China has made important progress in the study of atomic molecular structure and electron super-fast dynamics using fly-second laser detection.

Xinhua News Agency, Wuhan, December 25 (Reporter Li Wei) Fly-second strong laser provides an important means to detect the microstructure of matter and electron ultra-fast dynamics at the atomic space-time scale (a second time and the Asia-Egypt space scale).
recently, Chinese experts have made important progress in the study of atomic molecular structure and electron super-fast dynamics using fly-second laser.
the ionized electron wave package induced by a fast-second laser or can return to the parent ion real ity and rescatter with it, the high-secondary harmonic spectrum or photoelectron spectrum caused by rescatter provides an effective way to detect the structure of atomic molecules and the super-fast evolution of the electron state.
at present, the development of high-resolution atomic molecular structure and dynamic detection methods in space-time is widely concerned in the field of research.
, Liu Xiaojun, a researcher at Wuhan Institute of Physics and Mathematics of the Chinese Academy of Sciences, Quanwei researcher, and Chen Jing, an associate researcher of Beijing Institute of Applied Physics and Computational Mathematics, and Wu Yong, in cooperation with the Beijing Institute of Applied Physics and Computing Mathematics, proposed a new laser-induced non-elastic electron diffraction scheme, and used this scheme to test the non-scatterary differential cross-section caused by the collision between electrons and inert gas ions.
, in this scheme, experts use the fly-second laser to drive the atomic rescatter electron wave package instead of the traditional electron beam, through the electronic collision method of the inert gas parent ion structure to detect.
combined with the high-resolution electron-ion momentum spectrometer device built in the early stage sitcom of Wuhan, they measured the photoelectron two-dimensional momentum spectrum corresponding to the electron-ion collision ionization process, and extracted the non-elastic scattering differential cross-section of electron and parent ion action, and the experimental results were consistent with the calculation of the approximate theory of the twisted wavebo.
this scheme inherits the advantages of ultra-high spatial resolution of traditional electron diffraction methods, and has ultra-high time resolution, which provides an important means for studying the laser-induced super-fast dynamics process in the flight seconds and even the time scale of a second.
research was recently published in the academic journal Physical Review Letters.
Source: Xinhua News Agency.