li jie, lu jidong, lin zhaoxiang, et al. Experimental investigation on plasma temperature of Ca by laser-induced breakdown spectroscopy[J]. High Power Laser and Particle Beams, 2009, 21.
Citation:
li jie, lu jidong, lin zhaoxiang, et al. Experimental investigation on plasma temperature of Ca by laser-induced breakdown spectroscopy[J]. High Power Laser and Particle Beams, 2009, 21.
li jie, lu jidong, lin zhaoxiang, et al. Experimental investigation on plasma temperature of Ca by laser-induced breakdown spectroscopy[J]. High Power Laser and Particle Beams, 2009, 21.
Citation:
li jie, lu jidong, lin zhaoxiang, et al. Experimental investigation on plasma temperature of Ca by laser-induced breakdown spectroscopy[J]. High Power Laser and Particle Beams, 2009, 21.
The plasma temperature is an important factor in quantitative analysis by laser-induced breakdown spectroscopy(LIBS). The plasmas were generated by a Nd:YAG laser on the surface of sample and detected by an Echelle spectrograph and an Intensified Charge-Coupled Device(ICCD). The spectrum of 300 nm to 450 nm recorded several spectral lines of Ca component such as Ca Ⅱ 315.9 nm, Ca Ⅱ 317.9 nm, Ca Ⅱ 393.4 nm, Ca Ⅱ 396.9 nm, Ca Ⅰ 422.7 nm and so on. It is known that the change of plasma temperature has influence on the line intensity from the equation for quantitative LIBS analysis. It was assumed that the plasmas produced in the experiment were in local thermodynamic equilibrium(LTE). The temperature variations were deduced by the four one-ionized Ca spectral lines and the Boltzmann plot
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