Запис Детальніше

The features of the collective modes in aerogels filled with superfluid helium

Vernadsky National Library of Ukraine

Переглянути архів Інформація
 
 
Поле Співвідношення
 
Title The features of the collective modes in aerogels filled with superfluid helium
 
Creator Zadorozhko, A.A.
Chagovets, V.K.
Rudavskii, E.Ya.
Sheshin, G.A.
Kekutia, Sh.E.
Chkhaidze, N.D.
Mulders, N.
 
Subject Квантовые жидкости и квантовые кpисталлы
 
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.
 
Date 2017-05-23T10:41:26Z
2017-05-23T10:41:26Z
2009
 
Type Article
 
Identifier 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
 
Language en
 
Relation Физика низких температур
 
Publisher Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України