Group Velocity in Strongly Scattering Media
Investigation of the ballistic propagation of acoustic waves through a resonantly scattering, inhomogeneous medium indicates that although the ballistic signal remains coherent with the incident pulse, it is nevertheless strongly affected by scattering resonances. These resonances cause considerable...
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| Veröffentlicht in: | Science (American Association for the Advancement of Science) 1996-02, Vol.271 (5249), p.634-637 |
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| container_issue | 5249 |
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| container_title | Science (American Association for the Advancement of Science) |
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| creator | Page, J. H. Sheng, Ping Schriemer, H. P. Jones, I. Jing, Xiaodun Weitz, D. A. |
| description | Investigation of the ballistic propagation of acoustic waves through a resonantly scattering, inhomogeneous medium indicates that although the ballistic signal remains coherent with the incident pulse, it is nevertheless strongly affected by scattering resonances. These resonances cause considerable frequency dispersion and substantially reduce the phase and group velocities. The experimental data are quantitatively described by a theoretical model that correctly accounts for the coupling between the resonant scatterers, leading to an effective renormalization of the scattering within the medium. This approach resolves a long-standing problem in the definition of the group velocity in strongly scattering materials. |
| doi_str_mv | 10.1126/science.271.5249.634 |
| format | Article |
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H. ; Sheng, Ping ; Schriemer, H. P. ; Jones, I. ; Jing, Xiaodun ; Weitz, D. A.</creator><creatorcontrib>Page, J. H. ; Sheng, Ping ; Schriemer, H. P. ; Jones, I. ; Jing, Xiaodun ; Weitz, D. A.</creatorcontrib><description>Investigation of the ballistic propagation of acoustic waves through a resonantly scattering, inhomogeneous medium indicates that although the ballistic signal remains coherent with the incident pulse, it is nevertheless strongly affected by scattering resonances. These resonances cause considerable frequency dispersion and substantially reduce the phase and group velocities. The experimental data are quantitatively described by a theoretical model that correctly accounts for the coupling between the resonant scatterers, leading to an effective renormalization of the scattering within the medium. This approach resolves a long-standing problem in the definition of the group velocity in strongly scattering materials.</description><identifier>ISSN: 0036-8075</identifier><identifier>EISSN: 1095-9203</identifier><identifier>DOI: 10.1126/science.271.5249.634</identifier><identifier>CODEN: SCIEAS</identifier><language>eng</language><publisher>Washington, DC: American Society for the Advancement of Science</publisher><subject>Acoustics ; Ballistics ; Exact sciences and technology ; Fundamental areas of phenomenology (including applications) ; Group velocity ; Motion ; Phase velocity ; Physics ; Radio scattering ; Radio transmission ; Resonance ; Resonance scattering ; Solid mechanics ; Sound propagation ; Sound waves ; Speed ; Structural acoustics and vibration ; Structural and continuum mechanics ; Ultrasonic waves ; Ultrasound ; Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...) ; Vibrations and mechanical waves ; Water ; Wave propagation ; Waves</subject><ispartof>Science (American Association for the Advancement of Science), 1996-02, Vol.271 (5249), p.634-637</ispartof><rights>Copyright 1996 American Association for the Advancement of Science</rights><rights>1996 INIST-CNRS</rights><rights>COPYRIGHT 1996 American Association for the Advancement of Science</rights><rights>COPYRIGHT 1996 American Association for the Advancement of Science</rights><rights>Copyright American Association for the Advancement of Science Feb 2, 1996</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c631t-83d340200e2f9d101ee6acddd6d42ccd833cc448858172e5c9db6d566c454fa03</citedby><cites>FETCH-LOGICAL-c631t-83d340200e2f9d101ee6acddd6d42ccd833cc448858172e5c9db6d566c454fa03</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/2889684$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/2889684$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,776,780,799,2871,2872,27901,27902,57992,58225</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=2986048$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Page, J. 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The experimental data are quantitatively described by a theoretical model that correctly accounts for the coupling between the resonant scatterers, leading to an effective renormalization of the scattering within the medium. This approach resolves a long-standing problem in the definition of the group velocity in strongly scattering materials.</description><subject>Acoustics</subject><subject>Ballistics</subject><subject>Exact sciences and technology</subject><subject>Fundamental areas of phenomenology (including applications)</subject><subject>Group velocity</subject><subject>Motion</subject><subject>Phase velocity</subject><subject>Physics</subject><subject>Radio scattering</subject><subject>Radio transmission</subject><subject>Resonance</subject><subject>Resonance scattering</subject><subject>Solid mechanics</subject><subject>Sound propagation</subject><subject>Sound waves</subject><subject>Speed</subject><subject>Structural acoustics and vibration</subject><subject>Structural and continuum mechanics</subject><subject>Ultrasonic waves</subject><subject>Ultrasound</subject><subject>Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...)</subject><subject>Vibrations and mechanical waves</subject><subject>Water</subject><subject>Wave propagation</subject><subject>Waves</subject><issn>0036-8075</issn><issn>1095-9203</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1996</creationdate><recordtype>article</recordtype><sourceid>8G5</sourceid><sourceid>BEC</sourceid><sourceid>BENPR</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNqN0s-LEzEUB_BBFKyr_8EeiogIu1OTyY9JjmtZ60K1h-peQ0zeDClpUpMZsP-9WVqUSg8lh0De54UH71tV1xjNMG74x2wcBAOzpsUz1lA544Q-qyYYSVbLBpHn1QQhwmuBWvayepXzBqFSk2RS3SxSHHfTR_DRuGE_dWG6HlIMvd9P10YPAyQX-ulXsE6_rl502md4c7yvqh-f77_Pv9TL1eJhfresDSd4qAWxhKIGIWg6aTHCAFwbay23tDHGCkKMoVQIJnDbADPS_uSWcW4oo51G5Kp6f_h3l-KvEfKgti4b8F4HiGNWhGHJmKQFvv0PbuKYQplNNZgw3lLeFnR7QL32oFzo4pC06SFA0j4G6Fx5vsMCISFaXHh9hpdjYevMOf_hxBcywO-h12PO6mH97WK6eryYflpcSsVieUJvz1ETvYceVFnifHXC6YGbFHNO0Kldclud9goj9RQ8dQyeKsFTT8FTJXil7d1xKzob7bukg3H5b28jBUdUFHZ9YJs8xPSvLITkgpI_kibdBg</recordid><startdate>19960202</startdate><enddate>19960202</enddate><creator>Page, J. 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H.</au><au>Sheng, Ping</au><au>Schriemer, H. P.</au><au>Jones, I.</au><au>Jing, Xiaodun</au><au>Weitz, D. A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Group Velocity in Strongly Scattering Media</atitle><jtitle>Science (American Association for the Advancement of Science)</jtitle><addtitle>Science</addtitle><date>1996-02-02</date><risdate>1996</risdate><volume>271</volume><issue>5249</issue><spage>634</spage><epage>637</epage><pages>634-637</pages><issn>0036-8075</issn><eissn>1095-9203</eissn><coden>SCIEAS</coden><abstract>Investigation of the ballistic propagation of acoustic waves through a resonantly scattering, inhomogeneous medium indicates that although the ballistic signal remains coherent with the incident pulse, it is nevertheless strongly affected by scattering resonances. These resonances cause considerable frequency dispersion and substantially reduce the phase and group velocities. The experimental data are quantitatively described by a theoretical model that correctly accounts for the coupling between the resonant scatterers, leading to an effective renormalization of the scattering within the medium. This approach resolves a long-standing problem in the definition of the group velocity in strongly scattering materials.</abstract><cop>Washington, DC</cop><pub>American Society for the Advancement of Science</pub><doi>10.1126/science.271.5249.634</doi><tpages>4</tpages></addata></record> |
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| ispartof | Science (American Association for the Advancement of Science), 1996-02, Vol.271 (5249), p.634-637 |
| issn | 0036-8075 1095-9203 |
| language | eng |
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| source | American Association for the Advancement of Science; Jstor Complete Legacy |
| subjects | Acoustics Ballistics Exact sciences and technology Fundamental areas of phenomenology (including applications) Group velocity Motion Phase velocity Physics Radio scattering Radio transmission Resonance Resonance scattering Solid mechanics Sound propagation Sound waves Speed Structural acoustics and vibration Structural and continuum mechanics Ultrasonic waves Ultrasound Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...) Vibrations and mechanical waves Water Wave propagation Waves |
| title | Group Velocity in Strongly Scattering Media |
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