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High resolution, monochromatic x-ray topography capability at CHESS

MetadataDetails
Publication Date2016-01-01
JournalAIP conference proceedings
AuthorsK. D. Finkelstein, Ryan M. Jones, Alan Pauling, Zuben P. Brown, Alvarado Tarun
InstitutionsCornell University, St. Mary’s College of Maryland
Citations1

CHESS has a monochromatic x-ray topography capability serving continually expanding user interest. The setup consists of a beam expanding monochromator, 6-circle diffactometer, and CHESS designed CMOS camera with real time sample-alignment capability. This provides rocking curve mapping with angle resolution as small as 2 µradians, spatial resolution to 3 microns, and field of view up to 7mm. Thus far the capability has been applied for: improving CVD-diamond growth, evaluating perfection of ultra-thin diamond membranes, correlating performance of diamond-based electronics with crystal defect structure, and defect analysis of single crystal silicon carbide. This paper describes our topography system, explains its capabilities, and presents experimental results from several applications.