line broadening

line broadening

      in spectroscopy, the spreading across a greater wavelength, or frequency range, of absorption lines (dark) or emission lines (bright) in the radiation received from some object. The broadening is partly an extremely small intrinsic effect produced within the absorbing or radiating atom (natural broadening) that is related to the Heisenberg uncertainty principle; it can include effects due to external conditions also, such as collisions with other atoms, motion of the radiating or absorbing body toward or away from the observer, turbulence in the radiating or absorbing medium, rotation, or electrical or magnetic fields acting on the atom. Natural broadening is always present, is the same at all wavelengths, and is very small. The other effects are of varying importance, for they depend on the conditions under which the line is formed.

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Universalium. 2010.

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Look at other dictionaries:

  • line broadening — linijos išplitimas statusas T sritis radioelektronika atitikmenys: angl. line broadening; line widening vok. Linienverbreiterung, f rus. уширение линии, n pranc. élargissement des raies, m …   Radioelektronikos terminų žodynas

  • line broadening by radiation damping — natūralusis linijos išplitimas statusas T sritis fizika atitikmenys: angl. line broadening by radiation damping; natural broadening; radiation broadening vok. Linienverbreiterung durch Strahlungsdämpfung, f; natürliche Linienverbreiterung, f;… …   Fizikos terminų žodynas

  • spectral line broadening — spektro linijos išplitimas statusas T sritis fizika atitikmenys: angl. spectral line broadening; spectral line widening vok. Linienverbreiterung, f; Spektrallinienverbreiterung, f rus. уширение спектральной линии, n pranc. élargissement de la… …   Fizikos terminų žodynas

  • laser-line broadening — lazerio linijos išplitimas statusas T sritis radioelektronika atitikmenys: angl. laser line broadening vok. Laserlinienausdehnung, f rus. уширение линии излучения лазера, n pranc. élargissement de raie de rayonnement laser, m …   Radioelektronikos terminų žodynas

  • line widening — linijos išplitimas statusas T sritis radioelektronika atitikmenys: angl. line broadening; line widening vok. Linienverbreiterung, f rus. уширение линии, n pranc. élargissement des raies, m …   Radioelektronikos terminų žodynas

  • line — line1 [ laın ] noun *** ▸ 1 long thin mark ▸ 2 edge showing shape ▸ 3 border/limit ▸ 4 telephone connection ▸ 5 row of people/things ▸ 6 part of railroad system ▸ 7 transportation company ▸ 8 way of thinking/talking ▸ 9 series of words ▸ 10… …   Usage of the words and phrases in modern English

  • line — I UK [laɪn] / US noun Word forms line : singular line plural lines *** 1) [countable] a long thin mark on the surface of something Draw a straight line. Each horizontal line on the graph represents fifteen minutes. a) a long thin mark on the… …   English dictionary

  • Spectral line — Continuous spectrum Emission line …   Wikipedia

  • Doppler broadening — In atomic physics, Doppler broadening is the broadening of spectral lines due to the Doppler effect caused by a distribution of velocities of atoms or molecules. Different velocities of the emitting particles result in different (Doppler) shifts …   Wikipedia

  • natural broadening — natūralusis linijos išplitimas statusas T sritis fizika atitikmenys: angl. line broadening by radiation damping; natural broadening; radiation broadening vok. Linienverbreiterung durch Strahlungsdämpfung, f; natürliche Linienverbreiterung, f;… …   Fizikos terminų žodynas

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