Study of Heating Effects During Thomson Scattering in Laser Induced Plasma in Air
Study of Heating Effects During Thomson Scattering in Laser Induced Plasma in Air
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DOI：
10.1002/ctpp.201000060
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发表时间：
2011-03
影响因子：
1.6
通讯作者：
G. Travaillé;A. Mendys;K. Dzierżȩga;S. Pellerin;B. Pokrzywka;E. Thouin;B. Bousquet;L. Canioni
中科院分区：
文献类型：
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作者：
G. Travaillé;A. Mendys;K. Dzierżȩga;S. Pellerin;B. Pokrzywka;E. Thouin;B. Bousquet;L. Canioni
利用汤姆逊散射方法和等离子体成像技术研究了6 ns、532 nm、25 mJ的Nd：YAG激光脉冲在空气中产生的等离子体。汤姆逊散射光谱记录在击穿脉冲后150 ns至1 µs的延迟时间范围内。在等离子体羽流的中心，电子密度和温度分别从7.4×1017 cm-3和101000 K降低到1.0×1017 cm-3和22700 K。这些电子温度被发现，导致部分等离子体加热。在探针（Thomson）脉冲的开始和结束之间已经观察到该效应（© 2011 WILEY-VCH Verlag GmbH & Co. KGaA，魏因海姆）
The laser induced plasma in air produced by 6 ns, 532 nm Nd:YAG pulses with 25 mJ energy was studied using the Thomson scattering method and plasma imaging techniques. Thomson scattering spectra were registered at delay times ranging from 150 ns to 1 µs after the breakdown pulses. The electron density and temperature, as determined in the core of the plasma plume, were found to decrease from 7.4×1017 cm–3 to 1.0×1017 cm–3 and from 101 000 K to 22 700 K, respectively. These electron temperatures were found to result partially from plasma heating. This effect has been observed between the beginning and the end of the probe (Thomson) pulse (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)