| Original Articles |
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Photoionization of 1s Electron and Corresponding Shake-Up Process in Ground and Excited Lithium Atoms |
| SANG Cui-Cui, DING Xiao-Bin, DONG Chen-Zhong |
| 1College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 7300702Joint Laboratory of Atomic and Molecular Physics, NWNU & IMP, CAS, Lanzhou 730070 |
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| Cite this article: |
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SANG Cui-Cui, DING Xiao-Bin, DONG Chen-Zhong 2008 Chin. Phys. Lett. 25 3624-3626 |
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Abstract The cross sections of the 1s electron photoionization and corresponding shake-up processes for Li atoms in the ground state 1s22s and excited states 1s22p, 1s23s, 1s23p and 1s23d are calculated usin the multi-configuration Dirac--Fock method. The latest experimental photoelectron spectrum at h\ν=100eV [Cubaynes D et al. Phys. Rev. Lett. 99(2007)213004] has been reproduced by the present theoretical investigation excellently. The relative intensity of the shake-up satellites shows that the effects of correlation and relaxation become more important for the higher excited states of the lithium atom, which are explained very well by the spatial overlap of the initial and final state wavefunctions. In addition, strong dependence of the cross section on the atomic orbitals of the valence electrons are found, especially near the threshold.
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| Keywords:
31.15.Ac
31.70.Hq
32.70.Fw
32.80.Aa
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Received: 29 May 2008
Published: 26 September 2008
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| PACS: |
31.15.ac
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(High-precision calculations for few-electron (or few-body) atomic systems)
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31.70.Hq
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(Time-dependent phenomena: excitation and relaxation processes, and reaction rates)
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32.70.Fw
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(Absolute and relative intensities)
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32.80.Aa
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(Inner-shell excitation and ionization)
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