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Weakly localized waves on the corrugated surface of a medium of arbitrary anisotropy
MedLine Citation:
PMID:  10830367     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The existence of weakly localized surface and pseudosurface waves on the corrugated surface of a medium of arbitrary symmetry is studied. The localized solution originates from an exceptional bulk wave associated with a transonic state of positive or negative curvature. It is shown that the period of corrugation or the frequency of the wave can universally be chosen such that the solution will exist. The range of permissible periods (frequencies) is different for positive and negative curvature transonic states, it being wider near transonic states of positive curvature. The imaginary component of the pseudosurface wave velocity is found to vary as the height of grooves to period of corrugation ratio raised in fourth or sixth power, depending on the transonic state with which the exceptional wave is associated. A simple analytical expression is derived allowing estimations to be made of the penetration depth and the velocity of the localized wave.
Authors:
Darinskii
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Publication Detail:
Type:  JOURNAL ARTICLE    
Journal Detail:
Title:  The Journal of the Acoustical Society of America     Volume:  107     ISSN:  1520-8524     ISO Abbreviation:  J. Acoust. Soc. Am.     Publication Date:  2000 May 
Date Detail:
Created Date:  2000-05-30     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7503051     Medline TA:  J Acoust Soc Am     Country:  UNITED STATES    
Other Details:
Languages:  Eng     Pagination:  2447-53     Citation Subset:  -    
Affiliation:
Institute of Crystallography, Academy of Sciences of Russia, Moscow. adar@ns.crys.ras.ru
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