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Study of nonproportionality in the light yield of inorganic scintillators

Singh, Jai (2011). Study of nonproportionality in the light yield of inorganic scintillators. Journal of Applied Physics,110(2):1-8.

Document type: Journal Article

IRMA ID 82794376xPUB8
Title Study of nonproportionality in the light yield of inorganic scintillators
Author Singh, Jai
Journal Name Journal of Applied Physics
Publication Date 2011
Volume Number 110
Issue Number 2
ISSN 0021-8979 (1089-7550)   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-79961105275
Start Page 1
End Page 8
Total Pages 7
Place of Publication United States
Publisher American Institute of Physics
HERDC Category C1 - Journal Article (DIISR)
Abstract Using a phenomenological approach, the light yield is derived for inorganic scintillators as a function of the rates of linear, bimolecular, and Auger processes occurring in the electron track initiated by an x ray or a γ-ray photon. A relation between the track length and incident energy is also derived. It is found that the nonproportionality in the light yield can be eliminated if either nonlinear processes of interaction among the excited electrons, holes, and excitons can be eliminated from occurring or the high density situation can be relieved by diffusion of carriers from the track at a faster rate than the rate of activation of nonlinear processes. The influence of the track length and radius on the yield nonproportionality is discussed in view of the known experimental results. Inventing new inorganic scintillating materials with high carrier mobility can lead to a class of proportional inorganic scintillators. Results agree qualitatively with experimental results for the dependence of light yield on the incident energy.
Keywords Auger effect
carrier lifetime
carrier mobility
excitons
particle tracks
solid scintillation detectors
DOI http://dx.doi.org/10.1063/1.3607247   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
Description for Link Link to publisher's version
URL http://dx.doi.org/10.1063/1.3607247
 
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Created: Fri, 17 Jan 2014, 00:53:05 CST