Results 31 to 40 of about 1,120,417 (313)
Depth-of-field effects in wiggler radiation sources: Geometrical versus wave optics
Physical Review Accelerators and Beams, 2017 A detailed analysis is carried out of the optical properties of synchrotron radiation emitted by multipole wigglers, concentrating on the effective source size and brightness and the so-called “depth of field” effects, concerning which there has been ...
Richard P. Walker
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Geometrical optics method in the theory of channeling of high energy particles in crystals
Physics Letters B, 2019 The process of scattering of fast charged particles in thin crystals is considered in the transitional range of thicknesses, between those at which the channeling phenomenon is not developed and those at which it is realized.
N.F. Shul'ga, S.N. Shulga
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Case study: A simple optical inverse problem from a geometrical optics point of view [PDF]
Journal of Advanced Dielectrics, 2019 In this paper, we revisit the simple problem of reflection from a dielectric sphere for light rays and define a form of optical inverse problem in the sense of geometrical optics (GO).
Anshi Yan, Yangjie Liu, Wenfeng Wang
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IEEE Access, 2019 A ray tracing method based on the geometrical optics and physical optics approximation is proposed for calculation of the scattering from rough metal surface with rough coating in terahertz regime.
Rui Wang, Guangbin Guo, Lixin Guo
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Convex Obstacles from Travelling Times
Mathematics, 2021 We consider situations where rays are reflected according to geometrical optics by a set of unknown obstacles. The aim is to recover information about the obstacles from the travelling-time data of the reflected rays using geometrical methods and ...
Lyle Noakes, Luchezar Stoyanov
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Dynamics of zonal flows: failure of wave-kinetic theory, and new geometrical optics approximations [PDF]
Journal of Plasma Physics, 2016 The self-organisation of turbulence into regular zonal flows can be fruitfully investigated with quasi-linear methods and statistical descriptions.
J. Parker
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Useful Solutions for Plane Wave Diffraction by Dielectric Slabs and Wedges
International Journal of Antennas and Propagation, 2012 This work presents an overview of available uniform asymptotic physical optics solutions for evaluating the plane wave diffraction by some canonical geometries of large interest: dielectric slabs and wedges.
Gianluca Gennarelli, Giovanni Riccio
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Numerical description of mode coupled waves in inhomogeneous magnetized plasmas [PDF]
EPJ Web of Conferences, 2019 Geometrical optics (GO) ray tracing has been widely used for a description of electron cyclotron resonance waves in inhomogeneous magnetized fusion plasmas.
Yanagihara Kota +2 more
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Results in Optics, 2021 The Laser Guide Star Facility (LGSF), as the most important part of the adaptive optics system of the large ground-based telescope, is aimed to generate multiple laser guide stars at the sodium layer.
Yan Mo +3 more
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Real and complex valued geometrical optics inverse ray-tracing for inline field calculations
Physics of Plasmas, 2019 A 3-D ray based model for computing laser fields in dissipative and amplifying media is presented. The eikonal equation is solved using inverse ray-tracing on a dedicated nonstructured 3-D mesh.
A. Colaïtis +4 more
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