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Optical and THz investigations of mid-IR materials exposed to alpha particle irradiation
The paper is the first comprehensive study on alpha particle irradiation effects on four mid-IR materials: CaF(2), BaF(2), Al(2)O(3) (sapphire) and ZnSe. The measurements of the optical spectral transmittance, spectral diffuse reflectance, radioluminescent emission, terahertz (THz) spectral response...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5220343/ https://www.ncbi.nlm.nih.gov/pubmed/28067289 http://dx.doi.org/10.1038/srep40209 |
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author | Sporea, Dan Mihai, Laura Sporea, Adelina Vâţã, Ion |
author_facet | Sporea, Dan Mihai, Laura Sporea, Adelina Vâţã, Ion |
author_sort | Sporea, Dan |
collection | PubMed |
description | The paper is the first comprehensive study on alpha particle irradiation effects on four mid-IR materials: CaF(2), BaF(2), Al(2)O(3) (sapphire) and ZnSe. The measurements of the optical spectral transmittance, spectral diffuse reflectance, radioluminescent emission, terahertz (THz) spectral response, transmittance, absorbance, refractive index, real and imaginary parts of the dielectric constant and THz imaging are used as complementary investigations to evaluate these effects. The simulations were run to estimate: (i) the penetration depth, (ii) the scattering of alpha particle beam, (iii) the amount of material affected by this interaction, and (iv) the number of vacancies produced by the radiation exposure for each type of material. The simulation results are compared to the off-line measurement outcomes. The delay and spectral composition change of the reflected THz signal highlight the modification induced in the tested materials by the irradiation process. |
format | Online Article Text |
id | pubmed-5220343 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-52203432017-01-11 Optical and THz investigations of mid-IR materials exposed to alpha particle irradiation Sporea, Dan Mihai, Laura Sporea, Adelina Vâţã, Ion Sci Rep Article The paper is the first comprehensive study on alpha particle irradiation effects on four mid-IR materials: CaF(2), BaF(2), Al(2)O(3) (sapphire) and ZnSe. The measurements of the optical spectral transmittance, spectral diffuse reflectance, radioluminescent emission, terahertz (THz) spectral response, transmittance, absorbance, refractive index, real and imaginary parts of the dielectric constant and THz imaging are used as complementary investigations to evaluate these effects. The simulations were run to estimate: (i) the penetration depth, (ii) the scattering of alpha particle beam, (iii) the amount of material affected by this interaction, and (iv) the number of vacancies produced by the radiation exposure for each type of material. The simulation results are compared to the off-line measurement outcomes. The delay and spectral composition change of the reflected THz signal highlight the modification induced in the tested materials by the irradiation process. Nature Publishing Group 2017-01-09 /pmc/articles/PMC5220343/ /pubmed/28067289 http://dx.doi.org/10.1038/srep40209 Text en Copyright © 2017, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Sporea, Dan Mihai, Laura Sporea, Adelina Vâţã, Ion Optical and THz investigations of mid-IR materials exposed to alpha particle irradiation |
title | Optical and THz investigations of mid-IR materials exposed to alpha particle irradiation |
title_full | Optical and THz investigations of mid-IR materials exposed to alpha particle irradiation |
title_fullStr | Optical and THz investigations of mid-IR materials exposed to alpha particle irradiation |
title_full_unstemmed | Optical and THz investigations of mid-IR materials exposed to alpha particle irradiation |
title_short | Optical and THz investigations of mid-IR materials exposed to alpha particle irradiation |
title_sort | optical and thz investigations of mid-ir materials exposed to alpha particle irradiation |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5220343/ https://www.ncbi.nlm.nih.gov/pubmed/28067289 http://dx.doi.org/10.1038/srep40209 |
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