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spectral line
(redirected from Emission lines)

    Also found in: Wikipedia 0.04 sec.

spectral line

Dark line visible in an absorption spectrum, or one of the bright lines that make up an emission spectrum. Spectral lines are caused by the transfer of an electron in an atom from one energy level to another; strong lines are produced at levels at which such transfer occurs easily, weak where it occurs with difficulty. Ionization of certain elements can affect such transfers and cause problems in spectral analysis.
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In practice, specific calibration curves of peak widths as a function of wavelength must be obtained for emission lines belonging to the K, L, or M series since these lines of similar energy do not only exhibit shape changes but also have different peak widths [4].
Decomposition of wavelength dispersive X-Ray spectra by Roques-Carmes, Claude / Journal of Research of the National Institute of Standards and Technology
In addition to pulsar observing, COBRA will be used for other online observations, for example methanol emission lines from astronomical objects.
New Supercluster to Probe Secrets of the Universe; Large Supercluster ... by Business Wire
The wavelength calibration for a scanning instrument is the relation between the motor steps that determine the grating angle and the monochromator wavelength, and is determined typically from the emission lines of a Hg lamp.
The 1997 North American interagency Intercomparison of Ultraviolet ... by Beaubien, Arthur / Journal of Research of the National Institute of Standards and Technology
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