SCINTILLATOR

Scintillator

A scintillator is a material that exhibits scintillation — the property of luminescence when excited by ionizing radiation. Luminescent materials, when struck by an incoming particle, absorb its energy and scintillate, . Sometimes, the excited state is metastable, so the relaxation back down from the excited state to lower states is delayed : the process then corresponds to either one of two phenomena, depending on the type of transition and hence the wavelength of the emitted optical photon: delayed fluorescence or phosphorescence, also called after-glow.

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scintillator

Noun

  1. Any substance that glows under the action of photons or other high-energy particles


The above text is a snippet from Wiktionary: scintillator
and as such is available under the Creative Commons Attribution/Share-Alike License.

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