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Beta particle energy spectra shift due to self-attenuation effects in environmental sources

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Beta particle energy spectra shift due to self-attenuation effects in environmental sources. / Alton, Thomas Theakston; David Monk, Stephen; Cheneler, David.

In: Nuclear Engineering and Technology, Vol. 49, No. 7, 10.2017, p. 1483-1488.

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Alton, Thomas Theakston ; David Monk, Stephen ; Cheneler, David. / Beta particle energy spectra shift due to self-attenuation effects in environmental sources. In: Nuclear Engineering and Technology. 2017 ; Vol. 49, No. 7. pp. 1483-1488.

Bibtex

@article{d68984d278f84cf085b9c09d6dca7052,
title = "Beta particle energy spectra shift due to self-attenuation effects in environmental sources",
abstract = "In order to predict and control the environmental and health impacts of ionising radiation in environmental sources such as groundwater, it is necessary to identify the radionuclides present. Beta-emitting radionuclides are frequently identified by measuring their characteristic energy spectra. The present work shows that self-attenuation effects from volume sources result in a geometry-dependent shift in the characteristic spectra which needs to be taken into account in order to correctly identify the radionuclides present. These effects are shown to be compounded due to the subsequent shift in the photon spectra produced by the detector, in this case an inorganic solid scintillator (CaF2:Eu) monitored using a Silicon Photomultiplier (SiPM). Using tritiated water as an environmentally relevant, and notoriously difficult to monitor case study, analytical predictions for the shift in the energy spectra as a function of depth of source have been derived. These predictions have been validated using Geant4 simulations and experimental results measured using bespoke instrumentation.",
keywords = "Attenuation, Geant4, Scintillator, Tritium",
author = "Alton, {Thomas Theakston} and {David Monk}, Stephen and David Cheneler",
year = "2017",
month = oct,
doi = "10.1016/j.net.2017.05.001",
language = "English",
volume = "49",
pages = "1483--1488",
journal = "Nuclear Engineering and Technology",
issn = "1738-5733",
publisher = "Korean Nuclear Society",
number = "7",

}

RIS

TY - JOUR

T1 - Beta particle energy spectra shift due to self-attenuation effects in environmental sources

AU - Alton, Thomas Theakston

AU - David Monk, Stephen

AU - Cheneler, David

PY - 2017/10

Y1 - 2017/10

N2 - In order to predict and control the environmental and health impacts of ionising radiation in environmental sources such as groundwater, it is necessary to identify the radionuclides present. Beta-emitting radionuclides are frequently identified by measuring their characteristic energy spectra. The present work shows that self-attenuation effects from volume sources result in a geometry-dependent shift in the characteristic spectra which needs to be taken into account in order to correctly identify the radionuclides present. These effects are shown to be compounded due to the subsequent shift in the photon spectra produced by the detector, in this case an inorganic solid scintillator (CaF2:Eu) monitored using a Silicon Photomultiplier (SiPM). Using tritiated water as an environmentally relevant, and notoriously difficult to monitor case study, analytical predictions for the shift in the energy spectra as a function of depth of source have been derived. These predictions have been validated using Geant4 simulations and experimental results measured using bespoke instrumentation.

AB - In order to predict and control the environmental and health impacts of ionising radiation in environmental sources such as groundwater, it is necessary to identify the radionuclides present. Beta-emitting radionuclides are frequently identified by measuring their characteristic energy spectra. The present work shows that self-attenuation effects from volume sources result in a geometry-dependent shift in the characteristic spectra which needs to be taken into account in order to correctly identify the radionuclides present. These effects are shown to be compounded due to the subsequent shift in the photon spectra produced by the detector, in this case an inorganic solid scintillator (CaF2:Eu) monitored using a Silicon Photomultiplier (SiPM). Using tritiated water as an environmentally relevant, and notoriously difficult to monitor case study, analytical predictions for the shift in the energy spectra as a function of depth of source have been derived. These predictions have been validated using Geant4 simulations and experimental results measured using bespoke instrumentation.

KW - Attenuation

KW - Geant4

KW - Scintillator

KW - Tritium

U2 - 10.1016/j.net.2017.05.001

DO - 10.1016/j.net.2017.05.001

M3 - Journal article

VL - 49

SP - 1483

EP - 1488

JO - Nuclear Engineering and Technology

JF - Nuclear Engineering and Technology

SN - 1738-5733

IS - 7

ER -