Ultrasonic experiments on rotating superfluid 3HeA1

K. Torizuka; J. P. Pekola; J. M. Kyynäräinen; A. J. Manninen; O. V. Lounasmaa; G. K. Tvalashvili

doi:10.1016/S0921-4526(90)81161-G

Ultrasonic experiments on rotating superfluid ³HeA₁

K. Torizuka, J. P. Pekola, J. M. Kyynäräinen, A. J. Manninen, O. V. Lounasmaa, G. K. Tvalashvili

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Abstract

The first experiments on rotating ³HeA₁ have been done using pulsed zero sound transmission techniques at several pressures in magnetic fields up to 1 T. Preliminary analysis of our data by a geometrical acoustics method suggests that the vortex cores in ³HeA₁ are larger than in ³HeA₂. This result is based on the strong and highly non-linear rotation dependence of sound attenuation in ³HeA_l. Conclusions about the type of vortices in ³HeA₁ cannot be made at present owing to lack of theory.

Original language	English
Pages (from-to)	623-624
Number of pages	2
Journal	Physica B: Physics of Condensed Matter
Volume	165-166
Issue number	PART 1
DOIs	https://doi.org/10.1016/S0921-4526(90)81161-G
Publication status	Published - Aug 1990
MoE publication type	A1 Journal article-refereed

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title = "Ultrasonic experiments on rotating superfluid 3HeA1",

abstract = "The first experiments on rotating 3HeA1 have been done using pulsed zero sound transmission techniques at several pressures in magnetic fields up to 1 T. Preliminary analysis of our data by a geometrical acoustics method suggests that the vortex cores in 3HeA1 are larger than in 3HeA2. This result is based on the strong and highly non-linear rotation dependence of sound attenuation in 3HeAl. Conclusions about the type of vortices in 3HeA1 cannot be made at present owing to lack of theory.",

author = "K. Torizuka and Pekola, {J. P.} and Kyyn{\"a}r{\"a}inen, {J. M.} and Manninen, {A. J.} and Lounasmaa, {O. V.} and Tvalashvili, {G. K.}",

year = "1990",

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doi = "10.1016/S0921-4526(90)81161-G",

language = "English",

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T1 - Ultrasonic experiments on rotating superfluid 3HeA1

AU - Torizuka, K.

AU - Pekola, J. P.

AU - Kyynäräinen, J. M.

AU - Manninen, A. J.

AU - Lounasmaa, O. V.

AU - Tvalashvili, G. K.

PY - 1990/8

Y1 - 1990/8

N2 - The first experiments on rotating 3HeA1 have been done using pulsed zero sound transmission techniques at several pressures in magnetic fields up to 1 T. Preliminary analysis of our data by a geometrical acoustics method suggests that the vortex cores in 3HeA1 are larger than in 3HeA2. This result is based on the strong and highly non-linear rotation dependence of sound attenuation in 3HeAl. Conclusions about the type of vortices in 3HeA1 cannot be made at present owing to lack of theory.

AB - The first experiments on rotating 3HeA1 have been done using pulsed zero sound transmission techniques at several pressures in magnetic fields up to 1 T. Preliminary analysis of our data by a geometrical acoustics method suggests that the vortex cores in 3HeA1 are larger than in 3HeA2. This result is based on the strong and highly non-linear rotation dependence of sound attenuation in 3HeAl. Conclusions about the type of vortices in 3HeA1 cannot be made at present owing to lack of theory.

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DO - 10.1016/S0921-4526(90)81161-G

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EP - 624

JO - Physica B: Physics of Condensed Matter

JF - Physica B: Physics of Condensed Matter

IS - PART 1

ER -

Ultrasonic experiments on rotating superfluid ³HeA₁

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