环境气体对激光诱导Ni等离子体光谱特性影响研究

Study on the Influence of Environmental Gas on the Spectral Characteristics of Laser Induced Ni Plasma

本工作中利用高脉冲Nd:YAG脉冲激光器(波长532 nm,脉宽:4 ns)产生Ni等离子体,研究了Ar、He、N2气体对激光诱导Ni等离子体光谱的影响。通过实验研究发现氩气对Ni等离子体有明显增益效果。计算三种环境气体中产生Ni等离子体电子温度随气压变化关系,发现气压对Ni等离子体具有束缚作用。

In this work, high pulse Nd:YAG pulse laser (wavelength: 532 nm, pulse width: 4 ns) produces Ni plasma, and the influence of Ar, He and N2 gas on laser induced Ni plasma spectrum is studied. It is found that argon gas has obvious gain effect on Ni plasma. The electron temperature of Ni plasma in three environmental gases is calculated with the change of air pressure, and the pressure is bound to the Ni plasma.