Research Associate
Center for Integrated Plasma Studies
University of Colorado
Ph.D. 1969, University of Wisconsin

Office: Gamow Tower room F925
Phone: 303-492-5535
Fax: 303-492-0642

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Research

My research interests lie mainly in applications of Hamiltonian dynamics to a wide variety of physical problems, including dust dynamics, asteroidal satellites, microwave ionization of Rydberg atoms, and RF ion traps. In addition I collaborate with Applied Mathematics faculty on dynamics problems and Aerospace Engineering faculty on sonic-boom simulations. I also work in such areas as nearly axisymmetric systems, martian dust-rings and the epicyclic motion of saturnian dust-grains, asteroidal satellites, as well as the stability of extrasolar planets around binary stars.

Research Group

Celestial Mechanics and Dynamical Systems

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Selected Publications

“Epicyclic Description of Dust Grain Orbits about Saturn,” J. Geophys. Res. 108, 1179 (2003). (with M. Horányi and C. Mitchell)

“The Role of Magnetic Tilt in Jovian Dust Dynamics,” 23rd Annual Meeting of the Division of Planetary Science, Monterey, CA, October 2003.

"Transverse halo orbits about Mars?", Geophys. Rev. Lett. 30, 1680 (2003). (with A.V. Kirivov and F. Spahn).

"Stability of halo orbits", Phys. Rev. Lett. 84, 3244 (2000). (with H.R. Dullin and M. Horányi.

"Nonkeplerian dust dynamics at saturn", Geophys. Rev. Lett. 28, 1907 (2001). (with M. Horányi)

"Orbital dynamics about a slowly rotating asteroid", Geophys. Rev. Lett. 29, 94 (2002). (with T.D Wilkerson and J.N. Cantrell)

"Generalizations of the Störmer Problem for dust grain orbits", in Physica D 171, 178 (2002). (with H.R. Dullin and M. Horányi)

Nontwist Maps, Encyclopedia of Nonlinear Science, Ed. A. Scott, (Fitzroy-Dearborn, London, 2005).

Regular and Chaotic Dynamics in Atomic Physics, Encyclopedia of Nonlinear Science, Ed. A. Scott (Fitzroy-Dearborn, London, 2005).