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X-RAY RUNS: Apply for Beamtime

2017  May 17 - Jun 29

2017  Nov 1 - Dec 21

The Fall G-Line Symposium was held on -

Tuesday, November 23, 2010
at 6:00 p.m.

Wilson Commons (3rd floor)

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The symposium featured a series of scientific presentations by graduate students and Post-docs whose research is based at CHESS/G-line and a brief overview of the G-line facility.

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Speakers and Talk Titles:

Christopher Pollock - Chemistry and Chemical Biology, Cornell University

"Development of Kβ X-ray Emission Spectroscopy"

     Abstract:  Investigation of iron intermediates in proteins is of utmost importance for understanding fundamental biological processes, such as oxygen transport and catalytic oxidations. The complicated nature of these protein systems, however, has presented challenges for traditional spectroscopic analysis, thus leaving numerous questions unanswered. Kβ x-ray emission spectroscopy (XES) is an element selective probe and holds promise to shed light onto these iron intermediates. Iron XES spectra have been recorded for a series of model complexes, establishing XES as a sensitive of metal oxidation, spin state, and ligand identity. Assignment of the mechanisms behind spectral intensity is investigated here, with particular attention paid to differences between σ-donating, π-donating, and π-accepting ligands. Knowledge of the intensity mechanisms will lead to a better understanding of spectral features, which in turn will aid in the application of XES to studies of iron intermediates in metalloproteins.

Michael Lowe - Chemistry and Chemical Biology, Cornell University
"In-Situ X-ray Studies of Manganese Oxide for Lithium Battery Anodes"

Michelle Chavis - Materials Science and Engineering, Cornell University
"Self-Assembly and Directed Morphology of Patternable Block Copolymers"