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Excitonic processes and their contribution to nonproportionality observed in the light yield of inorganic scintillators

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  • Jai Singh
  • Alexander Koblov

Abstract

Using the derived expression for the light yield in a scintillator, the influence of linear radiative and non-radiative (quenching) rates on the nonproportionality in light yield is studied. It is found that if the excitation created within the electron track initiated by a γ-photon incident on a scintillator remains mainly excitonic, then nonproportionality can be minimised by inventing a scintillator material with linear radiative rate >10 7 s −1 , linear quenching rate >10 6 s −1 and track radius ≥70 nm along with maintaining the rates of other nonlinear processes as discovered earlier. If one can increase the linear radiative rate to 10 9 s −1 , then the nonproportionality can be eliminated at a track radius >20 nm. Copyright EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2013

Suggested Citation

  • Jai Singh & Alexander Koblov, 2013. "Excitonic processes and their contribution to nonproportionality observed in the light yield of inorganic scintillators," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 86(2), pages 1-6, February.
    • Handle: RePEc:spr:eurphb:v:86:y:2013:i:2:p:1-6:10.1140/epjb/e2012-30693-9
    DOI: 10.1140/epjb/e2012-30693-9
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