Spectral Line

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Related to Stark broadening: Stark effect, pressure broadening

spectral line

[′spek·trəl ‚līn]
A discrete value of a quantity, such as frequency, wavelength, energy, or mass, whose spectrum is being investigated; one may observe a finite spread of values resulting from such factors as level width, Doppler broadening, and instrument imperfections. Also known as spectrum line.

Spectral Line


a thin line in an optical spectrum. Each such line can be characterized by a certain wavelength λ or frequency v = c/λ, where c is the speed of light. Spectral lines are observed in emission spectra as bright (colored) lines on a dark background and in absorption spectra as dark lines on a bright background. Each spectral line corresponds to a definite quantum transition in an atom, molecule, or crystal. Spectral lines are not strictly monochromatic: each one has a certain width Δλ.

References in periodicals archive ?
A strong and chaotic electric field produces Stark broadening, and a static electric field induces shifting.
5 Electronic density from the stark broadening method
One of the most widely used spectroscopic techniques for determining the electronic density results from the Stark broadening of measured spectral lines.
A promising application of laser-induced plasmas is their use as spectroscopic sources for the measurement of atomic parameters, such as transition probabilities, Stark broadening and shift parameters.
stated that Stark broadening may be one of the reasons since the broadening effect increases as the energy level increases [22].
Stark broadening of well-isolated lines in the plasma is, thus, useful for estimating the electron number densities provided that the Stark-broadening coefficients have been measured or calculated.
The width of stark broadening spectral line depends on the electron density [N.
3) and the corresponding values of stark broadening w from Table 2 in Eqn.
The electron density is determined by using the Stark broadening of [H.