Электронный архив

Frequency dependence of fast mode ultrasound attenuation of liquid 4He in aerogel

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dc.contributor.author Matsumoto K.
dc.contributor.author Tsuboya H.
dc.contributor.author Ohmori K.
dc.contributor.author Abe S.
dc.contributor.author Suzuki H.
dc.contributor.author Tayurskii D.
dc.date.accessioned 2018-09-18T20:24:30Z
dc.date.available 2018-09-18T20:24:30Z
dc.date.issued 2009
dc.identifier.issn 1742-6588
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/139570
dc.description.abstract In our previous work, anomalous sound attenuation in superfluid phase was observed in liquid 4He filled in 97.0 % porous aerogel using longitudinal ultrasound at the frequency of 10 MHz. To understand the nature of the observed anomaly one needs to know the viscous coupling between normal component and aerogel strands. As far as the viscous penetration depth depends on frequency in the present work we have measured longitudinal ultrasound propagation in liquid 4He filled in 97.0 % porous aerogel at the frequencies 6, 10, and 15 MHz. In the normal phase the sound velocity had no frequency dependence and was reduced from that of bulk liquid, since the sound velocity in aerogel is smaller than in bulk liquid helium. The attenuation in normal phase is discussed using a viscoelastic theory. The obtained results indicated that the ultrasound experiment in normal phase was performed in low frequency or crossover regime. © 2009 IOP Publishing Ltd.
dc.relation.ispartofseries Journal of Physics: Conference Series
dc.title Frequency dependence of fast mode ultrasound attenuation of liquid 4He in aerogel
dc.type Conference Paper
dc.relation.ispartofseries-issue 3
dc.relation.ispartofseries-volume 150
dc.collection Публикации сотрудников КФУ
dc.source.id SCOPUS17426588-2009-150-3-SID77952486789


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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