Results 41 to 50 of about 156,506 (292)

A Priori Information and Off-Axis Measurements in Terahertz Tomography

IEEE Access, 2023
Terahertz tomography is a non-contact inspection technique to image objects from multiple angles and reconstruct their 3D volume from intensity and time-of-flight transmission data, without the need for radiation protection measures.
Karl H. May, Andreas Keil, Georg Von Freymann, Fabian Friederich   +3 more
doaj   +1 more source

The experimental study of the surface current excitation under the influence of a relativistic electron electromagnetic field

, 2009
The problem of the surface current excitation in a conductive targets by a relativistic electron electric field as the origin of such radiation mechanisms as diffraction and transition radiation of relativistic electron was considered in frame of both ...
Naumenko, G., Popov, Yu., Potylitsyn, A., Sukhikh, L.   +3 more
core   +1 more source

Development of neural networks for modeling diffraction of electromagnetic radiation on a single cylinder and a group of cylindrical objects

Компьютерная оптика
We show the effectiveness of using neural networks to model the diffraction of electromagnetic radiation on cylindrical objects, and compare various architectures of neural networks. The error of the neural-network-aided diffraction modeling is evaluated
E.E., D.L.
doaj   +1 more source

Two-dimensional wave radiation and diffraction problems in a flat or sloping seabed environment [PDF]

Journal of Fluids and Structures, 2017
Abstract Two-dimensional water wave problems are investigated in an environment with a flat or sloping rigid seabed adopting a continuous Rankine source method. All the fluid domain surfaces, that is the free, body and seabed surfaces, are discretized using continuous panels.
Feng, Aichun, Bai, Wei, Price, WG
openaire   +2 more sources

Novel Tailoring of Ternary ZnS‐MXene‐TiO2 Nanocomposite Heterojunction and Its Tunable Electrochemical Properties With Enhanced Photocatalytic Degradation

Advanced Engineering Materials, EarlyView.
ZnS‐MXene‐TiO2 nanocomposite heterojunction for photocatalytic decomposition of this methylene blue dye (MB) greatly improves light absorption, charge separation, and active site area. Two‐dimensional MXene forms nanocomposites by easily combining them with 0D (quantum dots), 1D (tube and wire), 2D (plane and sheet), and 3D (particle and lamellar ...
Latiful Kabir, Dohyun Kim, Minho Song, Jae Doc Na, Young Jun Joo, Kwang Youn Cho, Karna Wijaya, Won‐Chun Oh   +7 more
wiley   +1 more source

Spatial resolution in optical transition radiation beam diagnostics

Physical Review Special Topics. Accelerators and Beams, 1998
An evaluation of the optical transition radiation (OTR) single particle image dimension is obtained using diffraction theory based on a realistic description of the radiation source.
M. Castellano, V. A. Verzilov
doaj   +1 more source

Theory and Applications of X-ray Standing Waves in Real Crystals

, 2000
Theoretical aspects of x-ray standing wave method for investigation of the real structure of crystals are considered in this review paper. Starting from the general approach of the secondary radiation yield from deformed crystals this theory is applied ...
, , Adams B, Afanasev A M, Afanasev A M, Afanasev A M, Afanasev A M, Afanasev A M, Afanasev A M, Akimoto K, Alvarez J C, Annaka S, Annaka S, Annaka S, Annaka S, Authier A, Band I M, Barbee T W, Batterman B W, Bedzyk M J, Born M, Borrmann G, Borrmann G, Brümmer O, Bushuev V, Bushuev V, Bushuev V, Bushuev V A, Bushuev V A, Bushuev V A, Calculations were performed using XOP program, Chang Shin-Lin, Colella R, Fienup J R, Fisher C J, Greiser N, Grigorian S A, Grygorian S A, Guigay J-P, Hertel N, Hümmer K, I A Vartanyants, Iida A, James R W, Kamke E, Kato N, Kazimirov A Yu, Kazimirov A Yu, Kazimirov A Yu, Kohn V G, Kohn V G, Kohn V G, Kohn V G, Kohn V G Computer code XSWAN, Kovalchuk M V, Kovalchuk M V, Kovalchuk M V, Kovalchuk M V, Kovalchuk M V, Kovev E K, Kruglov M V, Lagomarsino S, Lessmann A, Liljequist D, M V Kovalchuk, Malgrange C, Nakahata T, Novak P, Ohtsuki Y N, Patel J R, Pinsker Z G, Polikarpov M A, Ryssel H, Schreiber F, Schuster M, Shchemelev V N, Shchemelev V N, Sozontov E A, Storm E, Takagi S, Takahashi T, Taupin D, Vainshtein B K, Vartanyants I A, Vartanyants I A, Vartanyants I A, Vartanyants I A, Vartanyants I A, Vartanyants I A, Vartanyants I A, von Laue M, Woicik J C, Woodruff D P, Zachariasen W H, Zegenhagen J, Zheludeva S I, Zheludeva S I, Zheludeva S I, Zheludeva S I, Zheludeva S I   +99 more
core   +1 more source

Existence and Uniqueness of Solutions of Integral Equations for Acoustic Radiation and Diffraction Problems [PDF]

The Journal of the Acoustical Society of America, 1967
Although a radiation or diffraction problem may have a unique solution, certain formulations of the problem may result in integral equations that do not have solutions, or whose solutions are not unique. Typically, when considering the exterior problem, trouble may occur at frequencies corresponding to resonance in the interior of the body.
openaire   +1 more source

Removing Oxide Layers and Retaining Oxide‐Free Steel Surfaces by Polishing in Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
In this study, the efficacy of wet mechanical polishing under an oxygen‐free atmosphere for deoxidation and the retention of an oxide‐free steel surface are elucidated using X‐ray photoelectron spectroscopy. The methodology proved successful; however, the results were highly dependent on the preparation of the solvents used to clean the samples after ...
Friedrich Bürger, Lienhard Wegewitz, Wolfgang Maus‐Friedrichs   +2 more
wiley   +1 more source

Solving of the inverse diffraction problem in the first Rytov approximation for retrieving the phase object dielectric permittivity

Компьютерная оптика
In the study we derive a solution of the inverse diffraction problem aimed at retrieving the dielectric permittivity of a phase object by using the changes in the intensity and phase shift of coherent laser radiation probing the object.
E.V. Parkevich, A.I. Khirianova, T.F. Khirianov   +2 more
doaj   +1 more source