[00844] Evidence of Multiple Effective Wavenumbers in Isotropic Random Particulate Materials
Session Time & Room : 5C (Aug.25, 13:20-15:00) @E817 A715
Type : Contributed Talk
Abstract : In random particulate materials, it is generally assumed that if we average over all particle configurations, the averaged wave field satisfies the wave equation with a unique effective wavenumber k∗. As the medium is homogeneous and isotropic - because the particles have no specific orientation or direction - it is reasonable to assume the presence of one effective wavenumber. However, recent work theoretically predicted the existence of at least two (complex) effective wavenumbers for one fixed frequency. A phenomenon normally observed only in anisotropic media. Our goal is to find clear evidence of these wavenumbers using the Monte-Carlo approach and show how they influence the total field.
