Experimental determination of the total scattering cross section of individual scatterers in a multiple scattering medium.

2009 ◽  
Vol 125 (4) ◽  
pp. 2537-2537
Author(s):  
Shane Walker ◽  
Philippe Roux ◽  
William A. Kuperman
Keyword(s):  
Experimental Determination ◽  
Multiple Scattering ◽  
Cross Section ◽  
Scattering Cross Section ◽  
Scattering Medium ◽  
Total Scattering ◽  
Scattering Cross ◽  
Total Scattering Cross Section

Bounds on the total scattering cross-section forN-body systems

1979 ◽  
Vol 52 (1) ◽  
pp. 115-131 ◽  
Author(s):  
W. O. Amrein ◽  
D. B. Pearson ◽  
K. B. Sinha
Keyword(s):  
Cross Section ◽  
Scattering Cross Section ◽  
Total Scattering ◽  
Scattering Cross ◽  
Total Scattering Cross Section

The Gradient of Total Multiple Scattering Cross-Section and Its Application to Acoustic Cloaking

2020 ◽  
Vol 28 (04) ◽  
pp. 1950016
Author(s):  
Feruza A. Amirkulova ◽  
Andrew N. Norris
Keyword(s):  
Parallel Computing ◽  
Multiple Scattering ◽  
Cross Section ◽  
Optimization Algorithm ◽  
Analytic Form ◽  
Scattering Cross Section ◽  
Thin Shells ◽  
Scattering Cross ◽  
Total Scattering Cross Section ◽  
Gradient Based

We derive a formula for the gradients of the total scattering cross-section (TSCS) with respect to positions of a set of cylindrical scatterers. The analytic form enhances modeling capability when combined with optimization algorithms and parallel computing. As application of the method, we consider a gradient-based minimization of TSCS for a set of cylindrical obstacles by incrementally repositioning them so that they eventually act as an effective cloaking device. The gradient-based optimization algorithm reduces the TSCS by evaluating its derivative with respect to the cylinder positions and then perturbatively optimizing the position of each cylinder in the cloaking device while taking into account acoustic multiple scattering between the cylinders. The method is illustrated for clusters of hard cylinders and sets of elastic thin shells in water.

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