Measurement of Integrated Stokes Parameters for He 3 3 P State Excited by Spin-Polarized Electrons
DING Hai-Bing, PANG Wen-Ning, LIU Yi-Bao, SHANG Ren-Cheng
Department of Physics, Tsinghua University, Beijing 100084
Measurement of Integrated Stokes Parameters for He 3 3 P State Excited by Spin-Polarized Electrons
DING Hai-Bing;PANG Wen-Ning;LIU Yi-Bao;SHANG Ren-Cheng
Department of Physics, Tsinghua University, Beijing 100084
关键词 :
34.80.Nz ,
34.80.Dp ,
32.30.Jc
Abstract : Integrated Stokes parameters Pi (i=1,2, 3) for the He 3 3 P → 2 3 S1 (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 3 P state. The measured circular polarization P3 are non-zero, indicating strong electron-electron exchange effects in the spin-polarized electron-atom collision process.
Key words :
34.80.Nz
34.80.Dp
32.30.Jc
出版日期: 2005-09-01
:
34.80.Nz
(Spin dependence of cross sections; polarized beam experiments)
34.80.Dp
(Atomic excitation and ionization)
32.30.Jc
(Visible and ultraviolet spectra)
引用本文:
DING Hai-Bing;PANG Wen-Ning;LIU Yi-Bao;SHANG Ren-Cheng. Measurement of Integrated Stokes Parameters for He 3 3 P State Excited by Spin-Polarized Electrons[J]. 中国物理快报, 2005, 22(9): 2252-2254.
DING Hai-Bing, PANG Wen-Ning, LIU Yi-Bao, SHANG Ren-Cheng. Measurement of Integrated Stokes Parameters for He 3 3 P State Excited by Spin-Polarized Electrons. Chin. Phys. Lett., 2005, 22(9): 2252-2254.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2005/V22/I9/2252
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