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We introduce a dynamic light scattering technique capable of resolving motion that changes systematically, and rapidly, with time. It is based on the visibility of a speckle pattern for a given exposure duration. Applying this to a vibrated…

软凝聚态物质 · 物理学 2007-05-23 P. K. Dixon , D. J. Durian

Full-wave electromagnetic simulations of electrically large arrays of complex antennas and scatterers are challenging, as they consume large amount of memory and require long CPU times. This paper presents a new reduced-order modeling…

计算工程、金融与科学 · 计算机科学 2018-12-05 Utkarsh R. Patel , Piero Triverio , Sean V. Hum

On the basis of the separated form-factor model, a code for fitting the small-angle neutron scattering spectra of the polydispersed vesicle population has been developed. Vesicle and membrane bilayer parameters are analyzed for various…

化学物理 · 物理学 2007-05-23 E. V. Zemlyanaya , M. A. Kiselev , V. K. Aswal

We study the scattering of two-level atoms at narrow laser fields, modeled by a $\delta$-shape intensity profile. The unique properties of these potentials allow us to give simple analytic solutions for one or two field zones. Several…

量子物理 · 物理学 2009-11-13 D. Seidel , J. G. Muga , G. C. Hegerfeldt

This article is a tutorial on the practical implementation of a method of measurement of minute deformations based on multiple scattering. This technic has been recently developed and has proven to give new insights on the spatial…

软凝聚态物质 · 物理学 2017-05-24 Axelle Amon , Alesya Mikhailovskaya , Jérôme Crassous

This paper presents the Smoothed particle hydrodynamics (SPH) model to examine the propagation of a regular and irregular waves. The SPH method is a grid-less Lagrangian approach which is capable of good accuracy in tracking large…

流体动力学 · 物理学 2009-11-11 D. De Padova , R. A. Dalrymple , M. Mossa , A. F. Petrillo

This paper describes a measurement of light-by-light scattering based on Pb+Pb collision data recorded by the ATLAS experiment during Run 2 of the LHC. The study uses $2.2$ nb$^{-1}$ of integrated luminosity collected in 2015 and 2018 at…

高能物理 - 实验 · 物理学 2021-10-14 ATLAS Collaboration

"Particle methods" are sequential Monte Carlo algorithms, typically involving importance sampling, that are used to estimate and sample from joint and marginal densities from a collection of a, presumably increasing, number of random…

统计计算 · 统计学 2014-07-17 J. N. Corcoran , D. Jennings

Based on the convex hull construction algorithm, a new geometrical model of ice crystals is proposed to investigate the scattering properties of cirrus clouds particles. Light scattering matrices involving complete polarization information…

大气与海洋物理 · 物理学 2026-04-13 Quan Mu

Scanning Tunneling Spectroscopy (STS) is a unique technique to probe the local density of states (LDOS) at the atomic scale by measuring the tunneling conductance between a sharp tip and a sample surface. However, the technique suffers of…

We consider the elastic scattering of electrons by hydrogen atoms in the presence of a two-color circularly polarized laser field in the domain of moderate intensities below $10^{13}$ W/cm$^2$ and high projectile energies. A hybrid approach…

原子物理 · 物理学 2023-06-16 Gabriela Buica

Theory predicts that a plane wave scattered by a thin slab of gas yields, in the forward direction and under specific circumstances, a larger irradiance than would be observed in the absence of the gas. This enhanced Rayleigh scattering…

星系天体物理 · 物理学 2012-11-30 Frederic Zagury , Pierre Pellat-Finet

We propose a new method for the characterization of stellar stratification in stellar systems. The method uses the mean-square radius (also called the Spitzer radius) of the system as a diagnostic tool. An estimate of the observable…

天体物理学 · 物理学 2011-02-11 Dimitrios A. Gouliermis , Richard de Grijs , Yu Xin

Accurate characterization of the asymmetry parameter g is of crucial importance for many radiative transfer and climate models. Here, we present our portable light scattering (PLS) device which is designed for in situ, real-time, and…

大气与海洋物理 · 物理学 2019-05-01 Yuli W. Heinson , Christopher M. Sorensen , Rajan K. Chakrabarty

High signal-to-noise and high-resolution light scattering spectra are measured for nitrous oxide (N$_2$O) gas at an incident wavelength of 403.00 nm, at 90$^\circ$ scattering, at room temperature and at gas pressures in the range $0.5-4$…

流体动力学 · 物理学 2018-03-14 Y. Wang , K. Liang , W. van de Water , W. Marques , W. Ubachs

Linear alkylbenzene (LAB) is adopted to be the organic solvent for the Jiangmen Underground Neutrino Observatory (JUNO) liquid scintillator detectors due to the ultra-transparency. However the current Rayleigh scattering length calculation…

仪器与探测器 · 物理学 2015-12-09 Qian Liu , Xiang Zhou , Wenqian Huang , Yuning Zhang , Wenjie Wu , Wentai Luo , Miao Yu , Yangheng Zheng , Li Zhou , Jun Cao , Yifang Wang

Scattering of starlight by dust, molecules and electrons in spiral galaxies will produce a modification of the direct intensity and a polarization in the observed light. We treat the case where the distribution of scatterers can be…

天体物理学 · 物理学 2009-10-31 J. F. L. Simmons , E. Audit

Laser Guide Star Adaptive Optics (LGS-AO) is becoming routine in several astronomical observatories. The use of powerful lasers generates sensible Raman emissions on the uplink laser beam path, plus secondary Rayleigh scattering from…

天体物理仪器与方法 · 物理学 2022-08-17 G. Lombardi , D. Bonaccini Calia , M. Centrone , A. de Ugarte Postigo , S. Geier

In this letter, we propose a novel technique for obtaining scattering components from Polarimetric Synthetic Aperture Radar (PolSAR) data using the geodesic distance on the unit sphere. This geodesic distance is obtained between an…

计算机视觉与模式识别 · 计算机科学 2025-05-27 Debanshu Ratha , Avik Bhattacharya , Alejandro C. Frery

Systems of spherical particles moving in Stokes flow are studied for a different particle internal structure and boundaries, including the Navier-slip model. It is shown that their hydrodynamic interactions are well described by treating…

软凝聚态物质 · 物理学 2015-06-18 Bogdan Cichocki , Maria L. Ekiel-Jezewska , Eligiusz Wajnryb