Thomas M. Antonsen, Jr., Professor, was born in Hackensack, New Jersey, in 1950. He received his B.S. degree in electrical engineering in 1973, and his M.S. and Ph.D. degrees in 1976 and 1977, all from Cornell University. He was a National Research Council postdoctoral fellow at the Naval Research Laboratory in 1976-1977, and a research scientist in the Research Laboratory of Electronics at MIT from 1977 to 1980. In 1980 he moved to the University of Maryland where he joined the faculty of the Departments of Electrical Engineering and Physics in 1984. He is currently professor of physics and electrical engineering.

Prof. Antonsen has held visiting appointments at the Institute for Theoretical Physics (UCSB), the Ecole Polytechnique Federale de Lausanne, Switzerland, and the Institute de Physique Theorique, Ecole Polytechnique, Palaiseau, France. He was selected as a fellow of the Division of Plasma Physics of the American Physical Society in 1986.

Prof. Antonsen's research interests include the theory of magnetically confined plasmas, the theory and design of high power sources of coherent radiation, nonlinear dynamics in fluids, and the theory of the interaction of intense laser pulses and plasmas. He is the author or co-author of over 140 journal articles and co-author of the book "Principles of Free-Electron Lasers." Prof. Antonsen has served on the editorial board of Physical Review Letters, The Physics of Fluids, and Comments on Plasma Physics.

He is a Fellow of the American Physical Society, and a Fellow of the Institute of Electrical and Electronic Engineers.

Professor O'Shea's experimental and theoretical research is in the area of charged particle beam physics and technology, and applications.

Professor Kishek's research interests revolve on the electrodynamics of swarms of particles interacting through long range forces.

Ralph Fiorito, Senior Research Faculty, did his graduate studies in physics at the Catholic University of America, Washington, DC (M.S.E. in space plasma physics; Ph.D. in magnetic resonance) and postgraduate studies in charged particle beam and plasma physics at the University of Maryland, College Park. His research interests include beam physics, beam diagnostics, beam based radiation sources and high energy astrophysics.

From 1973-1997 Dr. Fiorito was employed as a research physicist at the Naval Surface Warfare Center in Silver Spring, MD where his research focused on the radiation from intense electron beams and their with matter. From 1978-1979 he was a visiting scientist at the Naval Research Laboratory (Division of Plasma Physics) and, in 1981, at the Lawrence Livermore National Laboratory (Beam Research Division). Since 1998 he has been an Associate Research Professor at the Catholic University of America in Washington, DC, and for the past four years held the position of Visiting Senior Research Scientist at University of Maryland. He has collaborated with many national and international research institutes, including Los Alamos, Lawrence Livermore, Argonne and Thomas Jefferson National Laboratories, NASA’s Goddard Space Flight Center, private industry and universities in the US, Europe and the Former Soviet Union.

In 1995 he received the Navy Civilian Service Award for his work in charged particle beam technologies, and in 1993 was the co-recipient of the Faraday Cup Award for the invention and development of Optical Transition Radiation (OTR) Beam Emittance Diagnostics. He has recently (2003) been elected Fellow of the American Physical Society (Division of Beams) for his contributions to the understanding and application of transition, diffraction and parametric x-radiation.

Anatoly Shkvarunets, Senior Research Scientist, received his bachelor's degree in physics from Moscow State University, Russia, in 1970. He held a Lebedev Physical Institute Graduate Fellowship from 1972 to 1975 and received his Ph.D. degree in physics and mathematics in 1977 from the same institute. Since 1975, he has been a Junior and Senior Research Associate at Lebedev Institute and later at the General Physics Institute in Moscow. In 1994, he came to the Institute for Plasma Research at the University of Maryland, College Park as a visiting scientist. He is now an Assistant Research Scientist at IREAP.

Dr. Shkvarunets has investigated relativistic electron beam (REB) plasma interaction for REB transport plasma heating and microwave oscillation as well as plasma characterization and plasma wave excitation. He has given over 20 conference presentations and published more than 40 papers in the area of REB-plasma interaction and high power microwaves.

Donald W. Feldman, Technical Consultant, received his Ph.D. from the University of California, Berkeley in 1959. He joined the staff of the Westinghouse Research Laboratory, where he was a Fellow Scientist until 1984. He was a Staff Member of The Los Alamos National Laboratory until 1993. He is currently a visiting scientist at the University of Maryland.

Dr. Feldman's research interests have included experimental solid state physics including field emission microscopy, nuclear magnetic resonance, electron paramagnetic resonance, Raman spectroscopy, laser development, free electron lasers, and photo cathode development. He is a member of the American Physical Society and the Directed Energy Professional Society.

Henry Freund, Visiting Senior Research Scientist, received his Ph.D. in physics from the University of Maryland (1976) and is currently a Senior Research Physicist with Science Applications International Corp where he has worked since 1979.

Dr. Freund's work in the field of FELs includes analytic investigation of the orbital stability of relativistic electron beams in the undulator magnetic fields, as well as the spontaneous and stimulated emission of radiation. He has made important contributions to both theory and simulation for FELs operating over virtually the entire spectrum. In recognition of his contributions to these fields, he has been elected a Fellow of the American Physical Society. He has published more than 140 papers in refereed journals, made numerous contributions to books and published proceedings. Dr. Freund serves on the program committee of the annual FEL conference, has organized conferences on Electron Beam Sources of High Brightness Radiation for the SPIE. He serves on the review board for the Navy's High Power Infrared Demonstration FEL Project at the Thomas Jefferson Laboratory.

Kevin Jensen, Visiting Senior Research Scientist, received the B.S. degree in applied physics from Columbia University, New York, in 1981, and the M.S. and Ph.D. degrees in physics from New York University, New York, in 1984 and 1987, respectively. In 1987, he joined the Naval Research Laboratory and continues his work there in the Semiconductors Branch of the Electronics Science and Technology Division (ESTD).

Dr. Jensen's research interests are in field, thermionic, and photo-emission, quantum transport, and electron device physics particularly as they apply to rf vacuum electronics and space-based applicaitons. He is a member of the IEEE, the American Physical Society, the New York Academy of Sciences, the Materials Research Society, and the Electrochemical Society.

Renée Feldman, Faculty Research Assistant, received her M.S. in Computer Science in 1972 from the University of Pittsburgh, Pittsburgh, Pa. She received her B.A. in Physics in 1957 from the University of California, Berkeley. She consulted for Westinghouse Research Laboratory in physics and engineering until 1984, when she became a Staff Member at Los Alamos National Laboratory, writing software for the real time profiling and display of electron beam images in the Los Alamos Free Electron Laser. After retirement, in 1994, she worked for half a year at Bruyeres le Chatel in France, writing electron beam profiling codes. She is now a visiting scientist at the University of Maryland.

Her interests include computer control of instrumentation and electron beam profile analysis.

Graduate Students