Plastic scintillators relative gamma-ray light yield measurement

Mengesha, Wondwosen; Feng, Patrick L.; Cordaro, Joseph Gabriel; Myllenbeck, Nicholas R.; Throckmorton, Daniel J.; Anstey, Mitchell R.

doi:10.1063/1.4978288

Plastic scintillators relative gamma-ray light yield measurement

Journal Article · Tue Feb 28 23:00:00 EST 2017 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4978288· OSTI ID:1333614

Mengesha, Wondwosen ^[1]; Feng, Patrick L. ^[1]; Cordaro, Joseph Gabriel ^[1]; Myllenbeck, Nicholas R. ^[1]; Throckmorton, Daniel J. ^[1]; Anstey, Mitchell R. ^[1]

Sandia National Lab. (SNL-CA), Livermore, CA (United States)

Here we are investigating the inclusion of organotin compounds in polystyrene material to improve plastic scintillators full gamma-ray energy sensitivity with the ultimate goal of achieving spectroscopy. Accurate evaluation of the relative light yield from the newly developed scintillators is crucial to assess merits of compounds and chemical processes used in the scintillators development and assess the scintillation efficiencies of the newly produced scintillators. Full gamma-ray energy peak in the measured gamma-ray spectrum, resulting from total absorption of gamma-ray energy, would be ideal in assessing the relative light yield. However, the significant number of new samples we are producing for investigation lead us to the possibility of using the Compton edge as an alternate spectral feature that can be exploited for expeditious characterization of the relative light yield in plastic scintillators. In this study we present a spectra gain matching approach, using a spectrum rebinning, for accurate relative light yield measurement using the Compton edge.

View Accepted Manuscript (DOE)

Research Organization:: Sandia National Laboratories (SNL-CA), Livermore, CA (United States)

Sponsoring Organization:: DHS-DNDO; USDOE

Grant/Contract Number:: AC04-94AL85000

OSTI ID:: 1333614

Report Number(s):: SAND--2016-7956J; 646658

Journal Information:: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 3 Vol. 88; ISSN 0034-6748

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Related Subjects

36 MATERIALS SCIENCE
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
Compton edge
FFT
energy calibration
gain normalization
plastic scintillators
relative light yield
spectral matching

Plastic scintillators relative gamma-ray light yield measurement

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