XAFS Journal Club
Jerry Seidler: What is X-ray Raman Scattering, and What Did Raman Have to Do With It?
X-ray Raman Scattering (XRS, often also called nonresonant inelastic x-ray scattering), is a hard x-ray alternative to soft x-ray NEXAFS. I'll review the basic physics, including the role of momentum transfer to tune selection rules. And I'll explain Raman's involvement, or lack thereof. References: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.74.214117 and https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.105.053202 https://www.youtube.com/watch?v=kuKA81-R7-w
Simo Huotari: X-ray Raman spectroscopy: glimpse of the state of the art for samples in complex environments
In this lecture I will continue where the previous lecture ends and talk about some examples of how XRS is used to study materials under high pressure and chemical reactions. References: https://www.nature.com/articles/nmat3031 and https://pubs.acs.org/doi/abs/10.1021/jp912208v https://www.youtube.com/watch?v=mGD3HqwaitU&t=1205s
Evan Jahrman Core-to-core X-ray Emission Spectroscopy: Pitfalls and Advantages for Lab-based and Synchrotron Users
Core-to-core X-ray emission spectroscopy (CTC-XES) has not only provided key insights into atomic physics but is extremely well positioned to serve as a major analytical technique for several materials systems in the coming decades. Moreover, CTC-XES frequently serves as an enabling phenomenon for more exotic varieties of synchrotron-based XAFS. I will cover several applications of […]
Adam Hitchcock: Soft X-ray Spectromicroscopy in Scanning Transmission X-ray Microscopes
Soft X-ray scanning transmission microscopy (STXM) is a powerful tool for nanoscale materials analysis, with significant advantages over analytical electron microscopies for studies of radiation sensitive materials. Chemical species identified by near edge X-ray absorption fine structure (NEXAFS) spectra can be mapped quantitatively in 2D and in 3D. STXM instrumentation and methods will be described, […]