CAN SOUND BE LOCALIZED IN GRANULAR MEDIA

Citation
Sc. Feng et D. Sornette, CAN SOUND BE LOCALIZED IN GRANULAR MEDIA, Physics letters. A, 184(1), 1993, pp. 127-130
Citations number
11
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
ISSN journal
0375-9601
Volume
184
Issue
1
Year of publication
1993
Pages
127 - 130
Database
ISI
SICI code
0375-9601(1993)184:1<127:CSBLIG>2.0.ZU;2-J
Abstract
Liu and Nagel have reported recently [Phys. Rev. Lett. 68 (1992) 2301 ] a set of measurements involving sound propagation in an unconsolidat ed granular glass beads system (an artificial ''sand''). In order to r ationalize qualitatively and quantitatively the reported results, we p ropose the physical picture that sound waves are multiply scattered at grain-grain contacts and are thus in the diffusive regime, close to A nderson localization. This suggests a deep link between the quest for experimental observation of strong localization for classical waves an d the physics of unconsolidated granular media.