Numerical Study of Change in Shape of Saturated Absorption Spectrum of Argon Arcjet Plasma by Strong Velocity-Changing Collisions
Numerical Study of Change in Shape of Saturated Absorption Spectrum of Argon Arcjet Plasma by Strong Velocity-Changing Collisions
复制标题
强变速碰撞引起的氩弧喷射等离子体饱和吸收光谱形状变化的数值研究
DOI：
10.1109/tps.2018.2864744
复制
发表时间：
2019
影响因子：
1.5
通讯作者：
Matsuoka Leo
中科院分区：
文献类型：
--
作者：
Nishiya Noritaka;Matsuoka Leo
对强变速碰撞作用下氩电弧加热等离子体的饱和吸收谱进行了数值研究。利用代表氩原子中两个电子态的速率方程系统，模拟了氩原子与泵浦光相互作用时速度分布的变化，数值再现了氩原子的光谱。将SA谱分为高斯函数、洛伦兹函数和倒谱的线性组合五种类型。通过改变两个电子态的碰撞诱导速度重分布率和它们之间的衰变率，我们绘制了SA谱类型的图。讨论了由实验确定碰撞参数的可能性。
Saturated absorption (SA) spectra of argon arcjet plasma with the effect of strong velocity-changing collisions were numerically investigated. The spectrum was numerically reproduced by simulating the change of the velocity distribution interacting with the pump laser using the rate equation system representing two electronic states in the argon atoms. The SA spectra were classified into five types, which are composed of the linear combination of the Gaussian function, Lorentzian function, and inverted pedestals. We drew the maps of the types of the SA spectrum by varying the collision-induced velocity redistribution rate in the two electronic states and the decay rate among them. The possibility of the determination of the collisional parameters from the experiments was also discussed.