Study on optical electron polarimeter and measurement of the relative Stokes parameters of weak light

• 来源期刊: 中国物理（英文版）
• 学科: 物理学
• 关键词: impact excitation polarization optical electron polarimeter relative Stokes parameters
• 年，卷（期）: 2002,（2）
• 页码范围: 126-131
• 页数: 6页
• 分类号: O4
• 语种: 英文

摘要

In this paper, we present the research on an optical electron polarimeter, which is used to determine the polarizationof an incident electron beam by measuring the relative Stokes paraneters of the fluorescence emitted from the He gasfollowing the impact excitation with the electron beam. The fundamental theory of the optical electron polarimeter isdiscussed with the 33p→23S transition of He. The structure and performance of the instrument are described, whichare different in some aspects from previous works.The arrangement of the experiment for measuring the relativeStokes parameters of linearly polarized weak light is also investigated, which actually involves the same processes as thepolarization measurement with the incident electron beam. The results obtained are in agreement with the theoreticalprediction.