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The role of different linear and non-linear channels of relaxation in scintillator non-proportionality

Bizarri, G., Moses, W., Singh, Jai, Vasil'ev, A. and Williams, R. (2009). The role of different linear and non-linear channels of relaxation in scintillator non-proportionality. Journal of Luminescence,129(12):1790-1793.

Document type: Journal Article

IRMA ID 80801245xPUB50
Title The role of different linear and non-linear channels of relaxation in scintillator non-proportionality
Author Bizarri, G.
Moses, W.
Singh, Jai
Vasil'ev, A.
Williams, R.
Journal Name Journal of Luminescence
Publication Date 2009
Volume Number 129
Issue Number 12
ISSN 0022-2313   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-70350026364
Start Page 1790
End Page 1793
Total Pages 4
Place of Publication Amsterdam, Netherlands
Publisher Elsevier BV
HERDC Category C1 - Journal Article (DEST)
Abstract The non-proportional dependence of a scintillator's light yield on primary particle energy is believed to be influenced crucially by the interplay of non-linear kinetic terms in the radiative and non-radiative decay of excitations versus locally deposited excitation density. A calculation of energy deposition, −dE/dx, along the electron track for NaI is presented for an energy range from several electron-volt to 1 MeV. Such results can be used to specify an initial excitation distribution, if diffusion is neglected. An exactly solvable two-channel (exciton and hole(electron)) model containing 1st and 2nd order kinetic terms is constructed and used to illustrate important features seen in non-proportional light-yield curves, including a dependence on pulse shaping (detection gate width).
DOI http://dx.doi.org/10.1016/j.jlumin.2008.12.024   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
 
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Created: Mon, 22 Mar 2010, 12:23:48 CST by Sarena Wegener