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

• Published in: Физика низких температур
• Date: 2009
• Main Authors: Zadorozhko, A.A., Chagovets, V.K., Rudavskii, E.Ya., Sheshin, G.A., Kekutia, Sh.E., Chkhaidze, N.D., Mulders, N.
• Format: Article
• Language: English
• Published: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2009
• Subjects: Квантовые жидкости и квантовые кpисталлы
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/117405
• 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.

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...