| Original Articles |
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Observation of Atomic Emission Enhancement by fs-ns Dual-Pulse Laser-Induced Breakdown Spectroscopy |
| YAN Li-Xin1,2;ZHANG Yong-Sheng2;ZHANG Li-Rong2;LIU Jing-Ru1;CHENG Jian-Ping1;Lü Min1 |
| Department of Engineering Physics, Tsinghua University, Beijing 100084
Northwest Institute of Nuclear Technology, PO Box 69 (26), Xi’an 710024 |
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| Cite this article: |
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YAN Li-Xin, ZHANG Yong-Sheng, ZHANG Li-Rong et al 2006 Chin. Phys. Lett. 23 73-74 |
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Abstract An experiment of a 500-fs KrF laser pulse incident upon a high density supersonic O2 gas jet synchronously with an ns frequency-doubled Nd:YAG laser pulse is performed in orthogonal configuration. Significant atomic emission enhancement of over forty-fold is observed with an optical multi-channel analyser. The enhancement effect is probably attributed to the different ionization mechanisms between fs and ns laser pulses.
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| Keywords:
32.30.Jc
32.80.Fb
32.80.Rm
42.62.Fi
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Published: 01 January 2006
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| PACS: |
32.30.Jc
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(Visible and ultraviolet spectra)
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32.80.Fb
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(Photoionization of atoms and ions)
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32.80.Rm
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(Multiphoton ionization and excitation to highly excited states)
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42.62.Fi
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(Laser spectroscopy)
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