Comparison of plasma temperature and electron density on nanosecond laser ablation of Cu and nano-Cu
Comparison of plasma temperature and electron density on nanosecond laser ablation of Cu and nano-Cu
复制标题
DOI：
10.1063/1.4913987
复制
发表时间：
2015-03
影响因子：
2.2
通讯作者：
Anmin Chen;Yuanfei Jiang;Tingfeng Wang;Junfeng Shao;M. Jin
中科院分区：
文献类型：
--
作者：
Anmin Chen;Yuanfei Jiang;Tingfeng Wang;Junfeng Shao;M. Jin
激光诱导击穿光谱是通过光谱探测设备在不同的延迟时间和距离采集由铜和纳米铜组成的靶的光谱，在实验中用532 nm，10 ns，10 Hz的激光烧蚀铜和纳米铜组成的靶。测量波长范围为475~525 nm。利用局域热力学平衡模型，分析了靶面到透镜不同距离下的等离子体温度和电子数密度特性。结果表明，与纳米铜等离子体相比，铜等离子体的温度较高，而电子数密度较低。
Laser-induced breakdown spectroscopy is performed through the collection of spectra by spectral detection equipment at different delay times and distances from targets composed of Cu and nano-Cu, which are ablated using a Nd:YAG laser (532 nm, 10 ns, 10 Hz) in our experiments. The measured wavelength range is from 475 nm to 525 nm. Using the local thermodynamic equilibrium model, we analyze the characteristics of the plasma temperature and the electron number density for different distances between the target surface and the lens. The results show that when compared with the nano-Cu plasma case, the temperature of the Cu plasma is higher, while its electron number density is lower.