TERMIUM Plus®

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LIFETIME LUMINESCENCE [1 record]

Record 1 1997-06-09

English

Subject field(s)
  • Chemistry
DEF

The time required for the luminescence intensity to decay from some initial value to 1/e of that value (e = 2.718 ...).

OBS

Lifetimes can be measured by phase fluorimetry (phosphorimetry) where the phase shift between the sinusoidally modulated exciting light and the emitted light is measured.

French

Domaine(s)
  • Chimie
DEF

[..] temps requis pour que l'intensité de la luminescence décroisse de sa valuer initiale à l/e de cette valeur (e = 2,718).

OBS

On peut mesurer les durées de vie par la fluorimétrie éclair (phosphorimétrie) dans laquelle on mesure le déplacement de phase entre la lumière excitatrice modulée d'une façon sinusoïdale et la lumière émise ou par l'analyse de photons uniques.

Spanish

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