Measurement of photoelectron generation in a gold coated glass slide
In thin low-Z media irradiated by photon energies of several tens of keV, the presence of a high-Z additive can result in manifest locally modified secondary electron dose. Present study analyses the photoelectron dose enhancement resulting from nanometre thickness gold (atomic number Z = 78) coated...
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my.um.eprints.287602022-08-15T07:08:09Z http://eprints.um.edu.my/28760/ Measurement of photoelectron generation in a gold coated glass slide Almugren, K. S. Sani, S. F. Abdul Uguru, E. H. Narissa, N. H. Amiera Zakaria, R. Alkallas, F. H. Bradley, D. A. QC Physics QD Chemistry In thin low-Z media irradiated by photon energies of several tens of keV, the presence of a high-Z additive can result in manifest locally modified secondary electron dose. Present study analyses the photoelectron dose enhancement resulting from nanometre thickness gold (atomic number Z = 78) coated on commercial borosilicate (B2O3) glass microscope cover-slips. Two thicknesses of B2O3 cover-slip have been utilized, 0.13 +/- 0.02 mm and 1.00 +/- 0.01 mm, with single-sided Au coatings of 20, 40, 60, 80 and 100 nm. An additional uncoated glass slide has been kept as a comparator. The samples have been exposed to X-rays generated at kVp potentials, delivering a fixed dose of 2 Gy. Dose enhancement resulting from the 1.00 mm glass has been observed to be similar to 1.32 x that of the 0.13 mm thickness glass. The elemental composition of the samples has been obtained via Electron Dispersive X-ray (EDX), elemental content differences between the two thicknesses of glass leading to a difference in effective atomic number of less than 0.3%. The influence on photon yield of the gold coating and variations in elemental content has been modelled using Monte Carlo simulation, allowing comparison with the measured values of enhanced TL yield. Pergamon-Elsevier Science Ltd 2021-01 Article PeerReviewed Almugren, K. S. and Sani, S. F. Abdul and Uguru, E. H. and Narissa, N. H. Amiera and Zakaria, R. and Alkallas, F. H. and Bradley, D. A. (2021) Measurement of photoelectron generation in a gold coated glass slide. Radiation Physics and Chemistry, 178 (SI). ISSN 0969-806X, DOI https://doi.org/10.1016/j.radphyschem.2020.108913 <https://doi.org/10.1016/j.radphyschem.2020.108913>. 10.1016/j.radphyschem.2020.108913 |
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QC Physics QD Chemistry Almugren, K. S. Sani, S. F. Abdul Uguru, E. H. Narissa, N. H. Amiera Zakaria, R. Alkallas, F. H. Bradley, D. A. Measurement of photoelectron generation in a gold coated glass slide |
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In thin low-Z media irradiated by photon energies of several tens of keV, the presence of a high-Z additive can result in manifest locally modified secondary electron dose. Present study analyses the photoelectron dose enhancement resulting from nanometre thickness gold (atomic number Z = 78) coated on commercial borosilicate (B2O3) glass microscope cover-slips. Two thicknesses of B2O3 cover-slip have been utilized, 0.13 +/- 0.02 mm and 1.00 +/- 0.01 mm, with single-sided Au coatings of 20, 40, 60, 80 and 100 nm. An additional uncoated glass slide has been kept as a comparator. The samples have been exposed to X-rays generated at kVp potentials, delivering a fixed dose of 2 Gy. Dose enhancement resulting from the 1.00 mm glass has been observed to be similar to 1.32 x that of the 0.13 mm thickness glass. The elemental composition of the samples has been obtained via Electron Dispersive X-ray (EDX), elemental content differences between the two thicknesses of glass leading to a difference in effective atomic number of less than 0.3%. The influence on photon yield of the gold coating and variations in elemental content has been modelled using Monte Carlo simulation, allowing comparison with the measured values of enhanced TL yield. |
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Article |
author |
Almugren, K. S. Sani, S. F. Abdul Uguru, E. H. Narissa, N. H. Amiera Zakaria, R. Alkallas, F. H. Bradley, D. A. |
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Almugren, K. S. Sani, S. F. Abdul Uguru, E. H. Narissa, N. H. Amiera Zakaria, R. Alkallas, F. H. Bradley, D. A. |
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Almugren, K. S. |
title |
Measurement of photoelectron generation in a gold coated glass slide |
title_short |
Measurement of photoelectron generation in a gold coated glass slide |
title_full |
Measurement of photoelectron generation in a gold coated glass slide |
title_fullStr |
Measurement of photoelectron generation in a gold coated glass slide |
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Measurement of photoelectron generation in a gold coated glass slide |
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measurement of photoelectron generation in a gold coated glass slide |
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Pergamon-Elsevier Science Ltd |
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2021 |
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http://eprints.um.edu.my/28760/ |
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