On the suprathermal distribution in an anisotropic phonon system in He II
The equation that describes the suprathermal distribution of high-energy phonons (h phonons) created in anisotropic phonon systems in superfluid helium is obtained. The solution of this equation enables the derivation of the value of suprathermal ratio S as the ratio of the actual distribution to th...
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| Опубліковано в: : | Физика низких температур |
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| Дата: | 2003 |
| Автори: | , , |
| Формат: | Стаття |
| Мова: | Англійська |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2003
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| Онлайн доступ: | https://nasplib.isofts.kiev.ua/handle/123456789/128779 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | On the suprathermal distribution in an anisotropic phonon system in He II / I.N. Adamenko, K.E. Nemchenko, A.F. G. Wyatt // Физика низких температур. — 2003. — Т. 29, № 1. — С. 16-21. — Бібліогр.: 28 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862702637668892672 |
|---|---|
| author | Adamenko, I.N. Nemchenko, K.E. G.Wyatt, A.F. |
| author_facet | Adamenko, I.N. Nemchenko, K.E. G.Wyatt, A.F. |
| citation_txt | On the suprathermal distribution in an anisotropic phonon system in He II / I.N. Adamenko, K.E. Nemchenko, A.F. G. Wyatt // Физика низких температур. — 2003. — Т. 29, № 1. — С. 16-21. — Бібліогр.: 28 назв. — англ. |
| collection | DSpace DC |
| container_title | Физика низких температур |
| description | The equation that describes the suprathermal distribution of high-energy phonons (h phonons) created in anisotropic phonon systems in superfluid helium is obtained. The solution of this equation enables the derivation of the value of suprathermal ratio S as the ratio of the actual distribution to the Bose-Einstein one, its dependences on the momentum of the h phonons, the anisotropy parameters, and the temperature of the low-energy phonons from which the h phonons are created. We analyze this equation to obtain an estimate of the value of the ratio between the h-phonon number density in anisotropic and isotropic phonon systems and draw conclusions about the dependence of S on the relevant parameters.
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| first_indexed | 2025-12-07T16:45:53Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-128779 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-12-07T16:45:53Z |
| publishDate | 2003 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| record_format | dspace |
| spelling | Adamenko, I.N. Nemchenko, K.E. G.Wyatt, A.F. 2018-01-13T19:49:20Z 2018-01-13T19:49:20Z 2003 On the suprathermal distribution in an anisotropic phonon system in He II / I.N. Adamenko, K.E. Nemchenko, A.F. G. Wyatt // Физика низких температур. — 2003. — Т. 29, № 1. — С. 16-21. — Бібліогр.: 28 назв. — англ. 0132-6414 PACS: 67.40.Db, 67.40.Fd https://nasplib.isofts.kiev.ua/handle/123456789/128779 The equation that describes the suprathermal distribution of high-energy phonons (h phonons) created in anisotropic phonon systems in superfluid helium is obtained. The solution of this equation enables the derivation of the value of suprathermal ratio S as the ratio of the actual distribution to the Bose-Einstein one, its dependences on the momentum of the h phonons, the anisotropy parameters, and the temperature of the low-energy phonons from which the h phonons are created. We analyze this equation to obtain an estimate of the value of the ratio between the h-phonon number density in anisotropic and isotropic phonon systems and draw conclusions about the dependence of S on the relevant parameters. We express our gratitude to EPSRC of the UK (grant GR/N18796 and GR/N20225), and to GFFI of Ukraine (grant N02.07/000372) for support for this work. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Квантовые жидкости и квантовые кpисталлы On the suprathermal distribution in an anisotropic phonon system in He II Article published earlier |
| spellingShingle | On the suprathermal distribution in an anisotropic phonon system in He II Adamenko, I.N. Nemchenko, K.E. G.Wyatt, A.F. Квантовые жидкости и квантовые кpисталлы |
| title | On the suprathermal distribution in an anisotropic phonon system in He II |
| title_full | On the suprathermal distribution in an anisotropic phonon system in He II |
| title_fullStr | On the suprathermal distribution in an anisotropic phonon system in He II |
| title_full_unstemmed | On the suprathermal distribution in an anisotropic phonon system in He II |
| title_short | On the suprathermal distribution in an anisotropic phonon system in He II |
| title_sort | on the suprathermal distribution in an anisotropic phonon system in he ii |
| topic | Квантовые жидкости и квантовые кpисталлы |
| topic_facet | Квантовые жидкости и квантовые кpисталлы |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/128779 |
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