Results 231 to 240 of about 607,769 (290)
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Short–wave scattering: problems and techniques
Philosophical Transactions Series A, Mathematical, Physical, and Engineering Sciences, 2004The paper reviews the problem of modelling short-wave scattering. Short waves are understood to be waves in which the wavelength is much smaller than any other parameters in the problem. The background to wave problems is briefly described. The major numerical methods for wave modelling, finite elements, finite differences, boundary integrals and their
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Inverse scattering transform for wave-wave scattering
Physical Review A, 1975Abstract : An inverse scattering transform method is outlined for the resonant interaction of two plane waves (an incident wave of amplitude (A sub 1) and radian frequency (Omega sub 1) and a scattered wave of amplitude (A sub 2) and frequency (Omega sub 2) with a medium which can propagate a classical scattering waves (of amplutude Y and frequency ...
Flora Y. F. Chu, Alwyn C. Scott
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Journal of Mathematical Physics, 2003
The scattering of scalar waves by objects located inside a waveguide or a cavity is discussed using the method of pseudopotentials. Pseudopotentials were introduced to simulate short-range potentials in quantum mechanics and proved useful in many-body problems and in problems involving multicentered potentials.
Dacol, Dalcio K., Roy, Dilip G.
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The scattering of scalar waves by objects located inside a waveguide or a cavity is discussed using the method of pseudopotentials. Pseudopotentials were introduced to simulate short-range potentials in quantum mechanics and proved useful in many-body problems and in problems involving multicentered potentials.
Dacol, Dalcio K., Roy, Dilip G.
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Journal of Mathematical Physics, 1961
Multiple scattering effects due to a random array of obstacles are considered. Employing a ``configurational averaging'' procedure, a criterion is obtained for the validity of approximate integral equations describing the various field quantities of interest.
Waterman, P. C., Truell, R.
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Multiple scattering effects due to a random array of obstacles are considered. Employing a ``configurational averaging'' procedure, a criterion is obtained for the validity of approximate integral equations describing the various field quantities of interest.
Waterman, P. C., Truell, R.
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2010
We give an overview of wave scattering in complex geometries, where the corresponding rays are typically chaotic. In the high-frequency regime, a number of universal (geometry-independent) properties that are described by random matrix theory emerge. Asymptotic methods based on the underlaying rays explain this universality and are able to go beyond it
Keating, Jonathan P., Novaes, Marcel
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We give an overview of wave scattering in complex geometries, where the corresponding rays are typically chaotic. In the high-frequency regime, a number of universal (geometry-independent) properties that are described by random matrix theory emerge. Asymptotic methods based on the underlaying rays explain this universality and are able to go beyond it
Keating, Jonathan P., Novaes, Marcel
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Transmittance for wave-packet scattering
Physical Review A, 1992Different expressions for the transmittance in wave-packet scattering in one dimension are examined. Special attention is paid to the difficulties when the initial packet ρ(0) has negative momentum components. A general formula is provided for this case, and the domain of applicability of a simple approximate expression is indicated.
, Muga, , Brouard, , Snider
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Inverse scattering with diffusing waves
Journal of the Optical Society of America A, 2001We consider the problem of imaging the optical properties of a highly scattering medium probed by diffuse light. An analytic solution to this problem is derived from the singular value decomposition of the forward-scattering operator, which leads to explicit inversion formulas for the inverse scattering problem with diffusing waves.
J C, Schotland, V A, Markel
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Multiple scattering of seismic waves
Ultrasonics, 2002We present theory and numerical simulations to model seismic wave propagation in the Earth crust. We compare them to observations made in Mexico.
N, Trégourès +6 more
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Continuous-wave stimulated Raman scattering
Optics Letters, 1991We report what is to our knowledge the first observation of continuous-wave stimulated Raman scattering (SRS). Both forward and enhanced backward SRS were observed in liquids, and the large spectral frequency shift between pump and probe makes signal detection easy.
C H, Bryant, M, Golombok
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