期刊
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
卷 63, 期 9, 页码 962-967出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.sab.2008.06.001
关键词
Voigt function; Natural linewidths; Uranium M characteristic lines; EPMA
类别
The Voigt function is the convolution between a Gaussian and a Lorentzian distribution. The numerical implementation of this function is required in diverse areas of physics and applied mathematics. An explicit representation for the Voigt function is developed in terms of series of trigonometric and hyperbolic functions. The obtained expression permits a very fast evaluation of Voigt profiles with a degree of accuracy higher than the one required for spectroscopy applications. In addition. this expression is implemented in a numerical algorithm of parameter optimization in electron probe microanalysis, and applied to determine natural linewidths for several transitions to the uranium M levels. (C) 2008 Elsevier B.V. All rights reserved.
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