[1] [1] Franz A Pertl, James E Smith. Journal of Automobile Engineering, 2009, 223(11): 1405.

[2] [2] Khodataev K V. Plasma Science, 2010 Abstracts IEEE International Conference on Topic(s): Engineered Materials, Dielectrics & Plasmas; Fields, Waves & Electromagnetics; Nuclear Engineering, 10.1109/PLASMA.2010.5534213.

[3] [3] Anthony DeFilippo, Samveg Saxena, Vi Rapp, et al. SAE Paper 2011-01-0663, 2011.

[4] [4] Xing Rao, Hammack S, Carter C, et al. IEEE Transactions on Plasma Science, 2011 39(12): 3307.

[5] [5] Laux C O, Spence T G, Kruger C H, et al. Plasma Sources Sci. Technol., 2003, 12: 125.

[6] [6] Kadek W Hemawan, Indrek S Wichman, Tonghun Lee, et al. Review of Scientific Instruments, 2009, 80: 053507.

[8] [8] Yuji Ikeda, Ahsa Moon, Masashi Kaneko. Applied Optics, 2010, 49(13): C95.

[10] [10] Huang Qingju. Acta Photonica Sinica, December, 2006, 35(12): 1818.

[11] [11] NIST Atomic Spectral Database Lines Data (ASD). http://physics.nist.gov/PhysRefData/ASD/lines_form.html.