small-angle scattering


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small-angle scattering

[¦smȯl ‚aŋ·gəl ′skad·ər·iŋ]
(physics)
Scattering of a beam of electromagnetic or acoustic radiation, or particles, at small angles by particles or cavities whose dimensions are many times as large as the wavelength of the radiation or the de Broglie wavelength of the scattered particles. Also known as low-angle scattering.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Compensation effects of oblique incidence and plasma anisotropy on the statistical properties of multiply scattered radiation in the absorbing medium was analyzed in the small-angle scattering approximation using the geometrical optics method.
Gille demonstrates to new and experienced scientists how to apply small-angle scattering (SAS) to characterize the particle density and pattern of physical and chemical materials in various fields.
Glatter, "Small-angle scattering of interacting particles.
Jemian, "Irena: tool suite for modeling and analysis of small-angle scattering," Journal of Applied Crystallography, vol.
Small-angle scattering of UV radiation is typical of algae and plants chloroplast having ellipsoidal shape with diameter from 1 to 5 [micro]m and length from 1 [micro]m to 10 [micro]m [4].
This model is included in small-angle scattering data analysis software packages such as the IGOR-based package used at the NIST Center for Neutron Research (14).
Wong et al., "A review of small-angle scattering models for random segmented poly(ether-urethane) copolymers," Polymer, vol.
(6-9) The size of the particles and the contrast provided by the electron density difference between latex particles and dispersion medium make small-angle scattering techniques ideal for the structural analysis.
Among the topics are a single-molecule barcoding system using nanoslits for DNA analysis called nanocoding, inserting and manipulating DNA in a nanopore with optical tweezers, analyzing biomolecules using surface plasmons, small-angle scattering and neutron contrast variation for studying biomolecular complexes, imaging quantum dots in vivo, the monitoring and affinity purification of proteins using dual tags with tetracysteine motifs, magnetic nanoparticles for local drug delivery using magnetic implants, and custom-designed molecular scissors for site-specific manipulation of the plant and mammalian genomes.
Guinier (20) introduced the concept of "particle scattering" where he demonstrated that a single colloidal particle could produce diffused X-ray small-angle scattering, with a maximum at zero angles (21).
Figure 3 shows a combined plot of small-angle scattering data obtained using light and x-ray instruments for one of the developmental samples.

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