High Resolution Soft X-Ray Fluorescence Spectrometer.
BOSTON UNIV MA DEPT OF PHYSICS
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This grant was for the purchase of a high resolution x-ray fluorescence spectrometer based on the novel design of Professor Joseph Nordgren of Uppsala University in Sweden. Although initially we planned to construct the instrument, we eventually purchased the first such commercially available spectrometer from Gammadata of Uppsala, Sweden and arrived in December 1996. Purchasing the complete spectrometer had numerous advantages for our program, most notably the delivery of a working, calibrated unit from the group that invented the design. Using both this newly arrived instrument, and an identical spectrometer made available to us via a collaboration with Professor Nordgren, we have performed exploratory experiments on wide band gap semiconductors, organic superconductors, and quasi-low dimensional transition metal oxides. Results of these experiments are very encouraging, and prove the feasibility of our program. In particular, we measured the partial density of states of occupied and unoccupied states in GaN, measured the layer specific electronic structure in selected organic superconductors, and explored the effect of band dimensionality on emission from solids.
- Atomic and Molecular Physics and Spectroscopy