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Gabrielle Long Distinguished Speaker Series
March 14, 2005- 3:00pm- Chester F. Carlson Center for Imaging Science- 1125

The Art and Science of X-Ray Imaging


Abstract:Third generation synchrotron x-ray sources provide brilliant, collimated, linearly polarized, partially coherent x-ray beams that enable a new generation of x-ray imaging techniques. Results are enabling significant advances in our understanding of fuel spray technology, small animal physiology, composite materials, magnetic materials, and agricultural science. We will show examples from microsecond time-resolved radiographic imaging, phase contrast imaging, ultra-small-angle x-ray scattering (USAXS) imaging, x-ray microtomography, and x-ray holography. Perhaps most exciting, and just on the horizon, is coherent diffraction imaging, which “images” nonperiodic structures such as those of protein molecules that cannot be crystallized.

Bio: Dr. Gabrielle Long received her Ph.D. in condensed matter physics from the Polytechnic Institute of Brooklyn (now Polytechnic University) in 1972. She conducted research and taught at Columbia University, Vassar College and the State University of New York at Stony Brook before joining the National Institute of Standards and Technology (NIST) in 1980. At NIST, Long was in the Ceramics Division where she led the Materials Microstructural Characterization Group. She conceived, built, commissioned, and operated unique national facilities at the National Synchrotron Light Source and the Argonne Photon Source that enable the atomic, molecular, microstructural, interfacial, and surface characterization of materials at levels previously unattainable and she has been a leader in the use of these facilities to resolve important issues in materials science. Long’s research interests include microstructure characterization of ceramics, nanoscale materials, and plasma-sprayed coatings and free standing structures. She has long-standing interests in materials deformation, small-angle scattering and x-ray optics, x-ray inelastic scattering, anomalous scattering, and dynamical diffraction by imperfect (real) crystals. Her leadership and scientific achievement have garnered much recognition, including a Department of Commerce bronze medal for her work in materials science. She was Argonne’s Maria Goeppert Mayer Distinguished Scholar in 2001. Dr. Gabrielle Long is a fellow of the American Physical Society and a member of the Materials Research Society, as well as Sigma Xi. In 2004 Dr. Long was named a Fellow of the American Association for the Advancement of Science (AAS) for her "outstanding leadership in the development and application of advanced X-ray and neutron measurement techniques for materials analysis." Dr. Long has co-authored over 115 papers and has served as lead editor of a volume on synchrotron radiation instrumentation. In 2003, Dr. Long was appointed associate division director for X-ray Operations and Research (XOR) at Argonne National Labs.. There she plays a major administrative role in overseeing the activities of XOR -- the division whose responsibilities include the management of all beamlines and beamline research associated with the Advanced Photon Source (APS).