Observation of a second-sound-like mode in superfluid-filled aerogel
Superfluid {sup 4}He is interesting acoustically because it can support more than one mode of sound propagation, and these can be used to study critical properties. Recently, there has been interest in superfluid-filled aerogels, but for such compressible materials one does not observe the ordinary...
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| Veröffentlicht in: | Physical review letters 1991-04, Vol.66 (14), p.1878-1881 |
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| container_end_page | 1881 |
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| container_issue | 14 |
| container_start_page | 1878 |
| container_title | Physical review letters |
| container_volume | 66 |
| creator | MCKENNA, M. J SLAWECKI, T MAYNARD, J. D |
| description | Superfluid {sup 4}He is interesting acoustically because it can support more than one mode of sound propagation, and these can be used to study critical properties. Recently, there has been interest in superfluid-filled aerogels, but for such compressible materials one does not observe the ordinary (fourth) sound; instead there is a mode intermediate between first and fourth sound and a second-sound-like mode. We present a theory for the modes and the first observation of the aerogel second-sound-like mode, which is important because it propagates near the critical temperature. |
| doi_str_mv | 10.1103/physrevlett.66.1878 |
| format | Article |
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J</creatorcontrib><creatorcontrib>SLAWECKI, T</creatorcontrib><creatorcontrib>MAYNARD, J. D</creatorcontrib><title>Observation of a second-sound-like mode in superfluid-filled aerogel</title><title>Physical review letters</title><addtitle>Phys Rev Lett</addtitle><description>Superfluid {sup 4}He is interesting acoustically because it can support more than one mode of sound propagation, and these can be used to study critical properties. Recently, there has been interest in superfluid-filled aerogels, but for such compressible materials one does not observe the ordinary (fourth) sound; instead there is a mode intermediate between first and fourth sound and a second-sound-like mode. We present a theory for the modes and the first observation of the aerogel second-sound-like mode, which is important because it propagates near the critical temperature.</description><subject>Boson degeneracy and superfluidity of 4he</subject><subject>COLLOIDS</subject><subject>COMPRESSIBILITY</subject><subject>CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY</subject><subject>Condensed matter: structure, mechanical and thermal properties</subject><subject>CRITICAL TEMPERATURE</subject><subject>DATA</subject><subject>DISPERSIONS</subject><subject>EVEN-EVEN NUCLEI</subject><subject>Exact sciences and technology</subject><subject>EXPERIMENTAL DATA</subject><subject>GELS</subject><subject>HELIUM 4</subject><subject>HELIUM ISOTOPES</subject><subject>INFORMATION</subject><subject>ISOTOPES</subject><subject>LIGHT NUCLEI</subject><subject>MECHANICAL PROPERTIES</subject><subject>NUCLEI</subject><subject>NUMERICAL DATA</subject><subject>PHYSICAL PROPERTIES</subject><subject>Physics</subject><subject>Quantum fluids and solids; liquid and solid helium</subject><subject>SECOND SOUND</subject><subject>STABLE ISOTOPES</subject><subject>THEORETICAL DATA</subject><subject>THERMODYNAMIC PROPERTIES</subject><subject>TRANSITION TEMPERATURE 640450 -- Fluid Physics-- Superfluidity</subject><subject>ULTRALOW TEMPERATURE</subject><issn>0031-9007</issn><issn>1079-7114</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1991</creationdate><recordtype>article</recordtype><recordid>eNpNkE1rGzEQhkVoSZyPX1AIS6HQy7ojydJqjyVp04IhJSRnoZVGjRJ55Ui7hvz7KNjQzmHm8rwzw0PIJwpLSoF_2z6-loy7iNO0lHJJVaeOyIJC17cdpasPZAHAadsDdCfktJQnAKBMqmNyQgFWvNaCXN8OBfPOTCGNTfKNaQraNLq2pLn2GJ6x2SSHTRibMm8x-zgH1_oQI7rGYE5_MZ6Tj97EgheHeUYefv64v_rVrm9vfl99X7d2xeTUWmkZrGDwyokekQH1zkvVeaOEYdKjUQNnzA8OhLDeMkoHBHSSG8sGAfyMfN7vTWUKutgwoX2s345oJy0U76CjFfq6h7Y5vcxYJr0JxWKMZsQ0F02V6JkQjMuK8j1qcyrVpdfbHDYmv2oK-t2x_lMd3-FuXR1rKfW745q6PByYhw26_zJ7qRX4cgBMsSb6bEYbyj-ulxx60fM3GL-ICQ</recordid><startdate>19910408</startdate><enddate>19910408</enddate><creator>MCKENNA, M. 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D</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c426t-c6c2040bf8d59ee201fdf687fa85a26fea8b322fbd055cfc211be0ed63ac2b503</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1991</creationdate><topic>Boson degeneracy and superfluidity of 4he</topic><topic>COLLOIDS</topic><topic>COMPRESSIBILITY</topic><topic>CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY</topic><topic>Condensed matter: structure, mechanical and thermal properties</topic><topic>CRITICAL TEMPERATURE</topic><topic>DATA</topic><topic>DISPERSIONS</topic><topic>EVEN-EVEN NUCLEI</topic><topic>Exact sciences and technology</topic><topic>EXPERIMENTAL DATA</topic><topic>GELS</topic><topic>HELIUM 4</topic><topic>HELIUM ISOTOPES</topic><topic>INFORMATION</topic><topic>ISOTOPES</topic><topic>LIGHT NUCLEI</topic><topic>MECHANICAL PROPERTIES</topic><topic>NUCLEI</topic><topic>NUMERICAL DATA</topic><topic>PHYSICAL PROPERTIES</topic><topic>Physics</topic><topic>Quantum fluids and solids; liquid and solid helium</topic><topic>SECOND SOUND</topic><topic>STABLE ISOTOPES</topic><topic>THEORETICAL DATA</topic><topic>THERMODYNAMIC PROPERTIES</topic><topic>TRANSITION TEMPERATURE 640450 -- Fluid Physics-- Superfluidity</topic><topic>ULTRALOW TEMPERATURE</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>MCKENNA, M. J</creatorcontrib><creatorcontrib>SLAWECKI, T</creatorcontrib><creatorcontrib>MAYNARD, J. D</creatorcontrib><collection>Pascal-Francis</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>OSTI.GOV</collection><jtitle>Physical review letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>MCKENNA, M. J</au><au>SLAWECKI, T</au><au>MAYNARD, J. D</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Observation of a second-sound-like mode in superfluid-filled aerogel</atitle><jtitle>Physical review letters</jtitle><addtitle>Phys Rev Lett</addtitle><date>1991-04-08</date><risdate>1991</risdate><volume>66</volume><issue>14</issue><spage>1878</spage><epage>1881</epage><pages>1878-1881</pages><issn>0031-9007</issn><eissn>1079-7114</eissn><coden>PRLTAO</coden><abstract>Superfluid {sup 4}He is interesting acoustically because it can support more than one mode of sound propagation, and these can be used to study critical properties. Recently, there has been interest in superfluid-filled aerogels, but for such compressible materials one does not observe the ordinary (fourth) sound; instead there is a mode intermediate between first and fourth sound and a second-sound-like mode. We present a theory for the modes and the first observation of the aerogel second-sound-like mode, which is important because it propagates near the critical temperature.</abstract><cop>Ridge, NY</cop><pub>American Physical Society</pub><pmid>10043333</pmid><doi>10.1103/physrevlett.66.1878</doi><tpages>4</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0031-9007 |
| ispartof | Physical review letters, 1991-04, Vol.66 (14), p.1878-1881 |
| issn | 0031-9007 1079-7114 |
| language | eng |
| recordid | cdi_osti_scitechconnect_5837071 |
| source | American Physical Society Journals |
| subjects | Boson degeneracy and superfluidity of 4he COLLOIDS COMPRESSIBILITY CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY Condensed matter: structure, mechanical and thermal properties CRITICAL TEMPERATURE DATA DISPERSIONS EVEN-EVEN NUCLEI Exact sciences and technology EXPERIMENTAL DATA GELS HELIUM 4 HELIUM ISOTOPES INFORMATION ISOTOPES LIGHT NUCLEI MECHANICAL PROPERTIES NUCLEI NUMERICAL DATA PHYSICAL PROPERTIES Physics Quantum fluids and solids liquid and solid helium SECOND SOUND STABLE ISOTOPES THEORETICAL DATA THERMODYNAMIC PROPERTIES TRANSITION TEMPERATURE 640450 -- Fluid Physics-- Superfluidity ULTRALOW TEMPERATURE |
| title | Observation of a second-sound-like mode in superfluid-filled aerogel |
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