Results 41 to 50 of about 1,959,105 (303)

2-Dimensional Dipolar Scattering [PDF]

open access: yesPhys. Rev. A 80, 052702 (2009), 2009
We characterize the long range dipolar scattering in 2-dimensions. We use the analytic zero energy wavefunction including the dipolar interaction; this solution yields universal dipolar scattering properties in the threshold regime. We also study the semi-classical dipolar scattering and find universal dipolar scattering for this energy regime.
arxiv   +1 more source

Silica Raman scattering probe for absolute calibration of Thomson scattering spectrometers [PDF]

open access: yes, 2021
We have developed a solid state probe for an absolute irradiance calibration of the Thomson scattering system on the Large Plasma Device (LAPD), based on Raman scattering off silica. Measurements performed with a triple-grating spectrometer have investigated the intensities of a pulsed laser beam Raman scattered off crystalline and amorphous silica ...
arxiv   +1 more source

A combinatorial approach to scattering diagrams [PDF]

open access: yes, 2019
Scattering diagrams arose in the context of mirror symmetry, but a special class of scattering diagrams (the cluster scattering diagrams) were recently developed to prove key structural results on cluster algebras.
Reading, Nathan
core   +3 more sources

Planar microwave retroreflector based on transmissive gradient index metasurface

open access: yesNew Journal of Physics, 2020
In this paper, a novel planar microwave retroreflector based on a transmissive gradient metasurface combined with a curved metal mirror is proposed and demonstrated.
Yong-Qiang Liu   +4 more
doaj   +1 more source

Do corners always scatter? [PDF]

open access: yesCommunications in Mathematical Physics, 331, 2 (2014), 725--753, 2012
We study time harmonic scattering for the Helmholtz equation in Rn. We show that certain penetrable scatterers with rectangular corners scatter every incident wave nontrivially. Even though these scatterers have interior transmission eigenvalues, the relative scattering (a.k.a.
arxiv   +1 more source

Estimating the size of the scatterer [PDF]

open access: yes, 2019
Formula for the size of the scatterer is derived explicitly in terms of the scattering amplitude corresponding to this scatterer. By the scatterer either a bounded obstacle $D$ or the support of the compactly supported potential is ...
arxiv   +1 more source

Long-range potential scattering: Converting long-range potential to short-range potential by tortoise coordinate [PDF]

open access: yesJ. Math. Phys. 62, 122102 (2021), 2018
Inspired by general relativity, we suggest an approach for long-range potential scattering. In scattering theory, there is a general theory for short-range potential scattering, but there is no general theory for long-range potential scattering. This is because the scattering boundary conditions for all short-range potentials are the same, but for ...
arxiv   +1 more source

A scattering of orders [PDF]

open access: yesTransactions of the American Mathematical Society, 2012
A linear ordering is scattered if it does not contain a copy of the rationals. Hausdorff characterised the class of scattered linear orderings as the least family of linear orderings that includes the class of well-orderings and reversed well-orderings, and is closed under lexicographic sums with index set in .
Abraham, Uri   +4 more
openaire   +4 more sources

Magnetic Scattering [PDF]

open access: yes, 2021
The present chapter reviews current neutron and x-ray scattering techniques employed to elucidate the magnetic structures and spin dynamics of magnetic materials. Both techniques provide measurements as a function of the energy and the momentum transferred from the spin system to the probe particles, in terms of five-dimensional data sets as a function
Jeffrey W. Lynn, Bernhard Keimer
openaire   +3 more sources

The Neutron Macromolecular Crystallography Instruments at Oak Ridge National Laboratory: Advances, Challenges, and Opportunities

open access: yesCrystals, 2018
The IMAGINE and MaNDi instruments, located at Oak Ridge National Laboratory High Flux Isotope Reactor and Spallation Neutron Source, respectively, are powerful tools for determining the positions of hydrogen atoms in biological macromolecules and their ...
Flora Meilleur   +4 more
doaj   +1 more source

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