Results 11 to 20 of about 70,394 (268)

Resonances of rectangular resonators [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1981
We have used variational methods based on the work of Holland and Eernisse to predict the resonant frequencies of rectangular resonators for use in acoustic transducer arrays. We have predicted both the open and short circuited resonances and have compared the theoretical results obtained with a large number of experiments carried out on such ...
P. A. Bennett, G. S. Kino
openaire   +1 more source

Resonances in Bianisotropic Layers

open access: yesIEEE Photonics Journal, 2018
This paper rigorously studies the resonant transmission of electromagnetic waves around embedded trapped modes in bianisotropic films and derives the dispersion relations, the embedded mode condition, and the coupling and tunneling of the evanescent wave
Faroq Razzaz, Majeed A. S. Alkanhal
doaj   +1 more source

A High-Resolution Terahertz Electric Field Sensor Using a Corrugated Liquid Crystal Waveguide

open access: yesCrystals, 2019
Liquid crystals (LCs) can always reflect variable optical properties in a broad terahertz (THz) band under external electric or magnetic fields. Based on the measurements of these varying properties, we can realize electric and magnetic field sensing ...
Lan-Lan Xu   +3 more
doaj   +1 more source

Variational Solutions for Resonances by a Finite-Difference Grid Method

open access: yesMolecules, 2021
We demonstrate that the finite difference grid method (FDM) can be simply modified to satisfy the variational principle and enable calculations of both real and complex poles of the scattering matrix.
Roie Dann   +6 more
doaj   +1 more source

Nucleon resonances in the fourth-resonance region [PDF]

open access: yesThe European Physical Journal A, 2011
Nucleon and $Δ$ resonances in the fourth resonance region are studied in a multichannel partial-wave analysis which includes nearly all available data on pion- and photo-induced reactions off protons. In the high-mass range, above 1850\,MeV, several alternative solutions yield a good description of the data.
Anisovich, A. V.   +4 more
openaire   +2 more sources

Photoionization and Opacity

open access: yesAtoms, 2023
Opacity determines radiation transport through material media. In a plasma source, the primary contributors to atomic opacity are bound–bound line transitions and bound-free photoionization into the continuum.
Anil Pradhan
doaj   +1 more source

The Genuine Resonance of Full-Charm Tetraquarks

open access: yesUniverse, 2021
In this work, the genuine resonance states of full-charm tetraquark systems with quantum numbers JPC=0++,1+−,2++ are searched in a nonrelativistic chiral quark model with the help of the Gaussian Expansion Method.
Xiaoyun Chen
doaj   +1 more source

Future accelerator projects: new physics at the energy frontier

open access: yesFrontiers in Physics, 2023
High-energy colliders provide direct access to the energy frontier, allowing to search for new physics at scales as high as the machine’s center-of-mass energy, perform precision measurements of the Standard Model (SM) parameters, including those related
Anadi Canepa, Monica D’Onofrio
doaj   +1 more source

Waveguide-Assisted Magneto-Optical Effects in 1D Garnet/Co/Au Plasmonic Crystals

open access: yesPhotonics
Magneto-plasmonic structures have been a subject of tremendous attention of researchers in recent decades as they provide unique approaches regarding the efficient control of optical, magneto-optical, and nonlinear-optical effects.
Tatiana Murzina   +6 more
doaj   +1 more source

Asymptotic method for approximation of resonant interaction of nonlinear multidimensional hyperbolic waves

open access: yesMathematical Modelling and Analysis, 2008
A method of averaging along characteristics of weakly nonlinear hyperbolic systems, which was presented in earlier works of the author for one dimensional waves, is generalized for some cases of multidimensional wave problems.
Aleksandras Krylovas
doaj   +1 more source

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