Small-angle scattering

Small-angle scattering

Small-angle scattering (SAS) is a scattering technique based on the deflection of a beam of particles, or an electromagnetic or acoustic wave, away from the straight trajectory after it interacts with structures that are much larger than the wavelength of the radiation. The deflection is small (0.1-10°) hence the name "small-angle". SAS techniques can give information about the size, shape and orientation of structures in a sample.

SAS can refer to:
* Small angle neutron scattering (SANS)
* Small-angle X-ray scattering (SAXS)
* Biological small-angle scattering, SAXS or SANS applied to biological systems


Wikimedia Foundation. 2010.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • Biological small-angle scattering — Small angle scattering is a fundamental method for structure analysis of materials, including biological materials. Small angle scattering allows one to study the structure of a variety of objects such as solutions of biological macromolecules,… …   Wikipedia

  • Small-angle X-ray scattering — (SAXS) is a small angle scattering (SAS) technique where the elastic scattering of X rays (wavelength 0.1 ... 0.2 nm) by a sample which has inhomogeneities in the nm range, is recorded at very low angles (typically 0.1 10°). This angular range… …   Wikipedia

  • Small-angle neutron scattering — (SANS) is a laboratory technique, similar to the often complementary techniques of small angle X ray scattering (SAXS) and light scattering. These are particularly useful because of the dramatic increase in forward scattering that occurs at phase …   Wikipedia

  • Small-angle X-ray scattering — SAXS ou Small Angle X Ray Scattering est une technique permettant de caractériser la morphologie de matériaux à des échelles allant grosso modo de 1 nm à 100 nm. Dans le cas de matériaux particulaires, cette caractérisation peut consister en la… …   Wikipédia en Français

  • Grazing-incidence small-angle X-ray scattering — (GISAXS) is a scattering technique most commonly done at synchrotron radiation facilities. A related technique also exists for neutron scattering (GISANS). 300px|thumb|right|Scheme 1: GISAXS scattering geometry. The incident beam strikes the… …   Wikipedia

  • Scattering — is a general physical process where some forms of radiation, such as light, sound, or moving particles, are forced to deviate from a straight trajectory by one or more localized non uniformities in the medium through which they pass. In… …   Wikipedia

  • Scattering parameters — or S parameters are properties used in electrical engineering, electronics engineering, and communication systems engineering describing the electrical behavior of linear electrical networks when undergoing various steady state stimuli by small… …   Wikipedia

  • Magic angle (EELS) — This article is about the magic angle as defined in the field of electron energy loss spectroscopy. For the magic angle as defined in the field of nuclear magnetic resonance spectroscopy, see magic angle. The magic angle is a particular value of… …   Wikipedia

  • scattering — /skat euhr ing/, adj. 1. distributed or occurring here and there at irregular intervals; scattered. 2. straggling, as an assemblage of parts. 3. (of votes) cast in small numbers for various candidates. 4. distributing, dispersing, or separating.… …   Universalium

  • Scattering theory — Top: the real part of a plane wave travelling upwards. Bottom: The real part of the field after inserting in the path of the plane wave a small transparent disk of index of refraction higher than the index of the surrounding medium. This object… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”