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Cost-effective upgrade of a focusing system for inelastic X-ray scattering experiments under high pressure

Authors
Journal
Journal of Synchrotron Radiation
0909-0495
Publisher
International Union of Crystallography
Publication Date
Volume
15
Issue
1
Identifiers
DOI: 10.1107/s0909049507055884
Keywords
  • Research Papers

Abstract

Inelastic X-ray scattering (IXS) is a powerful technique capable of probing the dynamic behavior and electronic structure of materials. For IXS experiments under high pressure up to the megabar range using state-of-the-art diamond-anvil-cell technology, the sample volume is limited to the order of 1 × 10−3 mm3 for which a beam focus of the same order and less is often required. In this paper a scheme utilizing a set of low-cost and compact Kirkpatrick–Baez mirrors for upgrading the existing optical system of the Taiwan IXS beamline at SPring-8 is described. The scheme as implemented improves the focus to 13 µm × 16 µm (horizontal × vertical) with a transmission of up to 72% and a flux density gain of over 30 times, which has enhanced substantially the efficiency of the beamline for high-pressure research.

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