Fourth Sound Measurement of Superfluid He in Aerogel

The fourth sound resonance experiment has been done on liquid He in 98.5% porosity aerogel. Aerogel was grown inside the pores among the sintered silver powder to avoid the vibration of the aerogel strands by the sound experiment. The measurement was performed at zero magnetic field and 27 bar. We o...

Full description

Saved in:
Bibliographic Details
Published inJournal of low temperature physics Vol. 148; no. 5-6; pp. 597 - 601
Main Authors Nago, Y, Obara, K, Kado, R, Yano, H, Ishikawa, O, Hata, T
Format Journal Article
LanguageEnglish
Published 01.09.2007
Online AccessGet full text

Cover

More Information
Summary:The fourth sound resonance experiment has been done on liquid He in 98.5% porosity aerogel. Aerogel was grown inside the pores among the sintered silver powder to avoid the vibration of the aerogel strands by the sound experiment. The measurement was performed at zero magnetic field and 27 bar. We observed the phase transition between the A-like and B-like phases and also their coexistent state. The A-like to B-like phase transition occurs not at a temperature but within a temperature band. In this band, the A-like phase gradually converts to the B-like phase. Possible picture of the coexistent state is discussed.
Bibliography:SourceType-Scholarly Journals-2
ObjectType-Feature-2
ObjectType-Conference Paper-1
content type line 23
SourceType-Conference Papers & Proceedings-1
ObjectType-Article-3
ISSN:0022-2291
DOI:10.1007/s10909-007-9455-1