A short-time fading study of Al2O3:C

L. F. Nascimento; F. Vanhavere; E. H. Silva; Y. De Deene

doi:10.1016/j.radphyschem.2014.06.032

A short-time fading study of Al2O3:C

L. F. Nascimento^*, F. Vanhavere, E. H. Silva, Y. De Deene

^*Corresponding author for this work

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

4 Citations (Scopus)

Abstract

This paper studies the short-time fading from Al₂O₃:C by measuring optically stimulated luminescence (OSL) signals (Total OSL: T_OSL, and Peak OSL: P_OSL) from droplets and Luxel™ pellets. The influence of various bleaching regimes (blue, green and white) and light power is compared. The fading effect is the decay of the OSL signal in the dark at room temperature. Al₂O₃:C detectors were submitted to various bleaching regimes, irradiated with a reference dose and read out after different time spans. Investigations were carried out using 2mm size droplet detectors, made of thin Al₂O₃:C powder mixed with a photocured polymer. Tests were compared to Luxel™-type detectors (Landauer Inc.). Short-time post-irradiation fading is present in OSL results (T_OSL and P_OSL) droplets for time spans up to 200s. The effect of short-time fading can be lowered/removed when treating the detectors with high-power and/or long time bleaching regimes; this result was observed in both T_OSL and P_OSL from droplets and Luxel™.

Original language	English
Pages (from-to)	26-32
Number of pages	7
Journal	Radiation Physics and Chemistry
Volume	106
DOIs	https://doi.org/10.1016/j.radphyschem.2014.06.032
Publication status	Published - Jan 2015
Externally published	Yes

Keywords

Dosimetry
Fading
Optically stimulated luminescence

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10.1016/j.radphyschem.2014.06.032

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title = "A short-time fading study of Al2O3:C",

abstract = "This paper studies the short-time fading from Al2O3:C by measuring optically stimulated luminescence (OSL) signals (Total OSL: TOSL, and Peak OSL: POSL) from droplets and Luxel{\texttrademark} pellets. The influence of various bleaching regimes (blue, green and white) and light power is compared. The fading effect is the decay of the OSL signal in the dark at room temperature. Al2O3:C detectors were submitted to various bleaching regimes, irradiated with a reference dose and read out after different time spans. Investigations were carried out using 2mm size droplet detectors, made of thin Al2O3:C powder mixed with a photocured polymer. Tests were compared to Luxel{\texttrademark}-type detectors (Landauer Inc.). Short-time post-irradiation fading is present in OSL results (TOSL and POSL) droplets for time spans up to 200s. The effect of short-time fading can be lowered/removed when treating the detectors with high-power and/or long time bleaching regimes; this result was observed in both TOSL and POSL from droplets and Luxel{\texttrademark}.",

keywords = "Dosimetry, Fading, Optically stimulated luminescence",

author = "Nascimento, {L. F.} and F. Vanhavere and Silva, {E. H.} and Deene, {Y. De}",

year = "2015",

month = jan,

doi = "10.1016/j.radphyschem.2014.06.032",

language = "English",

volume = "106",

pages = "26--32",

journal = "Radiation Physics and Chemistry",

issn = "0969-806X",

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TY - JOUR

T1 - A short-time fading study of Al2O3:C

AU - Nascimento, L. F.

AU - Vanhavere, F.

AU - Silva, E. H.

AU - Deene, Y. De

PY - 2015/1

Y1 - 2015/1

N2 - This paper studies the short-time fading from Al2O3:C by measuring optically stimulated luminescence (OSL) signals (Total OSL: TOSL, and Peak OSL: POSL) from droplets and Luxel™ pellets. The influence of various bleaching regimes (blue, green and white) and light power is compared. The fading effect is the decay of the OSL signal in the dark at room temperature. Al2O3:C detectors were submitted to various bleaching regimes, irradiated with a reference dose and read out after different time spans. Investigations were carried out using 2mm size droplet detectors, made of thin Al2O3:C powder mixed with a photocured polymer. Tests were compared to Luxel™-type detectors (Landauer Inc.). Short-time post-irradiation fading is present in OSL results (TOSL and POSL) droplets for time spans up to 200s. The effect of short-time fading can be lowered/removed when treating the detectors with high-power and/or long time bleaching regimes; this result was observed in both TOSL and POSL from droplets and Luxel™.

AB - This paper studies the short-time fading from Al2O3:C by measuring optically stimulated luminescence (OSL) signals (Total OSL: TOSL, and Peak OSL: POSL) from droplets and Luxel™ pellets. The influence of various bleaching regimes (blue, green and white) and light power is compared. The fading effect is the decay of the OSL signal in the dark at room temperature. Al2O3:C detectors were submitted to various bleaching regimes, irradiated with a reference dose and read out after different time spans. Investigations were carried out using 2mm size droplet detectors, made of thin Al2O3:C powder mixed with a photocured polymer. Tests were compared to Luxel™-type detectors (Landauer Inc.). Short-time post-irradiation fading is present in OSL results (TOSL and POSL) droplets for time spans up to 200s. The effect of short-time fading can be lowered/removed when treating the detectors with high-power and/or long time bleaching regimes; this result was observed in both TOSL and POSL from droplets and Luxel™.

KW - Dosimetry

KW - Fading

KW - Optically stimulated luminescence

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U2 - 10.1016/j.radphyschem.2014.06.032

DO - 10.1016/j.radphyschem.2014.06.032

M3 - Article

AN - SCOPUS:84904728483

SN - 0969-806X

VL - 106

SP - 26

EP - 32

JO - Radiation Physics and Chemistry

JF - Radiation Physics and Chemistry

ER -

A short-time fading study of Al2O3:C

Abstract

Keywords

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