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Gregory W.
Hammett Office: C-Site A137 Phone: (609) 243-2495 email: ghammett@pppl.gov webpage: https://w3.pppl.gov/~hammett |
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Dr. Hammett is a principal research
physicist at the Princeton Plasma Physics Laboratory (PPPL), and a
lecturer in the Department of Astrophysical Sciences, Program in Plasma
Physics, at Princeton University. He was selected a fellow of the
American Physical Society in 1997. Dr. Hammett specializes in computational
and theoretical studies of the complex physics of plasma turbulence.
He and his collaborators developed computer simulations of tokamak
plasma turbulence which are successful in matching the core plasmas
of a wide range of experiments. Their present work is on improving
the accuracy of such simulations and extending them to a wider range
of plasma conditions, and on ways to suppress the turbulent loss of
heat from a plasma, which could lead to a more economical fusion power
plant. His work on fluid models of Landau-damping (which extends fluid
equations to the long-mean-free-path limit where traditional closure
approximations break down) has been cited in over 100 published papers,
finding application to diverse fields such as Alfven turbulence in
space physics, Langmuir turbulence in the ionosphere, plasma processing
of semiconductors, laser filamentation and other laser-plasma processes,
and MHD instabilities, as well as his own specialty of plasma turbulence
in fusion devices. He has supervised several Ph.D. students, and was
on the executive committee for the national Numerical Tokamak Project,
a computational "grand challenge" project which employed
the latest in massively parallel supercomputers. Dr. Hammett received
a B.A. in physics from Harvard University and a Ph.D. in Astrophysical
Sciences, Plasma Physics Section, from Princeton University. |
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