John J. Rehr

Professor Rehr is an Emeritus Professor of Physics at the University of Washington, and Adjunct Faculty of Photon Science at SLAC. Professor Rehr is the Principal Investigator of the FEFF Project and leads the Theoretical X-ray Beamline of the European Theoretical Spectroscopy Facility (ETSF). Professor Rehr's research specialties are in condensed matter theory, with major interests in excited state electronic structure and the theory of x-ray and electron spectra. His group is well known for developing quantitative theories and ab initio codes for x-ray and electron-spectroscopies, as implemented, for example, in the FEFF codes.