Electron impact ionization of large krypton clusters
Li Shao-Hui (李邵辉)ab, Li Ru-Xin (李儒新)a, Ni Guo-Quan (倪国权)a, Xu Zhi-Zhan (徐至展)a
a Laboratory for High Intensity Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China; b Department of Physics, Shantou University, Shantou 515063, China
Abstract We show that the detection of ionization of very large van der Waals clusters in a pulsed jet or a beam can be realized by using a fast ion gauge. Rapid positive feedback electron impact ionization and fragmentation processes, which are initially ignited by electron impact ionization of the krypton clusters with the electron current of the ion gauge, result in the appearance of a progressional oscillation-like ion spectrum, or just of a single fast event under critical conditions. Each line in the spectrum represents a correlated explosion or avalanche ionization of the clusters. The phenomena have been analysed qualitatively along with a Rayleigh scattering experiment of the corresponding cluster jet.
Received: 09 January 2004
Revised: 24 May 2004
Accepted manuscript online:
(Raman and Rayleigh spectra (including optical scattering) ?)
Fund: Project supported by the National Key Basic Research Special Foundation of China (Grant No G1999075200), the National Natural Science Foundation of China (Grant No 29890210) and the Shanghai Foundation of Science and Technology (Grant No 0159nm022).
Cite this article:
Li Shao-Hui (李邵辉), Li Ru-Xin (李儒新), Ni Guo-Quan (倪国权), Xu Zhi-Zhan (徐至展) Electron impact ionization of large krypton clusters 2004 Chinese Physics 13 1684
High-intensity femtosecond laser absorption by rare-gas clusters Li Shao-Hui (李邵辉), Wang Cheng (王成), Liu Jian-Sheng (刘建胜), Wang Xiang-Xin (王向欣), Zhu Pin-Pin (朱频频), Li Ru-Xin (李儒新), Ni Guo-Quan (倪国权), Xu Zhi-Zhan (徐至展). Chin. Phys. B, 2003, 12(11): 1229-1234.
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