absorption edge

a discontinuity in the graph of the absorption coefficient of a substance plotted against the wavelength of x-rays being absorbed, representing the minimum energy necessary to free electrons from particular shells of the atoms of the substance. Also called absorption discontinuity, absorption limit.
[1925-29]

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      in physics, abrupt increase in the degree of absorption of electromagnetic radiation by a substance as the frequency of the radiation is increased. Absorption edges are particularly characteristic of the behaviour of X-rays (X-ray) and are related to the sharply defined levels of energy that electrons (electron) occupy in atoms (atom).

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Universalium. 2010.

Look at other dictionaries:

  • absorption edge — sugerties kraštas statusas T sritis fizika atitikmenys: angl. absorption discontinuity; absorption edge; absorption limit vok. Absorptionskante, f rus. граница полосы поглощения, f; край полосы поглощения, m pranc. limite d’absorption, f …   Fizikos terminų žodynas

  • Absorption edge — An absorption edge is a sharp discontinuity in the absorption spectrum of X rays by an element that occurs when the energy of the photon corresponds to the energy of a shell of the atom …   Wikipedia

  • absorption edge — noun : a clear cut long wavelength boundary of an absorption band in an X ray spectrum * * * Physics. a discontinuity in the graph of the absorption coefficient of a substance plotted against the wavelength of x rays being absorbed, representing… …   Useful english dictionary

  • absorption edge — The wavelength at which there is an abrupt discontinuity in the intensity of an absorption spectrum for electromagnetic waves, giving the appearance of a sharp edge in its photograph. The transition is due to one particular energy dissipating… …   Dictionary of automotive terms

  • absorption edge shift — sugerties krašto poslinkis statusas T sritis fizika atitikmenys: angl. absorption edge shift vok. Verschiebung der Absorptionskante, f rus. смещение края полосы поглощения, n pranc. décalage de limite d’absorption, m …   Fizikos terminų žodynas

  • intrinsic absorption edge — savosios sugerties kraštas statusas T sritis fizika atitikmenys: angl. intrinsic absorption edge vok. Eigenabsorptionskante, f rus. край собственного поглощения, m pranc. bord d’absorption intrinsèque, m …   Fizikos terminų žodynas

  • absorption discontinuity — sugerties kraštas statusas T sritis fizika atitikmenys: angl. absorption discontinuity; absorption edge; absorption limit vok. Absorptionskante, f rus. граница полосы поглощения, f; край полосы поглощения, m pranc. limite d’absorption, f …   Fizikos terminų žodynas

  • absorption limit — sugerties kraštas statusas T sritis fizika atitikmenys: angl. absorption discontinuity; absorption edge; absorption limit vok. Absorptionskante, f rus. граница полосы поглощения, f; край полосы поглощения, m pranc. limite d’absorption, f …   Fizikos terminų žodynas

  • absorption discontinuity — See absorption edge …   Dictionary of automotive terms

  • Absorption cross section — is a measure for the probability of an absorption process. More generally, the term cross section is used in physics to quantify the probability of a certain particle particle interaction, e.g., scattering, photoabsorption, etc. (Note that light… …   Wikipedia

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