• Theoretical Condensed-Matter Physics
• Theoretical Elementary Particle Physics
• Astrophysics and General Relativity
• Experimental Elementary Particle Physics
• Accelerator Physics
• Experimental Condensed-Matter Physics
• Biological Physics
• Multidisciplinary Research
• Major Research Facilities
• Resources for Researchers

B.A., 1943, University of Cambridge. Ph.D., 1950, University of Cambridge. Research Associate, Laboratory of Nuclear Studies, Cornell University, 1950-54. Research Associate, General Electric Research Laboratory, Schenectady, New York, 1954-55. Research Associate Professor, Physics, Cornell University, 1954-62. Research Professor, Physics, Cornell, 1962-65. Professor, Physics, Cornell, 1965-98. Chairman, Department of Physics, Cornell University, 1974-77. Professor Emeritus, Physics, Cornell University, 1998-present. Visiting Appointments at: University of Sydney (Radio Astronomy); Laboratori Nazionali di Frascati, Roma; Laboratoire de l'Accelerateur Lineaire, Orsay; CERN, Geneva. National Science Foundation Senior Fellow, 1962, 1968. Fellow, American Physical Society.

Research Areas
High-energy physics; electronic instrumentation; accelerator physics

Current Research
Creation, application and evaluation of on-line interactive instructional materials, including on-line "intelligent" tests.

Spotlight

Michael Ehrlichman, graduate student, is working in Professor Georg Hoffstaetter’s group researching the effect of ionized residual gas on particle accelerator beams.  Residual gas molecules ionized by charged particle beams can become trapped in the potential well of the beam.  These trapped ions exert a nonlinear focusing force on the beam that can reduce beam quality.  The ions can also undergo coupled oscillations with the beam.  These coupled oscillations can become unstable and increase the effective dimensions of the beam or ...
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