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Evaluation of CdZnTeSe as a high-quality gamma-ray spectroscopic material with better compositional homogeneity and reduced defects

X- and gamma-ray detectors have broad applications ranging from medical imaging to security, non-proliferation, high-energy physics and astrophysics. Detectors with high energy resolution, e.g. less than 1.5% resolution at 662 keV at room temperature, are critically important in most uses. The effic...

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Autores principales: Roy, Utpal N., Camarda, Giuseppe S., Cui, Yonggang, Gul, Rubi, Yang, Ge, Zazvorka, Jakub, Dedic, Vaclav, Franc, Jan, James, Ralph B.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6513868/
https://www.ncbi.nlm.nih.gov/pubmed/31086249
http://dx.doi.org/10.1038/s41598-019-43778-3
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author Roy, Utpal N.
Camarda, Giuseppe S.
Cui, Yonggang
Gul, Rubi
Yang, Ge
Zazvorka, Jakub
Dedic, Vaclav
Franc, Jan
James, Ralph B.
author_facet Roy, Utpal N.
Camarda, Giuseppe S.
Cui, Yonggang
Gul, Rubi
Yang, Ge
Zazvorka, Jakub
Dedic, Vaclav
Franc, Jan
James, Ralph B.
author_sort Roy, Utpal N.
collection PubMed
description X- and gamma-ray detectors have broad applications ranging from medical imaging to security, non-proliferation, high-energy physics and astrophysics. Detectors with high energy resolution, e.g. less than 1.5% resolution at 662 keV at room temperature, are critically important in most uses. The efficacy of adding selenium to the cadmium zinc telluride (CdZnTe) matrix for radiation detector applications has been studied. In this paper, the growth of a new quaternary compound Cd(0.9)Zn(0.1)Te(0.98)Se(0.02) by the Traveling Heater Method (THM) is reported. The crystals possess a very high compositional homogeneity with less extended defects, such as secondary phases and sub-grain boundary networks. Virtual Frisch-grid detectors fabricated from as-grown ingots revealed ~0.87–1.5% energy resolution for 662-keV gamma rays. The superior material quality with a very low density of defects and very high compositional homogeneity heightens the likelihood that Cd(0.9)Zn(0.1)Te(0.98)Se(0.02) will be the next generation room-temperature detector material.
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spelling pubmed-65138682019-05-24 Evaluation of CdZnTeSe as a high-quality gamma-ray spectroscopic material with better compositional homogeneity and reduced defects Roy, Utpal N. Camarda, Giuseppe S. Cui, Yonggang Gul, Rubi Yang, Ge Zazvorka, Jakub Dedic, Vaclav Franc, Jan James, Ralph B. Sci Rep Article X- and gamma-ray detectors have broad applications ranging from medical imaging to security, non-proliferation, high-energy physics and astrophysics. Detectors with high energy resolution, e.g. less than 1.5% resolution at 662 keV at room temperature, are critically important in most uses. The efficacy of adding selenium to the cadmium zinc telluride (CdZnTe) matrix for radiation detector applications has been studied. In this paper, the growth of a new quaternary compound Cd(0.9)Zn(0.1)Te(0.98)Se(0.02) by the Traveling Heater Method (THM) is reported. The crystals possess a very high compositional homogeneity with less extended defects, such as secondary phases and sub-grain boundary networks. Virtual Frisch-grid detectors fabricated from as-grown ingots revealed ~0.87–1.5% energy resolution for 662-keV gamma rays. The superior material quality with a very low density of defects and very high compositional homogeneity heightens the likelihood that Cd(0.9)Zn(0.1)Te(0.98)Se(0.02) will be the next generation room-temperature detector material. Nature Publishing Group UK 2019-05-13 /pmc/articles/PMC6513868/ /pubmed/31086249 http://dx.doi.org/10.1038/s41598-019-43778-3 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Roy, Utpal N.
Camarda, Giuseppe S.
Cui, Yonggang
Gul, Rubi
Yang, Ge
Zazvorka, Jakub
Dedic, Vaclav
Franc, Jan
James, Ralph B.
Evaluation of CdZnTeSe as a high-quality gamma-ray spectroscopic material with better compositional homogeneity and reduced defects
title Evaluation of CdZnTeSe as a high-quality gamma-ray spectroscopic material with better compositional homogeneity and reduced defects
title_full Evaluation of CdZnTeSe as a high-quality gamma-ray spectroscopic material with better compositional homogeneity and reduced defects
title_fullStr Evaluation of CdZnTeSe as a high-quality gamma-ray spectroscopic material with better compositional homogeneity and reduced defects
title_full_unstemmed Evaluation of CdZnTeSe as a high-quality gamma-ray spectroscopic material with better compositional homogeneity and reduced defects
title_short Evaluation of CdZnTeSe as a high-quality gamma-ray spectroscopic material with better compositional homogeneity and reduced defects
title_sort evaluation of cdzntese as a high-quality gamma-ray spectroscopic material with better compositional homogeneity and reduced defects
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6513868/
https://www.ncbi.nlm.nih.gov/pubmed/31086249
http://dx.doi.org/10.1038/s41598-019-43778-3
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