scholarly journals Emission spectroscopy of an atmospheric pressure plasma jet operated with air at low frequency

2015 ◽  
Vol 591 ◽  
pp. 012048
Author(s):  
L Giuliani ◽  
J L Gallego ◽  
F Minotti ◽  
H Kelly ◽  
D Grondona
Keyword(s):  
Atmospheric Pressure ◽  
Emission Spectroscopy ◽  
Low Frequency ◽  
Atmospheric Pressure Plasma ◽  
Plasma Jet ◽  
Atmospheric Pressure Plasma Jet ◽  
Pressure Plasma

scholarly journals Time resolved optical emission spectroscopy in power modulated atmospheric pressure plasma jet

2014 ◽  
Vol 13 (1) ◽  
Author(s):  
Jaroslav Hnilica ◽  
Lucia Potočňáková ◽  
Vít Kudrle
Keyword(s):  
Atmospheric Pressure ◽  
Emission Spectroscopy ◽  
Optical Emission Spectroscopy ◽  
Strong Dependence ◽  
Atmospheric Pressure Plasma ◽  
Optical Emission ◽  
Plasma Jet ◽  
Atmospheric Pressure Plasma Jet ◽  
Time Resolved ◽  
Pressure Plasma

AbstractIn this paper, the effects of the power modulation on atmospheric pressure plasma jet, operated in Ar+2%N2 mixture, are studied. Time resolved optical emission spectroscopy is used for the investigation. From line and band intensities, the excitation, vibration and rotation temperatures are calculated. Their evolution during the modulation period exhibits a strong dependence on modulation frequency. For higher modulation frequencies, there is significant discrepancy in rotational temperatures calculated from OH spectra and from N2+ spectra, which indicates that thermalisation time can reach milliseconds.

Phase-Resolved Spectroscopy Synchronized to Low-Frequency Self-Organized Mode of an Atmospheric Pressure Plasma Jet

2014 ◽  
Vol 42 (10) ◽  
pp. 2462-2463 ◽  
Author(s):  
Sebastian Peters ◽  
Mathias Andrasch ◽  
Jan Schafer ◽  
Rudiger Foest ◽  
Stephan Reuter ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Low Frequency ◽  
Atmospheric Pressure Plasma ◽  
Plasma Jet ◽  
Atmospheric Pressure Plasma Jet ◽  
Pressure Plasma ◽  
Self Organized

On-line diagnosis of O and OH radical in atmospheric pressure plasma jet by optical emission spectroscopy

2010 ◽  
Vol 22 (10) ◽  
pp. 2461-2464 ◽  
Author(s):  
刘忠伟 Liu Zhongwei ◽  
陈强 Chen Qiang ◽  
王正铎 Wang Zhengduo ◽  
杨丽珍 Yang Lizhen ◽  
李斌 Li Bin ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Emission Spectroscopy ◽  
Optical Emission Spectroscopy ◽  
Atmospheric Pressure Plasma ◽  
Optical Emission ◽  
Plasma Jet ◽  
Atmospheric Pressure Plasma Jet ◽  
Oh Radical ◽  
Pressure Plasma ◽  
On Line

scholarly journals High-Accuracy Surface Topography Manufacturing for Continuous Phase Plates Using an Atmospheric Pressure Plasma Jet

Micromachines ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 683
Author(s):  
Huiliang Jin ◽  
Caixue Tang ◽  
Haibo Li ◽  
Yuanhang Zhang ◽  
Yaguo Li
Keyword(s):  
Surface Topography ◽  
Atmospheric Pressure ◽  
High Efficiency ◽  
Atmospheric Pressure Plasma ◽  
Plasma Jet ◽  
Continuous Phase ◽  
High Accuracy ◽  
Phase Plate ◽  
Atmospheric Pressure Plasma Jet ◽  
Pressure Plasma

The continuous phase plate (CPP) is the vital diffractive optical element involved in laser beam shaping and smoothing in high-power laser systems. The high gradients, small spatial periods, and complex features make it difficult to achieve high accuracy when manufacturing such systems. A high-accuracy and high-efficiency surface topography manufacturing method for CPP is presented in this paper. The atmospheric pressure plasma jet (APPJ) system is presented and the removal characteristics are studied to obtain the optimal processing parameters. An optimized iterative algorithm based on the dwell point matrix and a fast Fourier transform (FFT) is proposed to improve the accuracy and efficiency in the dwell time calculation process. A 120 mm × 120 mm CPP surface topography with a 1326.2 nm peak-to-valley (PV) value is fabricated with four iteration steps after approximately 1.6 h of plasma processing. The residual figure error between the prescribed surface topography and plasma-processed surface topography is 28.08 nm root mean square (RMS). The far-field distribution characteristic of the plasma-fabricated surface is analyzed, for which the energy radius deviation is 11 μm at 90% encircled energy. The experimental results demonstrates the potential of the APPJ approach for the manufacturing of complex surface topographies.

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