[1] SARKAR A, ALAMELU D, AGGARWAL S K. Gallium quantification in solution by LIBS in the presence of bulk uranium[J]. Optics and Laser Technology, 2012, 1(44): 30-34.
[2] ERMALITSKAIA F E, VOROPAY Y S, ZAJOGIN A P. Dualpulse laserinduced breakdown spectrometry of bronze alloys and coatings[J]. Journal of Applied Spectroscopy, 2012, 77(2): 153-159.
[3] GONDA M A, DASTAGEER A, MASLEHUDDIN M, et al. Detection of sulfur in the reinforced concrete structures using a dual pulsed LIBS system[J]. Optics and Laser Technology, 2012, 3(44): 566-571.
[4] BRYGO F, ABDELKRIM. LaserInduced breakdown spectroscopy and chemometrics: a novel potential method to analyze wheat grains[J].Journal of Agricultural and Food Chemistry, 2010, 58(12): 7126-7134.
[5] HAIDER A F, KHAN Z H. Determination of Ca content of coral skeleton by analyte additive method using the LIBS technique[J]. Optics & Laser Technology, 2012, 6(44): 1654-1659.
[6] LEME F O, GODOI Q, KIYATAKA P H. Effect of pulse repetition rate and number of pulses in the analysis of polypropylene and high density polyethylene by nanosecond infrared laser induced breakdown spectroscopy[J]. Applied Surface Science, 2012, 8(258): 3598-3603.
[7] PENG L L, SUN D X, SU M G, et al. Dong.Rapid analysis on the heavy metal content of spent zincmanganese batteries by laserinduced breakdown spectroscopy[J]. Optics & Laser Technology, 2012, 8(44):2469-2475.
[8] ELSAYED K, IMAM H, HARFOOSH A, et al. Design and construction of Qswitched Nd∶YAG laser system for LIBS measurements[J]. Optics and Laser Technology, 2012, 1(44): 130-135.
[9] KONDO H, AIMOTO M, YAMAMURA H, et al. Rapid defect characterization of steel by laser induced breakdown spectroscopy[J]. Metallurgical Analysis, 2009, 29(1): 13-16.
[10] INAKOLLU P T P, AWADHESH K R, YUEH F Y, et al. A comparative study of laser induced breakdown spectroscopy analysis for element concentrations in aluminum alloy using artificial neural networks and calibration methods[J]. Spectrochim Acta Part B, 2009, 64(1): 99-104.
[11] KILLINGER D K, ALLEN S D, ROBERT D, et al. Enhancement of Nd∶YAG LIBS emission of a remote target using a simultaneous CO2 laser pulse[J]. Optics Express, 2007, 15(20): 12905-12915.
[12] AHMED R, BAIG M A. On the optimization for enhanced dualpulse laserinduced breakdown spectroscopy[J]. IEEE Transactions on Plasma Science, 2010, 38(8): 2052-2055.
[13] GUO L B, HU W, ZHANG B, et al. Enhancement of optical emission from laserinduced plasmas by combined spatial and magnetic confinement[J]. Optics Express, 2011, 19(15): 14067-14075.
[14] HEDWIG R, LIE J J, TJIA M O, et al. Confinement effect in enhancing shock wave plasma generation at low pressure by TEA CO2 laser bombardment on quartz sample[J]. Spectrochimica Acta Part B: Atomic. Spectroscopy, 2003, 58(3): 531-542.
[15] ZHOU W, LI K, QIAN H, et al. Development of a nanosecond dischargeenhanced laser plasma spectroscopy[J]. Optics Letters, 2011, 36(15): 2961-2963.
[16] POPOV A M, COLAO F, FANTONI R. Enhancement of LIBS signal by spatially confining the laserinduced plasma[J]. Journal of Analytical Atomic Spectrometry, 2009, 24(5): 602-604.
[17] PANDHIJA S, RAI N K, RAI A K, et al. Contaminant concentration in environmental samples using LIBS and CFLIBS[J]. Applied Physics B, 2010, 98(1): 231–241.
[18] KONDO H. Comparison between the characteristics of the plasmas generated by laser on solid and molten steels[J]. Spectrochemical Acta Part B: Atomic Spectroscopy, 2012, 73(7): 20-25.
[19] National Institute of Standards and Technology Physics Laboratory (NIST) Atomic Spectra Database[OL]. http://physics.nist.gov/PhysRefData/ASD/lines_ from html.
[21] GRIEM H R. Plasma spectroscopy[M]. New York : McGrawHill, 1964.