Experimental study on helium optical electron
polarimetry
Ding Hai-Bing;Pang Wen-Ning;Liu Yi-Bao;Shang Ren-Cheng
【期刊名称】《中国物理：英文版》 【年(卷),期】2005(014)012
【摘要】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. 【总页数】4页(2440-2443) 【
关
键
词
】
optical
electron
polarimeter;spin-polarized
electrons;polarization
【作者】Ding Hai-Bing;Pang Wen-Ning;Liu Yi-Bao;Shang Ren-Cheng 【作者单位】Department of Physics, Tsinghua University, Beijing 100084, China;Department of Physics, Tsinghua University, Beijing 100084,
China;Department of Physics, Tsinghua University, Beijing 100084, China;Department of Physics, Tsinghua University, Beijing 100084, China 【正文语种】中文 【中图分类】O4 【相关文献】
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Experimental study on helium optical electron polarimetry
