Cooling rate effects in the thermal and optical excitation of LiF:Mg,Ti

L. Oster; S. Druzhyna; Y. S. Horowitz

doi:10.1016/j.radmeas.2011.04.035

Cooling rate effects in the thermal and optical excitation of LiF:Mg,Ti

L. Oster, S. Druzhyna, Y. S. Horowitz

Department of Physics

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

2 Scopus citations

Abstract

The effects of cooling rate following the 400 °C pre-irradiation anneal on the structure of the TL glow-curve of LiF:Mg,Ti and the optical conversion of peak 5a→4 following beta irradiation are investigated in both "slow-cooled" and "naturally-cooled" samples. Computerised glow curve deconvolution is employed with constrained "peak-shape" parameters deduced from anciliary studies using 4 eV and 5 eV optical excitation. It is demonstrated that "slow-cooling" using linear cooling rates of 100 °C/h and 30 °C/h increases the intensity of glow peak 5a and decreases the intensity of peaks 4 and 5 relative to the normal/rapid cooling rates. Serendipitously, the conversion efficiency of peak 5a→4 at a cooling rate of 100 °C/h is found to be ∼ unity indicative of an approximate one-to-one correspondence between the peak 5a and peak 4 configurations.

Original language	English
Pages (from-to)	1406-1409
Number of pages	4
Journal	Radiation Measurements
Volume	46
Issue number	12
DOIs	https://doi.org/10.1016/j.radmeas.2011.04.035
State	Published - 1 Dec 2011

Keywords

Conversion Efficiency
Cooling Rate
LiF:Mg,Ti
Thermoliminescence

ASJC Scopus subject areas

Radiation
Instrumentation

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10.1016/j.radmeas.2011.04.035

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title = "Cooling rate effects in the thermal and optical excitation of LiF:Mg,Ti",

abstract = "The effects of cooling rate following the 400 °C pre-irradiation anneal on the structure of the TL glow-curve of LiF:Mg,Ti and the optical conversion of peak 5a→4 following beta irradiation are investigated in both {"}slow-cooled{"} and {"}naturally-cooled{"} samples. Computerised glow curve deconvolution is employed with constrained {"}peak-shape{"} parameters deduced from anciliary studies using 4 eV and 5 eV optical excitation. It is demonstrated that {"}slow-cooling{"} using linear cooling rates of 100 °C/h and 30 °C/h increases the intensity of glow peak 5a and decreases the intensity of peaks 4 and 5 relative to the normal/rapid cooling rates. Serendipitously, the conversion efficiency of peak 5a→4 at a cooling rate of 100 °C/h is found to be ∼ unity indicative of an approximate one-to-one correspondence between the peak 5a and peak 4 configurations.",

keywords = "Conversion Efficiency, Cooling Rate, LiF:Mg,Ti, Thermoliminescence",

author = "L. Oster and S. Druzhyna and Horowitz, {Y. S.}",

note = "Funding Information: This research was supported by the Internal funding program of the Sami Shamoon College of Engineering (SCE) .",

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doi = "10.1016/j.radmeas.2011.04.035",

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T1 - Cooling rate effects in the thermal and optical excitation of LiF:Mg,Ti

AU - Oster, L.

AU - Druzhyna, S.

AU - Horowitz, Y. S.

N1 - Funding Information: This research was supported by the Internal funding program of the Sami Shamoon College of Engineering (SCE) .

PY - 2011/12/1

Y1 - 2011/12/1

N2 - The effects of cooling rate following the 400 °C pre-irradiation anneal on the structure of the TL glow-curve of LiF:Mg,Ti and the optical conversion of peak 5a→4 following beta irradiation are investigated in both "slow-cooled" and "naturally-cooled" samples. Computerised glow curve deconvolution is employed with constrained "peak-shape" parameters deduced from anciliary studies using 4 eV and 5 eV optical excitation. It is demonstrated that "slow-cooling" using linear cooling rates of 100 °C/h and 30 °C/h increases the intensity of glow peak 5a and decreases the intensity of peaks 4 and 5 relative to the normal/rapid cooling rates. Serendipitously, the conversion efficiency of peak 5a→4 at a cooling rate of 100 °C/h is found to be ∼ unity indicative of an approximate one-to-one correspondence between the peak 5a and peak 4 configurations.

AB - The effects of cooling rate following the 400 °C pre-irradiation anneal on the structure of the TL glow-curve of LiF:Mg,Ti and the optical conversion of peak 5a→4 following beta irradiation are investigated in both "slow-cooled" and "naturally-cooled" samples. Computerised glow curve deconvolution is employed with constrained "peak-shape" parameters deduced from anciliary studies using 4 eV and 5 eV optical excitation. It is demonstrated that "slow-cooling" using linear cooling rates of 100 °C/h and 30 °C/h increases the intensity of glow peak 5a and decreases the intensity of peaks 4 and 5 relative to the normal/rapid cooling rates. Serendipitously, the conversion efficiency of peak 5a→4 at a cooling rate of 100 °C/h is found to be ∼ unity indicative of an approximate one-to-one correspondence between the peak 5a and peak 4 configurations.

KW - Conversion Efficiency

KW - Cooling Rate

KW - LiF:Mg,Ti

KW - Thermoliminescence

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U2 - 10.1016/j.radmeas.2011.04.035

DO - 10.1016/j.radmeas.2011.04.035

M3 - Article

AN - SCOPUS:82355186624

SN - 1350-4487

VL - 46

SP - 1406

EP - 1409

JO - Radiation Measurements

JF - Radiation Measurements

IS - 12

ER -

Cooling rate effects in the thermal and optical excitation of LiF:Mg,Ti

Abstract

Keywords

ASJC Scopus subject areas

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