Thermoluminescence in pre-heat treated NaCl crystals doped with yttrium

Reddy, Ch. Gopal; Reddy, S. Narender; Reddy, K. Narasimha

doi:10.1016/j.matlet.2003.09.004

Cited by 2 publications

(1 citation statement)

References 8 publications

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“…For the purpose of gaining an understanding of the TL characteristics that occur after being exposed to rays, Heywood and Clarke utilized both pure sodium chloride and NaCl:Ca. Recent years have seen a significant increase in the number of research conducted in this area [20][21][22][23][24]. The purpose of this paper is to explore the glow-curve, thermal fading, and influence of grain size on the TLintensity of HS in order to determine whether or not it might be used as an unintentional dosimeter.…”

Section: Introductionmentioning

confidence: 99%

Thermoluminescence studies of Himalayan salt Materials

Hussain,

Badran,

Abul-hial

et al. 2024

J. Basrah Res. (Sci.)

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The goal of this work was to evaluate the thermoluminescence features of Himalayan salt (HS) for the purpose of radiation dosimetry. As a result of its low cost, widespread availability in the market, and similarity to the tissues found in the human body. Irradiation of the samples was performed with a radiation source that utilised 137Cs. With a heating rate of 15 degrees Celsius per second and a final temperature of 320 degrees Celsius, the samples were subjected to TL analysis with the help of the Harshaw Model 2000B/C TLD Reader. In commercial salt samples, the glow curve (gwc) reveals the presence of a strong glow peak at temperatures ranging from 204 to 282 degrees Celsius. For the salt sample, the grain size (gz) is exactly proportional to the total light intensity (TL) of the glow curve shown in the graph. Not only that, but the findings also demonstrate that the TL intensity of the HS has a linear relationship with dosage throughout a wide range, spanning from 250 mGy to 20 Gy. The post- irradiated fading rate are investigated and shows the rate of thermal fading of HS, found to be equal 32% at storage time for 24 days. These results indicate that this material is very interesting for useful for TL-dosimetric applications.

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Section: Introductionmentioning

confidence: 99%

Thermoluminescence studies of Himalayan salt Materials

Hussain,

Badran,

Abul-hial

et al. 2024

J. Basrah Res. (Sci.)

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Thermoluminescence response of previously heated NaCl : Eu crystals to UV radiation

Mondragón‐Galicia¹,

Mendoza-Anaya²,

Nicho-Díaz³

et al. 2008

J. Phys. D: Appl. Phys.

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In this work we report the modification in the thermoluminescent (TL) response to ultraviolet (UV) radiation of Czochralski-grown NaCl : Eu crystals when they are pre-heated. The crystals were pre-heated at 273, 473, 573, 673, 773 and 873 K for 2 h in an inert atmosphere, observing the highest response in crystals pre-heated at 573 K and the lowest in crystals pre-heated at 473 K. To correlate the TL response with the thermal treatment and, in a certain way, with the microstructure developed in the crystals, they were observed with a low vacuum scanning electron microscope. At 373 K the crystals showed spherical precipitates of 100 nm size homogeneously distributed, whereas at 473 and 573 K, the crystals showed, besides spherical precipitates, wire-like precipitates from 1.0 to 7.0 µm in length. The precipitates changed to a square 4 µm in size at 673 K which diminished to 1.0 µm in size in crystals heated at 773 and 873 K. Clearly the shape of the precipitates has an influence on the TL response of the NaCl : Eu crystals.

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Thermoluminescence in pre-heat treated NaCl crystals doped with yttrium

Cited by 2 publications

References 8 publications

Thermoluminescence studies of Himalayan salt Materials

Thermoluminescence studies of Himalayan salt Materials

Thermoluminescence response of previously heated NaCl : Eu crystals to UV radiation

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