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X-ray emission spectroscopy: an effective route to extract site occupation of cations
In crystals, atoms sit at specific locations in the lattice. The arrangement is usually ordered, and properties can be predicted from such arrangements. Sometimes atoms become rearranged, swapping places, and then basic theories for material properties breakdown. In this work, we demonstrate a method to find the position of atoms in a more precise manner than typically used, and one which supplies more information about the atoms as well.
Solving protein structure from sparse serial microcrystal diffraction data at a storage ring synchrotron source
X-ray crystallography allows determination of the atomic structure of proteins, information that is essential to understanding the proteins. It was thought that there was a minimum size of crystal that could be used at storage ring x-ray sources. This paper shows that the minimum size barrier can be overcome.
A naturally occurring antibiotic active against drug-resistant tuberculosis
A naturally occurring antibiotic called kanglemycin A is effective against Mycobacterium tuberculosis, the bacteria that cause tuberculosis, even in drug-resistant strains, according to an international team of researchers who used chemistry, molecular biology, microbiology, and X-ray crystallography to show how the compound maintains its activity.
New Hutches Installed as CHESS-U Takes Shape
The construction portion of the CHESS-U upgrade is nearing completion as teams work to assemble the last of the experimental hutches. While there is still plenty of work to be done, the preparation for becoming a true 3rd-generation lightsource is paying off.
Striking the right balance of intermolecular coupling for high-efficiency singlet fission
Singlet fission is a form of unconventional energy conversion that multiplies excitations. It can be used to harvest spectrally broad light, such as the sun, more efficiently. The incorporation of this process into optoelectronic devices, such as solar cells, would significantly boost efficiencies and reduce cost.
CHESS Addresses the "Middle-Skills" Gap with Partnership
CHESS, a power-house of x-ray and accelerator physics and technology, requires the cultivation of local talent, specific skills, and a highly-trained workforce to build and maintain needed beamline and accelerator components.
Two-Color X-ray Emission Spectroscopy Probes Enzyme Mechanism from Human Pathogen
Using two-color valence-to-core x-ray emission spectroscopy, researchers from Penn State and CHESS uncover new details about enzyme mechanism.
Thinking Past CHESS-U, Students Make an Impact
Grace King, a rising Junior, majoring in Physics at Vassar College and studying Engineering at Dartmouth College, participated in the REU program at Cornell this summer, and her research project is quite timely, as CHESS and CESR are currently undergoing their biggest upgrade in decades.