| ATOMIC AND MOLECULAR PHYSICS |
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Differential and Integral Cross Sections for Electron Impact Excitation of Lithium |
| YANG Ning-Xuan1**, JIANG Jun2, DONG Chen-Zhong2,3 |
1Department of Physics and Electron, Hexi University, Zhangye 734000
2College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070
3Joint Laboratory of Atomic and Molecular Physics, NWNU&IMP CAS, Lanzhou 730070
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| Cite this article: |
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YANG Ning-Xuan, JIANG Jun, DONG Chen-Zhong 2010 Chin. Phys. Lett. 27 113401 |
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Abstract The differential and integral cross sections for electron impact excitation of lithium from the ground state 1s22s to excited states 1s22p, 1s23l (l=s, p, d) and 1s24l (l=s, p, d, f)at incident energies ranging from 5 eV to 25 eV are calculated by using a full relativistic distorted wave method. The target state wavefunctions are calculated by using the Grasp92 code. The continuum orbitals are computed in the distorted-wave approximation, in which the direct and exchange potentials among all the electrons are included. A part of the cross sections are compared with the available experimental data and with the previous theoretical values. It is found that, for the integral cross sections, the present calculations are in good agreement with the time-independent distorted wave method calculation, for differential cross sections, our results agree with the experimental data very well.
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| Keywords:
34.80.Kw
34.80.Dp
31.25.Jf
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Received: 12 May 2010
Published: 22 October 2010
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