Measurement of Stark widths of Ni II spectral lines by laser induced breakdown spectroscopy

被引:13
作者
Aguilera, J. A. [1 ]
Aragon, C. [1 ]
Manrique, J. [2 ]
机构
[1] Univ Publ Navarra, Dept Fis, E-31006 Pamplona, Spain
[2] Univ CEU San Pablo, Fac Farm, E-28668 Madrid, Spain
关键词
Stark broadening; Stark width; Laser induced breakdown spectroscopy; Ni II; SHIFTS; PLASMA;
D O I
10.1016/j.jqsrt.2012.08.016
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The Stark widths of 53 Ni II spectral lines have been measured by laser induced breakdown spectroscopy. The laser induced plasmas have been generated from Ni-Cu and Ni-Al alloys with a wide range of nickel concentrations. The electron density at the different instants of the plasma lifetime has been determined from the Stark broadening of the H-alpha line and is in the range (1.6-6.8) x 10(17) cm(-3). The plasma temperature, measured by the Boltzmann plot method, is in the range 13100-18000 K. Within the ranges of electron density and temperature in the experiment and the statistical errors, the Stark widths are found to be proportional to the electron density. A procedure, based on the curve-of-growth methodology and the use of samples with different nickel concentrations, has been applied to reduce self-absorption. The Stark widths obtained are compared to experimental and theoretical data available in the literature. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码:151 / 156
页数:6
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