Experimental study of atmospheric-pressure micro-plasmas for the ambient sampling of conductive materials
Experimental study of atmospheric-pressure micro-plasmas for the ambient sampling of conductive materials
复制标题
常压微等离子体导电材料环境采样实验研究
DOI：
10.1088/1361-6463/aaa31a
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发表时间：
2018-01
期刊：
影响因子：
--
通讯作者：
Jiting Ouyang
中科院分区：
文献类型：
--
作者：
Zhengchao Duan;Feng He;Xinlu Si;James W Bradley;Jiting Ouyang
实验研究了大气压下微等离子体对导电固体材料的采样。利用高压脉冲发生器驱动钨针和金属样品之间的放电。研究了脉冲宽度对放电、微等离子体和取样的影响。电学实验结果表明，在一个电压脉冲中可以形成两个放电电流脉冲。第一电流脉冲的持续时间为100 ns的量级。第二电流脉冲的持续时间取决于电压脉冲的宽度。电性能测试结果还表明，在两种电流脉冲下均产生了电弧微等离子体。不同样品的发射光谱结果表明，金属离子的相对发射强度随脉冲宽度的增加而增加。电弧微等离子体的激发温度和电子密度随电压脉宽的增加而增加，这有助于提高金属离子的相对发射强度。金属表面取样点的光学图像和能量色散谱结果表明，短电压脉冲放电可以产生小的溅射坑。
Conductive solid material sampling by micro-plasma under ambient atmosphere was studied experimentally. A high-voltage pulse generator was utilized to drive discharge between a tungsten needle and metal samples. The effects of pulse width on discharge, micro-plasma and sampling were investigated. The electrical results show that two discharge current pulses can be formed in one voltage pulse. The duration of the first current pulse is of the order of 100 ns. The duration of the second current pulse depends on the width of the voltage pulse. The electrical results also show that arc micro-plasma was generated during both current pulses. The results of the emission spectra of different sampled materials indicate that the relative emission intensity of elemental metal ions will increase with pulse width. The excitation temperature and electron density of the arc micro-plasmas increase with the voltage pulse width, which contributes to the increase of relative emission intensity of metal ions. The optical images and energy dispersive spectroscopy results of the sampling spots on metal surfaces indicate that discharge with a short voltage pulse can generate a small sputtering crater.
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影响因子：
3.8
作者：
D. Pai;G. Stancu;D. Lacoste;C. Laux
通讯作者：
D. Pai;G. Stancu;D. Lacoste;C. Laux
影响因子：
3.1
作者：
C. S. Chen;Xinling Zhou;B. Man;Yongheng Zhang;J. Guo
通讯作者：
C. S. Chen;Xinling Zhou;B. Man;Yongheng Zhang;J. Guo
影响因子：
3.4
作者：
J. Wienold;H. Traub;Britta Lange;Thorsten Giray;S. Recknagel;H. Kipphardt;R. Matschat;U. Panne
通讯作者：
J. Wienold;H. Traub;Britta Lange;Thorsten Giray;S. Recknagel;H. Kipphardt;R. Matschat;U. Panne
DOI：
10.1088/0022-3727/46/46/464010
发表时间：
2013-11
期刊：
Journal of Physics D: Applied Physics
影响因子：
--
作者：
D. Rusterholtz;D. Lacoste;G. Stancu;D. Pai;C. Laux
通讯作者：
D. Rusterholtz;D. Lacoste;G. Stancu;D. Pai;C. Laux
影响因子：
3.4
作者：
R. Maibusch;H. Kuss;A. G. Coedo;T. Dorado;I. Padilla
通讯作者：
R. Maibusch;H. Kuss;A. G. Coedo;T. Dorado;I. Padilla