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Influence of the interaction volume on the kinetic energy resolution of a velocity map imaging spectrometer |
| Peng Zhang(张鹏)1, Zheng-Peng Feng(冯正鹏)1, Si-Qiang Luo(罗四强)1, Zhe Wang(王哲)2 |
1. Huazhong University of Science and Technology, Wuhan 430074, China;
2. Wuhan Institute of Technology, Wuhan 430073, China |
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Abstract We investigate the influence of the interaction volume on the energy resolution of a velocity map imaging spectrometer. The simulation results show that the axial interaction size has a significant influence on the resolution. This influence is increased for a higher kinetic energy. We further show that the radial interaction size has a minor influence on the energy resolution for the electron or ion with medium energy, but it is crucial for the resolution of the electron or ion with low kinetic energy. By tracing the flight trajectories we show how the electron or ion energy resolution is influenced by the interaction size.
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Received: 21 September 2015
Revised: 11 November 2015
Accepted manuscript online:
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PACS:
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32.80.-t
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(Photoionization and excitation)
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32.80.Fb
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(Photoionization of atoms and ions)
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33.60.+q
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(Photoelectron spectra )
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07.81.+a
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(Electron and ion spectrometers)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11234004 and 61275126). |
Corresponding Authors:
Zhe Wang
E-mail: 972153190@qq.com
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Cite this article:
Peng Zhang(张鹏), Zheng-Peng Feng(冯正鹏), Si-Qiang Luo(罗四强), Zhe Wang(王哲) Influence of the interaction volume on the kinetic energy resolution of a velocity map imaging spectrometer 2016 Chin. Phys. B 25 033202
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