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X-ray Birefringence from a Model Anisotropic Crystal

DOI: 10.1021/jz201026z DOI Help

Authors: Benjamin Palmer (University of Cardiff) , Anabel Morte-rodenas (Cardiff University) , Benson M. Kariuki (University of Cardiff) , Kenneth .d.m. Harris (University of Cardiff) , Steve Collins (Diamond Light Source)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: The Journal Of Physical Chemistry Letters , VOL 2 (18)

State: Published (Approved)
Published: August 2011

Abstract: While the phenomenon of birefringence is well established and widely applied in the case of linearly polarized visible light (for example, underpinning the use of the polarizing optical microscope), the study of birefringence using linearly polarized X-rays is an essentially unexplored field. To address this issue, we report a material that exhibits ideal birefringence behaviour at X-ray energies near the Br K-edge. The designed material, the 1-bromoadamantane/thiourea inclusion compound, gives experimental behaviour in excellent agreement with theoretical predictions for the dependence of transmitted X-ray intensity on both X-ray energy and crystal orientation. Our results vindicate the potential to exploit X-ray birefringence to establish a detailed understanding of molecular polarization, particularly as an experimental strategy to determine the orientational distributions of specific bonds in solids, for example in the case of partially ordered materials or materials that undergo order-disorder phase transitions.

Subject Areas: Physics, Chemistry

Instruments: I16-Materials and Magnetism

Added On: 30/08/2011 11:15

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