Speaker:Wang Bingbing Institute of Physics, Chinese Academy of Sciences Huairou Division HX-L07 Group, Optical Physics Laboratory
Introduction:
Wang Bingbing: Female, she graduated from the Department of Physics of Jilin Universitywith a bachelor's degree, and later obtained a doctorate of science from the Institute of Atomic and Molecular Physics of Jilin University. After graduation, she worked as a postdoctoral fellow at the Institute of Physics, Chinese Academy of Sciences, and stayed to work after leaving the station. During this period, she worked as a postdoctoral fellow at the University of Toronto, Canada. Since 2010, she has been a researcher and doctoral supervisor of the Institute of Physics, Chinese Academy of Sciences.
Abstract:
In this report, I will mainly introduce the following research contents: 1. A brief introduction to the frequency domain theory of strong laser fields; 2. Using frequency domain theory to investigate atomic and molecular ionization processes in two-color laser fields; 3. Development of frequency domain theory. Theoretical study of the nonlinear Compton scattering process of bound electrons, and successful explain the red-shift phenomenon of scattered photons observed in experiments; 4. The double ionization process of He atoms in ultrashort pulses. We found that for the ground state of He atom, there is a characteristic time for the double ionization process: when the laser pulse width is smaller than this characteristic time, the two electrons have the same kinetic energy after ionization; when the laser pulse width is greater than this time, the two ionized electrons have different kinetic energy. We further found that there is a dynamic characteristic relationship between this characteristic time and the expected value of the Coulomb interaction energy of two electrons in the atom, that is, their product is a certain constant. Using different atomic systems, we further demonstrate the generality of this formula.
Report time:January 12, 2022 (Wednesday) 14:30
Report Location：Room 504, Life Science Building
Hosted by:Institute of Atomic and Molecular Physics
