Physics
DAI Dongxu
Title: Professor
Subject: Chemical Physics
Phone: 0411-84379360
Email: dxdai@dicp.ac.cn
Website:
Research Interests
Biography
Education and Employment:
B.A., 1985, Department of Physics, Peking University;
M.S., 1988, Department of Physics, Peking University;
Ph.D., 1999, Dalian Institute of Chemical Physics, Chinese Academy of Sciences.
August 1988 - now, Dalian Institute of Chemical Physics, Chinese Academy of Sciences.
October 1993 - September 1994, Department of Chemistry, Hong Kong University.
April 2000 - June 2002, Institute of Atomic and Molecular Sciences, Academic Sinica, Taiwan.
Research Field and Experiences:
Molecular Reaction Dynamics is a subject between chemistry and physics. It relies on sophisticated experimental and theoretical techniques to seek the essence of chemical reaction on molecular level, using the language of Quantum Mechanics. It answers questions about chemical reaction, such as: What are the products in a given reaction or photochemical process? What is the distribution of the quantum states of the product molecules? In which quantum state a molecule is most reactive? How does the collision energy affect the reactivity? Where does the energy go in a reaction? Answers of these questions are very significant to deeply understand the variant chemical processes in the nature, such as atmosphere chemistry, combustion process, life phenomenon and interstellar chemistry.
During my scientific research career, I have built a reflection time-of-flight mass spectrometer, an ion velocity- mapping machine and a cavity ring-down spectroscopic system, each of them is the first one in China. Since 2000, I have been studying the dynamics of isotropic variant of H + H2 -> H2 + H reaction on a crossed molecular beam apparatus that employs the Rydberg-atom time-of-fight detection scheme. The research results have been published in Nature and Science respectively.
Honors and Awards
Publications
1. Dongxu Dai, Chia C. Wang, Steven A. Harich, Xiuyan Wang, Xueming Yang, Sheng Der Chao, Rex T. Skodje, Interference of Quantized Transition State Pathways in the H+D2 →D+HD Chemical Reaciton. Science, 300, 1730-1734 (2003)
2. Steven A. Harich, Dongxu Dai, Chia C. Wang, Xueming Yang, Sheng Der Chao, Rex T. Skodje, Forward scattering due to slowdown of the intermediate in the H+HD→D+H2 reaction. Nature, 419, 281-284 (2002)
2. Steven A. Harich, Dongxu Dai, Chia C. Wang, Xueming Yang, Sheng Der Chao, Rex T. Skodje, Forward scattering due to slowdown of the intermediate in the H+HD→D+H2 reaction. Nature, 419, 281-284 (2002)