Accelerated aging test of new plastic scintillators

Matthew Loyd; Matheus Pianassola; Charles Hurlbut; Kyle Shipp; Natalia Zaitseva; Merry Koschan; Charles L. Melcher; Mariya Zhuravleva

doi:10.1016/j.nima.2019.162918

Accelerated aging test of new plastic scintillators

Matthew Loyd, Matheus Pianassola, Charles Hurlbut, Kyle Shipp, Natalia Zaitseva, Merry Koschan, Charles L. Melcher, Mariya Zhuravleva

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Fogging in plastic scintillators is a degradation mechanism that reduces light collection efficiency. In an effort to reduce maintenance costs, multiple groups have attempted to understand and prevent this problem by changing plastic compositions and system level designs. New formulations have been produced that are promising with respect to fogging resistance. In this current work we study a variety of new compositions by subjecting them to an accelerated aging experiment with varying temperature and humidity profiles. Compositions are analyzed for their resistance to degradation after saturation periods, with those containing polymethyl methacrylate and divinyl benzene being the most promising. Pulse height spectra revealed that after environmental aging, many of the samples suffered a reduction in light yield to different degrees, even those that did not fog. This result could be due to heating of the samples and may be prevented by further production optimization.

Original language	English
Article number	162918
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	949
DOIs	https://doi.org/10.1016/j.nima.2019.162918
State	Published - Jan 1 2020
Externally published	Yes

Funding

This work has been supported by the US Department of Homeland Security, Domestic Nuclear Detection Office, under competitively awarded grant #2017-DN-077-ER0002. This support does not constitute an expressed or implied endorsement on the part of the Government. The authors would like to thank the Center for Materials Processing at the University of Tennessee for additional support. This work has been supported by the US Department of Homeland Security, Domestic Nuclear Detection Office , under competitively awarded grant #2017-DN-077-ER0002 . This support does not constitute an expressed or implied endorsement on the part of the Government. The authors would like to thank the Center for Materials Processing at the University of Tennessee for additional support.

Keywords

Accelerated aging
Gamma detection
Optical microscopy
Scintillator

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10.1016/j.nima.2019.162918

Cite this

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title = "Accelerated aging test of new plastic scintillators",

abstract = "Fogging in plastic scintillators is a degradation mechanism that reduces light collection efficiency. In an effort to reduce maintenance costs, multiple groups have attempted to understand and prevent this problem by changing plastic compositions and system level designs. New formulations have been produced that are promising with respect to fogging resistance. In this current work we study a variety of new compositions by subjecting them to an accelerated aging experiment with varying temperature and humidity profiles. Compositions are analyzed for their resistance to degradation after saturation periods, with those containing polymethyl methacrylate and divinyl benzene being the most promising. Pulse height spectra revealed that after environmental aging, many of the samples suffered a reduction in light yield to different degrees, even those that did not fog. This result could be due to heating of the samples and may be prevented by further production optimization.",

keywords = "Accelerated aging, Gamma detection, Optical microscopy, Scintillator",

author = "Matthew Loyd and Matheus Pianassola and Charles Hurlbut and Kyle Shipp and Natalia Zaitseva and Merry Koschan and Melcher, \{Charles L.\} and Mariya Zhuravleva",

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T1 - Accelerated aging test of new plastic scintillators

AU - Loyd, Matthew

AU - Pianassola, Matheus

AU - Hurlbut, Charles

AU - Shipp, Kyle

AU - Zaitseva, Natalia

AU - Koschan, Merry

AU - Melcher, Charles L.

AU - Zhuravleva, Mariya

PY - 2020/1/1

Y1 - 2020/1/1

N2 - Fogging in plastic scintillators is a degradation mechanism that reduces light collection efficiency. In an effort to reduce maintenance costs, multiple groups have attempted to understand and prevent this problem by changing plastic compositions and system level designs. New formulations have been produced that are promising with respect to fogging resistance. In this current work we study a variety of new compositions by subjecting them to an accelerated aging experiment with varying temperature and humidity profiles. Compositions are analyzed for their resistance to degradation after saturation periods, with those containing polymethyl methacrylate and divinyl benzene being the most promising. Pulse height spectra revealed that after environmental aging, many of the samples suffered a reduction in light yield to different degrees, even those that did not fog. This result could be due to heating of the samples and may be prevented by further production optimization.

AB - Fogging in plastic scintillators is a degradation mechanism that reduces light collection efficiency. In an effort to reduce maintenance costs, multiple groups have attempted to understand and prevent this problem by changing plastic compositions and system level designs. New formulations have been produced that are promising with respect to fogging resistance. In this current work we study a variety of new compositions by subjecting them to an accelerated aging experiment with varying temperature and humidity profiles. Compositions are analyzed for their resistance to degradation after saturation periods, with those containing polymethyl methacrylate and divinyl benzene being the most promising. Pulse height spectra revealed that after environmental aging, many of the samples suffered a reduction in light yield to different degrees, even those that did not fog. This result could be due to heating of the samples and may be prevented by further production optimization.

KW - Accelerated aging

KW - Gamma detection

KW - Optical microscopy

KW - Scintillator

UR - https://www.scopus.com/pages/publications/85073001603

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DO - 10.1016/j.nima.2019.162918

M3 - Article

AN - SCOPUS:85073001603

SN - 0168-9002

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JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

M1 - 162918

ER -

Accelerated aging test of new plastic scintillators

Abstract

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Keywords

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