Donald Geesaman is a Distinguished Argonne Fellow and a former director of the Physics Division at Argonne National Laboratory. After his Ph.D. in 1976, he joined Argonne and was promoted to senior physicist in 1991 and Distinguished Argonne Fellow in 2008.
Dr. Geesaman’s recent research focuses on understanding the implications of nucleon substructure in nuclear physics and on understanding the structure of nuclei. This includes measurements of deep inelastic muon scattering at FNAL, measurements of the anti-quark distributions of the proton in Drell-Yan experiments at FNAL, and experiments at Jefferson Lab to examine the structure of the proton and its meson fields in the nuclear medium. The nuclear structure work includes electron scattering studies.
He was elected the Chair of the Division of Nuclear Physics of the American Physical Society for 2004-2005. He has served on the Board of the Directors of users groups at M.I.T. Bates, LAMPF, and Jlab, Program Advisory Committees at IUCF, M.I.T. Bates, Jlab, BNL, and GSI, been the chair of the Board of Directors of the Jefferson Lab Users Group and chair of the Jefferson Lab Program Advisory Committee.
Dr. Geesaman has also served on the Nuclear Science Advisory Committee, numerous NSAC subcommittees and long-range plan working groups and on the OECD Global Science Forum Working Group for Nuclear Physics. He was an associate editor of Physical Review C and is currently an editor of Physics Letters B.
He is the author of more than 100 scientific publications.