X-ray standing wave applications in crystallography

The X-ray Transform and its Application in Nano Crystallography

In this article a review on the definition of the X- ray transform and some ofits applications in Nano crystallography is presented. We shall show that the X- raytransform is a special case of the Radon transform on homogeneous spaces when thetopological group E(n)- the Euclidean group - acts on ℝ2 transitively. First someproperties of the Radon transform are investigated then the relationship ...

Scattering: X-Ray Standing Wave Techniques

Introduction The X-ray standing wave (XSW) technique provides an element-specific structural probe by using x-ray reflectivity to generate a " two-beam " interference field that in turn induces a spatial dependence to the x-ray spectroscopic yields from atoms within the field. The XSW technique is primarily used for resolving the atomic-scale structure at surfaces, interfaces, and thin films wi...

Review x Ray crystallography

x Ray crystallography is currently the most favoured technique for structure determination of proteins and biological macromolecules. Increasingly, those interested in all branches of the biological sciences require structural information to shed light on previously unanswered questions. Furthermore, the availability of a protein structure can provide a more detailed focus for future research. ...

X-ray Standing Wave at the Total Reflection Condition

Fresnel theory is used to derive the complex electric fields above and 7 below an X-ray– reflecting interface that separates two materials with 8 differing refraction indices. The interference between the incident and 9 reflected waves produces an X-ray standing wave (XSW) above the 10 reflecting interface. The XSW intensity modulation is strongly enhanced 11 by the total external reflection co...

X-ray Standing Wave Studies of Minerals and Mineral Surfaces: Principles and Applications