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We have analyzed the spatial distribution of galaxies from the release of the Sloan Digital Sky Survey of galactic redshifts (SDSS DR7), applying the complete correlation function (conditional density), two-point conditional density…

宇宙学与河外天体物理 · 物理学 2015-05-27 A. O. Verevkin , Yu. L. Bukhmastova , Yu. V. Baryshev

By using scattering in near field techniques, a microscope can be easily turned into a device measuring static and dynamic light scattering, very useful for the characterization of nanoparticle dispersions. Up to now, microscopy based…

光学 · 物理学 2015-05-13 D. Brogioli , D. Salerno , V. Cassina , F. Mantegazza

Researchers routinely characterize optical samples by computing the scattering cross-section. However, the experimental determination of this magnitude requires the measurement and integration of the components of the scattered field in all…

Machine learning (ML) techniques, in particular supervised regression algorithms, are a promising new way to use multiple observables to predict a cluster's mass or other key features. To investigate this approach we use the \textsc{MACSIS}…

宇宙学与河外天体物理 · 物理学 2019-01-16 Thomas J. Armitage , Scott T. Kay , David J. Barnes

Using scanning gate microscopy (SGM), we probe the scattering between a beam of electrons and a two-dimensional electron gas (2DEG) as a function of the beam's injection energy, and distance from the injection point. At low injection…

介观与纳米尺度物理 · 物理学 2010-11-02 M. P. Jura , M. Grobis , M. A. Topinka , L. N. Pfeiffer , K. W. West , D. Goldhaber-Gordon

The radar scattering properties of realistic aggregate snowflakes have been calculated using the Rayleigh-Gans theory. We find that the effect of the snowflake geometry on the scattering may be described in terms of a single universal…

大气与海洋物理 · 物理学 2015-06-26 C. D. Westbrook , R. C. Ball , P. R. Field

Elastic light scattering by low-dimensional semiconductor objects is investigated theoretically. The differential cross section of resonant light scattering on excitons in quantum dots is calculated. The polarization and angular…

介观与纳米尺度物理 · 物理学 2009-11-11 I. G. Lang , L. I. Korovin , S. T. Pavlov

We investigate ways of accurately simulating the propagation of energetic charged particles over small times where the standard Monte Carlo approximation to diffusive transport breaks down. We find that a small-angle scattering procedure…

天体物理学 · 物理学 2009-11-07 R. J. Protheroe , A. Meli , A. -C Donea

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 present a new statistical analysis of the large-scale stellar mass distribution in the Sloan Digital Sky Survey (data release 7). A set of volume-limited samples shows that the stellar mass of galaxies is concentrated in a range of…

宇宙学与河外天体物理 · 物理学 2021-02-10 Jose Gaite

X-ray diffraction (XRD) peak broadening analysis remains a cornerstone for quantifying crystallite size and lattice microstrain in materials. Among various approaches, the Size Strain Plot (SSP) method is widely employed for its conceptual…

材料科学 · 物理学 2025-12-09 Anand Pal

Non-polar magnetic nanoparticles agglomerate upon cooling. This process is followed by in-situ small angle X-ray scattering to assess structural properties of the emerging agglomerates. On the length scale of a few particle diameters, no…

软凝聚态物质 · 物理学 2020-11-30 Christian Appel , Björn Kuttich , Tobias Kraus , Bernd Stühn

We investigate lithium depletion in standard stellar models (SSMs) and main sequence (MS) open clusters, and explore the origin of the Li dispersion in young, cool stars of equal mass, age and composition. We first demonstrate that SSMs…

太阳与恒星天体物理 · 物理学 2015-06-18 Garrett Somers , Marc Pinsonneault

We investigate the relation between star formation rate (SFR) and stellar mass ($M_*$) in sub-galactic ($\sim 1$kpc) scale of 93 local ($0.01<z<0.02$) massive ($M_*>10^{10.5}M_{\odot}$) spiral galaxies. To derive spatially-resolved SFR and…

星系天体物理 · 物理学 2017-11-08 Abdurro'uf , Masayuki Akiyama

A phase retrieval technique using a spatial light modulator (SLM) and a phase diffuser for a fast reconstruction of smooth wave fronts is demonstrated experimentally. Diffuse illumination of a smooth test object with the aid of a phase…

光学 · 物理学 2015-06-11 Mostafa Agour , Percival F. Almoro , Claas Falldorf

Recent observational results indicate that the functional shape of the spatially-resolved star formation-molecular gas density relation depends on the spatial scale considered. These results may indicate a fundamental role of sampling…

星系天体物理 · 物理学 2015-06-04 Daniela Calzetti , Guilin Liu , Jin Koda

Surface Quasi-Elastic Light Scattering (SQELS) is an application of dynamic light scattering to measure the dynamics of the thermal roughness of liquid surfaces. An analysis of the spectrum of thermal fluctuations provides information on…

软凝聚态物质 · 物理学 2007-05-23 Pietro Cicuta , Ian Hopkinson

A spatial light modulator (SLM) is one of the most useful and convenient device to generate structural light beams such as twisted light and complexed images used in modern optical science. The unbounded dimension of twisted light makes it…

Using classical electrodynamics we determine the angular dependence of the light intensities radiated in second and third harmonic generation by spherical metal clusters. Forward and backward scattering is analyzed in detail. Also resonance…

凝聚态物理 · 物理学 2007-05-23 J. Dewitz , W. Hubner , K. H. Bennemann

The size of the stable elementary particles is investigated with the standing wave model. The particle size follows from the magnitude of the radiation pressure. It is shown that the outward directed radiation pressure is balanced by the…

高能物理 - 格点 · 物理学 2016-09-01 E. L. Koschmieder