Emission spectroscopy of nitric oxide in laser-induced plasma

22nd International Conference on Spectral Line Shapes

Hornkohl, J.O.^1,2 ; Fleischmann, J.P.^2 ; Surmick, D.M.^1 ; Witte, M.J.^1 ; Swafford, L.D.^1 ; Woods, A.C.^1 ; Parigger, C.G.^1

University of Tennessee, Space Institute, 411 B.H. Goethert Parkway, Tullahoma

TN

37388, United States^1

Hornkohl Consulting, Tullahoma

TN

37388, United States^2

关键词: Laser induced breakdown;    Laser induced plasma;    Line strength;    Non equilibrium;    Theoretical calculations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/548/1/012040/pdf
DOI  :  10.1088/1742-6596/548/1/012040

来源: IOP

【 摘 要 】

In this paper, we investigate the laser-induced breakdown spectra of nitric oxide. Nitric oxide spectra are studied from laser-induced plasma emissions from plasma initiated both in laboratory air. Temperatures are inferred from the spectroscopic emissions using two methods. Spectra are fit to theoretical calculations of the diatomic spectra using the method of diatomic line strengths. For a time delay of 25 μs the temperature is found to be 6800 Kelvin. Comparisons are also provided to previously determined temperatures using a non-equilibrium air radiation fitting (NEQAIR) program.