Pre-gamma dose thermoluminescence characteristics of muscovite mica

Kaur, Navjeet; Singh, Lakhwant; Singh, Mohan; Lochab, S.P.

doi:10.1016/j.nimb.2012.08.017

Cited by 8 publications

(5 citation statements)

References 39 publications

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“…The obtained results showed that rhyolite could be sensitized at an activation temperature of 550°C at which the highest TL response was obtained. These results are similar to those obtained for both natural white mica [ 2 ] and muscovite mica [ 20 ] with a comparable chemical composition. Higher activation temperature (900°C) was observed for natural Egyptian Pegmatite, [ 12 ] which has higher silicon and lower potassium contents compared with Mica and rhyolite.…”

Section: Resultssupporting

confidence: 89%

Sensitization of natural rhyolite rock using high gamma doses for thermoluminescence dosimetry

Aloraini

2020

Luminescence

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The current study presents rhyolite as a novel and promising natural thermoluminescence emission (TL) material. The work focused on enhancing the TL sensitivity of rhyolite via optimization of the processing conditions: annealing and pre-dose effect. The glow curves of irradiated rhyolite sample showed a single peak of about 110 C at 5 C sec-1 heating rate. Sensitization was performed following Fleming's sensitization technique. It was found that applying 1 kGy pre-dose irradiation, followed by thermal activation at 550 C for 1 h, and cooling in air at room temperature were the optimum conditions for TL sensitivity improvement of this 110 C glow peak. Both nonsensitized and sensitized rhyolite have linear behaviour in the range 5-1500 Gy. The obtained results present rhyolite as a material for potential dosimetry applications.

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Section: Resultssupporting

confidence: 89%

Sensitization of natural rhyolite rock using high gamma doses for thermoluminescence dosimetry

Aloraini

2020

Luminescence

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“…The TL dose-response of the sensitized phyllite is linear, which is in agreement with previously published reports [21][22][23]. The pre-dose technique was quite suitable for heated samples such as phyllite; the same result was found and reported previously forquartz.…”

Section: Pre-dose Sensitizationsupporting

confidence: 91%

“…Other natural materials were studied, including quartz [7], mica [21][22][23], blue calcite [24], and calcitic limestone [13]. For example, Kaur et al [23] studied the sensitization characteristics of the 180 • C thermoluminescence peak of muscovite mica. They investigated the relationship between the sensitization factor and the pre-dose and duration of heat treatment.…”

Section: Introductionmentioning

confidence: 99%

Thermoluminescence Sensitization of Phyllite Natural Rock

et al. 2022

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A sensitization procedure is used to enhance the thermoluminescence (TL) sensitivity of phyllite to emit radiation. Phyllite is a type of foliated metamorphic rock made from slate. This study examines naturally grown phyllite rock, which had not been previously studied. Using a Thermo 3500 manual reader, the TL sensitivity of phyllite as a function of dosage was measured. The doses required to perform this study were administered using a 60Co source. The statistical regression test of the data had a significance level of p < 0.05. The study also included thermal and pre-dose effects. Using the sensitization procedure, the nonlinearity in TL dose–response was removed, and the sensitivity was increased 44 times that of its original value. The fading study showed a dependence on the test dose. According to the obtained results, the combination of linear dose–response and high sensitivity to gamma radiation makes phyllite an important rock for dating and retrospective dosimetry.

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“…It is observed the glow curve is deconvoluted into four peaks at 442, 525, 595 and 663 K and La 2 O 3 :Eu 3+ phosphor (Fig. 7) is deconvoluted into two peaks at 583 K and 640 K. The theoretically fitted TL glow curves are well fitted with the experimental data and the quality of fitting is described by figure of merit (FOM) [17]. The FOM for the present curve fitting is 1.82 and 2.2% for undoped and Eu 3+ doped La 2 O 3 , respectively.…”

Section: Kinetic Parametersmentioning

confidence: 75%

Luminescence properties of La2O3:Eu3+ nanophosphor prepared by sol–gel method

Pushpa

Kokila

Shivaramu³

2016

Nuclear Instruments and Methods in Physics Research Section B:

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a b s t r a c tUndoped and Eu 3+ doped La 2 O 3 nanophosphor are synthesized by low temperature sol-gel technique. The synthesized samples are characterized by X-ray diffraction (XRD) and average crystallite size is found to be $18 nm and $23 nm for undoped and Eu 3+ doped La 2 O 3 respectively. Gamma ray irradiated undoped La 2 O 3 shows high intense thermoluminescence (TL) glow peak at 640 K and weak TL glow peak at 443 K and the high intense peak intensity is sub linear increase with c-dose. Whereas Eu 3+ doped La 2 O 3 nanophosphor show a prominent TL glow peak at 640 K and its TL intensity linearly increases up to 1 kGy.The kinetic parameters are estimated using glow curve deconvoluted (GCD) technique. TL emission of cray irradiated Eu 3+ doped La 2 O 3 show peaks at 508, 586, 619 and 706 nm are attributed to Eu 3+ transition peaks.

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Pre-gamma dose thermoluminescence characteristics of muscovite mica

Cited by 8 publications

References 39 publications

Sensitization of natural rhyolite rock using high gamma doses for thermoluminescence dosimetry

Sensitization of natural rhyolite rock using high gamma doses for thermoluminescence dosimetry

Thermoluminescence Sensitization of Phyllite Natural Rock

Luminescence properties of La2O3:Eu3+ nanophosphor prepared by sol–gel method

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