[1] [1] PORTNOV A, ROSENWAKS S, BAR I. Emission following laser-induced breakdown spectroscopy of organic compounds in ambient air［J］. Applied Optics, 2003, 42(15): 2835-2842.

[2] [2] LEACH S. CN spectroscopy and cosmic background radiation measurements［J］. Canadian Journal of Chemistry, 2004, 82(6): 730-739.

[3] [3] LEACH S. Why COBE and CN spectroscopy cosmic background radiation temperature measurements differ, and a remedy［J］. Monthly Notices of the Royal Astronomical Society, 2012, 421(2): 1325-1330.

[4] [4] KRISTYNA S, KSENIYA D, PATRIK S, et al. A study of the composition of the products of laser-induced breakdown of hexogen, octogen, pentrite and trinitrotoluene using selected ion flow tube mass spectrometry and UV-Vis spectrometry［J］. Analyst, 2010, 135(5): 1106-1114.

[5] [5] LIN X, YU X L, LI F, et al. Temperature measurements in simulated Mars atmospheres based on the CN radical emission spectrum［J］. Chinese Journal of Theoretical & Applied Mechanics, 2014, 46(2): 201-208(in Chinese).

[6] [6] SCHAEFER III H F, HEIL T G. Electronic structures and potential energy curves for the low-lying states of the CN radical［J］. The Journal of Chemical Physics, 1971, 54(6): 2573-2580.

[7] [7] DAS G, JANIS T, WAHL A C. Ground and excited states of the diatoms CN and AlO［J］. Journal of Chemical Physics, 1974, 61(4): 1274-1279.

[8] [8] RAM R S, DAVIS S P, WALLACE L, et al. Fourier transform emi-ssion spectroscopy of the B2Σ+ ~X2Σ+, system of CN［J］. Journal of Molecular Spectroscopy, 2006, 237(2): 225-231.

[9] [9] PRASAD C V V, BERNATH P F. Fourier transform jet-emission spectroscopy of the A2Πi~X2Σ+ transition of CN［J］. Journal of Molecular Spectroscopy, 1992, 156(2): 327-340.

[10] [10] HOBBS L M, THORBURN J A, OKA T, et al. Atomic and molecular emission lines from the red rectangle［J］. The Astrophysical Journal, 2004, 615(2): 947-957.

[11] [11] REHFUSS B D, SUH M H, MILLER T A, et al. Fourier transform UV, visible, and infrared spectra of supersonically cooled CN radical［J］. Journal of Molecular Spectroscopy, 1992, 151(2): 437-458.

[12] [12] KOTLAR A J, FIELD R W, STEINFELD J I, et al. Analysis of perturbations in the A2Π~X2Σ+, “Red” system of CN［J］. Journal of Molecular Spectroscopy, 1980, 80(1): 86-108.

[13] [13] GUO L B, HAO R F, HAO Zh Q, et al. Study on the emission spectrum of AlO radical B2Σ+~X2Σ+ transition using laser-induced breakdown spectroscopy［J］. Acta Physica Sinica, 2013, 62(22): 224211(in Chinese).

[14] [14] LIU Y F, ZHANG L Sh, HE W L, et al. Spectroscopic study on the laser-induced breakdown flame plasma［J］. Acta Physica Sinica, 2015, 64(4): 045202(in Chinese).

[15] [15] NAGESWARA R E, SREEDHAR S, TEWARI S P, et al. CN, C2 molecular emissions from pyrazole studied using femtosecond LIBS［C］//International Conference on Fibre Optics and Photonics. Washington DC, USA: Optical Society of America, 2012: TPo.3.

[16] [16] MOUSAVI S J, FARSANI M H, DARBANI S M R, et al. CN and C2, vibrational spectra analysis in molecular LIBS of organic mate-rials［J］. Applied Physics, 2016, B122(5): 1-16.

[17] [17] CHEN X L. Research on the method of component analysis by laser-induced breakdown spectroscopy［D］. Hefei: Hefei University of Technology, 2014: 7-8(in Chinese).

[18] [18] LIU Y H, CHEN M, LIU X D, et al. The mechanism of effect of lens-to-sample distance on laser-induced plasma［J］. Acta Physica Sinica, 2013, 62(2): 025203(in Chinese).

[19] [19] HAHN D W, OMENETTO N. Laser-induced breakdown spectroscopy (LIBS), part Ⅱ: review of instrumental and methodological approaches to material analysis and applications to different fields［J］. Applied Spectroscopy, 2012, 66(4): 347-419.

[20] [20] SHAO Y, GAO X, DU Ch, et al. The LIBS experiment condition optimization of alloy steel［J］. Spectroscopy and Spectral Analysis, 2013, 33(2): 531-534(in Chinese).

[21] [21] PENG Zh M, DING Y J, ZHAI X D, et al. Measurements of rotational and vibrational temperatures based on flame emission spectroscopy［J］. Acta Physica Sinica, 2011, 60(10): 104702(in Chin-ese).

[22] [22] LUQUE J, CROSLEY D R. Lifbase: database and spectral simulation program (version 1.5)［J/OL］. (1999-01)［2018-12-07］. https://www.researchgate.net/publication/283423321_LIFBASE_Database_and_Spectral_Simulation_Program_Version_15.