Abstract Optical electron polarimetry is suitable for calibration of a spin-polarized electron source, especially for measurement of polarization of spin-polarized electron beam. In this paper, a new optical electron polarimeter is described, which is based on the circularly polarized He radiation induced by the bombarding of He atoms with spin-polarized electrons. The theoretical basis of the optical electron polarimetry and the structure of the optical electron polarimeter are discussed. The measurement of polarization of spin-polarized electrons produced from a new GaAs (100) spin-polarized electron source is carried out. The result of polarization of 30.8% for our spin-polarized electron source is obtained using the He optical electron polarimeter.
Received: 21 June 2005
Revised: 23 August 2005
Accepted manuscript online:
Fund: Project supported by the National Natural Science Foundation of China (Grant No 10134010).
Cite this article:
Ding Hai-Bing (丁海兵), Pang Wen-Ning (庞文宁), Liu Yi-Bao (刘义保), Shang Ren-Cheng (尚仁成) Experimental study on helium optical electron polarimetry 2005 Chinese Physics 14 2440
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