Theoretical Atomic Physics

Keh-Ning Huang (L219)

Theoretical endeavors are directed at both structural and collisional studies of atoms. Major effortst are as follows.

1. Development of many-body dynamic theories
   1. Relativistic equations of motion.
   2. Multiconfiguration relativistic random-phase approximation theory.
   3. Many-body theory with parity-nonconserving weak neutral interactions.
   4. Few-body correlations in exotic atoms.
2. Spin polarization and angular correlations in electron-atom collisions
   1. Elastic and inelastic electron-atom scatterings.
   2. Electron-impact ionization of atoms and ions.
   3. Auger and radiative transitions following electron-atom collisions.
3. Photoionization of atoms
   1. Spin polarization, orientation, and coherence effects in photoionization processes.
   2. Fluorescence and Auger processes following photoionization.
4. Compilation of spectroscopic data
   1. Calculation of atomic transition data for various isoelectronic sequences.
   2. Energy-level and Grotrian diagrams of Fe and its ions.