Open AccessCost‐effective upgrade of a focusing system for inelastic X‐ray scattering experiments under high pressure
Author(s) -
Huang ChiYi,
Cai Yong Q.,
Hiraoka Nozomu,
Chen ChengChi,
Chung ShihChun,
Song YenFang,
Tsang KingLong
Publication year - 2008
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049507055884
Subject(s) - upgrade , inelastic scattering , x ray , resonant inelastic x ray scattering , scattering , nuclear engineering , inelastic neutron scattering , physics , computer science , nuclear physics , optics , engineering , operating system
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 mm 3 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.