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Momentum Transfer Dependence of Two Types of the Broad Enhancement Phenomena: CO Spectra in the Valence Energy Region |
| ZHONG Zhi-Ping1;HAN Xiao-Ying2;ZHANG Wei-Hua2;LI Jia-Ming2,3,4 |
| 1Department of Physics, the Graduate School of the Chinese Academy of Sciences, PO Box 3908, Beijing 1000391
2Department of Physics, Center of Atomic and Molecular Nanosciences, Tsinghua University, Beijing 1000841
3Department of Physics, Shanghai Jiao Tong University, Shanghai 2000301
4Institute of Physics, Chinese Academy of Sciences, Beijing 100080
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| Cite this article: |
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ZHONG Zhi-Ping, HAN Xiao-Ying, ZHANG Wei-Hua et al 2004 Chin. Phys. Lett. 21 279-282 |
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Abstract Partial generalized oscillator strength densities of CO molecules related to the excitation of a 5σ or 1π electron are calculated by using multi-scattering self-consistent-field methods. Momentum transfer dependence of two types of the broad enhancement phenomena above the threshold with one-electron character, i.e. shape resonance and non-resonance enhancement, is studied. Our calculations show that the energy position of a non-resonance enhancement is related to the momentum transfer K. Therefore, electron impact based experiments can be used to identify the two types of the broad enhancement phenomena.
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| Keywords:
31.10.+z
33.80.Eh
33.70.Ca
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Published: 01 February 2004
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| PACS: |
31.10.+z
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(Theory of electronic structure, electronic transitions, and chemical binding)
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33.80.Eh
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(Autoionization, photoionization, and photodetachment)
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33.70.Ca
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(Oscillator and band strengths, lifetimes, transition moments, and Franck-Condon factors)
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