Effect of high gamma doses on the sensitization of natural quartz used for thermoluminescence dosimetry

Khoury, Helen J.; Guzzo, Pedro L.; Brito, Sandra B.; Hazin, C.A.

doi:10.1080/10420150601035490

Cited by 20 publications

(12 citation statements)

References 1 publication

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“…Other luminescence features such as bleaching rates, thermal quenching and the inter-relation between these peaks through optical stimulation, the socalled photo transferred TL (PTTL) (Kaylor et al, 1995) support the connection between them throughout the use of the same luminescence centre (Bailey, 2001;Itoh, 2002;Guzzo et al, 2006;Khoury et al, 2007). In the present study, another luminescence feature, namely the correlation of the TL output between the HTTLPS and the corresponding of the 110°C TL peak in the case of annealed quartz samples, further supports this aforementioned connection.…”

Section: Correlationsupporting

confidence: 63%

Behavior of various Nigerian quartz samples to repeated irradiation and heating

Oniya¹,

Polymeris

Tsirliganis

et al. 2012

Geochronometria

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Abstract:In the present work the sensitization of the entire glow-curve is studied in 6 different quartz samples of Nigerian origin. The investigation was applied to the un-fired "as is" samples as well as to samples fired at 900°C for 1 hour following cooling to room temperature. The results showed that in the case of "as is" glow-curve is sensitized as a whole. There is an abrupt transition from the "natural" sensitivity without any previous heating and the artificial sensitivity induced after the first heating. The sensitization is growing up strongly to the 10 th heating but to a lower rate. The sensitization factor of the TL glow-peak at "110°C" was found to be linearly correlated to the higher temperature TL peaks. In the case of annealed samples there is an initial increase between the sensitivity immediately after the end of annealing and after the first heating. As the number of heating is increased up to the 10 th heating the sensitization is stabilized at a constant value. The results are discussed in the framework of existing models and implications of the sensitization effect in various applications, while some explanations are attempted.

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Section: Correlationsupporting

confidence: 63%

Behavior of various Nigerian quartz samples to repeated irradiation and heating

Oniya¹,

Polymeris

Tsirliganis

et al. 2012

Geochronometria

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“…The sensitization of 110, 220, 300 and 325°C TL peaks in quartz samples using b or c pre-doses in the range of 0.05-175 kGy followed by post-irradiation heat treatment from 200 to 1200°C have been reported by many authors [15][16][17][18][19][20][21][22][23][24]. Among minerals, muscovite mica is one of the most inexpensive and abundant mineral that has enormous dosimetric and dating potentials [3].…”

Section: Introductionmentioning

confidence: 99%

Pre-gamma dose thermoluminescence characteristics of muscovite mica

Kaur

Singh

et al. 2012

Nuclear Instruments and Methods in Physics Research Section B:

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“…Recently, the possibility to produce a strong TL peak near 300 °C in natural quartzes taken from different deposits was reported [13][14][15] . Combining high doses of γ radiation and heat-treatments, it was possible to increase the TL sensitivity of a 280 °C peak more than 1000 times.…”

Section: Introductionmentioning

confidence: 99%

Effect of particle size in the TL response of natural quartz sensitized by high dose of gamma radiation and heat-treatments

et al. 2010

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This work investigates the effect of particle size in the thermoluminescence (TL) response of a quartz crystal that was initially crushed and classified into ten size fractions between 38 μm and 5 mm. Aliquots of each size fraction were sensitized with a dose of 25 kGy of γ rays and heat-treatments at 400 °C. TL glow curves of sensitized and non-sensitized samples were recorded as a function of different test-doses of γ rays. For the non-sensitized samples, the TL peak near 325 °C increases with the decrease in particle size. In the case of sensitized samples, a strong TL peak near 300 °C increases with the increase in particle size up to mean grain size equal to 304 μm. Above 304 μm, an abrupt reduction in the TL intensity is noticed for the sensitized peak. These effects are discussed in relation to the specific surface area of quartz particles and the intensity of the electron paramagnetic resonance signal of the E'1 center induced by the sensitization process

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Effect of high gamma doses on the sensitization of natural quartz used for thermoluminescence dosimetry

Cited by 20 publications

References 1 publication

Behavior of various Nigerian quartz samples to repeated irradiation and heating

Behavior of various Nigerian quartz samples to repeated irradiation and heating

Pre-gamma dose thermoluminescence characteristics of muscovite mica

Effect of particle size in the TL response of natural quartz sensitized by high dose of gamma radiation and heat-treatments

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