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Efficiency of electron-hole pair production in scintillators

Phenomenological models for electron-hole pair production in scintillators are reviewed. All models provide similar results when compared on the basis of consistent definitions. The assumption of constant loss parameter K is untenable. The loss parameter K( E) was calculated from first principles by...

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Bibliographic Details
Published in:Journal of luminescence 1996-06, Vol.68 (5), p.225-240
Main Authors: Bartram, R.H., Lempicki, A.
Format: Article
Language:English
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Summary:Phenomenological models for electron-hole pair production in scintillators are reviewed. All models provide similar results when compared on the basis of consistent definitions. The assumption of constant loss parameter K is untenable. The loss parameter K( E) was calculated from first principles by employing a dielectric response function derived from the Callaway model. The rapid variation of K( E) suggests replacement of K by an effective threshold displacement, ΔE, which is appreciable for semiconductors but negligible for insulators. The prediction of high conversion efficiency, β ≅ 1.0, implies low transfer efficiency, S < 1, in most insulators.
ISSN:0022-2313
1872-7883
DOI:10.1016/0022-2313(96)00026-9