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The Phase of Scattering Profiles & X-Ray/Neutron Reflectivity

Published online by Cambridge University Press:  22 February 2011

P.S. Pershan
P.S. Pershan*
Affiliation:
Division of Applied Sciences and the Physics Department, Harvard University, Cambridge, MA 02138-2901 USA, PACS No. 61.10.-i X-ray determination of structures by diffraction and scattering. 61.12.-q Neutron determination of structures by diffraction and scattering.
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Abstract

The phase problem that troubles x-ray diffraction is also a problem for x-ray and neutron reflectivity; however, there are a range of small angles just beyond the critical angle for which the reflectivity contains information on the phase of the surface scattering amplitude. In principle this phase information can be used to determine the asymmetry of the normal gradient of the scattering amplitude density. We discuss here practical conditions under which this symmetry can, or cannot, be extracted from reflectivity data.

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Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 376: Symposium BB – Neutron Scattering in Materials Science , 1994 , 157
Copyright
Copyright © Materials Research Society 1995

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References

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