spectral line

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Related to Stark broadening: Stark effect, pressure broadening

spectral line

n.
An isolated bright or dark line in a spectrum produced by emission or absorption of light of a single wavelength.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

spec′tral line′


n.
a line in a spectrum due to the absorption or emission of light at a discrete frequency.
[1865–70]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
In plasma source the line-width is mainly due to Stark broadening, which results from the collisions of charged species [5], whereas Pressure and Doppler broadenings are quite small.
where [omega] is the electron impact parameter (nm) that can be found in the standard tables [N.sub.r] is the reference electron density which equal to [10.sup.16] (c[m.sup.-3]) for neural atoms and [10.sup.17] (c[m.sup.-3]) for singly charged ions, [DELTA][[lambda].sub.1/2] is the FWHM of Stark broadening lines.
By using the method based on Stark broadening of the hydrogen [H.sub.[beta]] line, the concentrations of electrons [n.sub.e] in the plasma were determined [13-15, 17].
Taking into account the estimated values of [DELTA][[lambda].sub.I], [DELTA][[lambda].sub.D], and [DELTA][[lambda].sub.W] and obtained value FWHM of [H.sub.[beta]] line, the Stark broadening [DELTA][[lambda].sub.S] was calculated [15, 23].
In the laboratory, Stark broadening studies usually center upon extremely dense plasmas, with electron numbers approaching [10.sup.17] [cm.sup.-3] [224].
A minor objection to the use of Stark broadening to explain the width of the hydrogen lines in the gaseous models rests on the fact that the appropriate experiments on hydrogen plasma do not exist.
(Kumar et al 2003) It has also been possible to measure different plasma parameters such as electron density and electron temperature using the Boltzmann's local thermal equilibrium (LTE) approximation and Stark broadening of the hydrogen alpha line.
The electron temperature and density were determined using the emission intensity and stark broadening, respectively, of the spectral lines of six elements Fe, Mg, Be, Si, Mn, and Cu in the aluminum alloys.
The broadening of the ionic lines is due to the high electron densities occurring at this initial period (Stark broadening).