Spectroscopy and Diffraction
Molecular level solid-, liquid- and gas-interactions can be investigated through structural, chemical and compositional analysis with remarkable atomic scale spatial and high-energy resolution spectrometers and diffractometers for novel fundamental research. See a complete list of Spectroscopy and Diffraction instruments.
Resources and Techniques
- Electron spectroscopy
- Electron backscatter diffraction
- Atom probe tomography
- Ion/molecular beam spectroscopy
- 57Fe-Mössbauer spectroscopy
- Optical spectroscopy
- X-ray tomography and diffractometers
Additional Information:
Molecular level solid-, liquid- and gas-interactions can be investigated through structural, chemical and compositional analysis with remarkable atomic scale spatial and high-energy resolution spectrometers and diffractometers for novel fundamental research. See a complete list of Spectroscopy and Diffraction instruments.
Resources and Techniques
- Electron spectroscopy
- Electron backscatter diffraction
- Atom probe tomography
- Ion/molecular beam spectroscopy
- 57Fe-Mössbauer spectroscopy
- Optical spectroscopy
- X-ray tomography and diffractometers
Additional Information:
![X-ray computed tomography](https://webarchive.library.unt.edu/web/20161226035022im_/https://www.emsl.pnnl.gov/emslweb/sites/default/files/capability-photos/x-ray.jpg)
Structure and Chemistry at the Buried Solid/Aqueous Solution Interfaces with Advanced Surface Nonlinear Spectroscopy
Controlling topotactic phase transitions in oxide thin films
Water condensation in unsaturated mineral-organic assemblages
The effect of trace element content on the rate of biotic and abiotic pyrite oxidation
Biogenic Particles Contribute to Formation of Aerosols
Nuclear Processing Science Initiative
In situ X-Ray Computed Tomography for study of glass melter operation
Defect Production, Diffusion and Precipitation in Ion-implanted Energy Materials
Model Ruthenium Oxide Catalysts for Biomass Conversion
Pages
Description
Capability Details
- Electron spectrometers with high spatial and energy resolution in-situ and ex-situ x-ray photoelectron spectroscopy
- Secondary ion mass spectrometers with single and cluster ion sources, and time-of-flight and magnetic mass analyzers
- Electron microscopes with energy dispersive X-ray spectroscopy, electron energy loss spectroscopy and electron backscatter diffraction
- Local Electrode Atom Probe tomography system with 355 nm UV laser and reflectron flight path for high mass resolution
- Fourier transform infrared spectrometers with vacuum bench and variable temperature capability
- Confocal-Raman, cryogenic time-resolved fluorescence, circular dichroism, stopped-flow absorbance, laser-induced breakdown and sum frequency generation optical tools
- Variable temperature Mössbauer spectroscopy systems for bulk (transmission mode) and surface (emission) measures
- X-ray diffraction instruments with sealed tube or rotating anode for analysis of powder, thin film and single crystal samples; point, CCD and image plate detection. X-ray computed tomography with 225- and 320-kV fixed, and 225-kV rotating target options using a 2000x2000 pixel area detector and state-of-the-art processing and visualization software
Electron spectroscopy – Achieving nanoscale spatial resolution, users can study elemental composition, structural properties, and chemical states of materials with applications to thin films, nanomaterials, catalysis, biological and environmental sciences, corrosion, and atmospheric aerosols.
Electron backscatter diffraction – Samples of microstructures in environmental and material science can be examined with three dimensional reconstruction and characterization using focused ion beam-electron backscatter diffraction analysis.
Atom probe tomography – Atom Probe Tomography (APT) provides comprehensive and accurate three dimensional chemical imaging for characterization of both metallic materials and low electrical conductivity materials, such as semiconductors, oxides, carbides, nitrides and composites.
Ion/molecular beam spectroscopy – Secondary ions and scattered ions from various materials are analyzed in straight, magnetic or time-of-flight mass spectrometers to investigate elemental, isotopic and molecular compositions through surface spectra, one dimensional depth profiling and two dimensional and three dimensional chemical imaging.
57Fe-Mössbauer spectroscopy – Using 57Fe (a versatile, highly sensitive, and stable isotope with natural abundance of 2.2%), users can obtain information about the valence state, coordination number and magnetic ordering temperatures for a wide range of Fe-containing samples; (e.g., Fe-organic matter complexes, sediments, catalysts, glass materials).
Optical spectroscopy – Fluorimetry, stopped-flow absorbance, FTIR and confocal-Raman tools enable analysis for biology, radiochemistry, and catalysis. Sum frequency generation-vibrational spectroscopy and second harmonic generation are available to study liquid, liquid and solid, and liquid interfaces.
X-ray tomography and diffractometers – X-ray computed tomography delivers images of microstructures (components, pore structure and connectivity) in biological and geological samples at tens of microns spatial resolution. General purpose and specialized x-ray diffraction systems, including single-crystal, microbeam and variable temperature powder capabilities, empower phase analysis of polycrystalline, epitaxial thin films, protein structure determination, and studies of problematic small inorganic molecules.
Instruments
Publications
Science Highlights
Instruments
Leads
![](https://webarchive.library.unt.edu/web/20161226035022im_/https://www.emsl.pnnl.gov/emslweb/sites/default/files/styles/thumbnail/public/user-photos/bowden_me.jpg?itok=z2YKGWkB)
Dr. Bowden manages EMSL's optical spectroscopy and diffraction, subsurface flow and transport, and microfabrication and deposition capabilities. He is responsible for the X-ray diffraction facility and assists or conducts measurement and...