg, V.B. Efimov, M. Giltrow, P.V.E. McClintock, L. Skrbek // Физика низких температур. — 2012. — Т. 38, № 11. — С. 1300–1305. — Бібліогр.: 31 назв. — англ. |
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Garg, D. Efimov, V.B. Giltrow, M. McClintock, P.V.E. Skrbek, L. 2017-05-27T13:24:26Z 2017-05-27T13:24:26Z 2012 Mutual interactions between objects oscillating in isotopically pure superfluid ⁴He in the T → 0 limit / D. Garg, V.B. Efimov, M. Giltrow, P.V.E. McClintock, L. Skrbek // Физика низких температур. — 2012. — Т. 38, № 11. — С. 1300–1305. — Бібліогр.: 31 назв. — англ. 0132-6414 PACS: 67.25.dk, 47.27.Сn https://nasplib.isofts.kiev.ua/handle/123456789/117921 We report the results of experiments to explore interactions between physically separated oscillating objects in isotopically pure superfluid ⁴He at T ∼ 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 fd 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 fd provides evidence for a generator critical velocity in the range 0.3 < vc₁ <1.0 cm/s for onset of the detector responses, in addition to a second critical velocity vc₂ ∼ 13 cm/s probably corresponding to the production of quantum turbulence at the generator. The results are discussed, but are not yet fully understood. We gratefully acknowledge many valuable discussions with W.F. Vinen. The investigations were supported by the Engineering and Physical Sciences Research Council (UK) and the Russian Academy of Sciences programme “Quantum mesoscopic disordered systems”. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур К 75-летию Л.П. Межова-Деглина Mutual interactions between objects oscillating in isotopically pure superfluid ⁴He in the T → 0 limit Article published earlier |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| title |
Mutual interactions between objects oscillating in isotopically pure superfluid ⁴He in the T → 0 limit |
| spellingShingle |
Mutual interactions between objects oscillating in isotopically pure superfluid ⁴He in the T → 0 limit Garg, D. Efimov, V.B. Giltrow, M. McClintock, P.V.E. Skrbek, L. К 75-летию Л.П. Межова-Деглина |
| title_short |
Mutual interactions between objects oscillating in isotopically pure superfluid ⁴He in the T → 0 limit |
| title_full |
Mutual interactions between objects oscillating in isotopically pure superfluid ⁴He in the T → 0 limit |
| title_fullStr |
Mutual interactions between objects oscillating in isotopically pure superfluid ⁴He in the T → 0 limit |
| title_full_unstemmed |
Mutual interactions between objects oscillating in isotopically pure superfluid ⁴He in the T → 0 limit |
| title_sort |
mutual interactions between objects oscillating in isotopically pure superfluid ⁴he in the t → 0 limit |
| author |
Garg, D. Efimov, V.B. Giltrow, M. McClintock, P.V.E. Skrbek, L. |
| author_facet |
Garg, D. Efimov, V.B. Giltrow, M. McClintock, P.V.E. Skrbek, L. |
| topic |
К 75-летию Л.П. Межова-Деглина |
| topic_facet |
К 75-летию Л.П. Межова-Деглина |
| publishDate |
2012 |
| language |
English |
| container_title |
Физика низких температур |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| format |
Article |
| description |
We report the results of experiments to explore interactions between physically separated oscillating objects
in isotopically pure superfluid ⁴He at T ∼ 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
fd 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 fd provides evidence
for a generator critical velocity in the range 0.3 < vc₁ <1.0 cm/s for onset of the detector responses, in addition to
a second critical velocity vc₂ ∼ 13 cm/s probably corresponding to the production of quantum turbulence at the
generator. The results are discussed, but are not yet fully understood.
|
| issn |
0132-6414 |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/117921 |
| citation_txt |
Mutual interactions between objects oscillating in isotopically pure superfluid ⁴He in the T → 0 limit / D. Garg, V.B. Efimov, M. Giltrow, P.V.E. McClintock, L. Skrbek // Физика низких температур. — 2012. — Т. 38, № 11. — С. 1300–1305. — Бібліогр.: 31 назв. — англ. |
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