Sigray QuantumLeap X-Ray Absorption Spectroscopy (XAS) System

Chemical Specification and Electronic Structure with X-Ray Absorption Spectroscopy

With QuantumLeap, researchers will now be able to identify and quantify the chemical species of elements of interest for applications such as:

  • Catalysts: chemical states of oxides, nitrides, and carbides being explored as catalysts
  • Batteries/fuel cells/solar cells: oxidation state of transition metals (e.g. in lithium ion batteries) as a function of charge and discharge cycles
  • Nanoparticles and nanomaterials: structural analysis, coordination number, disorder, geometry, reactivity

Sigray’s QuantumLeap™ brings the long-awaited power of X-ray absorption spectroscopy (XAS) – a synchrotron technique for determining electronic structure of elements – to individual laboratories. Powerful access to synchrotron-grade XANES within minutes at sub-eV resolution and EXAFS at seconds to minutes.

 

The patented FAAST™ microfocus x-ray source (Fine Anode Array Source Technology) is based on a complete new x-ray source design.  The x-ray target is made out of fine metal microstructures that are encapsulated in a diamond substrate. This complete new design was enabled due to recent developments in semiconductor processing techniques.

Sigray XANES
QuantumLeap’s XANES off-Rowland geometry: Sample is placed within the Rowland circle to enable simultaneous
detection of multiple wavelengths (rather than a single-energy low throughput approach); by using Johanson crystals coupled
with a high resolution CCD, the energy resolution is <0.5 eV.
Sigray EXAFS
Sigray Quantum-
Leap’s EXAFS geometry: von Hamos geometry is a high throughput approach that detects a wide energy spectrum simultaneously using a mosaic crystal.

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FEATURES

  • Unprecedented ability to analyse electronic (chemical) state of elements
  • First laboratory micro-XANES system, providing spatial resolution down to 10 μm
  • XANES mode for oxidation state analysis and bond covalency (down to 0.1 eV)
  • EXAFS mode for coordination number, types of donors bound, and interatomic distances (<10 eV)
  • FAAST™ microfocus X-ray source with 50x higher brightness than sources used in existing non-synchrotron microXRFs due to innovative X-ray target material design
  • X-ray mirror lens unique design collects 10x more fluorescence X-rays versus conventional designs
  • More powerful source, high efficiency optics and unique paraboloidal geometry results in >100x sensitivity than existing non-synchrotron microXRFs
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David Want Quantum Design UK and Ireland
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DR SHAYZ IKRAM

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