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Temporal Coherence in Surface x-ray Standing Waves (1406.3581v1)

Published 13 Jun 2014 in cond-mat.mes-hall and cond-mat.mtrl-sci

Abstract: We present a unified elucidation for the role temporal coherence properties of x-rays in surface x-ray standing wave analysis, under total external reflection condition. Analytical formulas have been derived that provide a direct relation between the intensity distribution of x-ray standing wave (XSW) pattern and complex degree of coherence of the incoming x-rays. The novelty of the proposed method has been demonstrated experimentally together with the theoretical results for a real application by analyzing the distribution of metal nanoparticles on a Si mirror surface. Our results demonstrate that the modified XSW approach opens up an opportunity to unambiguously interpret structural studies of large dimension nanostructure materials of height 200nm (or more), deposited on a substrate surface.

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