Synthesis and analysis of linear and nonlinear acoustical vortices

被引:85
作者
Marchiano, R
Thomas, JL
机构
[1] Univ Paris 06, Modelisat Mecan Lab, CNRS, UMR 7607, F-75252 Paris, France
[2] Univ Paris 06, CNRS, UMR 7588, Inst Nanosci Paris, F-75015 Paris, France
来源
PHYSICAL REVIEW E | 2005年 / 71卷 / 06期
关键词
D O I
10.1103/PhysRevE.71.066616
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
Acoustical screw dislocations are synthesized in various configurations with a versatile experimental setup. The experimental setup is based on the inverse filter technique and allows one to synthesize one or more acoustical vortices with a chosen width, position, and topological charge. An interesting feature of this experimental facility to study screw dislocation behavior is the direct measurement in amplitude and phase. This characteristic is used to develop an original method of decomposition of an acoustical vortex field in order to analyze the acoustical vortices. Moreover, the behaviors of two acoustical vortices of the same or opposite charge have been studied experimentally and compared to theoretical laws.
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页数:11
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