Investigation of ion-atom collision dynamics through imaging techniques |
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Authors: | XinWen Ma XiaoLong Zhu HuiPing Liu Bin Li ShaoFeng Zhang ShiPing Cao WenTian Feng and ShenYue Xu |
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Institution: | (1) Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China;(2) Graduate University of Chinese Academy of Sciences, Beijing, 100049, China |
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Abstract: | The principle and technique details of recoil ion momentum imaging are discussed and summarized. The recoil ion momentum spectroscopy
built at the Institute of Modern Physics (Lanzhou) is presented. The first results obtained at the setup are analyzed. For
30 keV He2+ on He collision, it is found that the capture of single electron occurs dominantly into the first excited states, and the
related scattering angle results show that the ground state capture occurs at large impact parameters, while the capture into
excited states occurs at small impact parameters. The results manifest the collision dynamics for the sub-femto-second process
can be studied through the techniques uniquely. Finally, the future possibilities of applications of the recoil ion momentum
spectroscopy in other fields are outlined.
Supported by the National Natural Science Foundation of China (Grant No. 10434100) |
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Keywords: | imaging of recoil ion momentum collision dynamics state-selective cross section angular differential cross section |
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