Enhancement characteristics of laser-induced plasma confined by hemispherical cavities in different materials
Enhancement characteristics of laser-induced plasma confined by hemispherical cavities in different materials
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不同材料半球腔约束激光诱导等离子体的增强特性
DOI：
10.1007/s00340-019-7349-y
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发表时间：
2019-11
期刊：
影响因子：
--
通讯作者：
Wang Qi
中科院分区：
文献类型：
--
作者：
Li Xiaolong;Wang Jingge;Li Hehe;Li Xinzhong;Tang Miaomiao;Zhang Liping;Wang Qi
半球形谐振腔可以提高等离子体的发射光谱，从而提高激光诱导击穿光谱的灵敏度。在这项工作中，激光诱导等离子体羽的图像得到了约束和不约束。结果证实了半球形空腔引起信号增强的原因是反射激波的“压缩”效应。研究了腔体材料特性对光谱信号增强的影响。采用K树脂、铝合金、光敏树脂和尼龙四种不同材料制成的腔体来约束等离子体。结果表明，腔体的材料物理性质影响增强效果。我们发现，主要影响因素是材料的表面粗糙度。由于反射激波的镜面反射分量更大，等离子体与激波之间的后续相互作用更强烈，光滑的腔表面诱导更强的增强效应。当表面粗糙度从0.2变化到16.1时，特征谱线的光谱强度大约增加了一倍。
A hemispherical cavity can be used to improve the sensitivity of laser-induced breakdown spectroscopy by increasing the emission spectra of the plasma. In this work, laser-induced plasma plume images were obtained with and without confinement. The results have confirmed that the reason for the signal enhancement caused by the hemispherical cavity was the reflected shockwave “compressing” effect. The dependence of spectral signal enhancement on the material property of the cavities was investigated. Four cavities in different materials, which include K-resin, aluminum alloy, photosensitive resin and nylon, were used to confine the plasma. It has shown that the material physical properties of the cavities influence the enhancement effect. We found that the main influencing factor was surface roughness of the material. Smoother cavity surfaces induced stronger enhancement effects due to the larger specular reflection component of the reflected shockwave and the more intense subsequent interaction between the plasma and shockwave. The spectral intensities of the characteristic lines approximately doubled with surface roughness values changing from 0.2 to 16.1.
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影响因子：
1.6
作者：
Liu Xiaolong;Wang Jingge;Zhang Liping;Liang Xinzhong
通讯作者：
Liu Xiaolong;Wang Jingge;Zhang Liping;Liang Xinzhong
影响因子：
8.8
作者：
Moncayo, S.;Manzoor, S.;Caceres, J. O.
通讯作者：
Caceres, J. O.
DOI：
10.1145/122718.122738
发表时间：
1991-07
期刊：
Proceedings of the 18th annual conference on Computer graphics and interactive techniques
影响因子：
--
作者：
Xiao D. He;K. Torrance;F. Sillion;D. Greenberg
通讯作者：
Xiao D. He;K. Torrance;F. Sillion;D. Greenberg
影响因子：
3.8
作者：
Zhe Wang;Z. Hou;S. Lui;Dong Jiang;Jianming Liu;Zheng Li
通讯作者：
Zhe Wang;Z. Hou;S. Lui;Dong Jiang;Jianming Liu;Zheng Li
使用介电常数和尺寸优化的等离子体约束环提高激光诱导击穿光谱的精度
影响因子：
3.8
作者：
AN LI;SHUAI GUO;NASRULLAH WAZIR;KE CHAI;LIANG LIANG;MIN ZHANG;YAN HAO;PENGFEI NAN;RUIBIN LIU
通讯作者：
RUIBIN LIU