Viscosity and ultrasonic attenuation in ⁴He below 0.6 K
Through a treatment of three-phonon processes, the wide-angle scattering rates and the absorption rates of phonons, which characterize viscosity and ultrasonic attenuation, respectively, are calculated for ⁴He below 0.6 K. These rates are obtained from the collision matrix which is constructed appro...
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| Published in: | Физика низких температур |
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| Date: | 1997 |
| Main Authors: | , , , , |
| Format: | Article |
| Language: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
1997
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| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/175461 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Viscosity and ultrasonic attenuation in ⁴He below 0.6 K / Chung-In Um, Soo-Young Lee, Sahng-Kyoon Yoo, T.F. George, L.N. Pandey and I.N. Adamenko // Физика низких температур. — 1997. — Т. 23, № 5-6. — С. 537-545. — Бібліогр.: 15 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1859951571907903488 |
|---|---|
| author | Chung-ln Um Soo-Young Lee George, T.F. Pandey, L.N. Adamenko, I.N. |
| author_facet | Chung-ln Um Soo-Young Lee George, T.F. Pandey, L.N. Adamenko, I.N. |
| citation_txt | Viscosity and ultrasonic attenuation in ⁴He below 0.6 K / Chung-In Um, Soo-Young Lee, Sahng-Kyoon Yoo, T.F. George, L.N. Pandey and I.N. Adamenko // Физика низких температур. — 1997. — Т. 23, № 5-6. — С. 537-545. — Бібліогр.: 15 назв. — англ. |
| collection | DSpace DC |
| container_title | Физика низких температур |
| description | Through a treatment of three-phonon processes, the wide-angle scattering rates and the absorption rates of phonons, which characterize viscosity and ultrasonic attenuation, respectively, are calculated for ⁴He below 0.6 K. These rates are obtained from the collision matrix which is constructed approximately from an integral eigenvalue equation for the collision operator. The sequence of the lowest eigenvalues of the collision matrix as the angular momentum quantum number (l) increases shows a saturated behavior which has not been reported before. The calculated viscosity and ultrasonic attenuation are compared with previous theoretical and experimental results.
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| first_indexed | 2025-12-07T16:17:23Z |
| format | Article |
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| id | nasplib_isofts_kiev_ua-123456789-175461 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-12-07T16:17:23Z |
| publishDate | 1997 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| record_format | dspace |
| spelling | Chung-ln Um Soo-Young Lee George, T.F. Pandey, L.N. Adamenko, I.N. 2021-02-01T14:45:14Z 2021-02-01T14:45:14Z 1997 Viscosity and ultrasonic attenuation in ⁴He below 0.6 K / Chung-In Um, Soo-Young Lee, Sahng-Kyoon Yoo, T.F. George, L.N. Pandey and I.N. Adamenko // Физика низких температур. — 1997. — Т. 23, № 5-6. — С. 537-545. — Бібліогр.: 15 назв. — англ. 0132-6414 PACS: 67.40.Pm https://nasplib.isofts.kiev.ua/handle/123456789/175461 Through a treatment of three-phonon processes, the wide-angle scattering rates and the absorption rates of phonons, which characterize viscosity and ultrasonic attenuation, respectively, are calculated for ⁴He below 0.6 K. These rates are obtained from the collision matrix which is constructed approximately from an integral eigenvalue equation for the collision operator. The sequence of the lowest eigenvalues of the collision matrix as the angular momentum quantum number (l) increases shows a saturated behavior which has not been reported before. The calculated viscosity and ultrasonic attenuation are compared with previous theoretical and experimental results. This work was supported bу the Research Institute of Basic Science in Korea University and Nondirected Research Fund, Korea Research Foundation, 1995. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Квантовые жидкости и квантовые кpисталлы Viscosity and ultrasonic attenuation in ⁴He below 0.6 K Article published earlier |
| spellingShingle | Viscosity and ultrasonic attenuation in ⁴He below 0.6 K Chung-ln Um Soo-Young Lee George, T.F. Pandey, L.N. Adamenko, I.N. Квантовые жидкости и квантовые кpисталлы |
| title | Viscosity and ultrasonic attenuation in ⁴He below 0.6 K |
| title_full | Viscosity and ultrasonic attenuation in ⁴He below 0.6 K |
| title_fullStr | Viscosity and ultrasonic attenuation in ⁴He below 0.6 K |
| title_full_unstemmed | Viscosity and ultrasonic attenuation in ⁴He below 0.6 K |
| title_short | Viscosity and ultrasonic attenuation in ⁴He below 0.6 K |
| title_sort | viscosity and ultrasonic attenuation in ⁴he below 0.6 k |
| topic | Квантовые жидкости и квантовые кpисталлы |
| topic_facet | Квантовые жидкости и квантовые кpисталлы |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/175461 |
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