| Original Articles |
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Surface Plasmon-Assisted Excitation of Atomic Visible Light Spectral Lines in the Impact of Highly Charged Ions 126Xeq+ on Solid Surfaces |
| ZHANG Xiao-An1,2;ZHAO Yong-Tao1,2;LI Fu-Li1;YANG Zhi-Hu2;XIAO Guo-Qing2;ZHAN Wen-Long2 |
| 1Department of Applied Physics, Xi’an Jiao Tong University, Xi’an 710049
2Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 |
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| Cite this article: |
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ZHANG Xiao-An, ZHAO Yong-Tao, LI Fu-Li et al 2003 Chin. Phys. Lett. 20 1372-1375 |
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Abstract We measured the visible light spectral lines of sputtering atoms from solid surfaces of Al, Ti, Ni, Ta and Au which are impacted by 150 keV 126Xeq+ (6 ≤ q ≤ 30). It is found that intensities of the light spectral lines are greatly and suddenly enhanced when the charge state of the ion is raised up to a critical value. If assuming that potential energy released from the incident ion due to capturing one electron is enough to excite a surface plasmon, we can estimate the critical charge states and obtain the results very well consistent with the measurements for the above mentioned target materials. This means that a surface plasmon induced by one electron capture can enhance the excitation of atomic visible light spectral lines in the impact of a highly charged ion on a solid surface.
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| Keywords:
79.20.Rf
33.20.Kf
34.50.Dy
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Published: 01 August 2003
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| PACS: |
79.20.Rf
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(Atomic, molecular, and ion beam impact and interactions with surfaces)
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33.20.Kf
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(Visible spectra)
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34.50.Dy
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