Concept information
Término preferido
spectral line shape
Definición
- Spectral line shape describes the form of a feature, observed in spectroscopy, corresponding to an energy change in an atom, molecule or ion. This shape is also referred to as the spectral line profile. Ideal line shapes include Lorentzian, Gaussian and Voigt functions, whose parameters are the line position, maximum height and half-width. Actual line shapes are determined principally by Doppler, collision and proximity broadening. For each system the half-width of the shape function varies with temperature, pressure (or concentration) and phase. A knowledge of shape function is needed for spectroscopic curve fitting and deconvolution. (Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Spectral_line_shape)
Concepto genérico
Conceptos específicos
etiqueta alternativa (skos)
- spectral line profile
En otras lenguas
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francés
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profil de raie spectrale
URI
http://data.loterre.fr/ark:/67375/MDL-W80T023G-L
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