Bismuth- and lithium-loaded plastic scintillators for gamma and neutron detection

Cherepy, Nerine J.; Sanner, Robert D.; Beck, Patrick R.; Swanberg, Erik L.; Tillotson, Thomas M.; Payne, Stephen A.; Hurlbut, Charles R.

doi:10.1016/j.nima.2015.01.008

Title: Bismuth- and lithium-loaded plastic scintillators for gamma and neutron detection

Journal Article · Fri Jan 09 00:00:00 EST 2015 · Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment

DOI:https://doi.org/10.1016/j.nima.2015.01.008· OSTI ID:1438692

Cherepy, Nerine J. ^[1]; Sanner, Robert D. ^[1]; Beck, Patrick R. ^[1]; Swanberg, Erik L. ^[1]; Tillotson, Thomas M. ^[1]; Payne, Stephen A. ^[1]; Hurlbut, Charles R. ^[2]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Eljen Technology, Sweetwater, TX (United States)

In this paper, transparent plastic scintillators based on polyvinyltoluene (PVT) have been fabricated with high loading of bismuth carboxylates for gamma spectroscopy, and with lithium carboxylates for neutron detection. When activated with a combination of standard fluors, 2,5-diphenyloxazole (PPO) and tetraphenylbutadiene (TPB), gamma light yields with 15 wt% bismuth tripivalate of 5000 Ph/MeV are measured. A PVT plastic formulation including 30 wt% lithium pivalate and 30 wt% PPO offers both pulse shape discrimination, and a neutron capture peak at ~400 keVee. Finally, in another configuration, a bismuth-loaded PVT plastic is coated with ZnS(⁶Li) paint, permitting simultaneous gamma and neutron detection via pulse shape discrimination with a figure-of-merit of 3.8, while offering gamma spectroscopy with energy resolution of R(662 keV)=15%.

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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:: AC52-07NA27344

OSTI ID:: 1438692

Alternate ID(s):: OSTI ID: 1245661

Report Number(s):: LLNL-JRNL-663264; TRN: US1900488

Journal Information:: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 778; ISSN 0168-9002

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 70 works

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High-Z Sensitized Plastic Scintillators: A Review Hajagos, Tibor Jacob; Liu, Chao; Cherepy, Nerine J. Advanced Materials, Vol. 30, Issue 27 https://doi.org/10.1002/adma.201706956	journal	May 2018
Evaluation of polyvinyl toluene scintillators for fast neutron imaging Chuirazzi, William C.; Oksuz, Ibrahim; Kandlakunta, Praneeth Journal of Radioanalytical and Nuclear Chemistry, Vol. 318, Issue 1 https://doi.org/10.1007/s10967-018-6080-1	journal	August 2018
The crystal structure of bis{3,5-difluoro-2-[4-(2,4,6-trimethylphenyl)pyridin-2-yl]phenyl}(picolinato)iridium(III) and its 4- tert -butylpyridin-2-yl analogue Sanner, Robert D.; Young, Victor G. Acta Crystallographica Section E Crystallographic Communications, Vol. 74, Issue 10 https://doi.org/10.1107/s2056989018012409	journal	September 2018
Optimization of the Charge Comparison Method for Multiradiation Field Using Various Measurement Systems Lynde, C.; Montbarbon, E.; Hamel, M. IEEE Transactions on Nuclear Science, Vol. 67, Issue 4 https://doi.org/10.1109/tns.2020.2966886	journal	April 2020
Pseudo-gamma Spectrometry in Plastic Scintillators Hamel, Matthieu; Carrel, Frédérick New Insights on Gamma Rays https://doi.org/10.5772/67134	book	May 2017

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Title: Bismuth- and lithium-loaded plastic scintillators for gamma and neutron detection

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