Results 251 to 260 of about 2,422 (292)

Poisson distributions and diffractive scattering

Lettere al Nuovo Cimento, 1971
I t has long been a c o n v e n t i o n in t h e l i t e r a t u r e to exc lude e las t ic cross-sect ions w h e n ca l cu la t ing ave rage mul t ip l ic i t ies . I n p a r t t h i s is due to t h e fac t t h a t t he obse rved Po i s son n a t u r e (in mul t ip l ic i t ies ) of ine las t ic cross-sect ions a t h igh energies does n o t app ly to ...
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Distributed Beamforming Using a Scattering Network

2010 8th Annual Communication Networks and Services Research Conference, 2010
Novel beam-forming methodology is proposedthat employs passive RF devices in order to enhance thereceived signal. This paper demonstrates the feasibility of suchbeamforming and the realization methodology for a randomlyplaced set of passive devices. Typically, a beamforming isrealized by employing an antenna array at a receiver ortransmitter.
Vikram Reddy Surendra, Maciej J. Zawodniok   +1 more
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Multiplicity distribution in hadron-nucleus scattering

Physical Review D, 1985
It is argued that the multiplicity distribution in hadron-nucleus scattering should obey universal Koba-Nielsen-Olesen scaling at each impact parameter. For the whole nucleus, scaling remains approximately valid, but universality breaks down. The model predicts that as A increases, the peak of the scaled multiplicity distribution shifts towards smaller
, Kiang, , Ling, , Young, , Lam
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Vacuum Ultraviolet Scattering Distributions

Applied Optics, 1968
Measurements of reflectance and the profile of scattered intensity from rough and smooth surfaces are reported for incident radiation of 1216 A The profiles show the intensity of scattered uv in the plane of incidence at various incident angles. Black appearing surfaces are found to have reflectances higher than expected.
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Scattering states and distribution functions for microstructures

Physical Review B, 1987
Orthonormality and completeness relations are found for scattering states, the states used in treatments of resonant-tunneling double barriers and other short microstructures. Explicit normalized states are used to study the density matrix and Wigner distribution function of some simple but nontrivial structures.
, Kriman, , Kluksdahl, , Ferry
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Light scattering measurements of particle distributions

Applied Optics, 1976
Specially designed Fraunhofer plane masks are described for passing diffracted flux in proportion to the second, third, and fourth power of the radius of spherical particles. For a distribution of particles, the total volume of the particles can be monitored using the third power mask to produce a signal proportional to the sum of the cubes of the ...
A L, Wertheimer, W L, Wilcock
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Theory of single scattering by random distributed scatterers

IEEE Transactions on Antennas and Propagation, 2003
We show that the Fraunhofer diffraction approximation can never be used in the theory of scattering by distributed scatterer (such as turbulence) in the far zone of antenna. We consider the single scattering of waves in a medium containing weak refractive index inhomogeneities using a Fresnel diffraction approximation.
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Elastic multiple scattering by randomly distributed spherical scatterers

Microwave and Optical Technology Letters, 1988
AbstractFrom the basic integral equation for multiple scattered fields, the expansions of the fields in terms of vector spherical wave functions, and the translational addition theorems of the vector spherical wave functions, a set of coupled linear equations has been derived for the expansion coefficients of elastic scattering fields by randomly ...
Wang zhiliang, Jin Hau
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Scattering and diffusion of a beam wave in randomly distributed scatterers

Journal of the Optical Society of America, 1983
Diffusion theory is applied to the transmission of an optical beam through randomly distributed particles, and the theoretical calculations are compared with experimental data for an optical beam at 0.6 μm propagating through latex scatterers of sizes 0.109 and 2.02 μm.
Akira Ishimaru, Yasuo Kuga, Rudolf L.-T. Cheung, Koichi Shimizu   +3 more
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Sampling of angular distribution in Compton scattering

International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes, 1992
Abstract We develop an algorithm, based on the acceptance-rejection method, with a simple envelope rejection function for sampling the angular distribution in Compton scattering from Klein-Nishina differential scattering cross section. The algorithm enhances the sampling efficiency for high-energy photons increasingly with increasing photon energies,
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