Nonproportionality of Scintillator Detectors. V. Comparing the Gamma and Electron Response

Beck, Patrick R.; Payne, Stephen A.; Hunter, Steven; Ahle, Larry; Cherepy, Nerine J.; Swanberg, Erik L.

doi:10.1109/tns.2015.2414357

Nonproportionality of Scintillator Detectors. V. Comparing the Gamma and Electron Response

Journal Article · Thu Jun 04 00:00:00 EDT 2015 · IEEE Transactions on Nuclear Science

DOI:https://doi.org/10.1109/tns.2015.2414357· OSTI ID:1986112

Beck, Patrick R. ^[1]; Payne, Stephen A. ^[1]; Hunter, Steven ^[1]; Ahle, Larry ^[1]; Cherepy, Nerine J. ^[1]; Swanberg, Erik L. ^[1]

Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

This paper is the fifth in a series of articles on the basic physics of light yield nonproportionality in scintillators. Here, we compare and contrast the nonproportionality as registered by gamma rays and high-energy electrons. As has been noted in the past, these two types of data have different curve shapes (for plots of the light yield against electron or gamma energy). Herein, we show how the experimental gamma nonproportionality curve can be calculated from the electron response by accounting for the distribution of high energy electrons created by the gamma photon via the photoelectric interaction. Similarly, we measure and model the gamma-induced resolution as a function of energy and compare this data to predictions from our model. The utility of the model is explored using data acquired with the scintillators SrI₂ (Eu), GYGAG(Ce) and CsI(Na).

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation

Grant/Contract Number:: AC03-76SF00098; AC52-07NA27344

OSTI ID:: 1986112

Report Number(s):: LLNL-JRNL-661940; 783213

Journal Information:: IEEE Transactions on Nuclear Science, Journal Name: IEEE Transactions on Nuclear Science Journal Issue: 3 Vol. 62; ISSN 0018-9499

Publisher:: IEEECopyright Statement

Country of Publication:: United States

Language:: English

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