Cross Sections
Chemical reactions dynamics is challenging intriguing and at the forefront of chemical physics. I have been interested in accurately solving the time-dependent and time-independent quantal Schrödinger equation for reactive and nonreactive processes.One of the first things found in early one-dimensional reactive scattering calculations were quantum resonances (long-lived collision complexes) that can dramatically affect the reaction probabilities. With new methods developed by ourselves and others, it is now possible to do calculations for triatomic systems of real chemical interest. It is becoming clear that quantum resonances dominate many if not most systems in the full three-dimensional space. These quantum resonances are system-specific and very sensitive to any approximations made, so the only way to really understand them is via accurate quantum dynamics.
We enjoy strong interactive collaborations with the experimental groups of Professor Mark Keil and Professor Neil Shafer-Ray. We calculate center-of-mass and laboratory cross sections for direct comparison with their experimental observations. Since the interplay between experiment and theory is mutually beneficial it is a real opportunity to have two excellent experimental groups in our department with which to collaborate. We also have productive collaborations with theorists at Los Alamos National Laboratory, University of Houston and the University of Perugia, Italy and of course here at OU.
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Professor Gregory A. Parker
440 West Brooks
Department of Physics and Astronomy
University of Oklahoma
Norman, OK 73019 B.S. 1973
Brigham Young University
Ph.D. 1976 Brigham Young University
