Grazing incidence diffraction

Grazing incidence X-ray and neutron diffraction, typically from a crystalline structure (abbreviation GIXD or GID), uses small incident angles for the incoming X-ray or neutron beam, so that diffraction can be made surface sensitive. It is used to study surfaces and layers because wave penetration is limited. Distances are in the order of nanometres. Below (typically 80%) of the critical angle of the surface material studied an evanescent wave is established for a short distance and is exponentially damped. Therefore Bragg reflections are only coming from the surface structure.

An advantage of GIXD is that the electric field at the critical angle is amplified locally by a factor of four, therefore the GIXD signal is stronger.

Further reading

Jens Als-Nielsen, Elements of Modern X-ray Physicshttp://www.biophysj.org/cgi/reprint/74/5/2443.pdf


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • 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

  • Diffraction topography — (short: topography ) is an X ray imaging technique based on Bragg diffraction. Diffraction topographic images ( topographs ) record the intensity profile of a beam of X rays (or, sometimes, neutrons) diffracted by a crystal. A topograph thus… …   Wikipedia

  • Angle of incidence — is a measure of deviation of something from straight on , for example: in the approach of a ray to a surface, or the angle at which the wing or horizontal tail of an airplane is installed on the fuselage, measured relative to the axis of the… …   Wikipedia

  • Dynamical theory of diffraction — The dynamical theory of diffraction describes the interaction of waves with a regular lattice. The wave fields traditionally described are X rays, neutrons or electrons and the regular lattice, atomic crystal structures or nanometer scaled multi… …   Wikipedia

  • Röntgendiffraktometrie mit streifendem Einfall — Die Röntgendiffraktometrie mit streifendem Einfall (englisch grazing incidence X ray diffraction, GIXRD, manchmal auch nur GID für grazing incidence diffraction) ist ein spezielles Messverfahren der Röntgendiffraktometrie, die auf der… …   Deutsch Wikipedia

  • GID — might be an acronym or an abbreviation for: * Walter Halvorsen *Gender in Development *Gender identity disorder *General Improvement District *Gender, Institutions and Development Data Base *General Intelligence Department, the Jordanian… …   Wikipedia

  • List of materials analysis methods — List of materials analysis methods: Contents: Top · 0–9 · A B C D E F G H I J K L M N O P Q R S T U V W X Y Z μSR see Muon spin spectroscopy …   Wikipedia

  • Quantum reflection — is a physical phenomenon involving the reflection of a matter wave from an attractive potential. In classical physics, such a phenomenon is not possible; for instance when one magnet is pulled toward another, you do not expect one of the magnets… …   Wikipedia

  • Multiple-prism grating laser oscillator — Multiple prism grating laser oscillators,[1] or MPG laser oscillators, use multiple prism beam expansion to illuminate a diffraction grating mounted either in Littrow configuration or grazing incidence configuration. Originally, these narrow… …   Wikipedia

  • spectroscopy — spectroscopist /spek tros keuh pist/, n. /spek tros keuh pee, spek treuh skoh pee/, n. the science that deals with the use of the spectroscope and with spectrum analysis. [1865 70; SPECTRO + SCOPY] * * * Branch of analysis devoted to identifying… …   Universalium

Share the article and excerpts

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

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.