About: Dynamic structure factor     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : owl:Thing, within Data Space : dbpedia.org associated with source document(s)
QRcode icon
http://dbpedia.org/describe/?url=http%3A%2F%2Fdbpedia.org%2Fresource%2FDynamic_structure_factor&graph=http%3A%2F%2Fdbpedia.org&graph=http%3A%2F%2Fdbpedia.org

In condensed matter physics, the dynamic structure factor (or dynamical structure factor) is a mathematical function that contains information about inter-particle correlations and their time evolution. It is a generalization of the structure factor that considers correlations in both space and time. Experimentally, it can be accessed most directly by inelastic neutron scattering or X-ray Raman scattering. The dynamic structure is exactly what is probed in coherent inelastic neutron scattering. The differential cross section is : where is the scattering length.

AttributesValues
rdfs:label
  • Dynamic structure factor (en)
  • 動的構造因子 (ja)
rdfs:comment
  • 散乱理論における動的構造因子とは、粒子の運動の時間相関および空間相関を特徴づける量である。 動的構造因子は二体相関関数 の空間および時間についてのフーリエ変換で定義される。 ここでは原子密度の空間的変動を記述する演算子である。この二体相関関数は,時刻0の時にある位置にいた粒子と,時刻tの時に位置にある粒子との相関を表す。 また動的構造因子のエネルギー積分のことを静的構造因子と呼ぶ。 (ja)
  • In condensed matter physics, the dynamic structure factor (or dynamical structure factor) is a mathematical function that contains information about inter-particle correlations and their time evolution. It is a generalization of the structure factor that considers correlations in both space and time. Experimentally, it can be accessed most directly by inelastic neutron scattering or X-ray Raman scattering. The dynamic structure is exactly what is probed in coherent inelastic neutron scattering. The differential cross section is : where is the scattering length. (en)
dcterms:subject
Wikipage page ID
Wikipage revision ID
Link from a Wikipage to another Wikipage
Link from a Wikipage to an external page
sameAs
dbp:wikiPageUsesTemplate
has abstract
  • In condensed matter physics, the dynamic structure factor (or dynamical structure factor) is a mathematical function that contains information about inter-particle correlations and their time evolution. It is a generalization of the structure factor that considers correlations in both space and time. Experimentally, it can be accessed most directly by inelastic neutron scattering or X-ray Raman scattering. The dynamic structure factor is most often denoted , where (sometimes ) is a wave vector (or wave number for isotropic materials), and a frequency (sometimes stated as energy, ). It is defined as: Here , is called the intermediate scattering function and can be measured by neutron spin echo spectroscopy. The intermediate scattering function is the spatial Fourier transform of the van Hove function : Thus we see that the dynamical structure factor is the spatial and temporal Fourier transform of van Hove's time-dependent pair correlation function. It can be shown (see below), that the intermediate scattering function is the correlation function of the Fourier components of the density : The dynamic structure is exactly what is probed in coherent inelastic neutron scattering. The differential cross section is : where is the scattering length. (en)
  • 散乱理論における動的構造因子とは、粒子の運動の時間相関および空間相関を特徴づける量である。 動的構造因子は二体相関関数 の空間および時間についてのフーリエ変換で定義される。 ここでは原子密度の空間的変動を記述する演算子である。この二体相関関数は,時刻0の時にある位置にいた粒子と,時刻tの時に位置にある粒子との相関を表す。 また動的構造因子のエネルギー積分のことを静的構造因子と呼ぶ。 (ja)
prov:wasDerivedFrom
page length (characters) of wiki page
foaf:isPrimaryTopicOf
is Link from a Wikipage to another Wikipage of
is Wikipage redirect of
is known for of
is known for of
is foaf:primaryTopic of
Faceted Search & Find service v1.17_git139 as of Feb 29 2024


Alternative Linked Data Documents: ODE     Content Formats:   [cxml] [csv]     RDF   [text] [turtle] [ld+json] [rdf+json] [rdf+xml]     ODATA   [atom+xml] [odata+json]     Microdata   [microdata+json] [html]    About   
This material is Open Knowledge   W3C Semantic Web Technology [RDF Data] Valid XHTML + RDFa
OpenLink Virtuoso version 08.03.3330 as of Mar 19 2024, on Linux (x86_64-generic-linux-glibc212), Single-Server Edition (62 GB total memory, 60 GB memory in use)
Data on this page belongs to its respective rights holders.
Virtuoso Faceted Browser Copyright © 2009-2024 OpenLink Software