Jia-He Liu, Jia-Zhe Lu, Jun-Jie Lei, Xun Gao, Jing-Quan Lin. Effect of ambient gas pressure on characteristics of air plasma induced by nanosecond laser [J]. Acta Physica Sinica, 2020, 69(5): 057401-1
- Acta Physica Sinica
- Vol. 69, Issue 5, 057401-1 (2020)
Fig. 1. Experiment setup for the air pressure influence on the characteristics of air plasma induced by ns pulsed laser.
Fig. 2. The optical emission spectroscopy of the air plasma (air pressure of 100 kPa).
Fig. 3. The optical emission spectroscopy of the air plasma at different air pressure.
Fig. 4. The air plasma spectral intensity evolution with air pressure (O Ι 777.2 nm, N Ι 746.8 nm, and N II 500.5 nm).
Fig. 5. The air plasma density evolutions with air pressure (100 kPa O Ι 844.6 nm spectral line fitting).
Fig. 6. The air plasma temperature evolutions with air pressure.
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Table 1. Identification of the observed emission lines of N and O.
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Table 2. Oxygen atomic line spectral information.
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