On the effect of superfluid flows on the interaction of microwaves with He II
The paper proposes a possible mechanism of interaction of microwaves with superfluid helium that results in an experimentally observed narrow peak of microwave absorption on the frequencies by the order of the roton frequency. The obtained microwave photon absorption coefficient depends on the local...
Збережено в:
| Дата: | 2012 |
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| Автори: | , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Інститут фізики конденсованих систем НАН України
2012
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| Назва видання: | Condensed Matter Physics |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/120302 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | On the effect of superfluid flows on the interaction of microwaves with He II / V.D. Khodusov, A.S. Naumovets // Condensed Matter Physics. — 2012. — Т. 15, № 4. — С. 43601:1-4. — Бібліогр.: 21 назв. — англ. |
Репозитарії
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irk-123456789-1203022017-06-12T03:04:42Z On the effect of superfluid flows on the interaction of microwaves with He II Khodusov, V.D. Naumovets, A.S. The paper proposes a possible mechanism of interaction of microwaves with superfluid helium that results in an experimentally observed narrow peak of microwave absorption on the frequencies by the order of the roton frequency. The obtained microwave photon absorption coefficient depends on the local equilibrium distribution function which is established due to fast roton-roton and roton-phonon interactions. With the availability of superfluid flows, the local equilibrium distribution function depends on their velocity. The critical velocity of the flows, at which the absorption of microwaves is replaced by their radiation, is found. В роботi запропоновано механiзм взаємодiї надвисокочастотних хвиль iз надплинним гелiєм, який пояснює експериментально спостережуваний вузький пiк поглинання надвисокочастотних хвиль з частотою порядку ротонної частоти. Отриманий коефiцiєнт поглинання надвисокочастотних фотонiв залежить вiд локально-рiвноважної функцiї розподiлу, яка встановлюється завдяки швидких ротон-ротонних та ротон-фононних взаємодiй. При наявностi надплинних потокiв, локально-рiвноважна функцiя розподiлу залежить вiд їхньої швидкостi. Отримано критичну швидкiсть потокiв, за якої поглинання надвисокочастотних хвиль змiнюється на їхнє випромiнювання. 2012 Article On the effect of superfluid flows on the interaction of microwaves with He II / V.D. Khodusov, A.S. Naumovets // Condensed Matter Physics. — 2012. — Т. 15, № 4. — С. 43601:1-4. — Бібліогр.: 21 назв. — англ. PACS: 67.25.du, 67.30.eh, 67.25.dt DOI:10.5488/CMP.15.43601 arXiv:1212.6346 http://dspace.nbuv.gov.ua/handle/123456789/120302 en Condensed Matter Physics Інститут фізики конденсованих систем НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| description |
The paper proposes a possible mechanism of interaction of microwaves with superfluid helium that results in an experimentally observed narrow peak of microwave absorption on the frequencies by the order of the roton frequency. The obtained microwave photon absorption coefficient depends on the local equilibrium distribution function which is established due to fast roton-roton and roton-phonon interactions. With the availability of superfluid flows, the local equilibrium distribution function depends on their velocity. The critical velocity of the flows, at which the absorption of microwaves is replaced by their radiation, is found. |
| format |
Article |
| author |
Khodusov, V.D. Naumovets, A.S. |
| spellingShingle |
Khodusov, V.D. Naumovets, A.S. On the effect of superfluid flows on the interaction of microwaves with He II Condensed Matter Physics |
| author_facet |
Khodusov, V.D. Naumovets, A.S. |
| author_sort |
Khodusov, V.D. |
| title |
On the effect of superfluid flows on the interaction of microwaves with He II |
| title_short |
On the effect of superfluid flows on the interaction of microwaves with He II |
| title_full |
On the effect of superfluid flows on the interaction of microwaves with He II |
| title_fullStr |
On the effect of superfluid flows on the interaction of microwaves with He II |
| title_full_unstemmed |
On the effect of superfluid flows on the interaction of microwaves with He II |
| title_sort |
on the effect of superfluid flows on the interaction of microwaves with he ii |
| publisher |
Інститут фізики конденсованих систем НАН України |
| publishDate |
2012 |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/120302 |
| citation_txt |
On the effect of superfluid flows on the interaction of microwaves with He II / V.D. Khodusov, A.S. Naumovets // Condensed Matter Physics. — 2012. — Т. 15, № 4. — С. 43601:1-4. — Бібліогр.: 21 назв. — англ. |
| series |
Condensed Matter Physics |
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2023-10-18T20:36:40Z |
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2023-10-18T20:36:40Z |
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