AustralieFrV1, Main, Merge, bibRecord, 008726

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

Identifieur interne : 008726 ( Main/Merge ); précédent : 008725; suivant : 008727

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

Auteurs : G. Bizarri [États-Unis] ; W. W. Moses [États-Unis] ; J. Singh [Australie] ; A. N. Vasil'Ev [Russie] ; R. T. Williams [États-Unis]

Source :

Journal of luminescence [ 0022-2313 ] ; 2009.

RBID : Pascal:10-0043724

Descripteurs français

Pascal (Inist)
- Luminescence, Relaxation, Cinétique, Mobilité porteur charge, Exciton, Pouvoir arrêt, Modélisation, Système 2 canaux, Scintillateur.

English descriptors

KwdEn :
- Carrier mobility, Excitons, Kinetics, Luminescence, Modelling, Relaxation, Scintillator, Stopping power, Two channel system.

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 Nal 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).

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to stream PascalFrancis, to step Corpus: 002930
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Pascal:10-0043724

Le document en format XML

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<front><div type="abstract" xml:lang="en">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 Nal 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).</div>
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The role of different linear and non-linear channels of relaxation in scintillator non-proportionality

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

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri