Results 251 to 260 of about 1,075,159 (297)

Diffuse And Inelastic Scattering – Multiple Scattering Effects

2004
Abstract In the previous chapter we showed that fluctuations of the crystal potential associated with thermal vibrations of atomic nuclei, randomly distributed lattice defects, and electronic excitations give rise to diffuse scattering of high-energy electrons. Using perturbation theory we derived an explicit expression for the amplitude
L -M Peng, S L Dudarev, M J Whelan
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Soret effect in forced Rayleigh scattering

Applied Physics B Photophysics and Laser Chemistry, 1987
In forced Rayleigh scattering of mixtures or suspensions the temperature gratings generate, by the Soret effect, concentration gratings that may be very important since they produce both a phase and an amplitude grating superimposed on the principal one. The experimental evidence of their influence was given by Thyagarajan and Lallemand using a mixture
BLOISI, FRANCESCO, VICARI, LUCIANO ROSARIO MARIA, P. CAVALIERE, S. MARTELLUCCI, J. QUARTIERI, P. MORMILE, G. PIERATTINI   +6 more
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Effect of multiple light scattering on transmitted and scattered light

Applied Optics, 1991
Photocount distributions have been calculated and experimentally determined for light transmitted through a dispersion of particles of varying density. From these the coherent and incoherent components of the transmitted light intensity could be determined. The coherent intensity was shown to obey the Lambert-Beer law.
C, Konák, J, Jakes, P, Stepánek, F, Petrás, M, Kárská, J, Krepelka, J, Perina   +6 more
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Global relativistic effects in chaotic scattering

Physical Review E, 2017
The phenomenon of chaotic scattering is very relevant in different fields of science and engineering. It has been mainly studied in the context of Newtonian mechanics, where the velocities of the particles are low in comparison with the speed of light.
Juan D, Bernal, Jesús M, Seoane, Miguel A F, Sanjuán   +2 more
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COMPTON SCATTER EFFECTS IN CT RECONSTRUCTIONS

Journal of Computer Assisted Tomography, 1982
Compton scatter of x‐ray quanta is the dominant attenuation mechanism in medical diagnostic imaging. In this paper, it is shown that the scatter‐to‐primary ratio determines the nature and intensity of scatter artifacts in computed tomography (CT) reconstructions and that this ratio, while significantly lower than in radiographic and fluoroscopic ...
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Anisotropic effects in highly scattering media

Physical Review E, 2003
In this paper, we study anisotropic scattering and light propagation models applicable to diffuse optical tomography. We propose a model for anisotropic scattering in the radiative transfer framework and derive the corresponding anisotropic diffusion model.
Jenni, Heino, Simon, Arridge, Jan, Sikora, Erkki, Somersalo   +3 more
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Dispersive effects in pion-nucleus scattering

Physical Review C, 1985
The influence of dispersive, medium effects on pion-nucleus elastic scattering is investigated in a simple model. The pion-nucleus interaction in the impulse approximation is represented by an optical potential whose form is motivated by field-theoretic considerations and the properties of the ${\ensuremath{\Delta}}_{33}$ resonance. The intermediate ${\
, Ernst, , Johnson
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Pionic effects in quasielastic electron scattering

Nuclear Physics A, 1990
Abstract Quasielastic electron scattering from nuclei at high momentum transfer and energy loss is approached using a model which incorporates specific classes of effects arising from the exchange of pions between nucleons in the nucleus. Building on the (purely nucleonic) relativistic Fermi gas responses, pionic effects in 1p1h correlation and meson
ALBERICO, Wanda Maria, T. W. Donnelly, MOLINARI, Alfredo   +2 more
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Multiple-scattering effects in transmission oximetry

Medical & Biological Engineering & Computing, 1993
To develop an algorithm for the spectrophotometric determination of the oxygen saturation in blood, a model for the transmission of light in a scattering and absorbing medium is developed, taking into account effects of multiple scattering. The computed results obtained by a Monte Carlo simulating program agreed well with those found by experiment. The
I, Fine, A, Weinreb
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Multiple-scattering effects in quasielastic alpha-4He scattering.

Physical review. C, Nuclear physics, 1995
A multiple-scattering series for describing the quasielastic peak in nucleus-nucleus collisions is derived using the high-energy optical model. The effects of multiple knockout of target nucleons and internal excitation of the projectile are studied and found to be important for large energy loss and momentum transfers in inclusive alpha-4He ...
F A, Cucinotta, L W, Townsend, J W, Wilson   +2 more
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