Luminescence properties of natural dead sea salt pellet dosimetry upon thermal stimulation

Azim, M.K. Muhamad; Sani, S.F. Abdul; Daar, Eman; Khandaker, Mayeen Uddin; Almugren, K.S.; Alkallas, Fatemah H.; Bradley, D.A.

doi:10.1016/j.radphyschem.2020.108964

Cited by 9 publications

(6 citation statements)

References 20 publications

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“…The glow curve's dominant peaks indicate that irradiation caused the formation of multiple luminescent centres. These glow curves are similar to those described by other researchers such as Muhamad Azim et al, Polymeris et al, Datz et al, and Spooner et al [ 18,22,43,44 ] However, the small variations between peak heights amongst the observed and reported cases could be attributed to the diverse sites, origin of the analysed samples, impacting the nature and concentration of impurities. It must be noted that these impurities have a significant impact on the TL characteristics.…”

Section: Resultssupporting

confidence: 89%

“…The peak P3 lies within the general dosimetric peak temperature range (180-250 C). [42] Another high temperature peak (P4) appears between [18,22,43,44] However, the small variations between peak heights amongst the observed and reported cases could be attributed to the diverse sites, origin of the analysed samples, impacting the nature and concentration of impurities. It must be noted that these impurities have a significant impact on the TL characteristics.…”

Section: Thermoluminescence Glow Curve Structurementioning

confidence: 92%

“…[11][12][13][14][15] Compressing NaCl salt into pellets makes it easier to handle, enhances reproducibility, produce higher weight-normalized signals as compared to grains of salt and supports the potential use of NaCl for prospective dosimetry. [7,13,[16][17][18] The presence of impurities in materials either improves or degrades the TL property. Impurity concentrations in materials (such as natural salt) vary by region, as does the TL response.…”

Section: Introductionmentioning

confidence: 99%

“…[ 11–15 ] Compressing NaCl salt into pellets makes it easier to handle, enhances reproducibility, produce higher weight‐normalized signals as compared to grains of salt and supports the potential use of NaCl for prospective dosimetry. [ 7,13,16–18 ]…”

Section: Introductionmentioning

confidence: 99%

“…[ 25 ] Muhamad Azim et al and Wahib et al investigated natural Dead Sea salt pelletized samples for prospective and retrospective dosimetry, respectively. [ 18,26 ] Bernhardsson et al compared the OSL characteristics of two Swedish household salts to the OSL properties of 100 other salts from across the world. They concluded that, in comparison to several other fortuitous materials near to man, common salt has superior OSL dosimetric characteristics.…”

Section: Introductionmentioning

confidence: 99%

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Dosimetric properties of thermoluminescent NaCl pellets from Khewra Salt Mines, Pakistan

et al. 2022

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Thermoluminescence (TL) and extended dosimetric characteristics of naturally occurring sodium chloride (NaCl) salt were studied. Pellets were prepared from mined crystalline salt obtained from Khewra Salt Mines, Pakistan and irradiated from 1 mGy to 10,000 mGy using cobalt-60 gamma source. The TL response showed two dominant peaks around 125 C and 230 C, respectively, at low doses, with an additional peak in between at doses beyond 300 mGy. A linear and supra-linear TL response was observed between 1 mGy-100 mGy and 100 mGy-10 Gy dose ranges, respectively.During the first 24 h post-irradiation, the TL intensity dropped by 20%. A maximum angular dependence of up to 50% was observed between 0 to 360 . For photon

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Section: Resultssupporting

confidence: 89%

Section: Thermoluminescence Glow Curve Structurementioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Dosimetric properties of thermoluminescent NaCl pellets from Khewra Salt Mines, Pakistan

et al. 2022

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Natural dead sea salt and retrospective dosimetry

Wahib

Sani

Ramli

et al. 2020

Radiat Environ Biophys

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Accidents resulting in widespread dispersal of radioactive materials have given rise to a need for materials that are convenient in allowing individual dose assessment. The present study examines natural Dead Sea salt adopted as a model thermoluminescence dosimetry system. Samples were prepared in two different forms, loose-raw and loose-ground, subsequently exposed to 60 Co gamma-rays, delivering doses in the range 2-10 Gy. Key thermoluminescence (TL) properties were examined, including glow curves, dose response, sensitivity, reproducibility and fading. Glow curves shapes were found to be independent of given dose, prominent TL peaks for the raw and ground samples appearing in the temperature ranges 361-385 ºC and 366-401 ºC, respectively. The deconvolution of glow curves has been undertaken using GlowFit, resulting in ten overlapping first-order kinetic glow peaks. For both sample forms, the integrated TL yield displays linearity of response with dose, the loose-raw salt showing some 2.5 × the sensitivity of the ground salt. The samples showed similar degrees of fading, with respective residual signals 28 days post-irradiation of 66% and 62% for the ground and raw forms respectively; conversely, confronted by light-induced fading the respective signal losses were 62% and 80%. The effective atomic number of the Dead Sea salt of 16.3 is comparable to that of TLD-200 (Z eff 16.3), suitable as an environmental radiation monitor in accident situations but requiring careful calibration in the reconstruction of soft tissue dose (soft tissue Z eff 7.2). Sample luminescence studies were carried out via Raman and Photoluminescence spectroscopy as well as X-ray diffraction, ionizing radiation dependent variation in lattice structure being found to influence TL response.

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Thermoluminescence study of pellets prepared using NaCl from Khewra Salt Mines in Pakistan

Ahmad

Kakakhel

Hayat

et al. 2021

Radiat Environ Biophys

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Luminescence properties of natural dead sea salt pellet dosimetry upon thermal stimulation

Cited by 9 publications

References 20 publications

Dosimetric properties of thermoluminescent NaCl pellets from Khewra Salt Mines, Pakistan

Dosimetric properties of thermoluminescent NaCl pellets from Khewra Salt Mines, Pakistan

Natural dead sea salt and retrospective dosimetry

Thermoluminescence study of pellets prepared using NaCl from Khewra Salt Mines in Pakistan

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