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Coherent scattering of a nonmonochromatic divergent beam of X-ray quanta in a crystal excited by an acoustic wave is described
using a kinematic approach. The possibility of manifestation of a peculiar effect of amplification of the diffracted X-ray
beam by the acoustic wave is predicted using this approach. 相似文献
23.
Márcio AF Belo-Filho Franklina MB Toledo Bernardo Almada-Lobo 《The Journal of the Operational Research Society》2014,65(11):1735-1747
Setup operations are significant in some production environments. It is mandatory that their production plans consider some features, as setup state conservation across periods through setup carryover and crossover. The modelling of setup crossover allows more flexible decisions and is essential for problems with long setup times. This paper proposes two models for the capacitated lot-sizing problem with backlogging and setup carryover and crossover. The first is in line with other models from the literature, whereas the second considers a disaggregated setup variable, which tracks the starting and completion times of the setup operation. This innovative approach permits a more compact formulation. Computational results show that the proposed models have outperformed other state-of-the-art formulation. 相似文献
24.
Stability and convergence of the spectral Lagrange-Galerkin method for mixed periodic/non-periodic convection-dominated diffusion problems 总被引:1,自引:0,他引:1
We present a convergence analysis of the spectral Lagrange-Galerkinmethod for mixed periodic/non-periodic convection-diffusionproblems. The scheme is unconditionally stable, independentof the diffusion coefficient, even in the case when numericalquadrature is used. The theoretical predictions are illustratedby a series of numerical experiments. For the periodic case,our results present a significant improvement on those givenby Süli & Ware (1991) SIAM J. Numer.Anal.28, 423-445). 相似文献
25.
Pchelintsev I. A. Nasonov A. V. Krylov A. S. 《Computational Mathematics and Modeling》2021,32(2):111-119
Computational Mathematics and Modeling - We consider the construction of high-resolution images from a time series of fluorescence microscopy images obtained using a scintillator. A regularization... 相似文献
26.
N. V. Kamyshanchenko I. N. Kuzmenko N. N. Nasonov V. A. Nasonova 《Physics of Atomic Nuclei》2000,63(11):2011-2014
It is shown that, by varying the angular size of a collimator, the spectral distribution of parametric x-ray radiation can be split into two isolated peaks and that the center of the spectral distribution of this radiation is shifted in frequency in response to an increase in the collimator size. It is also predicted that an increase in the angular size of the collimator will lead to a substantial modification of the character of the orientation dependence of the radiation spectrum. 相似文献
27.
K. A. Vokhmyanina P. N. Zhukova E. F. Irribarra A. S. Kubankin Le Thu Hoai R. M. Nazhmudinov N. N. Nasonov G. P. Pokhil 《Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques》2013,7(2):271-275
The effect of the contactless transmission (guiding) of 10 keV electrons through cylindrical dielectric channels and planar channels formed by glass plates is studied. The capture and propagation of an electron beam along the channel axis, usual in these cases, are observed in the experiments with two plates. The deviation of the reflection angle from the specular angle and its dependence on the plate length and beamcurrent value under beam reflection from a single plate are investigated. 相似文献
28.
V. A. Astapenko N. A. Gostishchev P. N. Zhukova A. S. Kubankin N. N. Nasonov V. I. Sergienko V. A. Khablo 《Bulletin of the Russian Academy of Sciences: Physics》2008,72(6):863-866
The possibilities of using broadband X rays for diagnostics of the atomic structure of solids are considered. It is proposed to use virtual photons of the Coulomb field of a relativistic electron beam as primary probe radiation. 相似文献
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