中国物理B ›› 2016, Vol. 25 ›› Issue (3): 33202-033202.doi: 10.1088/1674-1056/25/3/033202

• ATOMIC AND MOLECULAR PHYSICS • 上一篇    下一篇

Influence of the interaction volume on the kinetic energy resolution of a velocity map imaging spectrometer

Peng Zhang(张鹏), Zheng-Peng Feng(冯正鹏), Si-Qiang Luo(罗四强), Zhe Wang(王哲)   

  1. 1. Huazhong University of Science and Technology, Wuhan 430074, China;
    2. Wuhan Institute of Technology, Wuhan 430073, China
  • 收稿日期:2015-09-21 修回日期:2015-11-11 出版日期:2016-03-05 发布日期:2016-03-05
  • 通讯作者: Zhe Wang E-mail:972153190@qq.com
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11234004 and 61275126).

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. 1. Huazhong University of Science and Technology, Wuhan 430074, China;
    2. Wuhan Institute of Technology, Wuhan 430073, China
  • Received:2015-09-21 Revised:2015-11-11 Online:2016-03-05 Published:2016-03-05
  • Contact: Zhe Wang E-mail:972153190@qq.com
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11234004 and 61275126).

摘要:

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.

关键词: velocity map imaging, interaction size, resolution

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.

Key words: velocity map imaging, interaction size, resolution

中图分类号:  (Photoionization and excitation)

  • 32.80.-t
32.80.Fb (Photoionization of atoms and ions) 33.60.+q (Photoelectron spectra ) 07.81.+a (Electron and ion spectrometers)