transport theories, the effect of the current profile on tokamak confinement, fine-scale structure of the temperature profile, and methods to control and suppress anomalous transport. In addition, he clarified the general interpretation of the motional Stark effect and vertical charge-exchange-recombination diagnostics. He has collaborated on other experiments in the United Kingdom, Japan, and Germany, as well as in the United States. Dr. Zarnstorff was a co-discoverer of the Supershot and Enhanced-Reversed-Shear regimes of enhanced confinement in TFTR. In 1995, he was named a distinguished research fellow of PPPL. He teaches in the Astrophysical Sciences Department at Princeton University. He is a fellow of the American Physical Society and served as a DPP/APS distinguished lecturer. He has served on numerous review and advisory committees within the fusion program. His current research focus is on understanding how three-dimensional shaping of magnetic fields and equilibria affects plasma MHD stability and transport.

ELLEN G. ZWEIBEL is professor of astronomy and physics at the University of Wisconsin at Madison, where she moved in January 2003. Previously she was a professor of astrophysics and a fellow of the Joint Institute for Laboratory Astrophysics at the University of Colorado at Boulder. She chaired her department from 1989 to 1992 and chaired JILA from 2000 to 2002. Her research interests are theoretical astrophysics and plasma science. Dr. Zweibel was a member of the NRC’s Committee on Astronomy and Astrophysics, the Committee on Strengthening the Linkages Between the Sciences and Mathematics, the Plasma Science Committee, the Panel on Opportunities in Plasma Science and Technology, and the Theoretical Astrophysics and Solar Astrophysics panels of the Astronomy and Astrophysics Survey Committee in 1991 and 2001. She is a fellow of the American Physical Society. She received a Ph.D. in astrophysical sciences from Princeton University in 1977.

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