CHEUK-YIU NG is a professor in the Department of Chemistry at Iowa University of Science and Technology, Ames, Iowa. Dr. Ng has also been a Visiting Professor at the Universite Paris-Sud, France, and was named Honorary Professor of Chemistry at Zhengzhou University, China. He was editor of the monograph Vacuum Ultraviolet Photoionization and Photodissociation of Molecules and Clusters and has written over eighty technical papers. He is a member of both the American Physical Society and the American Chemical Society. Dr. Ng received his PhD in physical chemistry from the University of California at Berkeley.

MICHAEL BAER is a senior scientist in the Department of Physics and Applied Mathematics at the Soreq Nuclear Research Center, Yavne, Israel. Dr. Baer has been a Visiting Scientists at Oxford University and a Visiting Professor at the Institute of Molecular Science, Okazaki, Japan. Dr. Baer has written over a hundred technical papers as well as the 4-volume The Theory of Chemical Reaction Dynamics. Dr. Baer received his PhD in physics from the Hebrew University.