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Low-Energy Rate Enhancement in Recombination Processes of Electrons into Bare Uranium Ions |
| WU Yong1;ZENG Si-Liang1;DUAN Bin1;YAN Jun1;WANG Jian-Guo 1,2;DONG Chen-Zhong 3;MA Xin-Wen2 |
| Key Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, PO Box 8009-57, Beijing 100088
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000
Department of Physics, Northwest Normal University, Lanzhou 730000 |
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| Cite this article: |
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WU Yong, ZENG Si-Liang, DUAN Bin et al 2007 Chin. Phys. Lett. 24 404-407 |
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Abstract Based on the Dirac--Fork--Slater method combined with the multichannel quantum defect theory, the recombination processes of electrons into bare uranium ions (U 92+ ) are investigated in the relative energy range close to zero, and the x-ray spectrum emitted in the direct radiative recombination and cascades processes are simulated. Compared with the recent measurement, it is found that the rate enhancement comes from the additional populations on high Rydberg states. These additional populations may be produced by other recombination mechanisms, such as the external electric-magnetic effects and the many-body correlation effects, which still remains an open problem.
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| Keywords:
34.80.Lx
32.30.Rj
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Received: 30 November 2006
Published: 24 February 2007
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| PACS: |
34.80.Lx
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(Recombination, attachment, and positronium formation)
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32.30.Rj
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(X-ray spectra)
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