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

dc.contributor.author	Zadorozhko, A.A.
dc.contributor.author	Chagovets, V.K.
dc.contributor.author	Rudavskii, E.Ya.
dc.contributor.author	Sheshin, G.A.
dc.contributor.author	Kekutia, Sh.E.
dc.contributor.author	Chkhaidze, N.D.
dc.contributor.author	Mulders, N.
dc.date.accessioned	2017-05-23T10:41:26Z
dc.date.available	2017-05-23T10:41:26Z
dc.date.issued	2009
dc.identifier.citation	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.	uk_UA
dc.identifier.issn	0132-6414
dc.identifier.other	PACS: 67.25.dg–
dc.identifier.uri	http://dspace.nbuv.gov.ua/handle/123456789/117405
dc.description.abstract	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.	uk_UA
dc.description.sponsorship	The work is partially supported with a STCU grant (Project 3718).	uk_UA
dc.language.iso	en	uk_UA
dc.publisher	Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України	uk_UA
dc.relation.ispartof	Физика низких температур
dc.subject	Квантовые жидкости и квантовые кpисталлы	uk_UA
dc.title	The features of the collective modes in aerogels filled with superfluid helium	uk_UA
dc.type	Article	uk_UA
dc.status	published earlier	uk_UA