TERMIUM Plus®

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PHOTO-ABSORPTION SPECTROSCOPY [1 record]

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Record 1 2017-01-26

English

Subject field(s)
  • Physics
  • Analytical Chemistry
CONT

In photoabsorption spectroscopy, the intensity of monochromatic light passing through a sample is measured, as a function of wavelength (or energy), using a photosensitive detector like a photomultiplier or a photodiode. A decrease in this transmitted intensity, which appears as a dip in the baseline of incident intensity, when intensity is plotted versus wavelength, indicates the occurrence of an electronic or molecular transition in the sample.

Key term(s)
  • photo-absorption spectroscopy

French

Domaine(s)
  • Physique
  • Chimie analytique
CONT

Élucidation de la structure et la compréhension de la réactivité d'ions moléculaires et d'agrégats ionisés. Ceci requiert la mise en œuvre de techniques complémentaires : spectroscopie de photoabsorption et photoélectroniques (utilisation du rayonnement du synchrotron) [...]

Spanish

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