| 1982-1987 |
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University of Chicago, Chicago, Ph.D. |
| 1981-1982 |
University of Oslo, Oslo, Norway |
| 1981 (Summer) |
International Summer School, University of Oslo, Oslo, Norway |
| 1977-1981 |
Rice University, Houston, B.A. |
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| 1999 (Spring) |
Visiting Professor, Laboratorie Aime Cotton and Laboratorie Kastler Brossel - ENS, Centre National de la Recherche Scientifique, Orsay/Paris, France |
| 1997 (Spring) |
Visiting Professor, Laboratorie Photophysique Moleculaire, University of Paris South, Orsay, France |
| 1995-1997 |
Visiting Scientist, National Institute of Standards and Technology, Gaithersburg, MD |
| 1995 (Spring) |
Visiting Scientist, Institute for Theoretical Atomic and Molecular Physics, Harvard-Smithsonian Center for Astrophysics, Cambridge, MA |
| 1994 |
Visiting Scientist, National Institute of Standards and Technology, Gaithersburg, MD |
| 1993 (Spring) |
Visiting Professor, Ben Gurion University, Beer-Sheva, Israel |
| 1986 (September) |
Kipping Visiting Fellowship, University of Nottingham, Nottingham, England |
| 1981-1982 |
Nansen Fund / Norway American Association Fellowship, University of Oslo, Oslo, Norway |
| 1981 (Summer) |
Nansen Fund, John Dana Archbold Fellowship, University of Oslo, Oslo, Norway |
| 1977-1981 |
Robert A. Welch Foundation Scholarship in Chemistry |
| 1977-1981 |
Houston Endowment Inc., Jesse Jones Scholarship |
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| 1993 (Spring) |
Visiting Professor, Numerical Methods for Solving the Schrödinger Equation, Ben Gurion University, Beer-Sheva, Israel |
| 1991 (Fall) |
Assistant Professor, Mathematical Methods for Chemical Physics, University of Notre Dame |
| 1984 (Fall) |
Teaching Assistant, Graduate Quantum Mechanics, University of Chicago |
| 1982-1983 |
Teaching Assistant, General Chemistry, University of Chicago |
| 1980-1981 |
Teaching Assistant, General Chemistry, Rice University |
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| 1998-present |
Physicist, Atomic Physics Division, National Institute of Standards and Technology
Division Chief, 2004- |
| 1997-1998 |
Research Staff Member, System Evaluation Division, Institute for Defense Analyses |
| 1992-1997 |
Research Scientist, James Franck Institute, University of Chicago |
| 1991 (Fall) |
Assistant Professor, University of Notre Dame |
| 1990-1991 |
Research Associate with Professor David J. Tannor, University of Notre Dame |
| 1987-1989 |
Research Associate with Professor Mark A. Ratner, Northwestern University |
| 1987 (Summer) |
Visiting Scientist with Professor Karl F. Freed, University of Chicago |
| 1983-1987 |
Research Assistant with Professor Karl F. Freed, University of Chicago |