ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
A new experimental geometry for simultaneously mapping the rocking curves of a sample over a one- or two-dimensional array of points on the sample has been developed. The 422 asymmetric diffraction of Cu Kα1 radiation with a monolithic channel-cut silicon crystal angularly collimates and spatially expands the x-ray beam. A cooled Reticon linear photodiode array with 25-μm spatial resolution was used for the one-dimensional detector. Compared with the commonly used double-crystal diffractometer method, more information can be obtained from the present method, for example, characterization of the minute local misorientation of subgrains and the precise determination of the curvature of a crystal. The uniformity of the crystal quality and the local variation of the curvature of the crystal planes over a sample can also be revealed from the contour map of the rocking curves. Maps of the rocking curves of several samples have been collected using this method.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1144018
Permalink