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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| Published in: | Физика низких температур |
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| Date: | 2009 |
| Main Authors: | , , , , , , |
| Format: | Article |
| Language: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2009
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| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/117405 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | 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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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862619628187942912 |
|---|---|
| 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. |
| 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. |
| collection | DSpace DC |
| container_title | 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.
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| first_indexed | 2025-12-07T13:18:22Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-117405 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-12-07T13:18:22Z |
| publishDate | 2009 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| record_format | dspace |
| spelling | Zadorozhko, A.A. Chagovets, V.K. Rudavskii, E.Ya. Sheshin, G.A. Kekutia, Sh.E. Chkhaidze, N.D. Mulders, N. 2017-05-23T10:41:26Z 2017-05-23T10:41:26Z 2009 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– https://nasplib.isofts.kiev.ua/handle/123456789/117405 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. The work is partially supported with a STCU grant
 (Project 3718). en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Квантовые жидкости и квантовые кpисталлы The features of the collective modes in aerogels filled with superfluid helium Article published earlier |
| spellingShingle | 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 |
| title | 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_short | 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 |
| topic | Квантовые жидкости и квантовые кpисталлы |
| topic_facet | Квантовые жидкости и квантовые кpисталлы |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/117405 |
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