Energy loss of fourth sound in superfluid 3He within small pores

Yusuke Nago, C. Kato, K. Obara, H. Yano, O. Ishikawa, T. Hata

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We performed a high-sensitivity fourth sound resonance experiment for pure superfluid 3He at 29.0 bar in sintered silver powder cell to clarify the hydrodynamic property of 3He in the aerogel-sintered silver system. We discuss the energy loss of fourth sound. An anomaly in the energy loss at the AB phase transition as found in the aerogel system was not observed. Our analysis shows that the energy loss Q -1, which monotonically decreases with decreasing temperature, can be understood by the hydrodynamic theory in the B phase qualitatively and quantitatively. We estimated the effective pore radius R in the powder cell.

Original languageEnglish
Pages (from-to)476-481
Number of pages6
JournalJournal of Low Temperature Physics
Volume150
Issue number3-4
DOIs
Publication statusPublished - 2008 Feb

Fingerprint

Energy dissipation
Aerogels
energy dissipation
aerogels
Acoustic waves
porosity
Silver
Powders
acoustics
Hydrodynamics
hydrodynamics
silver
cells
Phase transitions
anomalies
radii
sensitivity
Experiments
Temperature
temperature

Keywords

  • Aerogel
  • Hydrodynamics
  • Restricted geometry
  • Superfluid He

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Energy loss of fourth sound in superfluid 3He within small pores. / Nago, Yusuke; Kato, C.; Obara, K.; Yano, H.; Ishikawa, O.; Hata, T.

In: Journal of Low Temperature Physics, Vol. 150, No. 3-4, 02.2008, p. 476-481.

Research output: Contribution to journalArticle

Nago, Yusuke ; Kato, C. ; Obara, K. ; Yano, H. ; Ishikawa, O. ; Hata, T. / Energy loss of fourth sound in superfluid 3He within small pores. In: Journal of Low Temperature Physics. 2008 ; Vol. 150, No. 3-4. pp. 476-481.
@article{ed48ddf3b75241a4a3db18ff946401ca,
title = "Energy loss of fourth sound in superfluid 3He within small pores",
abstract = "We performed a high-sensitivity fourth sound resonance experiment for pure superfluid 3He at 29.0 bar in sintered silver powder cell to clarify the hydrodynamic property of 3He in the aerogel-sintered silver system. We discuss the energy loss of fourth sound. An anomaly in the energy loss at the AB phase transition as found in the aerogel system was not observed. Our analysis shows that the energy loss Q -1, which monotonically decreases with decreasing temperature, can be understood by the hydrodynamic theory in the B phase qualitatively and quantitatively. We estimated the effective pore radius R in the powder cell.",
keywords = "Aerogel, Hydrodynamics, Restricted geometry, Superfluid He",
author = "Yusuke Nago and C. Kato and K. Obara and H. Yano and O. Ishikawa and T. Hata",
year = "2008",
month = "2",
doi = "10.1007/s10909-007-9580-x",
language = "English",
volume = "150",
pages = "476--481",
journal = "Journal of Low Temperature Physics",
issn = "0022-2291",
publisher = "Springer New York",
number = "3-4",

}

TY - JOUR

T1 - Energy loss of fourth sound in superfluid 3He within small pores

AU - Nago, Yusuke

AU - Kato, C.

AU - Obara, K.

AU - Yano, H.

AU - Ishikawa, O.

AU - Hata, T.

PY - 2008/2

Y1 - 2008/2

N2 - We performed a high-sensitivity fourth sound resonance experiment for pure superfluid 3He at 29.0 bar in sintered silver powder cell to clarify the hydrodynamic property of 3He in the aerogel-sintered silver system. We discuss the energy loss of fourth sound. An anomaly in the energy loss at the AB phase transition as found in the aerogel system was not observed. Our analysis shows that the energy loss Q -1, which monotonically decreases with decreasing temperature, can be understood by the hydrodynamic theory in the B phase qualitatively and quantitatively. We estimated the effective pore radius R in the powder cell.

AB - We performed a high-sensitivity fourth sound resonance experiment for pure superfluid 3He at 29.0 bar in sintered silver powder cell to clarify the hydrodynamic property of 3He in the aerogel-sintered silver system. We discuss the energy loss of fourth sound. An anomaly in the energy loss at the AB phase transition as found in the aerogel system was not observed. Our analysis shows that the energy loss Q -1, which monotonically decreases with decreasing temperature, can be understood by the hydrodynamic theory in the B phase qualitatively and quantitatively. We estimated the effective pore radius R in the powder cell.

KW - Aerogel

KW - Hydrodynamics

KW - Restricted geometry

KW - Superfluid He

UR - http://www.scopus.com/inward/record.url?scp=38549083228&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=38549083228&partnerID=8YFLogxK

U2 - 10.1007/s10909-007-9580-x

DO - 10.1007/s10909-007-9580-x

M3 - Article

AN - SCOPUS:38549083228

VL - 150

SP - 476

EP - 481

JO - Journal of Low Temperature Physics

JF - Journal of Low Temperature Physics

SN - 0022-2291

IS - 3-4

ER -