We observed green optical emission from an atmospheric‐pressure N₂/O₂ plasma jet. The green optical emission was composed of a line emission at λ = 557.71 ± 0.03 nm and a broadband component at 530 ≤ λ ≤ 560 nm. The line emission was assigned to the ¹D−¹S forbidden transition of atomic oxygen, whereas the broadband emission was due to the formation of O(¹S)N₂ excimer. We measured the absolute densities of O(¹S) and O(¹S)N₂ using a spectrograph with the absolute sensitivity calibration, and we discussed the kinetics in the green plasma jet on the basis of the absolute O(¹S) and O(¹S)N₂ densities. According to the rate coefficients and the transition probabilities reported in literature, the present experimental results are explained if the densities of and O(³P) are 9 × 10¹³ and 3 × 10¹³cm⁻³, respectively.

中文翻译：

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常压N2 / O2等离子射流中原子氧的1D-1S禁止光发射的观察

我们观察到来自大气压N ₂ / O ₂等离子体射流的绿色光发射。绿色的光发射是由在一行发射λ  = 557.71±0.03纳米，并在一个宽带部件530≤  λ  ≤560纳米。线发射被分配到¹ d - ¹ š禁止原子氧的过渡，而宽带发射是由于形成O（^1个小号）N ₂受激准分子。我们测量了O（¹ S）和O（¹ SN ₂使用具有绝对灵敏度校准的光谱仪，并且我们基于绝对O（¹ S）和O（¹ S）N ₂密度讨论了绿色等离子体射流中的动力学。根据文献报道的速率系数和跃迁概率，如果和O（³ P）的密度分别为9×10 ¹³和3×10 ¹³ cm ^-3，则可以解释本实验结果。