Electron impact ionization of large krypton clusters |
| |
Authors: | Li Shao-Hui Li Ru-Xin Ni Guo-Quan Xu Zhi-Zhan |
| |
Affiliation: | Laboratory for High Intensity Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China; 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. |
| |
Keywords: | atomic clusters ion gauge electron impact ionization |
本文献已被 维普 等数据库收录! |
| 点击此处可从《中国物理》浏览原始摘要信息 |
|
点击此处可从《中国物理》下载免费的PDF全文 |
|