Research Papers in Physics and Astronomy


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Published in Journal of Applied Crystallography 37 (2004), 672-674. Copyright 2004 International Union of Crystallography. Used by permission. Applied Crystallography Online:


The construction and use of a vacuum chamber suitable for conventional X-ray diffraction has revealed the influence of the ambient environment, including moisture, on the bulk structure of very thin polymer films. It is concluded that studies of thin film organic systems, even those thought not to be perturbed by ambient water vapor and other contaminants, may benefit from undertaking some studies in such small sample vacuum chambers.

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