The features of the collective modes in aerogels filled with superfluid helium
The velocity of fast and slow collective modes of 90, 94 and 98% porosity aerogels filled with superfluid helium were measured by means of low-frequency resonant technique at temperatures 0.5–2.5 K. The temperature dependences of velocities of both modes are compared with the hydrodynamic theory whi...
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2009
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| Schriftenreihe: | Физика низких температур |
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| Zitieren: | The features of the collective modes in aerogels filled with superfluid helium / A.A. Zadorozhko, V.K. Chagovets, E.Ya. Rudavskii, G.A. Sheshin, Sh.E. Kekutia, N.D. Chkhaidze, N. Mulders // Физика низких температур. — 2009. — Т. 35, № 10. — С. 962-967. — Бібліогр.: 14 назв. — англ. |
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irk-123456789-1174052017-05-24T03:03:36Z The features of the collective modes in aerogels filled with superfluid helium Zadorozhko, A.A. Chagovets, V.K. Rudavskii, E.Ya. Sheshin, G.A. Kekutia, Sh.E. Chkhaidze, N.D. Mulders, N. Квантовые жидкости и квантовые кpисталлы The velocity of fast and slow collective modes of 90, 94 and 98% porosity aerogels filled with superfluid helium were measured by means of low-frequency resonant technique at temperatures 0.5–2.5 K. The temperature dependences of velocities of both modes are compared with the hydrodynamic theory which was modified taking into account the mobility of the aerogel matrix, porosity of media and tortuosity of an acoustic way. It has been found that the fast and slow modes in an aerogel are coupled much stronger than the first and second sounds in bulk He II. 2009 Article The features of the collective modes in aerogels filled with superfluid helium / A.A. Zadorozhko, V.K. Chagovets, E.Ya. Rudavskii, G.A. Sheshin, Sh.E. Kekutia, N.D. Chkhaidze, N. Mulders // Физика низких температур. — 2009. — Т. 35, № 10. — С. 962-967. — Бібліогр.: 14 назв. — англ. 0132-6414 PACS: 67.25.dg– http://dspace.nbuv.gov.ua/handle/123456789/117405 en Физика низких температур Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| topic |
Квантовые жидкости и квантовые кpисталлы Квантовые жидкости и квантовые кpисталлы |
| spellingShingle |
Квантовые жидкости и квантовые кpисталлы Квантовые жидкости и квантовые кpисталлы Zadorozhko, A.A. Chagovets, V.K. Rudavskii, E.Ya. Sheshin, G.A. Kekutia, Sh.E. Chkhaidze, N.D. Mulders, N. The features of the collective modes in aerogels filled with superfluid helium Физика низких температур |
| description |
The velocity of fast and slow collective modes of 90, 94 and 98% porosity aerogels filled with superfluid helium were measured by means of low-frequency resonant technique at temperatures 0.5–2.5 K. The temperature dependences of velocities of both modes are compared with the hydrodynamic theory which was modified taking into account the mobility of the aerogel matrix, porosity of media and tortuosity of an acoustic way. It has been found that the fast and slow modes in an aerogel are coupled much stronger than the first and second sounds in bulk He II. |
| format |
Article |
| author |
Zadorozhko, A.A. Chagovets, V.K. Rudavskii, E.Ya. Sheshin, G.A. Kekutia, Sh.E. Chkhaidze, N.D. Mulders, N. |
| author_facet |
Zadorozhko, A.A. Chagovets, V.K. Rudavskii, E.Ya. Sheshin, G.A. Kekutia, Sh.E. Chkhaidze, N.D. Mulders, N. |
| author_sort |
Zadorozhko, A.A. |
| title |
The features of the collective modes in aerogels filled with superfluid helium |
| title_short |
The features of the collective modes in aerogels filled with superfluid helium |
| title_full |
The features of the collective modes in aerogels filled with superfluid helium |
| title_fullStr |
The features of the collective modes in aerogels filled with superfluid helium |
| title_full_unstemmed |
The features of the collective modes in aerogels filled with superfluid helium |
| title_sort |
features of the collective modes in aerogels filled with superfluid helium |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| publishDate |
2009 |
| topic_facet |
Квантовые жидкости и квантовые кpисталлы |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/117405 |
| citation_txt |
The features of the collective modes in aerogels filled with superfluid helium / A.A. Zadorozhko, V.K. Chagovets, E.Ya. Rudavskii, G.A. Sheshin, Sh.E. Kekutia, N.D. Chkhaidze, N. Mulders // Физика низких температур. — 2009. — Т. 35, № 10. — С. 962-967. — Бібліогр.: 14 назв. — англ. |
| series |
Физика низких температур |
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