Research
Thrusts
.... .Nanostructures
.... .Biomimetics
..... Bio-Nano
John R. Sabin - My research interests include theoretical studies of energy deposition in materials by swift ions. This includes studies of dipole and generalized oscillator strength distributions and full electron-nuclear dynamics studies of collisions from keV/amu to MeV/amu energies. Emphasis is on molecular targets. Other interests include theoretical prediction of the properties of molecules in high magnetic fields. The characteristics of the deposition of energy in matter by swift, massive particles is of interest in areas ranging from design of inertial confinement fusion devices to radiation therapy. The understanding and prediction of the processes involved in such energy deposition provide the unifying theme of my research. The research program has three distinct but interrelated parts dealing with:
- stopping in atoms and molecules, with especial emphasis on aggregation effects such as deviations from the Bragg rule, solid/gas sample phase effects, and stopping in large molecules
- stopping in ultra-thin (several atomic layers) films as models for imbedded layers, overlayers and interfaces and as intermediates between gas and solid targets
- trajectory dependent stopping if swift ions under channeling conditions in bulk targets, with emphasis on implantation profiles and exit energy/angle distribution