| Measurement of Integrated Stokes Parameters for He 3 ^3p State Excited by Spin-Polarized Electrons |
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| 作者姓名： | 丁海兵 庞文宁 刘义保 尚仁成 |
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| 作者单位： | Department of Physics, Tsinghua University, Beijing 100084 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant No 10134010. |
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| 摘 要： | Integrated Stokes parameters Pi （i = 1, 2, 3） for the He 3 ^3p → 2 ^3S1 （388.9nm） transition after excitation from the ground state to the 3 3 p state by a transversely spin-polarized electron beam are measured in near threshold energy region. The experimental results are presented. The linear-polarization P2 are consistent with zero over the incident energy range, providing evidence for the LS coupling mechanism of the 3 ^3p state. The measured circular polarization P3 are non-zero, indicating strong electron-electron exchange effects in the spin-polarized electron-atom collision process.
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| 关 键 词： | Stokes参数 旋转偏振电子 电子冲撞 电子检测 |
| 收稿时间： | 2005-06-27 |
| 修稿时间： | 2005-06-27 |
Measurement of Integrated Stokes Parameters for He 3 ^3p State Excited by Spin-Polarized Electrons |
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| Ding HaiBing;Pang WenNing;Liu YiBao;Shang RenCheng.Measurement of Integrated Stokes Parameters for He 3 ^3p State Excited by Spin-Polarized Electrons[J].Chinese Physics Letters,2005,22(9):2252-2254. |
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| Authors: | Ding HaiBing;Pang WenNing;Liu YiBao;Shang RenCheng |
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